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         assert (_marker);
3258 }
3259
3260 void
3261 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3262 {
3263         Drag::start_grab (event, cursor);
3264         show_verbose_cursor_time (adjusted_current_frame (event));
3265 }
3266
3267 void
3268 TempoMarkerDrag::setup_pointer_frame_offset ()
3269 {
3270         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3271 }
3272
3273 void
3274 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3275 {
3276         if (!_marker->tempo().movable()) {
3277                 return;
3278         }
3279
3280         if (first_move) {
3281
3282                 // create a dummy marker for visual representation of moving the
3283                 // section, because whether its a copy or not, we're going to
3284                 // leave or lose the original marker (leave if its a copy; lose if its
3285                 // not, because we'll remove it from the map).
3286
3287                 // create a dummy marker for visual representation of moving the copy.
3288                 // The actual copying is not done before we reach the finish callback.
3289
3290                 char name[64];
3291                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3292
3293                 TempoSection section (_marker->tempo());
3294
3295                 _marker = new TempoMarker (
3296                         *_editor,
3297                         *_editor->tempo_group,
3298                         UIConfiguration::instance().color ("tempo marker"),
3299                         name,
3300                         *new TempoSection (_marker->tempo())
3301                         );
3302
3303                 /* use the new marker for the grab */
3304                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3305
3306                 if (!_copy) {
3307                         _editor->begin_reversible_command (_("move tempo mark"));
3308                         TempoMap& map (_editor->session()->tempo_map());
3309                         /* get current state */
3310                         before_state = &map.get_state();
3311                 }
3312                 _marker->hide();
3313         }
3314
3315         framepos_t const pf = adjusted_current_frame (event);
3316         Tempo const tp = _marker->tempo();
3317         _marker->set_position (pf);
3318
3319         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3320                 double new_bpm = tp.beats_per_minute() + ((grab_y() - current_pointer_y()) / 4.0);
3321                 _real_section->set_beats_per_minute (new_bpm);
3322                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3323         } else {
3324                 /* just here for a check/laugh
3325                    if (_real_section->position_lock_style() == MusicTime) {
3326                    const double baf = _editor->session()->tempo_map().beat_at_frame (pf);
3327                    _editor->session()->tempo_map().gui_move_tempo_beat (_real_section, tp, baf);
3328                    } else {
3329                 */
3330                 _editor->session()->tempo_map().gui_move_tempo_frame (_real_section, tp, pf);
3331                 //}
3332         }
3333
3334         show_verbose_cursor_time (pf);
3335 }
3336
3337 void
3338 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3339 {
3340         if (!movement_occurred) {
3341                 if (was_double_click()) {
3342                         _editor->edit_tempo_marker (*_marker);
3343                 }
3344                 return;
3345         }
3346
3347         if (!_marker->tempo().movable()) {
3348                 return;
3349         }
3350
3351         //motion (event, false);
3352
3353         TempoMap& map (_editor->session()->tempo_map());
3354
3355         if (_copy == true) {
3356                 _editor->begin_reversible_command (_("copy tempo mark"));
3357                 XMLNode &before = map.get_state();
3358
3359                 if (_marker->tempo().position_lock_style() == MusicTime) {
3360                         double const pulse = map.predict_tempo_pulse (_real_section, _marker->tempo(), _real_section->frame());
3361                         map.add_tempo (_marker->tempo(), pulse, _marker->tempo().type());
3362                 } else {
3363                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3364                 }
3365
3366                 XMLNode &after = map.get_state();
3367                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3368                 _editor->commit_reversible_command ();
3369
3370         } else {
3371                 if (_marker->tempo().position_lock_style() == MusicTime) {
3372                         double const pulse = map.predict_tempo_pulse (_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type()), _real_section->frame());
3373                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3374                                            , pulse, _marker->tempo().type());
3375                 } else {
3376                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3377                                            , _real_section->frame(), _marker->tempo().type());
3378                 }
3379
3380                 XMLNode &after = map.get_state();
3381                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3382                 _editor->commit_reversible_command ();
3383         }
3384
3385         // delete the dummy marker we used for visual representation while moving.
3386         // a new visual marker will show up automatically.
3387         delete _marker;
3388 }
3389
3390 void
3391 TempoMarkerDrag::aborted (bool moved)
3392 {
3393         _marker->set_position (_marker->tempo().frame());
3394         if (moved) {
3395                 TempoMap& map (_editor->session()->tempo_map());
3396                 /* we removed it before, so add it back now */
3397                 if (_marker->tempo().position_lock_style() == MusicTime) {
3398                         map.add_tempo (_marker->tempo(), _marker->tempo().pulse(), _marker->tempo().type());
3399                 } else {
3400                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3401                 }
3402                 // delete the dummy marker we used for visual representation while moving.
3403                 // a new visual marker will show up automatically.
3404                 delete _marker;
3405         }
3406 }
3407
3408 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3409         : Drag (e, &c.track_canvas_item(), false)
3410         , _cursor (c)
3411         , _stop (s)
3412         , _grab_zoom (0.0)
3413 {
3414         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3415 }
3416
3417 /** Do all the things we do when dragging the playhead to make it look as though
3418  *  we have located, without actually doing the locate (because that would cause
3419  *  the diskstream buffers to be refilled, which is too slow).
3420  */
3421 void
3422 CursorDrag::fake_locate (framepos_t t)
3423 {
3424         if (_editor->session () == 0) {
3425                 return;
3426         }
3427
3428         _editor->playhead_cursor->set_position (t);
3429
3430         Session* s = _editor->session ();
3431         if (s->timecode_transmission_suspended ()) {
3432                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3433                 /* This is asynchronous so it will be sent "now"
3434                  */
3435                 s->send_mmc_locate (f);
3436                 /* These are synchronous and will be sent during the next
3437                    process cycle
3438                 */
3439                 s->queue_full_time_code ();
3440                 s->queue_song_position_pointer ();
3441         }
3442
3443         show_verbose_cursor_time (t);
3444         _editor->UpdateAllTransportClocks (t);
3445 }
3446
3447 void
3448 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3449 {
3450         Drag::start_grab (event, c);
3451         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3452
3453         _grab_zoom = _editor->samples_per_pixel;
3454
3455         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3456
3457         _editor->snap_to_with_modifier (where, event);
3458
3459         _editor->_dragging_playhead = true;
3460
3461         Session* s = _editor->session ();
3462
3463         /* grab the track canvas item as well */
3464
3465         _cursor.track_canvas_item().grab();
3466
3467         if (s) {
3468                 if (_was_rolling && _stop) {
3469                         s->request_stop ();
3470                 }
3471
3472                 if (s->is_auditioning()) {
3473                         s->cancel_audition ();
3474                 }
3475
3476
3477                 if (AudioEngine::instance()->connected()) {
3478
3479                         /* do this only if we're the engine is connected
3480                          * because otherwise this request will never be
3481                          * serviced and we'll busy wait forever. likewise,
3482                          * notice if we are disconnected while waiting for the
3483                          * request to be serviced.
