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         , _old_snap_type (e->snap_type())
3121         , _old_snap_mode (e->snap_mode())
3122         , before_state (0)
3123 {
3124         DEBUG_TRACE (DEBUG::Drags, "New MeterMarkerDrag\n");
3125         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
3126         assert (_marker);
3127         _real_section = &_marker->meter();
3128
3129 }
3130
3131 void
3132 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3133 {
3134         Drag::start_grab (event, cursor);
3135         show_verbose_cursor_time (adjusted_current_frame(event));
3136 }
3137
3138 void
3139 MeterMarkerDrag::setup_pointer_frame_offset ()
3140 {
3141         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3142 }
3143
3144 void
3145 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3146 {
3147         if (first_move) {
3148                 // create a dummy marker to catch events, then hide it.
3149
3150                 char name[64];
3151                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3152
3153                 _marker = new MeterMarker (
3154                         *_editor,
3155                         *_editor->meter_group,
3156                         UIConfiguration::instance().color ("meter marker"),
3157                         name,
3158                         *new MeterSection (_marker->meter())
3159                 );
3160
3161                 /* use the new marker for the grab */
3162                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3163                 _marker->hide();
3164
3165                 TempoMap& map (_editor->session()->tempo_map());
3166                 /* get current state */
3167                 before_state = &map.get_state();
3168
3169                 if (!_copy) {
3170                         _editor->begin_reversible_command (_("move meter mark"));
3171                 } else {
3172                         _editor->begin_reversible_command (_("copy meter mark"));
3173
3174                         Timecode::BBT_Time bbt = _real_section->bbt();
3175
3176                         /* we can't add a meter where one currently exists */
3177                         if (_real_section->frame() < adjusted_current_frame (event, false)) {
3178                                 ++bbt.bars;
3179                         } else {
3180                                 --bbt.bars;
3181                         }
3182                         const double beat = map.beat_at_bbt (bbt);
3183                         _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor())
3184                                                        , beat, bbt, map.frame_at_bbt (bbt), _real_section->position_lock_style());
3185
3186                 }
3187                 /* only snap to bars. leave snap mode alone for audio locked meters.*/
3188                 if (_real_section->position_lock_style() != AudioTime) {
3189                         _editor->set_snap_to (SnapToBar);
3190                         _editor->set_snap_mode (SnapNormal);
3191                 }
3192         }
3193
3194         framepos_t pf = adjusted_current_frame (event);
3195
3196         if (_real_section->position_lock_style() == AudioTime && _editor->snap_musical()) {
3197                 /* never snap to music for audio locked */
3198                 pf = adjusted_current_frame (event, false);
3199         }
3200
3201         _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3202
3203         /* fake marker meeds to stay under the mouse, unlike the real one. */
3204         _marker->set_position (adjusted_current_frame (event, false));
3205
3206         show_verbose_cursor_time (_real_section->frame());
3207 }
3208
3209 void
3210 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3211 {
3212         if (!movement_occurred) {
3213                 if (was_double_click()) {
3214                         _editor->edit_meter_marker (*_marker);
3215                 }
3216                 return;
3217         }
3218
3219         /* reinstate old snap setting */
3220         _editor->set_snap_to (_old_snap_type);
3221         _editor->set_snap_mode (_old_snap_mode);
3222
3223         TempoMap& map (_editor->session()->tempo_map());
3224
3225         XMLNode &after = map.get_state();
3226         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3227         _editor->commit_reversible_command ();
3228
3229         // delete the dummy marker we used for visual representation while moving.
3230         // a new visual marker will show up automatically.
3231         delete _marker;
3232 }
3233
3234 void
3235 MeterMarkerDrag::aborted (bool moved)
3236 {
3237         _marker->set_position (_marker->meter().frame ());
3238         if (moved) {
3239                 /* reinstate old snap setting */
3240                 _editor->set_snap_to (_old_snap_type);
3241                 _editor->set_snap_mode (_old_snap_mode);
3242
3243                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3244                 // delete the dummy marker we used for visual representation while moving.
3245                 // a new visual marker will show up automatically.
3246                 delete _marker;
3247         }
3248 }
3249
3250 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3251         : Drag (e, i)
3252         , _copy (c)
3253         , before_state (0)
3254 {
3255         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3256
3257         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3258         _real_section = &_marker->tempo();
3259         _movable = _real_section->movable();
3260         assert (_marker);
3261 }
3262
3263 void
3264 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3265 {
3266         Drag::start_grab (event, cursor);
3267         if (!_real_section->active()) {
3268                 show_verbose_cursor_text (_("inactive"));
3269         } else {
3270                 show_verbose_cursor_time (adjusted_current_frame (event));
3271         }
3272 }
3273
3274 void
3275 TempoMarkerDrag::setup_pointer_frame_offset ()
3276 {
3277         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3278 }
3279
3280 void
3281 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3282 {
3283         if (!_real_section->active()) {
3284                 return;
3285         }
3286
3287         if (first_move) {
3288
3289                 // mvc drag - create a dummy marker to catch events, hide it.
3290
3291                 char name[64];
3292                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3293
3294                 TempoSection section (_marker->tempo());
3295
3296                 _marker = new TempoMarker (
3297                         *_editor,
3298                         *_editor->tempo_group,
3299                         UIConfiguration::instance().color ("tempo marker"),
3300                         name,
3301                         *new TempoSection (_marker->tempo())
3302                         );
3303
3304                 /* use the new marker for the grab */
3305                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3306                 _marker->hide();
3307
3308                 TempoMap& map (_editor->session()->tempo_map());
3309                 /* get current state */
3310                 before_state = &map.get_state();
3311
3312                 if (!_copy) {
3313                         _editor->begin_reversible_command (_("move tempo mark"));
3314
3315                 } else {
3316                         const framepos_t frame = adjusted_current_frame (event) + 1;
3317
3318                         _editor->begin_reversible_command (_("copy tempo mark"));
3319
3320                         if (_real_section->position_lock_style() == MusicTime) {
3321                                 _real_section = map.add_tempo (_marker->tempo(), map.pulse_at_frame (frame), 0, _real_section->type(), MusicTime);
3322                         } else {
3323                                 _real_section = map.add_tempo (_marker->tempo(), 0.0, frame, _real_section->type(), AudioTime);
3324                         }
3325                 }
3326
3327         }
3328
3329         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3330                 /* use vertical movement to alter tempo .. should be log */
3331                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3332                 stringstream strs;
3333
3334                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3335                 strs << new_bpm;
3336                 show_verbose_cursor_text (strs.str());
3337
3338         } else if (_movable && !_real_section->locked_to_meter()) {
3339                 TempoMap& map (_editor->session()->tempo_map());
3340                 const bool was_music = _real_section->position_lock_style() == MusicTime;
3341
3342                 const framepos_t pf = adjusted_current_frame (event);
3343
3344                 if (!_editor->snap_musical()) {
3345
3346                         if (was_music) {
3347                                 _real_section->set_position_lock_style (AudioTime);
3348                         }
3349
3350                         map.gui_move_tempo (_real_section, pf);
3351
3352                         if (was_music) {
3353                                 _real_section->set_position_lock_style (MusicTime);
3354                         }
3355
3356                 } else {
3357
3358                         if (!was_music) {
3359                                 _real_section->set_position_lock_style (MusicTime);
3360                         }
3361
3362                         map.gui_move_tempo (_real_section, pf);
3363
3364                         if (!was_music) {
3365                                 _real_section->set_position_lock_style (AudioTime);
3366                         }
3367                 }
3368
3369                 show_verbose_cursor_time (_real_section->frame());
3370         }
3371
3372         /* this has moved the bar lines themselves, so recalibrate the offset */
3373         setup_pointer_frame_offset();
3374
3375         _marker->set_position (adjusted_current_frame (event, false));
3376 }
3377
3378 void
3379 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3380 {
3381         if (!_real_section->active()) {
3382                 return;
3383         }
3384         if (!movement_occurred) {
3385                 if (was_double_click()) {
3386                         _editor->edit_tempo_marker (*_marker);
3387                 }
3388                 return;
3389         }
3390
3391         TempoMap& map (_editor->session()->tempo_map());
3392
3393         XMLNode &after = map.get_state();
3394         _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3395         _editor->commit_reversible_command ();
3396
3397         // delete the dummy marker we used for visual representation while moving.
3398         // a new visual marker will show up automatically.
3399         delete _marker;
3400 }
3401
3402 void
3403 TempoMarkerDrag::aborted (bool moved)
3404 {
3405         _marker->set_position (_marker->tempo().frame());
3406         if (moved) {
3407                 TempoMap& map (_editor->session()->tempo_map());
3408                 map.set_state (*before_state, Stateful::current_state_version);
3409                 // delete the dummy marker we used for visual representation while moving.
3410                 // a new visual marker will show up automatically.
3411                 delete _marker;
3412         }
3413 }
3414
3415 BBTRulerDrag::BBTRulerDrag (Editor* e, ArdourCanvas::Item* i)
3416         : Drag (e, i)
3417         , _pulse (0.0)
3418         , _beat (0.0)
3419         , _tempo (0)
3420         , before_state (0)
3421 {
3422         DEBUG_TRACE (DEBUG::Drags, "New BBTRulerDrag\n");
3423
3424 }
3425
3426 void
3427 BBTRulerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3428 {
3429         Drag::start_grab (event, cursor);
3430
3431         TempoMap& map (_editor->session()->tempo_map());
3432         ostringstream sstr;
3433
3434         _tempo = const_cast<TempoSection*> (&map.tempo_section_at_frame (raw_grab_frame()));
3435         sstr << "^" << fixed << setprecision(3) << map.tempo_at_frame (adjusted_current_frame (event)).beats_per_minute() << "\n";
3436         sstr << "<" << fixed << setprecision(3) << _tempo->beats_per_minute();
3437         show_verbose_cursor_text (sstr.str());
3438         finished (event, false);
3439 }
3440
3441 void
3442 BBTRulerDrag::setup_pointer_frame_offset ()
3443 {
3444         TempoMap& map (_editor->session()->tempo_map());
3445         const double beat_at_frame = map.beat_at_frame (raw_grab_frame());
3446         const uint32_t divisions = _editor->get_grid_beat_divisions (0);
3447         if (divisions > 0) {
3448                 _beat = floor (beat_at_frame) + (floor (((beat_at_frame - floor (beat_at_frame)) * divisions)) / divisions);
3449         } else {
3450                 /* while it makes some sense for the user to determine the division to 'grab',
3451                    grabbing a bar often leads to confusing results wrt the actual tempo section being altered
3452                    and the result over steep tempo curves. Use sixteenths.
