gtk2_ardour/editor_drag.cc

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