3484                          */
3485
3486                         s->request_suspend_timecode_transmission ();
3487                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3488                                 /* twiddle our thumbs */
3489                         }
3490                 }
3491         }
3492
3493         fake_locate (where - snap_delta (event->button.state));
3494 }
3495
3496 void
3497 CursorDrag::motion (GdkEvent* event, bool)
3498 {
3499         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3500         _editor->snap_to_with_modifier (where, event);
3501         if (where != last_pointer_frame()) {
3502                 fake_locate (where - snap_delta (event->button.state));
3503         }
3504 }
3505
3506 void
3507 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3508 {
3509         _editor->_dragging_playhead = false;
3510
3511         _cursor.track_canvas_item().ungrab();
3512
3513         if (!movement_occurred && _stop) {
3514                 return;
3515         }
3516
3517         motion (event, false);
3518
3519         Session* s = _editor->session ();
3520         if (s) {
3521                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3522                 _editor->_pending_locate_request = true;
3523                 s->request_resume_timecode_transmission ();
3524         }
3525 }
3526
3527 void
3528 CursorDrag::aborted (bool)
3529 {
3530         _cursor.track_canvas_item().ungrab();
3531
3532         if (_editor->_dragging_playhead) {
3533                 _editor->session()->request_resume_timecode_transmission ();
3534                 _editor->_dragging_playhead = false;
3535         }
3536
3537         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3538 }
3539
3540 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3541         : RegionDrag (e, i, p, v)
3542 {
3543         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3544 }
3545
3546 void
3547 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3548 {
3549         Drag::start_grab (event, cursor);
3550
3551         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3552         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3553         setup_snap_delta (r->position ());
3554
3555         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3556 }
3557
3558 void
3559 FadeInDrag::setup_pointer_frame_offset ()
3560 {
3561         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3562         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3563         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3564 }
3565
3566 void
3567 FadeInDrag::motion (GdkEvent* event, bool)
3568 {
3569         framecnt_t fade_length;
3570
3571         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3572         _editor->snap_to_with_modifier (pos, event);
3573         pos -= snap_delta (event->button.state);
3574
3575         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3576
3577         if (pos < (region->position() + 64)) {
3578                 fade_length = 64; // this should be a minimum defined somewhere
3579         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3580                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3581         } else {
3582                 fade_length = pos - region->position();
3583         }
3584
3585         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3586
3587                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3588
3589                 if (!tmp) {
3590                         continue;
3591                 }
3592
3593                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3594         }
3595
3596         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3597 }
3598
3599 void
3600 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3601 {
3602         if (!movement_occurred) {
3603                 return;
3604         }
3605
3606         framecnt_t fade_length;
3607         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3608         _editor->snap_to_with_modifier (pos, event);
3609         pos -= snap_delta (event->button.state);
3610
3611         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3612
3613         if (pos < (region->position() + 64)) {
3614                 fade_length = 64; // this should be a minimum defined somewhere
3615         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3616                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3617         } else {
3618                 fade_length = pos - region->position();
3619         }
3620
3621         bool in_command = false;
3622
3623         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3624
3625                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3626
3627                 if (!tmp) {
3628                         continue;
3629                 }
3630
3631                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3632                 XMLNode &before = alist->get_state();
3633
3634                 tmp->audio_region()->set_fade_in_length (fade_length);
3635                 tmp->audio_region()->set_fade_in_active (true);
3636
3637                 if (!in_command) {
3638                         _editor->begin_reversible_command (_("change fade in length"));
3639                         in_command = true;
3640                 }
3641                 XMLNode &after = alist->get_state();
3642                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3643         }
3644
3645         if (in_command) {
3646                 _editor->commit_reversible_command ();
3647         }
3648 }
3649
3650 void
3651 FadeInDrag::aborted (bool)
3652 {
3653         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3654                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3655
3656                 if (!tmp) {
3657                         continue;
3658                 }
3659
3660                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3661         }
3662 }
3663
3664 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3665         : RegionDrag (e, i, p, v)
3666 {
3667         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3668 }
3669
3670 void
3671 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3672 {
3673         Drag::start_grab (event, cursor);
3674
3675         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3676         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3677         setup_snap_delta (r->last_frame ());
3678
3679         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3680 }
3681
3682 void
3683 FadeOutDrag::setup_pointer_frame_offset ()
3684 {
3685         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3686         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3687         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3688 }
3689
3690 void
3691 FadeOutDrag::motion (GdkEvent* event, bool)
3692 {
3693         framecnt_t fade_length;
3694
3695         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3696         _editor->snap_to_with_modifier (pos, event);
3697         pos -= snap_delta (event->button.state);
3698
3699         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3700
3701         if (pos > (region->last_frame() - 64)) {
3702                 fade_length = 64; // this should really be a minimum fade defined somewhere
3703         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3704                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3705         } else {
3706                 fade_length = region->last_frame() - pos;
3707         }
3708
3709         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3710
3711                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3712
3713                 if (!tmp) {
3714                         continue;
3715                 }
3716
3717                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3718         }
3719
3720         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3721 }
3722
3723 void
3724 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3725 {
3726         if (!movement_occurred) {
3727                 return;
3728         }
3729
3730         framecnt_t fade_length;
3731
3732         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3733         _editor->snap_to_with_modifier (pos, event);
3734         pos -= snap_delta (event->button.state);
3735
3736         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3737
3738         if (pos > (region->last_frame() - 64)) {
3739                 fade_length = 64; // this should really be a minimum fade defined somewhere
3740         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3741                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3742         } else {
3743                 fade_length = region->last_frame() - pos;
3744         }
3745
3746         bool in_command = false;
3747
3748         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3749
3750                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3751
3752                 if (!tmp) {
3753                         continue;
3754                 }
3755
3756                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3757                 XMLNode &before = alist->get_state();
3758
3759                 tmp->audio_region()->set_fade_out_length (fade_length);
3760                 tmp->audio_region()->set_fade_out_active (true);
3761
3762                 if (!in_command) {
3763                         _editor->begin_reversible_command (_("change fade out length"));
3764                         in_command = true;
3765                 }
3766                 XMLNode &after = alist->get_state();
3767                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3768         }
3769
3770         if (in_command) {
3771                 _editor->commit_reversible_command ();
3772         }
3773 }
3774
3775 void
3776 FadeOutDrag::aborted (bool)
3777 {
3778         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3779                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3780
3781                 if (!tmp) {
3782                         continue;
3783                 }
3784
3785                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3786         }
3787 }
3788
3789 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3790         : Drag (e, i)
3791         , _selection_changed (false)
3792 {
3793         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3794         Gtk::Window* toplevel = _editor->current_toplevel();
3795         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3796
3797         assert (_marker);
3798
3799         _points.push_back (ArdourCanvas::Duple (0, 0));
3800
3801         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3802 }
3803
3804 MarkerDrag::~MarkerDrag ()
3805 {
3806         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3807                 delete i->location;
3808         }
3809 }
3810
3811 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3812 {
3813         location = new Location (*l);
3814         markers.push_back (m);
3815         move_both = false;
3816 }
3817
3818 void
3819 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3820 {
3821         Drag::start_grab (event, cursor);
3822
3823         bool is_start;
3824
3825         Location *location = _editor->find_location_from_marker (_marker, is_start);
3826         _editor->_dragging_edit_point = true;
3827
3828         update_item (location);
3829
3830         // _drag_line->show();
3831         // _line->raise_to_top();
3832
3833         if (is_start) {
3834                 show_verbose_cursor_time (location->start());
3835         } else {
3836                 show_verbose_cursor_time (location->end());
3837         }
3838         setup_snap_delta (is_start ? location->start() : location->end());
3839
3840         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3841
3842         switch (op) {
3843         case Selection::Toggle:
3844                 /* we toggle on the button release */
3845                 break;
3846         case Selection::Set:
3847                 if (!_editor->selection->selected (_marker)) {
3848                         _editor->selection->set (_marker);
3849                         _selection_changed = true;
3850                 }
3851                 break;
3852         case Selection::Extend:
3853         {
3854                 Locations::LocationList ll;
3855                 list<ArdourMarker*> to_add;
3856                 framepos_t s, e;
3857                 _editor->selection->markers.range (s, e);
3858                 s = min (_marker->position(), s);
3859                 e = max (_marker->position(), e);
3860                 s = min (s, e);
3861                 e = max (s, e);
3862                 if (e < max_framepos) {
3863                         ++e;
3864                 }
3865                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3866                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3867                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3868                         if (lm) {
3869                                 if (lm->start) {
3870                                         to_add.push_back (lm->start);
3871                                 }
3872                                 if (lm->end) {
3873                                         to_add.push_back (lm->end);
3874                                 }
3875                         }
3876                 }
3877                 if (!to_add.empty()) {
3878                         _editor->selection->add (to_add);
3879                         _selection_changed = true;
3880                 }
3881                 break;
3882         }
3883         case Selection::Add:
3884                 _editor->selection->add (_marker);
3885                 _selection_changed = true;
3886
3887                 break;
3888         }
3889
3890         /* Set up copies for us to manipulate during the drag
3891          */
3892
3893         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3894
3895                 Location* l = _editor->find_location_from_marker (*i, is_start);
3896
3897                 if (!l) {
3898                         continue;
3899                 }
3900
3901                 if (l->is_mark()) {
3902                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3903                 } else {
3904                         /* range: check that the other end of the range isn't
3905                            already there.