3453                 */
3454                 _beat = floor (beat_at_frame) + (floor (((beat_at_frame - floor (beat_at_frame)) * 4)) / 4);
3455         }
3456         _pulse = map.pulse_at_beat (_beat);
3457         _pointer_frame_offset = raw_grab_frame() - map.frame_at_beat (_beat);
3458 }
3459
3460 void
3461 BBTRulerDrag::motion (GdkEvent* event, bool first_move)
3462 {
3463         TempoMap& map (_editor->session()->tempo_map());
3464
3465         if (first_move) {
3466                 /* get current state */
3467                 before_state = &map.get_state();
3468                 _editor->begin_reversible_command (_("dilate tempo"));
3469         }
3470
3471         framepos_t const pf = adjusted_current_frame (event, false);
3472
3473         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::constraint_modifier())) {
3474                 /* adjust previous tempo to match pointer frame */
3475                 _editor->session()->tempo_map().gui_dilate_tempo (_tempo, map.frame_at_pulse (_pulse), pf, _pulse);
3476         }
3477         ostringstream sstr;
3478         sstr << "^" << fixed << setprecision(3) << map.tempo_at_frame (pf).beats_per_minute() << "\n";
3479         sstr << "<" << fixed << setprecision(3) << _tempo->beats_per_minute();
3480         show_verbose_cursor_text (sstr.str());
3481 }
3482
3483 void
3484 BBTRulerDrag::finished (GdkEvent* event, bool movement_occurred)
3485 {
3486         if (!movement_occurred) {
3487                 return;
3488         }
3489
3490         TempoMap& map (_editor->session()->tempo_map());
3491
3492         XMLNode &after = map.get_state();
3493         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3494         _editor->commit_reversible_command ();
3495 }
3496
3497 void
3498 BBTRulerDrag::aborted (bool moved)
3499 {
3500         if (moved) {
3501                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3502         }
3503 }
3504
3505
3506 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3507         : Drag (e, &c.track_canvas_item(), false)
3508         , _cursor (c)
3509         , _stop (s)
3510         , _grab_zoom (0.0)
3511 {
3512         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3513 }
3514
3515 /** Do all the things we do when dragging the playhead to make it look as though
3516  *  we have located, without actually doing the locate (because that would cause
3517  *  the diskstream buffers to be refilled, which is too slow).
3518  */
3519 void
3520 CursorDrag::fake_locate (framepos_t t)
3521 {
3522         if (_editor->session () == 0) {
3523                 return;
3524         }
3525
3526         _editor->playhead_cursor->set_position (t);
3527
3528         Session* s = _editor->session ();
3529         if (s->timecode_transmission_suspended ()) {
3530                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3531                 /* This is asynchronous so it will be sent "now"
3532                  */
3533                 s->send_mmc_locate (f);
3534                 /* These are synchronous and will be sent during the next
3535                    process cycle
3536                 */
3537                 s->queue_full_time_code ();
3538                 s->queue_song_position_pointer ();
3539         }
3540
3541         show_verbose_cursor_time (t);
3542         _editor->UpdateAllTransportClocks (t);
3543 }
3544
3545 void
3546 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3547 {
3548         Drag::start_grab (event, c);
3549         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3550
3551         _grab_zoom = _editor->samples_per_pixel;
3552
3553         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3554
3555         _editor->snap_to_with_modifier (where, event);
3556
3557         _editor->_dragging_playhead = true;
3558
3559         Session* s = _editor->session ();
3560
3561         /* grab the track canvas item as well */
3562
3563         _cursor.track_canvas_item().grab();
3564
3565         if (s) {
3566                 if (_was_rolling && _stop) {
3567                         s->request_stop ();
3568                 }
3569
3570                 if (s->is_auditioning()) {
3571                         s->cancel_audition ();
3572                 }
3573
3574
3575                 if (AudioEngine::instance()->connected()) {
3576
3577                         /* do this only if we're the engine is connected
3578                          * because otherwise this request will never be
3579                          * serviced and we'll busy wait forever. likewise,
3580                          * notice if we are disconnected while waiting for the
3581                          * request to be serviced.
3582                          */
3583
3584                         s->request_suspend_timecode_transmission ();
3585                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3586                                 /* twiddle our thumbs */
3587                         }
3588                 }
3589         }
3590
3591         fake_locate (where - snap_delta (event->button.state));
3592 }
3593
3594 void
3595 CursorDrag::motion (GdkEvent* event, bool)
3596 {
3597         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3598         _editor->snap_to_with_modifier (where, event);
3599         if (where != last_pointer_frame()) {
3600                 fake_locate (where - snap_delta (event->button.state));
3601         }
3602 }
3603
3604 void
3605 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3606 {
3607         _editor->_dragging_playhead = false;
3608
3609         _cursor.track_canvas_item().ungrab();
3610
3611         if (!movement_occurred && _stop) {
3612                 return;
3613         }
3614
3615         motion (event, false);
3616
3617         Session* s = _editor->session ();
3618         if (s) {
3619                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3620                 _editor->_pending_locate_request = true;
3621                 s->request_resume_timecode_transmission ();
3622         }
3623 }
3624
3625 void
3626 CursorDrag::aborted (bool)
3627 {
3628         _cursor.track_canvas_item().ungrab();
3629
3630         if (_editor->_dragging_playhead) {
3631                 _editor->session()->request_resume_timecode_transmission ();
3632                 _editor->_dragging_playhead = false;
3633         }
3634
3635         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3636 }
3637
3638 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3639         : RegionDrag (e, i, p, v)
3640 {
3641         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3642 }
3643
3644 void
3645 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3646 {
3647         Drag::start_grab (event, cursor);
3648
3649         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3650         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3651         setup_snap_delta (r->position ());
3652
3653         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3654 }
3655
3656 void
3657 FadeInDrag::setup_pointer_frame_offset ()
3658 {
3659         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3660         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3661         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3662 }
3663
3664 void
3665 FadeInDrag::motion (GdkEvent* event, bool)
3666 {
3667         framecnt_t fade_length;
3668
3669         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3670         _editor->snap_to_with_modifier (pos, event);
3671         pos -= snap_delta (event->button.state);
3672
3673         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3674
3675         if (pos < (region->position() + 64)) {
3676                 fade_length = 64; // this should be a minimum defined somewhere
3677         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3678                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3679         } else {
3680                 fade_length = pos - region->position();
3681         }
3682
3683         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3684
3685                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3686
3687                 if (!tmp) {
3688                         continue;
3689                 }
3690
3691                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3692         }
3693
3694         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3695 }
3696
3697 void
3698 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3699 {
3700         if (!movement_occurred) {
3701                 return;
3702         }
3703
3704         framecnt_t fade_length;
3705         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3706         _editor->snap_to_with_modifier (pos, event);
3707         pos -= snap_delta (event->button.state);
3708
3709         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3710
3711         if (pos < (region->position() + 64)) {
3712                 fade_length = 64; // this should be a minimum defined somewhere
3713         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3714                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3715         } else {
3716                 fade_length = pos - region->position();
3717         }
3718
3719         bool in_command = false;
3720
3721         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3722
3723                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3724
3725                 if (!tmp) {
3726                         continue;
3727                 }
3728
3729                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3730                 XMLNode &before = alist->get_state();
3731
3732                 tmp->audio_region()->set_fade_in_length (fade_length);
3733                 tmp->audio_region()->set_fade_in_active (true);
3734
3735                 if (!in_command) {
3736                         _editor->begin_reversible_command (_("change fade in length"));
3737                         in_command = true;
3738                 }
3739                 XMLNode &after = alist->get_state();
3740                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3741         }
3742
3743         if (in_command) {
3744                 _editor->commit_reversible_command ();
3745         }
3746 }
3747
3748 void
3749 FadeInDrag::aborted (bool)
3750 {
3751         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3752                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3753
3754                 if (!tmp) {
3755                         continue;
3756                 }
3757
3758                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3759         }
3760 }
3761
3762 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3763         : RegionDrag (e, i, p, v)
3764 {
3765         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3766 }
3767
3768 void
3769 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3770 {
3771         Drag::start_grab (event, cursor);
3772
3773         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3774         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3775         setup_snap_delta (r->last_frame ());
3776
3777         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3778 }
3779
3780 void
3781 FadeOutDrag::setup_pointer_frame_offset ()
3782 {
3783         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3784         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3785         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3786 }
3787
3788 void
3789 FadeOutDrag::motion (GdkEvent* event, bool)
3790 {
3791         framecnt_t fade_length;
3792
3793         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3794         _editor->snap_to_with_modifier (pos, event);
3795         pos -= snap_delta (event->button.state);
3796
3797         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3798
3799         if (pos > (region->last_frame() - 64)) {
3800                 fade_length = 64; // this should really be a minimum fade defined somewhere
3801         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3802                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3803         } else {
3804                 fade_length = region->last_frame() - pos;
3805         }
3806
3807         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3808
3809                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3810
3811                 if (!tmp) {
3812                         continue;
3813                 }
3814
3815                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3816         }
3817
3818         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3819 }
3820
3821 void
3822 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3823 {
3824         if (!movement_occurred) {
3825                 return;
3826         }
3827
3828         framecnt_t fade_length;
3829
3830         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3831         _editor->snap_to_with_modifier (pos, event);
3832         pos -= snap_delta (event->button.state);
3833
3834         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3835
3836         if (pos > (region->last_frame() - 64)) {
3837                 fade_length = 64; // this should really be a minimum fade defined somewhere
3838         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3839                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3840         } else {
3841                 fade_length = region->last_frame() - pos;
3842         }
3843
3844         bool in_command = false;
3845
3846         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3847
3848                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3849
3850                 if (!tmp) {
3851                         continue;
3852                 }
3853
3854                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3855                 XMLNode &before = alist->get_state();
3856
3857                 tmp->audio_region()->set_fade_out_length (fade_length);
3858                 tmp->audio_region()->set_fade_out_active (true);
3859
3860                 if (!in_command) {
3861                         _editor->begin_reversible_command (_("change fade out length"));
3862                         in_command = true;
3863                 }
3864                 XMLNode &after = alist->get_state();
3865                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3866         }
3867
3868         if (in_command) {
3869                 _editor->commit_reversible_command ();
3870         }
3871 }
3872
3873 void
3874 FadeOutDrag::aborted (bool)
3875 {
3876         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3877                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3878
3879                 if (!tmp) {
3880                         continue;
3881                 }
3882
3883                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3884         }
3885 }
3886
3887 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3888         : Drag (e, i)
3889         , _selection_changed (false)
3890 {
3891         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3892         Gtk::Window* toplevel = _editor->current_toplevel();
3893         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3894
3895         assert (_marker);
3896
3897         _points.push_back (ArdourCanvas::Duple (0, 0));
3898
3899         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3900 }
3901
3902 MarkerDrag::~MarkerDrag ()
3903 {
3904         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3905                 delete i->location;
3906         }
3907 }
3908
3909 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3910 {
3911         location = new Location (*l);
3912         markers.push_back (m);
3913         move_both = false;
3914 }
3915
3916 void
3917 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3918 {
3919         Drag::start_grab (event, cursor);
3920
3921         bool is_start;
3922
3923         Location *location = _editor->find_location_from_marker (_marker, is_start);
3924         _editor->_dragging_edit_point = true;
3925
3926         update_item (location);
3927
3928         // _drag_line->show();
3929         // _line->raise_to_top();
3930
3931         if (is_start) {
3932                 show_verbose_cursor_time (location->start());
3933         } else {
3934                 show_verbose_cursor_time (location->end());
3935         }
3936         setup_snap_delta (is_start ? location->start() : location->end());
3937
3938         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3939
3940         switch (op) {
3941         case Selection::Toggle:
3942                 /* we toggle on the button release */
3943                 break;
3944         case Selection::Set:
3945                 if (!_editor->selection->selected (_marker)) {
3946                         _editor->selection->set (_marker);
3947                         _selection_changed = true;
3948                 }
3949                 break;
3950         case Selection::Extend:
3951         {
3952                 Locations::LocationList ll;
3953                 list<ArdourMarker*> to_add;
3954                 framepos_t s, e;
3955                 _editor->selection->markers.range (s, e);
3956                 s = min (_marker->position(), s);
3957                 e = max (_marker->position(), e);
3958                 s = min (s, e);
3959                 e = max (s, e);
3960                 if (e < max_framepos) {
3961                         ++e;
3962                 }
3963                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3964                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3965                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3966                         if (lm) {
3967                                 if (lm->start) {
3968                                         to_add.push_back (lm->start);
3969                                 }
3970                                 if (lm->end) {
3971                                         to_add.push_back (lm->end);
3972                                 }
3973                         }
3974                 }
3975                 if (!to_add.empty()) {
3976                         _editor->selection->add (to_add);
3977                         _selection_changed = true;
3978                 }
3979                 break;
3980         }
3981         case Selection::Add:
3982                 _editor->selection->add (_marker);
3983                 _selection_changed = true;
3984
3985                 break;
3986         }
3987
3988         /* Set up copies for us to manipulate during the drag
3989          */
3990
3991         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3992
3993                 Location* l = _editor->find_location_from_marker (*i, is_start);
3994
3995                 if (!l) {
3996                         continue;
3997                 }
3998
3999                 if (l->is_mark()) {
4000                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
4001                 } else {
4002                         /* range: check that the other end of the range isn't
4003                            already there.
