gtk2_ardour/editor_drag.cc

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