3906                         */
3907                         CopiedLocationInfo::iterator x;
3908                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3909                                 if (*(*x).location == *l) {
3910                                         break;
3911                                 }
3912                         }
3913                         if (x == _copied_locations.end()) {
3914                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3915                         } else {
3916                                 (*x).markers.push_back (*i);
3917                                 (*x).move_both = true;
3918                         }
3919                 }
3920
3921         }
3922 }
3923
3924 void
3925 MarkerDrag::setup_pointer_frame_offset ()
3926 {
3927         bool is_start;
3928         Location *location = _editor->find_location_from_marker (_marker, is_start);
3929         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3930 }
3931
3932 void
3933 MarkerDrag::motion (GdkEvent* event, bool)
3934 {
3935         framecnt_t f_delta = 0;
3936         bool is_start;
3937         bool move_both = false;
3938         Location *real_location;
3939         Location *copy_location = 0;
3940         framecnt_t const sd = snap_delta (event->button.state);
3941
3942         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3943         framepos_t next = newframe;
3944
3945         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3946                 move_both = true;
3947         }
3948
3949         CopiedLocationInfo::iterator x;
3950
3951         /* find the marker we're dragging, and compute the delta */
3952
3953         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3954
3955                 copy_location = (*x).location;
3956
3957                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3958
3959                         /* this marker is represented by this
3960                          * CopiedLocationMarkerInfo
3961                          */
3962
3963                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3964                                 /* que pasa ?? */
3965                                 return;
3966                         }
3967
3968                         if (real_location->is_mark()) {
3969                                 f_delta = newframe - copy_location->start();
3970                         } else {
3971
3972
3973                                 switch (_marker->type()) {
3974                                 case ArdourMarker::SessionStart:
3975                                 case ArdourMarker::RangeStart:
3976                                 case ArdourMarker::LoopStart:
3977                                 case ArdourMarker::PunchIn:
3978                                         f_delta = newframe - copy_location->start();
3979                                         break;
3980
3981                                 case ArdourMarker::SessionEnd:
3982                                 case ArdourMarker::RangeEnd:
3983                                 case ArdourMarker::LoopEnd:
3984                                 case ArdourMarker::PunchOut:
3985                                         f_delta = newframe - copy_location->end();
3986                                         break;
3987                                 default:
3988                                         /* what kind of marker is this ? */
3989                                         return;
3990                                 }
3991                         }
3992
3993                         break;
3994                 }
3995         }
3996
3997         if (x == _copied_locations.end()) {
3998                 /* hmm, impossible - we didn't find the dragged marker */
3999                 return;
4000         }
4001
4002         /* now move them all */
4003
4004         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4005
4006                 copy_location = x->location;
4007
4008                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4009                         continue;
4010                 }
4011
4012                 if (real_location->locked()) {
4013                         continue;
4014                 }
4015
4016                 if (copy_location->is_mark()) {
4017
4018                         /* now move it */
4019
4020                         copy_location->set_start (copy_location->start() + f_delta);
4021
4022                 } else {
4023
4024                         framepos_t new_start = copy_location->start() + f_delta;
4025                         framepos_t new_end = copy_location->end() + f_delta;
4026
4027                         if (is_start) { // start-of-range marker
4028
4029                                 if (move_both || (*x).move_both) {
4030                                         copy_location->set_start (new_start);
4031                                         copy_location->set_end (new_end);
4032                                 } else  if (new_start < copy_location->end()) {
4033                                         copy_location->set_start (new_start);
4034                                 } else if (newframe > 0) {
4035                                         //_editor->snap_to (next, RoundUpAlways, true);
4036                                         copy_location->set_end (next);
4037                                         copy_location->set_start (newframe);
4038                                 }
4039
4040                         } else { // end marker
4041
4042                                 if (move_both || (*x).move_both) {
4043                                         copy_location->set_end (new_end);
4044                                         copy_location->set_start (new_start);
4045                                 } else if (new_end > copy_location->start()) {
4046                                         copy_location->set_end (new_end);
4047                                 } else if (newframe > 0) {
4048                                         //_editor->snap_to (next, RoundDownAlways, true);
4049                                         copy_location->set_start (next);
4050                                         copy_location->set_end (newframe);
4051                                 }
4052                         }
4053                 }
4054
4055                 update_item (copy_location);
4056
4057                 /* now lookup the actual GUI items used to display this
4058                  * location and move them to wherever the copy of the location
4059                  * is now. This means that the logic in ARDOUR::Location is
4060                  * still enforced, even though we are not (yet) modifying
4061                  * the real Location itself.
4062                  */
4063
4064                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4065
4066                 if (lm) {
4067                         lm->set_position (copy_location->start(), copy_location->end());
4068                 }
4069
4070         }
4071
4072         assert (!_copied_locations.empty());
4073
4074         show_verbose_cursor_time (newframe);
4075 }
4076
4077 void
4078 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4079 {
4080         if (!movement_occurred) {
4081
4082                 if (was_double_click()) {
4083                         _editor->rename_marker (_marker);
4084                         return;
4085                 }
4086
4087                 /* just a click, do nothing but finish
4088                    off the selection process
4089                 */
4090
4091                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4092                 switch (op) {
4093                 case Selection::Set:
4094                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4095                                 _editor->selection->set (_marker);
4096                                 _selection_changed = true;
4097                         }
4098                         break;
4099
4100                 case Selection::Toggle:
4101                         /* we toggle on the button release, click only */
4102                         _editor->selection->toggle (_marker);
4103                         _selection_changed = true;
4104
4105                         break;
4106
4107                 case Selection::Extend:
4108                 case Selection::Add:
4109                         break;
4110                 }
4111
4112                 if (_selection_changed) {
4113                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4114                         _editor->commit_reversible_selection_op();
4115                 }
4116
4117                 return;
4118         }
4119
4120         _editor->_dragging_edit_point = false;
4121
4122         XMLNode &before = _editor->session()->locations()->get_state();
4123         bool in_command = false;
4124
4125         MarkerSelection::iterator i;
4126         CopiedLocationInfo::iterator x;
4127         bool is_start;
4128
4129         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4130              x != _copied_locations.end() && i != _editor->selection->markers.end();
4131              ++i, ++x) {
4132
4133                 Location * location = _editor->find_location_from_marker (*i, is_start);
4134
4135                 if (location) {
4136
4137                         if (location->locked()) {
4138                                 continue;
4139                         }
4140                         if (!in_command) {
4141                                 _editor->begin_reversible_command ( _("move marker") );
4142                                 in_command = true;
4143                         }
4144                         if (location->is_mark()) {
4145                                 location->set_start (((*x).location)->start());
4146                         } else {
4147                                 location->set (((*x).location)->start(), ((*x).location)->end());
4148                         }
4149                 }
4150         }
4151
4152         if (in_command) {
4153                 XMLNode &after = _editor->session()->locations()->get_state();
4154                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4155                 _editor->commit_reversible_command ();
4156         }
4157 }
4158
4159 void