4004                         */
4005                         CopiedLocationInfo::iterator x;
4006                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4007                                 if (*(*x).location == *l) {
4008                                         break;
4009                                 }
4010                         }
4011                         if (x == _copied_locations.end()) {
4012                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
4013                         } else {
4014                                 (*x).markers.push_back (*i);
4015                                 (*x).move_both = true;
4016                         }
4017                 }
4018
4019         }
4020 }
4021
4022 void
4023 MarkerDrag::setup_pointer_frame_offset ()
4024 {
4025         bool is_start;
4026         Location *location = _editor->find_location_from_marker (_marker, is_start);
4027         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
4028 }
4029
4030 void
4031 MarkerDrag::motion (GdkEvent* event, bool)
4032 {
4033         framecnt_t f_delta = 0;
4034         bool is_start;
4035         bool move_both = false;
4036         Location *real_location;
4037         Location *copy_location = 0;
4038         framecnt_t const sd = snap_delta (event->button.state);
4039
4040         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
4041         framepos_t next = newframe;
4042
4043         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
4044                 move_both = true;
4045         }
4046
4047         CopiedLocationInfo::iterator x;
4048
4049         /* find the marker we're dragging, and compute the delta */
4050
4051         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4052
4053                 copy_location = (*x).location;
4054
4055                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4056
4057                         /* this marker is represented by this
4058                          * CopiedLocationMarkerInfo
4059                          */
4060
4061                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4062                                 /* que pasa ?? */
4063                                 return;
4064                         }
4065
4066                         if (real_location->is_mark()) {
4067                                 f_delta = newframe - copy_location->start();
4068                         } else {
4069
4070
4071                                 switch (_marker->type()) {
4072                                 case ArdourMarker::SessionStart:
4073                                 case ArdourMarker::RangeStart:
4074                                 case ArdourMarker::LoopStart:
4075                                 case ArdourMarker::PunchIn:
4076                                         f_delta = newframe - copy_location->start();
4077                                         break;
4078
4079                                 case ArdourMarker::SessionEnd:
4080                                 case ArdourMarker::RangeEnd:
4081                                 case ArdourMarker::LoopEnd:
4082                                 case ArdourMarker::PunchOut:
4083                                         f_delta = newframe - copy_location->end();
4084                                         break;
4085                                 default:
4086                                         /* what kind of marker is this ? */
4087                                         return;
4088                                 }
4089                         }
4090
4091                         break;
4092                 }
4093         }
4094
4095         if (x == _copied_locations.end()) {
4096                 /* hmm, impossible - we didn't find the dragged marker */
4097                 return;
4098         }
4099
4100         /* now move them all */
4101
4102         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4103
4104                 copy_location = x->location;
4105
4106                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4107                         continue;
4108                 }
4109
4110                 if (real_location->locked()) {
4111                         continue;
4112                 }
4113
4114                 if (copy_location->is_mark()) {
4115
4116                         /* now move it */
4117
4118                         copy_location->set_start (copy_location->start() + f_delta);
4119
4120                 } else {
4121
4122                         framepos_t new_start = copy_location->start() + f_delta;
4123                         framepos_t new_end = copy_location->end() + f_delta;
4124
4125                         if (is_start) { // start-of-range marker
4126
4127                                 if (move_both || (*x).move_both) {
4128                                         copy_location->set_start (new_start);
4129                                         copy_location->set_end (new_end);
4130                                 } else  if (new_start < copy_location->end()) {
4131                                         copy_location->set_start (new_start);
4132                                 } else if (newframe > 0) {
4133                                         //_editor->snap_to (next, RoundUpAlways, true);
4134                                         copy_location->set_end (next);
4135                                         copy_location->set_start (newframe);
4136                                 }
4137
4138                         } else { // end marker
4139
4140                                 if (move_both || (*x).move_both) {
4141                                         copy_location->set_end (new_end);
4142                                         copy_location->set_start (new_start);
4143                                 } else if (new_end > copy_location->start()) {
4144                                         copy_location->set_end (new_end);
4145                                 } else if (newframe > 0) {
4146                                         //_editor->snap_to (next, RoundDownAlways, true);
4147                                         copy_location->set_start (next);
4148                                         copy_location->set_end (newframe);
4149                                 }
4150                         }
4151                 }
4152
4153                 update_item (copy_location);
4154
4155                 /* now lookup the actual GUI items used to display this
4156                  * location and move them to wherever the copy of the location
4157                  * is now. This means that the logic in ARDOUR::Location is
4158                  * still enforced, even though we are not (yet) modifying
4159                  * the real Location itself.