4160 MarkerDrag::aborted (bool movement_occurred)
4161 {
4162         if (!movement_occurred) {
4163                 return;
4164         }
4165
4166         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4167
4168                 /* move all markers to their original location */
4169
4170
4171                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4172
4173                         bool is_start;
4174                         Location * location = _editor->find_location_from_marker (*m, is_start);
4175
4176                         if (location) {
4177                                 (*m)->set_position (is_start ? location->start() : location->end());
4178                         }
4179                 }
4180         }
4181 }
4182
4183 void
4184 MarkerDrag::update_item (Location*)
4185 {
4186         /* noop */
4187 }
4188
4189 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4190         : Drag (e, i)
4191         , _fixed_grab_x (0.0)
4192         , _fixed_grab_y (0.0)
4193         , _cumulative_x_drag (0.0)
4194         , _cumulative_y_drag (0.0)
4195         , _pushing (false)
4196         , _final_index (0)
4197 {
4198         if (_zero_gain_fraction < 0.0) {
4199                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4200         }
4201
4202         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4203
4204         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4205         assert (_point);
4206 }
4207
4208
4209 void
4210 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4211 {
4212         Drag::start_grab (event, _editor->cursors()->fader);
4213
4214         // start the grab at the center of the control point so
4215         // the point doesn't 'jump' to the mouse after the first drag
4216         _fixed_grab_x = _point->get_x();
4217         _fixed_grab_y = _point->get_y();
4218
4219         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4220         setup_snap_delta (pos);
4221
4222         float const fraction = 1 - (_point->get_y() / _point->line().height());
4223         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4224
4225         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4226
4227         if (!_point->can_slide ()) {
4228                 _x_constrained = true;
4229         }
4230 }
4231
4232 void
4233 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4234 {
4235         double dx = _drags->current_pointer_x() - last_pointer_x();
4236         double dy = current_pointer_y() - last_pointer_y();
4237         bool need_snap = true;
4238
4239         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4240                 dx *= 0.1;
4241                 dy *= 0.1;
4242                 need_snap = false;
4243         }
4244
4245         /* coordinate in pixels relative to the start of the region (for region-based automation)
4246            or track (for track-based automation) */
4247         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4248         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4249
4250         // calculate zero crossing point. back off by .01 to stay on the
4251         // positive side of zero
4252         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4253
4254         if (_x_constrained) {
4255                 cx = _fixed_grab_x;
4256         }
4257         if (_y_constrained) {
4258                 cy = _fixed_grab_y;
4259         }
4260
4261         _cumulative_x_drag = cx - _fixed_grab_x;
4262         _cumulative_y_drag = cy - _fixed_grab_y;
4263
4264         cx = max (0.0, cx);
4265         cy = max (0.0, cy);
4266         cy = min ((double) _point->line().height(), cy);
4267
4268         // make sure we hit zero when passing through
4269         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4270                 cy = zero_gain_y;
4271         }
4272
4273         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4274
4275         if (!_x_constrained && need_snap) {
4276                 _editor->snap_to_with_modifier (cx_frames, event);
4277         }
4278
4279         cx_frames -= snap_delta (event->button.state);
4280         cx_frames = min (cx_frames, _point->line().maximum_time());
4281
4282         float const fraction = 1.0 - (cy / _point->line().height());
4283
4284         if (first_motion) {
4285                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4286                 _editor->begin_reversible_command (_("automation event move"));
4287                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4288         }
4289         pair<double, float> result;
4290         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4291
4292         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4293 }
4294
4295 void
4296 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4297 {
4298         if (!movement_occurred) {
4299
4300                 /* just a click */
4301                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4302                         _editor->reset_point_selection ();
4303                 }
4304
4305         } else {
4306                 _point->line().end_drag (_pushing, _final_index);
4307                 _editor->commit_reversible_command ();
4308         }
4309 }
4310
4311 void
4312 ControlPointDrag::aborted (bool)
4313 {
4314         _point->line().reset ();
4315 }
4316
4317 bool
4318 ControlPointDrag::active (Editing::MouseMode m)
4319 {
4320         if (m == Editing::MouseDraw) {
4321                 /* always active in mouse draw */
4322                 return true;
4323         }
4324
4325         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4326         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4327 }
4328
4329 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4330         : Drag (e, i)
4331         , _line (0)
4332         , _fixed_grab_x (0.0)
4333         , _fixed_grab_y (0.0)
4334         , _cumulative_y_drag (0)
4335         , _before (0)
4336         , _after (0)
4337 {
4338         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4339 }
4340
4341 void
4342 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4343 {
4344         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4345         assert (_line);
4346
4347         _item = &_line->grab_item ();
4348
4349         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4350            origin, and ditto for y.
4351         */
4352
4353         double mx = event->button.x;
4354         double my = event->button.y;
4355
4356         _line->grab_item().canvas_to_item (mx, my);
4357
4358         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4359
4360         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4361                 /* no adjacent points */
4362                 return;
4363         }
4364
4365         Drag::start_grab (event, _editor->cursors()->fader);
4366
4367         /* store grab start in item frame */
4368         double const bx = _line->nth (_before)->get_x();
4369         double const ax = _line->nth (_after)->get_x();
4370         double const click_ratio = (ax - mx) / (ax - bx);
4371
4372         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4373
4374         _fixed_grab_x = mx;
4375         _fixed_grab_y = cy;
4376
4377         double fraction = 1.0 - (cy / _line->height());
4378
4379         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4380 }
4381
4382 void
4383 LineDrag::motion (GdkEvent* event, bool first_move)
4384 {
4385         double dy = current_pointer_y() - last_pointer_y();
4386
4387         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4388                 dy *= 0.1;
4389         }
4390
4391         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4392
4393         _cumulative_y_drag = cy - _fixed_grab_y;
4394
4395         cy = max (0.0, cy);
4396         cy = min ((double) _line->height(), cy);
4397
4398         double const fraction = 1.0 - (cy / _line->height());
4399         uint32_t ignored;
4400
4401         if (first_move) {
4402                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4403
4404                 _editor->begin_reversible_command (_("automation range move"));
4405                 _line->start_drag_line (_before, _after, initial_fraction);
4406         }
4407
4408         /* we are ignoring x position for this drag, so we can just pass in anything */
4409         pair<double, float> result;
4410
4411         result = _line->drag_motion (0, fraction, true, false, ignored);
4412         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4413 }
4414
4415 void
4416 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4417 {
4418         if (movement_occurred) {
4419                 motion (event, false);
4420                 _line->end_drag (false, 0);
4421                 _editor->commit_reversible_command ();
4422         } else {
4423                 /* add a new control point on the line */
4424
4425                 AutomationTimeAxisView* atv;
4426
4427                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4428                         framepos_t where = grab_frame ();
4429
4430                         double cx = 0;
4431                         double cy = _fixed_grab_y;
4432
4433                         _line->grab_item().item_to_canvas (cx, cy);
4434
4435                         atv->add_automation_event (event, where, cy, false);
4436                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4437                         AudioRegionView* arv;
4438
4439                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4440                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4441                         }
4442                 }
4443         }
4444 }
4445
4446 void
4447 LineDrag::aborted (bool)
4448 {
4449         _line->reset ();
4450 }
4451
4452 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4453         : Drag (e, i),
4454           _line (0),
4455           _arv (0),
4456           _region_view_grab_x (0.0),
4457           _cumulative_x_drag (0),
4458           _before (0.0),
4459           _max_x (0)
4460 {
4461         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4462 }
4463
4464 void
4465 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4466 {
4467         Drag::start_grab (event);
4468
4469         _line = reinterpret_cast<Line*> (_item);
4470         assert (_line);
4471
4472         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4473
4474         double cx = event->button.x;
4475         double cy = event->button.y;
4476
4477         _item->parent()->canvas_to_item (cx, cy);
4478
4479         /* store grab start in parent frame */
4480         _region_view_grab_x = cx;
4481
4482         _before = *(float*) _item->get_data ("position");
4483
4484         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4485
4486         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4487 }
4488
4489 void
4490 FeatureLineDrag::motion (GdkEvent*, bool)
4491 {
4492         double dx = _drags->current_pointer_x() - last_pointer_x();
4493
4494         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4495
4496         _cumulative_x_drag += dx;
4497
4498         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4499
4500         if (cx > _max_x){
4501                 cx = _max_x;
4502         }
4503         else if(cx < 0){
4504                 cx = 0;
4505         }
4506
4507         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4508         assert (bbox);
4509         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4510
4511         float *pos = new float;
4512         *pos = cx;
4513
4514         _line->set_data ("position", pos);
4515
4516         _before = cx;
4517 }
4518
4519 void
4520 FeatureLineDrag::finished (GdkEvent*, bool)
4521 {
4522         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4523         _arv->update_transient(_before, _before);
4524 }
4525
4526 void
4527 FeatureLineDrag::aborted (bool)
4528 {
4529         //_line->reset ();
4530 }
4531
4532 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4533         : Drag (e, i)
4534         , _vertical_only (false)
4535 {
4536         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4537 }
4538
4539 void
4540 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4541 {
4542         Drag::start_grab (event);
4543         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4544 }
4545
4546 void
4547 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4548 {
4549         framepos_t start;
4550         framepos_t end;
4551         double y1;
4552         double y2;
4553
4554         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4555
4556         framepos_t grab = grab_frame ();
4557         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4558                 _editor->snap_to_with_modifier (grab, event);
4559         } else {
4560                 grab = raw_grab_frame ();
4561         }
4562
4563         /* base start and end on initial click position */
4564
4565         if (pf < grab) {
4566                 start = pf;
4567                 end = grab;
4568         } else {
4569                 end = pf;
4570                 start = grab;
4571         }
4572
4573         if (current_pointer_y() < grab_y()) {
4574                 y1 = current_pointer_y();
4575                 y2 = grab_y();
4576         } else {
4577                 y2 = current_pointer_y();
4578                 y1 = grab_y();
4579         }
4580
4581         if (start != end || y1 != y2) {
4582
4583                 double x1 = _editor->sample_to_pixel (start);
4584                 double x2 = _editor->sample_to_pixel (end);
4585                 const double min_dimension = 2.0;
4586
4587                 if (_vertical_only) {
4588                         /* fixed 10 pixel width */
4589                         x2 = x1 + 10;
4590                 } else {
4591                         if (x2 < x1) {
4592                                 x2 = min (x1 - min_dimension, x2);
4593                         } else {
4594                                 x2 = max (x1 + min_dimension, x2);
4595                         }
4596                 }
4597
4598                 if (y2 < y1) {
4599                         y2 = min (y1 - min_dimension, y2);
4600                 } else {
4601                         y2 = max (y1 + min_dimension, y2);
4602                 }
4603
4604                 /* translate rect into item space and set */
4605
4606                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4607
4608                 /* this drag is a _trackview_only == true drag, so the y1 and
4609                  * y2 (computed using current_pointer_y() and grab_y()) will be
4610                  * relative to the top of the trackview group). The
4611                  * rubberband rect has the same parent/scroll offset as the
4612                  * the trackview group, so we can use the "r" rect directly
4613                  * to set the shape of the rubberband.
4614                  */
4615
4616                 _editor->rubberband_rect->set (r);
4617                 _editor->rubberband_rect->show();
4618                 _editor->rubberband_rect->raise_to_top();
4619
4620                 show_verbose_cursor_time (pf);
4621
4622                 do_select_things (event, true);
4623         }
4624 }
4625
4626 void
4627 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4628 {
4629         framepos_t x1;
4630         framepos_t x2;
4631         framepos_t grab = grab_frame ();
4632         framepos_t lpf = last_pointer_frame ();
4633
4634         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4635                 grab = raw_grab_frame ();
4636                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4637         }
4638
4639         if (grab < lpf) {
4640                 x1 = grab;
4641                 x2 = lpf;
4642         } else {
4643                 x2 = grab;
4644                 x1 = lpf;
4645         }
4646
4647         double y1;
4648         double y2;
4649
4650         if (current_pointer_y() < grab_y()) {
4651                 y1 = current_pointer_y();
4652                 y2 = grab_y();
4653         } else {
4654                 y2 = current_pointer_y();
4655                 y1 = grab_y();
4656         }
4657
4658         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4659 }
4660
4661 void
4662 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4663 {
4664         if (movement_occurred) {
4665
4666                 motion (event, false);
4667                 do_select_things (event, false);
4668
4669         } else {
4670
4671                 /* just a click */
4672
4673                 bool do_deselect = true;
4674                 MidiTimeAxisView* mtv;
4675
4676                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4677                         /* MIDI track */
4678                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4679                                 /* nothing selected */
4680                                 add_midi_region (mtv, true);
4681                                 do_deselect = false;
4682                         }
4683                 }
4684
4685                 /* do not deselect if Primary or Tertiary (toggle-select or
4686                  * extend-select are pressed.
4687                  */
4688
4689                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4690                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4691                     do_deselect) {
4692                         deselect_things ();
4693                 }
4694
4695         }
4696
4697         _editor->rubberband_rect->hide();
4698 }
4699
4700 void
4701 RubberbandSelectDrag::aborted (bool)
4702 {
4703         _editor->rubberband_rect->hide ();
4704 }
4705
4706 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4707         : RegionDrag (e, i, p, v)
4708 {
4709         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4710 }
4711
4712 void
4713 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4714 {
4715         Drag::start_grab (event, cursor);
4716
4717         _editor->get_selection().add (_primary);
4718
4719         framepos_t where = _primary->region()->position();
4720         setup_snap_delta (where);
4721
4722         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4723 }
4724
4725 void
4726 TimeFXDrag::motion (GdkEvent* event, bool)
4727 {
4728         RegionView* rv = _primary;
4729         StreamView* cv = rv->get_time_axis_view().view ();
4730
4731         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4732         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4733         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4734         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4735         _editor->snap_to_with_modifier (pf, event);
4736         pf -= snap_delta (event->button.state);
4737
4738         if (pf > rv->region()->position()) {
4739                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4740         }
4741
4742         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4743 }
4744
4745 void
4746 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4747 {
4748         /* this may have been a single click, no drag. We still want the dialog
4749            to show up in that case, so that the user can manually edit the
4750            parameters for the timestretch.
4751         */
4752
4753         float fraction = 1.0;
4754
4755         if (movement_occurred) {
4756
4757                 motion (event, false);
4758
4759                 _primary->get_time_axis_view().hide_timestretch ();
4760
4761                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4762
4763                 if (adjusted_frame_pos < _primary->region()->position()) {
4764                         /* backwards drag of the left edge - not usable */
4765                         return;
4766                 }
4767
4768                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4769
4770                 fraction = (double) newlen / (double) _primary->region()->length();
4771
4772 #ifndef USE_RUBBERBAND
4773                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4774                 if (_primary->region()->data_type() == DataType::AUDIO) {
4775                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4776                 }
4777 #endif
4778         }
4779
4780         if (!_editor->get_selection().regions.empty()) {
4781                 /* primary will already be included in the selection, and edit
4782                    group shared editing will propagate selection across
4783                    equivalent regions, so just use the current region
4784                    selection.