4160                  */
4161
4162                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4163
4164                 if (lm) {
4165                         lm->set_position (copy_location->start(), copy_location->end());
4166                 }
4167
4168         }
4169
4170         assert (!_copied_locations.empty());
4171
4172         show_verbose_cursor_time (newframe);
4173 }
4174
4175 void
4176 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4177 {
4178         if (!movement_occurred) {
4179
4180                 if (was_double_click()) {
4181                         _editor->rename_marker (_marker);
4182                         return;
4183                 }
4184
4185                 /* just a click, do nothing but finish
4186                    off the selection process
4187                 */
4188
4189                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4190                 switch (op) {
4191                 case Selection::Set:
4192                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4193                                 _editor->selection->set (_marker);
4194                                 _selection_changed = true;
4195                         }
4196                         break;
4197
4198                 case Selection::Toggle:
4199                         /* we toggle on the button release, click only */
4200                         _editor->selection->toggle (_marker);
4201                         _selection_changed = true;
4202
4203                         break;
4204
4205                 case Selection::Extend:
4206                 case Selection::Add:
4207                         break;
4208                 }
4209
4210                 if (_selection_changed) {
4211                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4212                         _editor->commit_reversible_selection_op();
4213                 }
4214
4215                 return;
4216         }
4217
4218         _editor->_dragging_edit_point = false;
4219
4220         XMLNode &before = _editor->session()->locations()->get_state();
4221         bool in_command = false;
4222
4223         MarkerSelection::iterator i;
4224         CopiedLocationInfo::iterator x;
4225         bool is_start;
4226
4227         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4228              x != _copied_locations.end() && i != _editor->selection->markers.end();
4229              ++i, ++x) {
4230
4231                 Location * location = _editor->find_location_from_marker (*i, is_start);
4232
4233                 if (location) {
4234
4235                         if (location->locked()) {
4236                                 continue;
4237                         }
4238                         if (!in_command) {
4239                                 _editor->begin_reversible_command ( _("move marker") );
4240                                 in_command = true;
4241                         }
4242                         if (location->is_mark()) {
4243                                 location->set_start (((*x).location)->start());
4244                         } else {
4245                                 location->set (((*x).location)->start(), ((*x).location)->end());
4246                         }
4247                 }
4248         }
4249
4250         if (in_command) {
4251                 XMLNode &after = _editor->session()->locations()->get_state();
4252                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4253                 _editor->commit_reversible_command ();
4254         }
4255 }
4256
4257 void
4258 MarkerDrag::aborted (bool movement_occurred)
4259 {
4260         if (!movement_occurred) {
4261                 return;
4262         }
4263
4264         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4265
4266                 /* move all markers to their original location */
4267
4268
4269                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4270
4271                         bool is_start;
4272                         Location * location = _editor->find_location_from_marker (*m, is_start);
4273
4274                         if (location) {
4275                                 (*m)->set_position (is_start ? location->start() : location->end());
4276                         }
4277                 }
4278         }
4279 }
4280
4281 void
4282 MarkerDrag::update_item (Location*)
4283 {
4284         /* noop */
4285 }
4286
4287 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4288         : Drag (e, i)
4289         , _fixed_grab_x (0.0)
4290         , _fixed_grab_y (0.0)
4291         , _cumulative_x_drag (0.0)
4292         , _cumulative_y_drag (0.0)
4293         , _pushing (false)
4294         , _final_index (0)
4295 {
4296         if (_zero_gain_fraction < 0.0) {
4297                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4298         }
4299
4300         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4301
4302         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4303         assert (_point);
4304 }
4305
4306
4307 void
4308 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4309 {
4310         Drag::start_grab (event, _editor->cursors()->fader);
4311
4312         // start the grab at the center of the control point so
4313         // the point doesn't 'jump' to the mouse after the first drag
4314         _fixed_grab_x = _point->get_x();
4315         _fixed_grab_y = _point->get_y();
4316
4317         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4318         setup_snap_delta (pos);
4319
4320         float const fraction = 1 - (_point->get_y() / _point->line().height());
4321         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4322
4323         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4324
4325         if (!_point->can_slide ()) {
4326                 _x_constrained = true;
4327         }
4328 }
4329
4330 void
4331 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4332 {
4333         double dx = _drags->current_pointer_x() - last_pointer_x();
4334         double dy = current_pointer_y() - last_pointer_y();
4335         bool need_snap = true;
4336
4337         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4338                 dx *= 0.1;
4339                 dy *= 0.1;
4340                 need_snap = false;
4341         }
4342
4343         /* coordinate in pixels relative to the start of the region (for region-based automation)
4344            or track (for track-based automation) */
4345         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4346         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4347
4348         // calculate zero crossing point. back off by .01 to stay on the
4349         // positive side of zero
4350         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4351
4352         if (_x_constrained) {
4353                 cx = _fixed_grab_x;
4354         }
4355         if (_y_constrained) {
4356                 cy = _fixed_grab_y;
4357         }
4358
4359         _cumulative_x_drag = cx - _fixed_grab_x;
4360         _cumulative_y_drag = cy - _fixed_grab_y;
4361
4362         cx = max (0.0, cx);
4363         cy = max (0.0, cy);
4364         cy = min ((double) _point->line().height(), cy);
4365
4366         // make sure we hit zero when passing through
4367         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4368                 cy = zero_gain_y;
4369         }
4370
4371         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4372
4373         if (!_x_constrained && need_snap) {
4374                 _editor->snap_to_with_modifier (cx_frames, event);
4375         }
4376
4377         cx_frames -= snap_delta (event->button.state);
4378         cx_frames = min (cx_frames, _point->line().maximum_time());
4379
4380         float const fraction = 1.0 - (cy / _point->line().height());
4381
4382         if (first_motion) {
4383                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4384                 _editor->begin_reversible_command (_("automation event move"));
4385                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4386         }
4387         pair<double, float> result;
4388         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4389
4390         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4391 }
4392
4393 void
4394 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4395 {
4396         if (!movement_occurred) {
4397
4398                 /* just a click */
4399                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4400                         _editor->reset_point_selection ();
4401                 }
4402
4403         } else {
4404                 _point->line().end_drag (_pushing, _final_index);
4405                 _editor->commit_reversible_command ();
4406         }
4407 }
4408
4409 void
4410 ControlPointDrag::aborted (bool)
4411 {
4412         _point->line().reset ();
4413 }
4414
4415 bool
4416 ControlPointDrag::active (Editing::MouseMode m)
4417 {
4418         if (m == Editing::MouseDraw) {
4419                 /* always active in mouse draw */
4420                 return true;
4421         }
4422
4423         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4424         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4425 }
4426
4427 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4428         : Drag (e, i)
4429         , _line (0)
4430         , _fixed_grab_x (0.0)
4431         , _fixed_grab_y (0.0)
4432         , _cumulative_y_drag (0)
4433         , _before (0)
4434         , _after (0)
4435 {
4436         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4437 }
4438
4439 void
4440 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4441 {
4442         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4443         assert (_line);
4444
4445         _item = &_line->grab_item ();
4446
4447         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4448            origin, and ditto for y.
4449         */
4450
4451         double mx = event->button.x;
4452         double my = event->button.y;
4453
4454         _line->grab_item().canvas_to_item (mx, my);
4455
4456         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4457
4458         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4459                 /* no adjacent points */
4460                 return;
4461         }
4462
4463         Drag::start_grab (event, _editor->cursors()->fader);
4464
4465         /* store grab start in item frame */
4466         double const bx = _line->nth (_before)->get_x();
4467         double const ax = _line->nth (_after)->get_x();
4468         double const click_ratio = (ax - mx) / (ax - bx);
4469
4470         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4471
4472         _fixed_grab_x = mx;
4473         _fixed_grab_y = cy;
4474
4475         double fraction = 1.0 - (cy / _line->height());
4476
4477         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4478 }
4479
4480 void
4481 LineDrag::motion (GdkEvent* event, bool first_move)
4482 {
4483         double dy = current_pointer_y() - last_pointer_y();
4484
4485         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4486                 dy *= 0.1;
4487         }
4488
4489         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4490
4491         _cumulative_y_drag = cy - _fixed_grab_y;
4492
4493         cy = max (0.0, cy);
4494         cy = min ((double) _line->height(), cy);
4495
4496         double const fraction = 1.0 - (cy / _line->height());
4497         uint32_t ignored;
4498
4499         if (first_move) {
4500                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4501
4502                 _editor->begin_reversible_command (_("automation range move"));
4503                 _line->start_drag_line (_before, _after, initial_fraction);
4504         }
4505
4506         /* we are ignoring x position for this drag, so we can just pass in anything */
4507         pair<double, float> result;
4508
4509         result = _line->drag_motion (0, fraction, true, false, ignored);
4510         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4511 }
4512
4513 void
4514 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4515 {
4516         if (movement_occurred) {
4517                 motion (event, false);
4518                 _line->end_drag (false, 0);
4519                 _editor->commit_reversible_command ();
4520         } else {
4521                 /* add a new control point on the line */
4522
4523                 AutomationTimeAxisView* atv;
4524
4525                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4526                         framepos_t where = grab_frame ();
4527
4528                         double cx = 0;
4529                         double cy = _fixed_grab_y;
4530
4531                         _line->grab_item().item_to_canvas (cx, cy);
4532
4533                         atv->add_automation_event (event, where, cy, false);
4534                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4535                         AudioRegionView* arv;
4536
4537                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4538                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4539                         }
4540                 }
4541         }
4542 }
4543
4544 void
4545 LineDrag::aborted (bool)
4546 {
4547         _line->reset ();
4548 }
4549
4550 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4551         : Drag (e, i),
4552           _line (0),
4553           _arv (0),
4554           _region_view_grab_x (0.0),
4555           _cumulative_x_drag (0),
4556           _before (0.0),
4557           _max_x (0)
4558 {
4559         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4560 }
4561
4562 void
4563 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4564 {
4565         Drag::start_grab (event);
4566
4567         _line = reinterpret_cast<Line*> (_item);
4568         assert (_line);
4569
4570         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4571
4572         double cx = event->button.x;
4573         double cy = event->button.y;
4574
4575         _item->parent()->canvas_to_item (cx, cy);
4576
4577         /* store grab start in parent frame */
4578         _region_view_grab_x = cx;
4579
4580         _before = *(float*) _item->get_data ("position");
4581
4582         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4583
4584         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4585 }
4586
4587 void
4588 FeatureLineDrag::motion (GdkEvent*, bool)
4589 {
4590         double dx = _drags->current_pointer_x() - last_pointer_x();
4591
4592         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4593
4594         _cumulative_x_drag += dx;
4595
4596         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4597
4598         if (cx > _max_x){
4599                 cx = _max_x;
4600         }
4601         else if(cx < 0){
4602                 cx = 0;
4603         }
4604
4605         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4606         assert (bbox);
4607         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4608
4609         float *pos = new float;
4610         *pos = cx;
4611
4612         _line->set_data ("position", pos);
4613
4614         _before = cx;
4615 }
4616
4617 void
4618 FeatureLineDrag::finished (GdkEvent*, bool)
4619 {
4620         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4621         _arv->update_transient(_before, _before);
4622 }
4623
4624 void
4625 FeatureLineDrag::aborted (bool)
4626 {
4627         //_line->reset ();
4628 }
4629
4630 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4631         : Drag (e, i)
4632         , _vertical_only (false)
4633 {
4634         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4635 }
4636
4637 void
4638 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4639 {
4640         Drag::start_grab (event);
4641         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4642 }
4643
4644 void
4645 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4646 {
4647         framepos_t start;
4648         framepos_t end;
4649         double y1;
4650         double y2;
4651
4652         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4653
4654         framepos_t grab = grab_frame ();
4655         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4656                 _editor->snap_to_with_modifier (grab, event);
4657         } else {
4658                 grab = raw_grab_frame ();
4659         }
4660
4661         /* base start and end on initial click position */
4662
4663         if (pf < grab) {
4664                 start = pf;
4665                 end = grab;
4666         } else {
4667                 end = pf;
4668                 start = grab;
4669         }
4670
4671         if (current_pointer_y() < grab_y()) {
4672                 y1 = current_pointer_y();
4673                 y2 = grab_y();
4674         } else {
4675                 y2 = current_pointer_y();
4676                 y1 = grab_y();
4677         }
4678
4679         if (start != end || y1 != y2) {
4680
4681                 double x1 = _editor->sample_to_pixel (start);
4682                 double x2 = _editor->sample_to_pixel (end);
4683                 const double min_dimension = 2.0;
4684
4685                 if (_vertical_only) {
4686                         /* fixed 10 pixel width */
4687                         x2 = x1 + 10;
4688                 } else {
4689                         if (x2 < x1) {
4690                                 x2 = min (x1 - min_dimension, x2);
4691                         } else {
4692                                 x2 = max (x1 + min_dimension, x2);
4693                         }
4694                 }
4695
4696                 if (y2 < y1) {
4697                         y2 = min (y1 - min_dimension, y2);
4698                 } else {
4699                         y2 = max (y1 + min_dimension, y2);
4700                 }
4701
4702                 /* translate rect into item space and set */
4703
4704                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4705
4706                 /* this drag is a _trackview_only == true drag, so the y1 and
4707                  * y2 (computed using current_pointer_y() and grab_y()) will be
4708                  * relative to the top of the trackview group). The
4709                  * rubberband rect has the same parent/scroll offset as the
4710                  * the trackview group, so we can use the "r" rect directly
4711                  * to set the shape of the rubberband.
4712                  */
4713
4714                 _editor->rubberband_rect->set (r);
4715                 _editor->rubberband_rect->show();
4716                 _editor->rubberband_rect->raise_to_top();
4717
4718                 show_verbose_cursor_time (pf);
4719
4720                 do_select_things (event, true);
4721         }
4722 }
4723
4724 void
4725 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4726 {
4727         framepos_t x1;
4728         framepos_t x2;
4729         framepos_t grab = grab_frame ();
4730         framepos_t lpf = last_pointer_frame ();
4731
4732         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4733                 grab = raw_grab_frame ();
4734                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4735         }
4736
4737         if (grab < lpf) {
4738                 x1 = grab;
4739                 x2 = lpf;
4740         } else {
4741                 x2 = grab;
4742                 x1 = lpf;
4743         }
4744
4745         double y1;
4746         double y2;
4747
4748         if (current_pointer_y() < grab_y()) {
4749                 y1 = current_pointer_y();
4750                 y2 = grab_y();
4751         } else {
4752                 y2 = current_pointer_y();
4753                 y1 = grab_y();
4754         }
4755
4756         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4757 }
4758
4759 void
4760 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4761 {
4762         if (movement_occurred) {
4763
4764                 motion (event, false);
4765                 do_select_things (event, false);
4766
4767         } else {
4768
4769                 /* just a click */
4770
4771                 bool do_deselect = true;
4772                 MidiTimeAxisView* mtv;
4773
4774                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4775                         /* MIDI track */
4776                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4777                                 /* nothing selected */
4778                                 add_midi_region (mtv, true);
4779                                 do_deselect = false;
4780                         }
4781                 }
4782
4783                 /* do not deselect if Primary or Tertiary (toggle-select or
4784                  * extend-select are pressed.
4785                  */
4786
4787                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4788                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4789                     do_deselect) {
4790                         deselect_things ();
4791                 }
4792
4793         }
4794
4795         _editor->rubberband_rect->hide();
4796 }
4797
4798 void
4799 RubberbandSelectDrag::aborted (bool)
4800 {
4801         _editor->rubberband_rect->hide ();
4802 }
4803
4804 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4805         : RegionDrag (e, i, p, v)
4806 {
4807         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4808 }
4809
4810 void
4811 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4812 {
4813         Drag::start_grab (event, cursor);
4814
4815         _editor->get_selection().add (_primary);
4816
4817         framepos_t where = _primary->region()->position();
4818         setup_snap_delta (where);
4819
4820         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4821 }
4822
4823 void
4824 TimeFXDrag::motion (GdkEvent* event, bool)
4825 {
4826         RegionView* rv = _primary;
4827         StreamView* cv = rv->get_time_axis_view().view ();
4828
4829         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4830         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4831         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4832         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4833         _editor->snap_to_with_modifier (pf, event);
4834         pf -= snap_delta (event->button.state);
4835
4836         if (pf > rv->region()->position()) {
4837                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4838         }
4839
4840         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4841 }
4842
4843 void
4844 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4845 {
4846         /* this may have been a single click, no drag. We still want the dialog
4847            to show up in that case, so that the user can manually edit the
4848            parameters for the timestretch.
4849         */
4850
4851         float fraction = 1.0;
4852
4853         if (movement_occurred) {
4854
4855                 motion (event, false);
4856
4857                 _primary->get_time_axis_view().hide_timestretch ();
4858
4859                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4860
4861                 if (adjusted_frame_pos < _primary->region()->position()) {
4862                         /* backwards drag of the left edge - not usable */
4863                         return;
4864                 }
4865
4866                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4867
4868                 fraction = (double) newlen / (double) _primary->region()->length();
4869
4870 #ifndef USE_RUBBERBAND
4871                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4872                 if (_primary->region()->data_type() == DataType::AUDIO) {
4873                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4874                 }
4875 #endif
4876         }
4877
4878         if (!_editor->get_selection().regions.empty()) {
4879                 /* primary will already be included in the selection, and edit
4880                    group shared editing will propagate selection across
4881                    equivalent regions, so just use the current region
4882                    selection.
4883                 */
4884
4885                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4886                         error << _("An error occurred while executing time stretch operation") << endmsg;
4887                 }
4888         }
4889 }
4890
4891 void
4892 TimeFXDrag::aborted (bool)
4893 {
4894         _primary->get_time_axis_view().hide_timestretch ();
4895 }
4896
4897 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4898         : Drag (e, i)
4899 {
4900         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4901 }
4902
4903 void
4904 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4905 {
4906         Drag::start_grab (event);
4907 }
4908
4909 void
4910 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4911 {
4912         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4913 }
4914
4915 void
4916 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4917 {
4918         if (movement_occurred && _editor->session()) {
4919                 /* make sure we stop */
4920                 _editor->session()->request_transport_speed (0.0);
4921         }
4922 }
4923
4924 void
4925 ScrubDrag::aborted (bool)
4926 {
4927         /* XXX: TODO */
4928 }
4929
4930 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4931         : Drag (e, i)
4932         , _operation (o)
4933         , _add (false)
4934         , _time_selection_at_start (!_editor->get_selection().time.empty())
4935 {
4936         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4937
4938         if (_time_selection_at_start) {
4939                 start_at_start = _editor->get_selection().time.start();
4940                 end_at_start = _editor->get_selection().time.end_frame();
4941         }
4942 }
4943
4944 void
4945 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4946 {
4947         if (_editor->session() == 0) {
4948                 return;
4949         }
4950
4951         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4952
4953         switch (_operation) {
4954         case CreateSelection:
4955                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4956                         _add = true;
4957                 } else {
4958                         _add = false;
4959                 }
4960                 cursor = _editor->cursors()->selector;
4961                 Drag::start_grab (event, cursor);
4962                 break;
4963
4964         case SelectionStartTrim:
4965                 if (_editor->clicked_axisview) {
4966                         _editor->clicked_axisview->order_selection_trims (_item, true);
4967                 }
4968                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4969                 break;
4970
4971         case SelectionEndTrim:
4972                 if (_editor->clicked_axisview) {
4973                         _editor->clicked_axisview->order_selection_trims (_item, false);
4974                 }
4975                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4976                 break;
4977
4978         case SelectionMove:
4979                 Drag::start_grab (event, cursor);
4980                 break;
4981
4982         case SelectionExtend:
4983                 Drag::start_grab (event, cursor);
4984                 break;
4985         }
4986
4987         if (_operation == SelectionMove) {
4988                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4989         } else {
4990                 show_verbose_cursor_time (adjusted_current_frame (event));
4991         }
4992 }
4993
4994 void
4995 SelectionDrag::setup_pointer_frame_offset ()
4996 {
4997         switch (_operation) {
4998         case CreateSelection:
4999                 _pointer_frame_offset = 0;
5000                 break;
5001
5002         case SelectionStartTrim:
5003         case SelectionMove:
5004                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
5005                 break;
5006
5007         case SelectionEndTrim:
5008                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
5009                 break;
5010
5011         case SelectionExtend:
5012                 break;
5013         }
5014 }
5015
5016 void
5017 SelectionDrag::motion (GdkEvent* event, bool first_move)
5018 {
5019         framepos_t start = 0;
5020         framepos_t end = 0;
5021         framecnt_t length = 0;
5022         framecnt_t distance = 0;
5023
5024         framepos_t const pending_position = adjusted_current_frame (event);
5025
5026         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
5027                 return;
5028         }
5029
5030         switch (_operation) {
5031         case CreateSelection:
5032         {
5033                 framepos_t grab = grab_frame ();
5034
5035                 if (first_move) {
5036                         grab = adjusted_current_frame (event, false);
5037                         if (grab < pending_position) {
5038                                 _editor->snap_to (grab, RoundDownMaybe);
5039                         }  else {
5040                                 _editor->snap_to (grab, RoundUpMaybe);
5041                         }
5042                 }
5043
5044                 if (pending_position < grab) {
5045                         start = pending_position;
5046                         end = grab;
5047                 } else {
5048                         end = pending_position;
5049                         start = grab;
5050                 }
5051
5052                 /* first drag: Either add to the selection
5053                    or create a new selection
5054                 */
5055
5056                 if (first_move) {
5057
5058                         if (_add) {
5059
5060                                 /* adding to the selection */
5061                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5062                                 _editor->clicked_selection = _editor->selection->add (start, end);
5063                                 _add = false;
5064
5065                         } else {
5066
5067                                 /* new selection */
5068
5069                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5070                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5071                                 }
5072
5073                                 _editor->clicked_selection = _editor->selection->set (start, end);
5074                         }
5075                 }
5076
5077                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5078                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5079                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5080                 if (atest) {
5081                         _editor->selection->add (atest);
5082                         break;
5083                 }
5084
5085                 /* select all tracks within the rectangle that we've marked out so far */
5086                 TrackViewList new_selection;
5087                 TrackViewList& all_tracks (_editor->track_views);
5088
5089                 ArdourCanvas::Coord const top = grab_y();
5090                 ArdourCanvas::Coord const bottom = current_pointer_y();
5091
5092                 if (top >= 0 && bottom >= 0) {
5093
5094                         //first, find the tracks that are covered in the y range selection
5095                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5096                                 if ((*i)->covered_by_y_range (top, bottom)) {
5097                                         new_selection.push_back (*i);
5098                                 }
5099                         }
5100
5101                         //now find any tracks that are GROUPED with the tracks we selected
5102                         TrackViewList grouped_add = new_selection;
5103                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5104                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5105                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5106                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5107                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5108                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5109                                                         grouped_add.push_back (*j);
5110                                         }
5111                                 }
5112                         }
5113
5114                         //now compare our list with the current selection, and add or remove as necessary
5115                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5116                         TrackViewList tracks_to_add;
5117                         TrackViewList tracks_to_remove;
5118                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5119                                 if ( !_editor->selection->tracks.contains ( *i ) )
5120                                         tracks_to_add.push_back ( *i );
5121                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5122                                 if ( !grouped_add.contains ( *i ) )
5123                                         tracks_to_remove.push_back ( *i );
5124                         _editor->selection->add(tracks_to_add);
5125                         _editor->selection->remove(tracks_to_remove);
5126
5127                 }
5128         }
5129         break;
5130
5131         case SelectionStartTrim:
5132
5133                 end = _editor->selection->time[_editor->clicked_selection].end;
5134
5135                 if (pending_position > end) {
5136                         start = end;
5137                 } else {
5138                         start = pending_position;
5139                 }
5140                 break;
5141
5142         case SelectionEndTrim:
5143
5144                 start = _editor->selection->time[_editor->clicked_selection].start;
5145
5146                 if (pending_position < start) {
5147                         end = start;
5148                 } else {
5149                         end = pending_position;
5150                 }
5151
5152                 break;
5153
5154         case SelectionMove:
5155
5156                 start = _editor->selection->time[_editor->clicked_selection].start;
5157                 end = _editor->selection->time[_editor->clicked_selection].end;
5158
5159                 length = end - start;
5160                 distance = pending_position - start;
5161                 start = pending_position;
5162                 _editor->snap_to (start);
5163
5164                 end = start + length;
5165
5166                 break;
5167
5168         case SelectionExtend:
5169                 break;
5170         }
5171
5172         if (start != end) {
5173                 switch (_operation) {
5174                 case SelectionMove:
5175                         if (_time_selection_at_start) {
5176                                 _editor->selection->move_time (distance);
5177                         }
5178                         break;
5179                 default:
5180                         _editor->selection->replace (_editor->clicked_selection, start, end);
5181                 }
5182         }
5183
5184         if (_operation == SelectionMove) {
5185                 show_verbose_cursor_time(start);
5186         } else {
5187                 show_verbose_cursor_time(pending_position);
5188         }
5189 }
5190
5191 void
5192 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5193 {
5194         Session* s = _editor->session();
5195
5196         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5197         if (movement_occurred) {
5198                 motion (event, false);
5199                 /* XXX this is not object-oriented programming at all. ick */
5200                 if (_editor->selection->time.consolidate()) {
5201                         _editor->selection->TimeChanged ();
5202                 }
5203
5204                 /* XXX what if its a music time selection? */
5205                 if (s) {
5206                         if (s->get_play_range() && s->transport_rolling()) {
5207                                 s->request_play_range (&_editor->selection->time, true);
5208                         } else if (!s->config.get_external_sync()) {
5209                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5210                                         if (_operation == SelectionEndTrim)
5211                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5212                                         else
5213                                                 s->request_locate (_editor->get_selection().time.start());
5214                                 }
5215                         }
5216
5217                         if (_editor->get_selection().time.length() != 0) {
5218                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5219                         } else {
5220                                 s->clear_range_selection ();
5221                         }
5222                 }
5223
5224         } else {
5225                 /* just a click, no pointer movement.