4785                 */
4786
4787                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4788                         error << _("An error occurred while executing time stretch operation") << endmsg;
4789                 }
4790         }
4791 }
4792
4793 void
4794 TimeFXDrag::aborted (bool)
4795 {
4796         _primary->get_time_axis_view().hide_timestretch ();
4797 }
4798
4799 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4800         : Drag (e, i)
4801 {
4802         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4803 }
4804
4805 void
4806 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4807 {
4808         Drag::start_grab (event);
4809 }
4810
4811 void
4812 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4813 {
4814         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4815 }
4816
4817 void
4818 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4819 {
4820         if (movement_occurred && _editor->session()) {
4821                 /* make sure we stop */
4822                 _editor->session()->request_transport_speed (0.0);
4823         }
4824 }
4825
4826 void
4827 ScrubDrag::aborted (bool)
4828 {
4829         /* XXX: TODO */
4830 }
4831
4832 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4833         : Drag (e, i)
4834         , _operation (o)
4835         , _add (false)
4836         , _time_selection_at_start (!_editor->get_selection().time.empty())
4837 {
4838         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4839
4840         if (_time_selection_at_start) {
4841                 start_at_start = _editor->get_selection().time.start();
4842                 end_at_start = _editor->get_selection().time.end_frame();
4843         }
4844 }
4845
4846 void
4847 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4848 {
4849         if (_editor->session() == 0) {
4850                 return;
4851         }
4852
4853         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4854
4855         switch (_operation) {
4856         case CreateSelection:
4857                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4858                         _add = true;
4859                 } else {
4860                         _add = false;
4861                 }
4862                 cursor = _editor->cursors()->selector;
4863                 Drag::start_grab (event, cursor);
4864                 break;
4865
4866         case SelectionStartTrim:
4867                 if (_editor->clicked_axisview) {
4868                         _editor->clicked_axisview->order_selection_trims (_item, true);
4869                 }
4870                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4871                 break;
4872
4873         case SelectionEndTrim:
4874                 if (_editor->clicked_axisview) {
4875                         _editor->clicked_axisview->order_selection_trims (_item, false);
4876                 }
4877                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4878                 break;
4879
4880         case SelectionMove:
4881                 Drag::start_grab (event, cursor);
4882                 break;
4883
4884         case SelectionExtend:
4885                 Drag::start_grab (event, cursor);
4886                 break;
4887         }
4888
4889         if (_operation == SelectionMove) {
4890                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4891         } else {
4892                 show_verbose_cursor_time (adjusted_current_frame (event));
4893         }
4894 }
4895
4896 void
4897 SelectionDrag::setup_pointer_frame_offset ()
4898 {
4899         switch (_operation) {
4900         case CreateSelection:
4901                 _pointer_frame_offset = 0;
4902                 break;
4903
4904         case SelectionStartTrim:
4905         case SelectionMove:
4906                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4907                 break;
4908
4909         case SelectionEndTrim:
4910                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4911                 break;
4912
4913         case SelectionExtend:
4914                 break;
4915         }
4916 }
4917
4918 void
4919 SelectionDrag::motion (GdkEvent* event, bool first_move)
4920 {
4921         framepos_t start = 0;
4922         framepos_t end = 0;
4923         framecnt_t length = 0;
4924         framecnt_t distance = 0;
4925
4926         framepos_t const pending_position = adjusted_current_frame (event);
4927
4928         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4929                 return;
4930         }
4931
4932         switch (_operation) {
4933         case CreateSelection:
4934         {
4935                 framepos_t grab = grab_frame ();
4936
4937                 if (first_move) {
4938                         grab = adjusted_current_frame (event, false);
4939                         if (grab < pending_position) {
4940                                 _editor->snap_to (grab, RoundDownMaybe);
4941                         }  else {
4942                                 _editor->snap_to (grab, RoundUpMaybe);
4943                         }
4944                 }
4945
4946                 if (pending_position < grab) {
4947                         start = pending_position;
4948                         end = grab;
4949                 } else {
4950                         end = pending_position;
4951                         start = grab;
4952                 }
4953
4954                 /* first drag: Either add to the selection
4955                    or create a new selection
4956                 */
4957
4958                 if (first_move) {
4959
4960                         if (_add) {
4961
4962                                 /* adding to the selection */
4963                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4964                                 _editor->clicked_selection = _editor->selection->add (start, end);
4965                                 _add = false;
4966
4967                         } else {
4968
4969                                 /* new selection */
4970
4971                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4972                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4973                                 }
4974
4975                                 _editor->clicked_selection = _editor->selection->set (start, end);
4976                         }
4977                 }
4978
4979                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4980                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4981                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4982                 if (atest) {
4983                         _editor->selection->add (atest);
4984                         break;
4985                 }
4986
4987                 /* select all tracks within the rectangle that we've marked out so far */
4988                 TrackViewList new_selection;
4989                 TrackViewList& all_tracks (_editor->track_views);
4990
4991                 ArdourCanvas::Coord const top = grab_y();
4992                 ArdourCanvas::Coord const bottom = current_pointer_y();
4993
4994                 if (top >= 0 && bottom >= 0) {
4995
4996                         //first, find the tracks that are covered in the y range selection
4997                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4998                                 if ((*i)->covered_by_y_range (top, bottom)) {
4999                                         new_selection.push_back (*i);
5000                                 }
5001                         }
5002
5003                         //now find any tracks that are GROUPED with the tracks we selected
5004                         TrackViewList grouped_add = new_selection;
5005                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5006                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5007                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5008                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5009                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5010                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5011                                                         grouped_add.push_back (*j);
5012                                         }
5013                                 }
5014                         }
5015
5016                         //now compare our list with the current selection, and add or remove as necessary
5017                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5018                         TrackViewList tracks_to_add;
5019                         TrackViewList tracks_to_remove;
5020                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5021                                 if ( !_editor->selection->tracks.contains ( *i ) )
5022                                         tracks_to_add.push_back ( *i );
5023                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5024                                 if ( !grouped_add.contains ( *i ) )
5025                                         tracks_to_remove.push_back ( *i );
5026                         _editor->selection->add(tracks_to_add);
5027                         _editor->selection->remove(tracks_to_remove);
5028
5029                 }
5030         }
5031         break;
5032
5033         case SelectionStartTrim:
5034
5035                 end = _editor->selection->time[_editor->clicked_selection].end;
5036
5037                 if (pending_position > end) {
5038                         start = end;
5039                 } else {
5040                         start = pending_position;
5041                 }
5042                 break;
5043
5044         case SelectionEndTrim:
5045
5046                 start = _editor->selection->time[_editor->clicked_selection].start;
5047
5048                 if (pending_position < start) {
5049                         end = start;
5050                 } else {
5051                         end = pending_position;
5052                 }
5053
5054                 break;
5055
5056         case SelectionMove:
5057
5058                 start = _editor->selection->time[_editor->clicked_selection].start;
5059                 end = _editor->selection->time[_editor->clicked_selection].end;
5060
5061                 length = end - start;
5062                 distance = pending_position - start;
5063                 start = pending_position;
5064                 _editor->snap_to (start);
5065
5066                 end = start + length;
5067
5068                 break;
5069
5070         case SelectionExtend:
5071                 break;
5072         }
5073
5074         if (start != end) {
5075                 switch (_operation) {
5076                 case SelectionMove:
5077                         if (_time_selection_at_start) {
5078                                 _editor->selection->move_time (distance);
5079                         }
5080                         break;
5081                 default:
5082                         _editor->selection->replace (_editor->clicked_selection, start, end);
5083                 }
5084         }
5085
5086         if (_operation == SelectionMove) {
5087                 show_verbose_cursor_time(start);
5088         } else {
5089                 show_verbose_cursor_time(pending_position);
5090         }
5091 }
5092
5093 void
5094 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5095 {
5096         Session* s = _editor->session();
5097
5098         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5099         if (movement_occurred) {
5100                 motion (event, false);
5101                 /* XXX this is not object-oriented programming at all. ick */
5102                 if (_editor->selection->time.consolidate()) {
5103                         _editor->selection->TimeChanged ();
5104                 }
5105
5106                 /* XXX what if its a music time selection? */
5107                 if (s) {
5108                         if (s->get_play_range() && s->transport_rolling()) {
5109                                 s->request_play_range (&_editor->selection->time, true);
5110                         } else if (!s->config.get_external_sync()) {
5111                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5112                                         if (_operation == SelectionEndTrim)
5113                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5114                                         else
5115                                                 s->request_locate (_editor->get_selection().time.start());
5116                                 }
5117                         }
5118
5119                         if (_editor->get_selection().time.length() != 0) {
5120                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5121                         } else {
5122                                 s->clear_range_selection ();
5123                         }
5124                 }
5125
5126         } else {
5127                 /* just a click, no pointer movement.