5226                  */
5227
5228                 if (_operation == SelectionExtend) {
5229                         if (_time_selection_at_start) {
5230                                 framepos_t pos = adjusted_current_frame (event, false);
5231                                 framepos_t start = min (pos, start_at_start);
5232                                 framepos_t end = max (pos, end_at_start);
5233                                 _editor->selection->set (start, end);
5234                         }
5235                 } else {
5236                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5237                                 if (_editor->clicked_selection) {
5238                                         _editor->selection->remove (_editor->clicked_selection);
5239                                 }
5240                         } else {
5241                                 if (!_editor->clicked_selection) {
5242                                         _editor->selection->clear_time();
5243                                 }
5244                         }
5245                 }
5246
5247                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5248                         _editor->selection->set (_editor->clicked_axisview);
5249                 }
5250
5251                 if (s && s->get_play_range () && s->transport_rolling()) {
5252                         s->request_stop (false, false);
5253                 }
5254
5255         }
5256
5257         _editor->stop_canvas_autoscroll ();
5258         _editor->clicked_selection = 0;
5259         _editor->commit_reversible_selection_op ();
5260 }
5261
5262 void
5263 SelectionDrag::aborted (bool)
5264 {
5265         /* XXX: TODO */
5266 }
5267
5268 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5269         : Drag (e, i, false),
5270           _operation (o),
5271           _copy (false)
5272 {
5273         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5274
5275         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5276                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5277                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5278         _drag_rect->hide ();
5279
5280         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5281         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5282 }
5283
5284 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5285 {
5286         /* normal canvas items will be cleaned up when their parent group is deleted. But
5287            this item is created as the child of a long-lived parent group, and so we
5288            need to explicitly delete it.
5289         */
5290         delete _drag_rect;
5291 }
5292
5293 void
5294 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5295 {
5296         if (_editor->session() == 0) {
5297                 return;
5298         }
5299
5300         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5301
5302         if (!_editor->temp_location) {
5303                 _editor->temp_location = new Location (*_editor->session());
5304         }
5305
5306         switch (_operation) {
5307         case CreateSkipMarker:
5308         case CreateRangeMarker:
5309         case CreateTransportMarker:
5310         case CreateCDMarker:
5311
5312                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5313                         _copy = true;
5314                 } else {
5315                         _copy = false;
5316                 }
5317                 cursor = _editor->cursors()->selector;
5318                 break;
5319         }
5320
5321         Drag::start_grab (event, cursor);
5322
5323         show_verbose_cursor_time (adjusted_current_frame (event));
5324 }
5325
5326 void
5327 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5328 {
5329         framepos_t start = 0;
5330         framepos_t end = 0;
5331         ArdourCanvas::Rectangle *crect;
5332
5333         switch (_operation) {
5334         case CreateSkipMarker:
5335                 crect = _editor->range_bar_drag_rect;
5336                 break;
5337         case CreateRangeMarker:
5338                 crect = _editor->range_bar_drag_rect;
5339                 break;
5340         case CreateTransportMarker:
5341                 crect = _editor->transport_bar_drag_rect;
5342                 break;
5343         case CreateCDMarker:
5344                 crect = _editor->cd_marker_bar_drag_rect;
5345                 break;
5346         default:
5347                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5348                 return;
5349                 break;
5350         }
5351
5352         framepos_t const pf = adjusted_current_frame (event);
5353
5354         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5355                 framepos_t grab = grab_frame ();
5356                 _editor->snap_to (grab);
5357
5358                 if (pf < grab_frame()) {
5359                         start = pf;
5360                         end = grab;
5361                 } else {
5362                         end = pf;
5363                         start = grab;
5364                 }
5365
5366                 /* first drag: Either add to the selection
5367                    or create a new selection.
5368                 */
5369
5370                 if (first_move) {
5371
5372                         _editor->temp_location->set (start, end);
5373
5374                         crect->show ();
5375
5376                         update_item (_editor->temp_location);
5377                         _drag_rect->show();
5378                         //_drag_rect->raise_to_top();
5379
5380                 }
5381         }
5382
5383         if (start != end) {
5384                 _editor->temp_location->set (start, end);
5385
5386                 double x1 = _editor->sample_to_pixel (start);
5387                 double x2 = _editor->sample_to_pixel (end);
5388                 crect->set_x0 (x1);
5389                 crect->set_x1 (x2);
5390
5391                 update_item (_editor->temp_location);
5392         }
5393
5394         show_verbose_cursor_time (pf);
5395
5396 }
5397
5398 void
5399 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5400 {
5401         Location * newloc = 0;
5402         string rangename;
5403         int flags;
5404
5405         if (movement_occurred) {
5406                 motion (event, false);
5407                 _drag_rect->hide();
5408
5409                 switch (_operation) {
5410                 case CreateSkipMarker:
5411                 case CreateRangeMarker:
5412                 case CreateCDMarker:
5413                     {
5414                         XMLNode &before = _editor->session()->locations()->get_state();
5415                         if (_operation == CreateSkipMarker) {
5416                                 _editor->begin_reversible_command (_("new skip marker"));
5417                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5418                                 flags = Location::IsRangeMarker | Location::IsSkip;
5419                                 _editor->range_bar_drag_rect->hide();
5420                         } else if (_operation == CreateCDMarker) {
5421                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5422                                 _editor->begin_reversible_command (_("new CD marker"));
5423                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5424                                 _editor->cd_marker_bar_drag_rect->hide();
5425                         } else {
5426                                 _editor->begin_reversible_command (_("new skip marker"));
5427                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5428                                 flags = Location::IsRangeMarker;
5429                                 _editor->range_bar_drag_rect->hide();
5430                         }
5431                         newloc = new Location (
5432                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5433                                 );
5434
5435                         _editor->session()->locations()->add (newloc, true);
5436                         XMLNode &after = _editor->session()->locations()->get_state();
5437                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5438                         _editor->commit_reversible_command ();
5439                         break;
5440                     }
5441
5442                 case CreateTransportMarker:
5443                         // popup menu to pick loop or punch
5444                         _editor->new_transport_marker_context_menu (&event->button, _item);
5445                         break;
5446                 }
5447
5448         } else {
5449
5450                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5451
5452                 if (_operation == CreateTransportMarker) {
5453
5454                         /* didn't drag, so just locate */
5455
5456                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5457
5458                 } else if (_operation == CreateCDMarker) {
5459
5460                         /* didn't drag, but mark is already created so do
5461                          * nothing */
5462
5463                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5464
5465                         framepos_t start;
5466                         framepos_t end;
5467
5468                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5469
5470                         if (end == max_framepos) {
5471                                 end = _editor->session()->current_end_frame ();
5472                         }
5473
5474                         if (start == max_framepos) {
5475                                 start = _editor->session()->current_start_frame ();
5476                         }
5477
5478                         switch (_editor->mouse_mode) {
5479                         case MouseObject:
5480                                 /* find the two markers on either side and then make the selection from it */
5481                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5482                                 break;
5483
5484                         case MouseRange:
5485                                 /* find the two markers on either side of the click and make the range out of it */
5486                                 _editor->selection->set (start, end);
5487                                 break;
5488
5489                         default:
5490                                 break;
5491                         }
5492                 }
5493         }
5494
5495         _editor->stop_canvas_autoscroll ();
5496 }
5497
5498 void
5499 RangeMarkerBarDrag::aborted (bool movement_occurred)
5500 {
5501         if (movement_occurred) {
5502                 _drag_rect->hide ();
5503         }
5504 }
5505
5506 void
5507 RangeMarkerBarDrag::update_item (Location* location)
5508 {
5509         double const x1 = _editor->sample_to_pixel (location->start());
5510         double const x2 = _editor->sample_to_pixel (location->end());
5511
5512         _drag_rect->set_x0 (x1);
5513         _drag_rect->set_x1 (x2);
5514 }
5515
5516 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5517         : Drag (e, i)
5518         , _cumulative_dx (0)
5519         , _cumulative_dy (0)
5520         , _was_selected (false)
5521 {
5522         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5523
5524         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5525         assert (_primary);
5526         _region = &_primary->region_view ();
5527         _note_height = _region->midi_stream_view()->note_height ();
5528 }
5529
5530 void
5531 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5532 {
5533         Drag::start_grab (event);
5534         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5535
5536         if (!(_was_selected = _primary->selected())) {
5537
5538                 /* tertiary-click means extend selection - we'll do that on button release,
5539                    so don't add it here, because otherwise we make it hard to figure
5540                    out the "extend-to" range.
5541                 */
5542
5543                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5544
5545                 if (!extend) {
5546                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5547
5548                         if (add) {
5549                                 _region->note_selected (_primary, true);
5550                         } else {
5551                                 _editor->get_selection().clear_points();
5552                                 _region->unique_select (_primary);
5553                         }
5554                 }
5555         }
5556 }
5557
5558 /** @return Current total drag x change in frames */
5559 frameoffset_t
5560 NoteDrag::total_dx (const guint state) const
5561 {
5562         /* dx in frames */
5563         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5564
5565         /* primary note time */
5566         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5567
5568         /* new time of the primary note in session frames */
5569         frameoffset_t st = n + dx + snap_delta (state);
5570
5571         framepos_t const rp = _region->region()->position ();
5572
5573         /* prevent the note being dragged earlier than the region's position */
5574         st = max (st, rp);
5575
5576         /* possibly snap and return corresponding delta */
5577
5578         bool snap = true;
5579
5580         if (ArdourKeyboard::indicates_snap (state)) {
5581                 if (_editor->snap_mode () != SnapOff) {
5582                         snap = false;
5583                 }
5584         } else {
5585                 if (_editor->snap_mode () == SnapOff) {
5586                         snap = false;
5587                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5588                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5589                                 snap = true;
5590                         }
5591                 }
5592         }
5593
5594         frameoffset_t ret;
5595         if (snap) {
5596                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5597                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5598         } else {
5599                 ret = st - n - snap_delta (state);
5600         }
5601         return ret;
5602 }
5603
5604 /** @return Current total drag y change in note number */
5605 int8_t
5606 NoteDrag::total_dy () const
5607 {
5608         MidiStreamView* msv = _region->midi_stream_view ();
5609         double const y = _region->midi_view()->y_position ();
5610         /* new current note */
5611         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5612         /* clamp */
5613         n = max (msv->lowest_note(), n);
5614         n = min (msv->highest_note(), n);
5615         /* and work out delta */
5616         return n - msv->y_to_note (grab_y() - y);
5617 }
5618
5619 void
5620 NoteDrag::motion (GdkEvent * event, bool)
5621 {
5622         /* Total change in x and y since the start of the drag */
5623         frameoffset_t const dx = total_dx (event->button.state);
5624         int8_t const dy = total_dy ();
5625
5626         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5627         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5628         double const tdy = -dy * _note_height - _cumulative_dy;
5629
5630         if (tdx || tdy) {
5631                 _cumulative_dx += tdx;
5632                 _cumulative_dy += tdy;
5633
5634                 int8_t note_delta = total_dy();
5635
5636                 _region->move_selection (tdx, tdy, note_delta);
5637
5638                 /* the new note value may be the same as the old one, but we
5639                  * don't know what that means because the selection may have
5640                  * involved more than one note and we might be doing something
5641                  * odd with them. so show the note value anyway, always.
5642                  */
5643
5644                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5645
5646                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5647         }
5648 }
5649
5650 void
5651 NoteDrag::finished (GdkEvent* ev, bool moved)
5652 {
5653         if (!moved) {
5654                 /* no motion - select note */
5655
5656                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5657                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5658
5659                         bool changed = false;
5660
5661                         if (_was_selected) {
5662                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5663                                 if (add) {
5664                                         _region->note_deselected (_primary);
5665                                         changed = true;
5666                                 } else {
5667                                         _editor->get_selection().clear_points();
5668                                         _region->unique_select (_primary);
5669                                         changed = true;
5670                                 }
5671                         } else {
5672                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5673                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5674
5675                                 if (!extend && !add && _region->selection_size() > 1) {
5676                                         _editor->get_selection().clear_points();
5677                                         _region->unique_select (_primary);
5678                                         changed = true;
5679                                 } else if (extend) {
5680                                         _region->note_selected (_primary, true, true);
5681                                         changed = true;
5682                                 } else {
5683                                         /* it was added during button press */
5684                                         changed = true;
5685
5686                                 }
5687                         }
5688
5689                         if (changed) {
5690                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5691                                 _editor->commit_reversible_selection_op();
5692                         }
5693                 }
5694         } else {
5695                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5696         }
5697 }
5698
5699 void
5700 NoteDrag::aborted (bool)
5701 {
5702         /* XXX: TODO */
5703 }
5704
5705 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5706 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5707         : Drag (editor, atv->base_item ())
5708         , _ranges (r)
5709         , _y_origin (atv->y_position())
5710         , _nothing_to_drag (false)
5711 {
5712         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5713         setup (atv->lines ());
5714 }
5715
5716 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5717 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5718         : Drag (editor, rv->get_canvas_group ())
5719         , _ranges (r)
5720         , _y_origin (rv->get_time_axis_view().y_position())
5721         , _nothing_to_drag (false)
5722         , _integral (false)
5723 {
5724         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5725
5726         list<boost::shared_ptr<AutomationLine> > lines;
5727
5728         AudioRegionView*      audio_view;
5729         AutomationRegionView* automation_view;
5730         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5731                 lines.push_back (audio_view->get_gain_line ());
5732         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5733                 lines.push_back (automation_view->line ());
5734                 _integral = true;
5735         } else {
5736                 error << _("Automation range drag created for invalid region type") << endmsg;
5737         }
5738
5739         setup (lines);
5740 }
5741
5742 /** @param lines AutomationLines to drag.
5743  *  @param offset Offset from the session start to the points in the AutomationLines.
5744  */
5745 void
5746 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5747 {
5748         /* find the lines that overlap the ranges being dragged */
5749         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5750         while (i != lines.end ()) {
5751                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5752                 ++j;
5753
5754                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5755
5756                 /* check this range against all the AudioRanges that we are using */
5757                 list<AudioRange>::const_iterator k = _ranges.begin ();
5758                 while (k != _ranges.end()) {
5759                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5760                                 break;
5761                         }
5762                         ++k;
5763                 }
5764
5765                 /* add it to our list if it overlaps at all */
5766                 if (k != _ranges.end()) {
5767                         Line n;
5768                         n.line = *i;
5769                         n.state = 0;
5770                         n.range = r;
5771                         _lines.push_back (n);
5772                 }
5773
5774                 i = j;
5775         }
5776
5777         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5778 }
5779
5780 double
5781 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5782 {
5783         return 1.0 - ((global_y - _y_origin) / line->height());
5784 }
5785
5786 double
5787 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5788 {
5789         const double v = list->eval(x);
5790         return _integral ? rint(v) : v;
5791 }
5792
5793 void
5794 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5795 {
5796         Drag::start_grab (event, cursor);
5797
5798         /* Get line states before we start changing things */
5799         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5800                 i->state = &i->line->get_state ();
5801                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5802         }
5803
5804         if (_ranges.empty()) {
5805
5806                 /* No selected time ranges: drag all points */
5807                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5808                         uint32_t const N = i->line->npoints ();
5809                         for (uint32_t j = 0; j < N; ++j) {
5810                                 i->points.push_back (i->line->nth (j));
5811                         }
5812                 }
5813
5814         }
5815
5816         if (_nothing_to_drag) {
5817                 return;
5818         }
5819 }
5820
5821 void
5822 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5823 {
5824         if (_nothing_to_drag && !first_move) {
5825                 return;
5826         }
5827
5828         if (first_move) {
5829                 _editor->begin_reversible_command (_("automation range move"));
5830
5831                 if (!_ranges.empty()) {
5832
5833                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5834
5835                                 framecnt_t const half = (i->start + i->end) / 2;
5836
5837                                 /* find the line that this audio range starts in */
5838                                 list<Line>::iterator j = _lines.begin();
5839                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5840                                         ++j;
5841                                 }
5842
5843                                 if (j != _lines.end()) {
5844                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5845
5846                                 /* j is the line that this audio range starts in; fade into it;
5847                                    64 samples length plucked out of thin air.
5848                                 */
5849
5850                                         framepos_t a = i->start + 64;
5851                                         if (a > half) {
5852                                                 a = half;
5853                                         }
5854
5855                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5856                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5857
5858                                         XMLNode &before = the_list->get_state();
5859                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5860                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5861
5862                                         if (add_p || add_q) {
5863                                                 _editor->session()->add_command (
5864                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5865                                         }
5866                                 }
5867
5868                                 /* same thing for the end */
5869
5870                                 j = _lines.begin();
5871                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5872                                         ++j;
5873                                 }
5874
5875                                 if (j != _lines.end()) {
5876                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5877
5878                                         /* j is the line that this audio range starts in; fade out of it;
5879                                            64 samples length plucked out of thin air.
5880                                         */
5881
5882                                         framepos_t b = i->end - 64;
5883                                         if (b < half) {
5884                                                 b = half;
5885                                         }
5886
5887                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5888                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5889
5890                                         XMLNode &before = the_list->get_state();
5891                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5892                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5893
5894                                         if (add_p || add_q) {
5895                                                 _editor->session()->add_command (
5896                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5897                                         }
5898                                 }
5899                         }
5900
5901                         _nothing_to_drag = true;
5902
5903                         /* Find all the points that should be dragged and put them in the relevant
5904                            points lists in the Line structs.
5905                         */
5906
5907                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5908
5909                                 uint32_t const N = i->line->npoints ();
5910                                 for (uint32_t j = 0; j < N; ++j) {
5911
5912                                         /* here's a control point on this line */
5913                                         ControlPoint* p = i->line->nth (j);
5914                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5915
5916                                         /* see if it's inside a range */
5917                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5918                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5919                                                 ++k;
5920                                         }
5921
5922                                         if (k != _ranges.end()) {
5923                                                 /* dragging this point */
5924                                                 _nothing_to_drag = false;
5925                                                 i->points.push_back (p);
5926                                         }
5927                                 }
5928                         }
5929                 }
5930
5931                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5932                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5933                 }
5934         }
5935
5936         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5937                 float const f = y_fraction (l->line, current_pointer_y());
5938                 /* we are ignoring x position for this drag, so we can just pass in anything */
5939                 pair<double, float> result;
5940                 uint32_t ignored;
5941                 result = l->line->drag_motion (0, f, true, false, ignored);
5942                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5943         }
5944 }
5945
5946 void
5947 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5948 {
5949         if (_nothing_to_drag || !motion_occurred) {
5950                 return;
5951         }
5952
5953         motion (event, false);
5954         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5955                 i->line->end_drag (false, 0);
5956         }
5957
5958         _editor->commit_reversible_command ();
5959 }
5960
5961 void
5962 AutomationRangeDrag::aborted (bool)
5963 {
5964         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5965                 i->line->reset ();
5966         }
5967 }
5968
5969 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5970         : view (v)
5971         , initial_time_axis_view (itav)
5972 {
5973         /* note that time_axis_view may be null if the regionview was created
5974          * as part of a copy operation.