5128                  */
5129
5130                 if (_operation == SelectionExtend) {
5131                         if (_time_selection_at_start) {
5132                                 framepos_t pos = adjusted_current_frame (event, false);
5133                                 framepos_t start = min (pos, start_at_start);
5134                                 framepos_t end = max (pos, end_at_start);
5135                                 _editor->selection->set (start, end);
5136                         }
5137                 } else {
5138                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5139                                 if (_editor->clicked_selection) {
5140                                         _editor->selection->remove (_editor->clicked_selection);
5141                                 }
5142                         } else {
5143                                 if (!_editor->clicked_selection) {
5144                                         _editor->selection->clear_time();
5145                                 }
5146                         }
5147                 }
5148
5149                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5150                         _editor->selection->set (_editor->clicked_axisview);
5151                 }
5152
5153                 if (s && s->get_play_range () && s->transport_rolling()) {
5154                         s->request_stop (false, false);
5155                 }
5156
5157         }
5158
5159         _editor->stop_canvas_autoscroll ();
5160         _editor->clicked_selection = 0;
5161         _editor->commit_reversible_selection_op ();
5162 }
5163
5164 void
5165 SelectionDrag::aborted (bool)
5166 {
5167         /* XXX: TODO */
5168 }
5169
5170 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5171         : Drag (e, i, false),
5172           _operation (o),
5173           _copy (false)
5174 {
5175         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5176
5177         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5178                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5179                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5180         _drag_rect->hide ();
5181
5182         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5183         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5184 }
5185
5186 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5187 {
5188         /* normal canvas items will be cleaned up when their parent group is deleted. But
5189            this item is created as the child of a long-lived parent group, and so we
5190            need to explicitly delete it.
5191         */
5192         delete _drag_rect;
5193 }
5194
5195 void
5196 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5197 {
5198         if (_editor->session() == 0) {
5199                 return;
5200         }
5201
5202         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5203
5204         if (!_editor->temp_location) {
5205                 _editor->temp_location = new Location (*_editor->session());
5206         }
5207
5208         switch (_operation) {
5209         case CreateSkipMarker:
5210         case CreateRangeMarker:
5211         case CreateTransportMarker:
5212         case CreateCDMarker:
5213
5214                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5215                         _copy = true;
5216                 } else {
5217                         _copy = false;
5218                 }
5219                 cursor = _editor->cursors()->selector;
5220                 break;
5221         }
5222
5223         Drag::start_grab (event, cursor);
5224
5225         show_verbose_cursor_time (adjusted_current_frame (event));
5226 }
5227
5228 void
5229 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5230 {
5231         framepos_t start = 0;
5232         framepos_t end = 0;
5233         ArdourCanvas::Rectangle *crect;
5234
5235         switch (_operation) {
5236         case CreateSkipMarker:
5237                 crect = _editor->range_bar_drag_rect;
5238                 break;
5239         case CreateRangeMarker:
5240                 crect = _editor->range_bar_drag_rect;
5241                 break;
5242         case CreateTransportMarker:
5243                 crect = _editor->transport_bar_drag_rect;
5244                 break;
5245         case CreateCDMarker:
5246                 crect = _editor->cd_marker_bar_drag_rect;
5247                 break;
5248         default:
5249                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5250                 return;
5251                 break;
5252         }
5253
5254         framepos_t const pf = adjusted_current_frame (event);
5255
5256         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5257                 framepos_t grab = grab_frame ();
5258                 _editor->snap_to (grab);
5259
5260                 if (pf < grab_frame()) {
5261                         start = pf;
5262                         end = grab;
5263                 } else {
5264                         end = pf;
5265                         start = grab;
5266                 }
5267
5268                 /* first drag: Either add to the selection
5269                    or create a new selection.
5270                 */
5271
5272                 if (first_move) {
5273
5274                         _editor->temp_location->set (start, end);
5275
5276                         crect->show ();
5277
5278                         update_item (_editor->temp_location);
5279                         _drag_rect->show();
5280                         //_drag_rect->raise_to_top();
5281
5282                 }
5283         }
5284
5285         if (start != end) {
5286                 _editor->temp_location->set (start, end);
5287
5288                 double x1 = _editor->sample_to_pixel (start);
5289                 double x2 = _editor->sample_to_pixel (end);
5290                 crect->set_x0 (x1);
5291                 crect->set_x1 (x2);
5292
5293                 update_item (_editor->temp_location);
5294         }
5295
5296         show_verbose_cursor_time (pf);
5297
5298 }
5299
5300 void
5301 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5302 {
5303         Location * newloc = 0;
5304         string rangename;
5305         int flags;
5306
5307         if (movement_occurred) {
5308                 motion (event, false);
5309                 _drag_rect->hide();
5310
5311                 switch (_operation) {
5312                 case CreateSkipMarker:
5313                 case CreateRangeMarker:
5314                 case CreateCDMarker:
5315                     {
5316                         XMLNode &before = _editor->session()->locations()->get_state();
5317                         if (_operation == CreateSkipMarker) {
5318                                 _editor->begin_reversible_command (_("new skip marker"));
5319                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5320                                 flags = Location::IsRangeMarker | Location::IsSkip;
5321                                 _editor->range_bar_drag_rect->hide();
5322                         } else if (_operation == CreateCDMarker) {
5323                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5324                                 _editor->begin_reversible_command (_("new CD marker"));
5325                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5326                                 _editor->cd_marker_bar_drag_rect->hide();
5327                         } else {
5328                                 _editor->begin_reversible_command (_("new skip marker"));
5329                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5330                                 flags = Location::IsRangeMarker;
5331                                 _editor->range_bar_drag_rect->hide();
5332                         }
5333                         newloc = new Location (
5334                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5335                                 );
5336
5337                         _editor->session()->locations()->add (newloc, true);
5338                         XMLNode &after = _editor->session()->locations()->get_state();
5339                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5340                         _editor->commit_reversible_command ();
5341                         break;
5342                     }
5343
5344                 case CreateTransportMarker:
5345                         // popup menu to pick loop or punch
5346                         _editor->new_transport_marker_context_menu (&event->button, _item);
5347                         break;
5348                 }
5349
5350         } else {
5351
5352                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5353
5354                 if (_operation == CreateTransportMarker) {
5355
5356                         /* didn't drag, so just locate */
5357
5358                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5359
5360                 } else if (_operation == CreateCDMarker) {
5361
5362                         /* didn't drag, but mark is already created so do
5363                          * nothing */
5364
5365                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5366
5367                         framepos_t start;
5368                         framepos_t end;
5369
5370                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5371
5372                         if (end == max_framepos) {
5373                                 end = _editor->session()->current_end_frame ();
5374                         }
5375
5376                         if (start == max_framepos) {
5377                                 start = _editor->session()->current_start_frame ();
5378                         }
5379
5380                         switch (_editor->mouse_mode) {
5381                         case MouseObject:
5382                                 /* find the two markers on either side and then make the selection from it */
5383                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5384                                 break;
5385
5386                         case MouseRange:
5387                                 /* find the two markers on either side of the click and make the range out of it */
5388                                 _editor->selection->set (start, end);
5389                                 break;
5390
5391                         default:
5392                                 break;
5393                         }
5394                 }
5395         }
5396
5397         _editor->stop_canvas_autoscroll ();
5398 }
5399
5400 void
5401 RangeMarkerBarDrag::aborted (bool movement_occurred)
5402 {
5403         if (movement_occurred) {
5404                 _drag_rect->hide ();
5405         }
5406 }
5407
5408 void
5409 RangeMarkerBarDrag::update_item (Location* location)
5410 {
5411         double const x1 = _editor->sample_to_pixel (location->start());
5412         double const x2 = _editor->sample_to_pixel (location->end());
5413
5414         _drag_rect->set_x0 (x1);
5415         _drag_rect->set_x1 (x2);
5416 }
5417
5418 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5419         : Drag (e, i)
5420         , _cumulative_dx (0)
5421         , _cumulative_dy (0)
5422         , _was_selected (false)
5423 {
5424         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5425
5426         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5427         assert (_primary);
5428         _region = &_primary->region_view ();
5429         _note_height = _region->midi_stream_view()->note_height ();
5430 }
5431
5432 void
5433 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5434 {
5435         Drag::start_grab (event);
5436         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5437
5438         if (!(_was_selected = _primary->selected())) {
5439
5440                 /* tertiary-click means extend selection - we'll do that on button release,
5441                    so don't add it here, because otherwise we make it hard to figure
5442                    out the "extend-to" range.