5975          */
5976         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5977         layer = v->region()->layer ();
5978         initial_y = v->get_canvas_group()->position().y;
5979         initial_playlist = v->region()->playlist ();
5980         initial_position = v->region()->position ();
5981         initial_end = v->region()->position () + v->region()->length ();
5982 }
5983
5984 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5985         : Drag (e, i->canvas_item ())
5986         , _region_view (r)
5987         , _patch_change (i)
5988         , _cumulative_dx (0)
5989 {
5990         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5991                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5992                                                    grab_frame()));
5993 }
5994
5995 void
5996 PatchChangeDrag::motion (GdkEvent* ev, bool)
5997 {
5998         framepos_t f = adjusted_current_frame (ev);
5999         boost::shared_ptr<Region> r = _region_view->region ();
6000         f = max (f, r->position ());
6001         f = min (f, r->last_frame ());
6002
6003         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
6004         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
6005         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
6006         _cumulative_dx = dxu;
6007 }
6008
6009 void
6010 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
6011 {
6012         if (!movement_occurred) {
6013                 return;
6014         }
6015
6016         boost::shared_ptr<Region> r (_region_view->region ());
6017         framepos_t f = adjusted_current_frame (ev);
6018         f = max (f, r->position ());
6019         f = min (f, r->last_frame ());
6020
6021         _region_view->move_patch_change (
6022                 *_patch_change,
6023                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
6024                 );
6025 }
6026
6027 void
6028 PatchChangeDrag::aborted (bool)
6029 {
6030         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
6031 }
6032
6033 void
6034 PatchChangeDrag::setup_pointer_frame_offset ()
6035 {
6036         boost::shared_ptr<Region> region = _region_view->region ();
6037         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
6038 }
6039
6040 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
6041         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6042         , _region_view (rv)
6043 {
6044
6045 }
6046
6047 void
6048 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
6049 {
6050         _region_view->update_drag_selection (
6051                 x1, x2, y1, y2,
6052                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
6053 }
6054
6055 void
6056 MidiRubberbandSelectDrag::deselect_things ()
6057 {
6058         /* XXX */
6059 }
6060
6061 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6062         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6063         , _region_view (rv)
6064 {
6065         _vertical_only = true;
6066 }
6067
6068 void
6069 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6070 {
6071         double const y = _region_view->midi_view()->y_position ();
6072
6073         y1 = max (0.0, y1 - y);
6074         y2 = max (0.0, y2 - y);
6075
6076         _region_view->update_vertical_drag_selection (
6077                 y1,
6078                 y2,
6079                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6080                 );
6081 }
6082
6083 void
6084 MidiVerticalSelectDrag::deselect_things ()
6085 {
6086         /* XXX */
6087 }
6088
6089 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6090         : RubberbandSelectDrag (e, i)
6091 {
6092
6093 }
6094
6095 void
6096 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6097 {
6098         if (drag_in_progress) {
6099                 /* We just want to select things at the end of the drag, not during it */
6100                 return;
6101         }
6102
6103         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6104
6105         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6106
6107         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6108
6109         _editor->commit_reversible_selection_op ();
6110 }
6111
6112 void
6113 EditorRubberbandSelectDrag::deselect_things ()
6114 {
6115         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6116
6117         _editor->selection->clear_tracks();
6118         _editor->selection->clear_regions();
6119         _editor->selection->clear_points ();
6120         _editor->selection->clear_lines ();
6121         _editor->selection->clear_midi_notes ();
6122
6123         _editor->commit_reversible_selection_op();
6124 }
6125
6126 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6127         : Drag (e, i)
6128         , _region_view (rv)
6129         , _drag_rect (0)
6130 {
6131         _note[0] = _note[1] = 0;
6132 }
6133
6134 NoteCreateDrag::~NoteCreateDrag ()
6135 {
6136         delete _drag_rect;
6137 }
6138
6139 framecnt_t
6140 NoteCreateDrag::grid_frames (framepos_t t) const
6141 {
6142         bool success;
6143         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6144         if (!success) {
6145                 grid_beats = Evoral::Beats(1);
6146         }
6147
6148         return _region_view->region_beats_to_region_frames (grid_beats);
6149 }
6150
6151 void
6152 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6153 {
6154         Drag::start_grab (event, cursor);
6155
6156         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6157
6158         framepos_t pf = _drags->current_pointer_frame ();
6159         framecnt_t const g = grid_frames (pf);
6160
6161         /* Hack so that we always snap to the note that we are over, instead of snapping
6162            to the next one if we're more than halfway through the one we're over.
6163         */
6164         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6165                 pf -= g / 2;
6166         }
6167
6168         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6169         _note[1] = _note[0];
6170
6171         MidiStreamView* sv = _region_view->midi_stream_view ();
6172         double const x = _editor->sample_to_pixel (_note[0]);
6173         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6174
6175         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6176         _drag_rect->set_outline_all ();
6177         _drag_rect->set_outline_color (0xffffff99);
6178         _drag_rect->set_fill_color (0xffffff66);
6179 }
6180
6181 void
6182 NoteCreateDrag::motion (GdkEvent* event, bool)
6183 {
6184         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6185         double const x0 = _editor->sample_to_pixel (_note[0]);
6186         double const x1 = _editor->sample_to_pixel (_note[1]);
6187         _drag_rect->set_x0 (std::min(x0, x1));
6188         _drag_rect->set_x1 (std::max(x0, x1));
6189 }
6190
6191 void
6192 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6193 {
6194         if (!had_movement) {
6195                 return;
6196         }
6197
6198         framepos_t const start = min (_note[0], _note[1]);
6199         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6200
6201         framecnt_t const g = grid_frames (start);
6202         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6203
6204         if (_editor->snap_mode() == SnapNormal && length < g) {
6205                 length = g;
6206         }
6207
6208         Evoral::Beats length_beats = max (
6209                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6210
6211         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6212 }
6213
6214 double
6215 NoteCreateDrag::y_to_region (double y) const
6216 {
6217         double x = 0;
6218         _region_view->get_canvas_group()->canvas_to_item (x, y);
6219         return y;
6220 }
6221
6222 void
6223 NoteCreateDrag::aborted (bool)
6224 {
6225
6226 }
6227
6228 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6229         : Drag (e, i)
6230         , arv (rv)
6231         , start (start_yn)
6232 {
6233         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6234 }
6235
6236 void
6237 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6238 {
6239         Drag::start_grab (event, cursor);
6240 }
6241
6242 void
6243 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6244 {
6245         double distance;
6246         double new_length;
6247         framecnt_t len;
6248
6249         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6250
6251         if (start) {
6252                 distance = _drags->current_pointer_x() - grab_x();
6253                 len = ar->fade_in()->back()->when;
6254         } else {
6255                 distance = grab_x() - _drags->current_pointer_x();
6256                 len = ar->fade_out()->back()->when;
6257         }
6258
6259         /* how long should it be ? */
6260
6261         new_length = len + _editor->pixel_to_sample (distance);
6262
6263         /* now check with the region that this is legal */
6264
6265         new_length = ar->verify_xfade_bounds (new_length, start);
6266
6267         if (start) {
6268                 arv->reset_fade_in_shape_width (ar, new_length);
6269         } else {
6270                 arv->reset_fade_out_shape_width (ar, new_length);
6271         }
6272 }
6273
6274 void
6275 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6276 {
6277         double distance;
6278         double new_length;
6279         framecnt_t len;
6280
6281         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6282
6283         if (start) {
6284                 distance = _drags->current_pointer_x() - grab_x();
6285                 len = ar->fade_in()->back()->when;
6286         } else {
6287                 distance = grab_x() - _drags->current_pointer_x();
6288                 len = ar->fade_out()->back()->when;
6289         }
6290
6291         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6292
6293         _editor->begin_reversible_command ("xfade trim");
6294         ar->playlist()->clear_owned_changes ();
6295
6296         if (start) {
6297                 ar->set_fade_in_length (new_length);
6298         } else {
6299                 ar->set_fade_out_length (new_length);
6300         }
6301
6302         /* Adjusting the xfade may affect other regions in the playlist, so we need
6303            to get undo Commands from the whole playlist rather than just the
6304            region.
6305         */
6306
6307         vector<Command*> cmds;
6308         ar->playlist()->rdiff (cmds);
6309         _editor->session()->add_commands (cmds);
6310         _editor->commit_reversible_command ();
6311
6312 }
6313
6314 void
6315 CrossfadeEdgeDrag::aborted (bool)
6316 {
6317         if (start) {
6318                 // arv->redraw_start_xfade ();
6319         } else {
6320                 // arv->redraw_end_xfade ();
6321         }
6322 }
6323
6324 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6325         : Drag (e, item, true)
6326         , line (new EditorCursor (*e))
6327 {
6328         line->set_position (pos);
6329         line->show ();
6330 }
6331
6332 RegionCutDrag::~RegionCutDrag ()
6333 {
6334         delete line;
6335 }
6336
6337 void
6338 RegionCutDrag::motion (GdkEvent*, bool)
6339 {
6340         framepos_t where = _drags->current_pointer_frame();
6341         _editor->snap_to (where);
6342
6343         line->set_position (where);
6344 }
6345
6346 void
6347 RegionCutDrag::finished (GdkEvent*, bool)
6348 {
6349         _editor->get_track_canvas()->canvas()->re_enter();
6350
6351         framepos_t pos = _drags->current_pointer_frame();
6352
6353         line->hide ();
6354
6355         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6356
6357         if (rs.empty()) {
6358                 return;
6359         }
6360
6361         _editor->split_regions_at (pos, rs);
6362 }
6363
6364 void
6365 RegionCutDrag::aborted (bool)
6366 {
6367 }