5443                 */
5444
5445                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5446
5447                 if (!extend) {
5448                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5449
5450                         if (add) {
5451                                 _region->note_selected (_primary, true);
5452                         } else {
5453                                 _editor->get_selection().clear_points();
5454                                 _region->unique_select (_primary);
5455                         }
5456                 }
5457         }
5458 }
5459
5460 /** @return Current total drag x change in frames */
5461 frameoffset_t
5462 NoteDrag::total_dx (const guint state) const
5463 {
5464         /* dx in frames */
5465         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5466
5467         /* primary note time */
5468         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5469
5470         /* new time of the primary note in session frames */
5471         frameoffset_t st = n + dx + snap_delta (state);
5472
5473         framepos_t const rp = _region->region()->position ();
5474
5475         /* prevent the note being dragged earlier than the region's position */
5476         st = max (st, rp);
5477
5478         /* possibly snap and return corresponding delta */
5479
5480         bool snap = true;
5481
5482         if (ArdourKeyboard::indicates_snap (state)) {
5483                 if (_editor->snap_mode () != SnapOff) {
5484                         snap = false;
5485                 }
5486         } else {
5487                 if (_editor->snap_mode () == SnapOff) {
5488                         snap = false;
5489                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5490                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5491                                 snap = true;
5492                         }
5493                 }
5494         }
5495
5496         frameoffset_t ret;
5497         if (snap) {
5498                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5499                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5500         } else {
5501                 ret = st - n - snap_delta (state);
5502         }
5503         return ret;
5504 }
5505
5506 /** @return Current total drag y change in note number */
5507 int8_t
5508 NoteDrag::total_dy () const
5509 {
5510         MidiStreamView* msv = _region->midi_stream_view ();
5511         double const y = _region->midi_view()->y_position ();
5512         /* new current note */
5513         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5514         /* clamp */
5515         n = max (msv->lowest_note(), n);
5516         n = min (msv->highest_note(), n);
5517         /* and work out delta */
5518         return n - msv->y_to_note (grab_y() - y);
5519 }
5520
5521 void
5522 NoteDrag::motion (GdkEvent * event, bool)
5523 {
5524         /* Total change in x and y since the start of the drag */
5525         frameoffset_t const dx = total_dx (event->button.state);
5526         int8_t const dy = total_dy ();
5527
5528         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5529         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5530         double const tdy = -dy * _note_height - _cumulative_dy;
5531
5532         if (tdx || tdy) {
5533                 _cumulative_dx += tdx;
5534                 _cumulative_dy += tdy;
5535
5536                 int8_t note_delta = total_dy();
5537
5538                 _region->move_selection (tdx, tdy, note_delta);
5539
5540                 /* the new note value may be the same as the old one, but we
5541                  * don't know what that means because the selection may have
5542                  * involved more than one note and we might be doing something
5543                  * odd with them. so show the note value anyway, always.
5544                  */
5545
5546                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5547
5548                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5549         }
5550 }
5551
5552 void
5553 NoteDrag::finished (GdkEvent* ev, bool moved)
5554 {
5555         if (!moved) {
5556                 /* no motion - select note */
5557
5558                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5559                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5560
5561                         bool changed = false;
5562
5563                         if (_was_selected) {
5564                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5565                                 if (add) {
5566                                         _region->note_deselected (_primary);
5567                                         changed = true;
5568                                 } else {
5569                                         _editor->get_selection().clear_points();
5570                                         _region->unique_select (_primary);
5571                                         changed = true;
5572                                 }
5573                         } else {
5574                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5575                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5576
5577                                 if (!extend && !add && _region->selection_size() > 1) {
5578                                         _editor->get_selection().clear_points();
5579                                         _region->unique_select (_primary);
5580                                         changed = true;
5581                                 } else if (extend) {
5582                                         _region->note_selected (_primary, true, true);
5583                                         changed = true;
5584                                 } else {
5585                                         /* it was added during button press */
5586                                         changed = true;
5587
5588                                 }
5589                         }
5590
5591                         if (changed) {
5592                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5593                                 _editor->commit_reversible_selection_op();
5594                         }
5595                 }
5596         } else {
5597                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5598         }
5599 }
5600
5601 void
5602 NoteDrag::aborted (bool)
5603 {
5604         /* XXX: TODO */
5605 }
5606
5607 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5608 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5609         : Drag (editor, atv->base_item ())
5610         , _ranges (r)
5611         , _y_origin (atv->y_position())
5612         , _nothing_to_drag (false)
5613 {
5614         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5615         setup (atv->lines ());
5616 }
5617
5618 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5619 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5620         : Drag (editor, rv->get_canvas_group ())
5621         , _ranges (r)
5622         , _y_origin (rv->get_time_axis_view().y_position())
5623         , _nothing_to_drag (false)
5624         , _integral (false)
5625 {
5626         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5627
5628         list<boost::shared_ptr<AutomationLine> > lines;
5629
5630         AudioRegionView*      audio_view;
5631         AutomationRegionView* automation_view;
5632         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5633                 lines.push_back (audio_view->get_gain_line ());
5634         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5635                 lines.push_back (automation_view->line ());
5636                 _integral = true;
5637         } else {
5638                 error << _("Automation range drag created for invalid region type") << endmsg;
5639         }
5640
5641         setup (lines);
5642 }
5643
5644 /** @param lines AutomationLines to drag.
5645  *  @param offset Offset from the session start to the points in the AutomationLines.
5646  */
5647 void
5648 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5649 {
5650         /* find the lines that overlap the ranges being dragged */
5651         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5652         while (i != lines.end ()) {
5653                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5654                 ++j;
5655
5656                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5657
5658                 /* check this range against all the AudioRanges that we are using */
5659                 list<AudioRange>::const_iterator k = _ranges.begin ();
5660                 while (k != _ranges.end()) {
5661                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5662                                 break;
5663                         }
5664                         ++k;
5665                 }
5666
5667                 /* add it to our list if it overlaps at all */
5668                 if (k != _ranges.end()) {
5669                         Line n;
5670                         n.line = *i;
5671                         n.state = 0;
5672                         n.range = r;
5673                         _lines.push_back (n);
5674                 }
5675
5676                 i = j;
5677         }
5678
5679         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5680 }
5681
5682 double
5683 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5684 {
5685         return 1.0 - ((global_y - _y_origin) / line->height());
5686 }
5687
5688 double
5689 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5690 {
5691         const double v = list->eval(x);
5692         return _integral ? rint(v) : v;
5693 }
5694
5695 void
5696 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5697 {
5698         Drag::start_grab (event, cursor);
5699
5700         /* Get line states before we start changing things */
5701         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5702                 i->state = &i->line->get_state ();
5703                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5704         }
5705
5706         if (_ranges.empty()) {
5707
5708                 /* No selected time ranges: drag all points */
5709                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5710                         uint32_t const N = i->line->npoints ();
5711                         for (uint32_t j = 0; j < N; ++j) {
5712                                 i->points.push_back (i->line->nth (j));
5713                         }
5714                 }
5715
5716         }
5717
5718         if (_nothing_to_drag) {
5719                 return;
5720         }
5721 }
5722
5723 void
5724 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5725 {
5726         if (_nothing_to_drag && !first_move) {
5727                 return;
5728         }
5729
5730         if (first_move) {
5731                 _editor->begin_reversible_command (_("automation range move"));
5732
5733                 if (!_ranges.empty()) {
5734
5735                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5736
5737                                 framecnt_t const half = (i->start + i->end) / 2;
5738
5739                                 /* find the line that this audio range starts in */
5740                                 list<Line>::iterator j = _lines.begin();
5741                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5742                                         ++j;
5743                                 }
5744
5745                                 if (j != _lines.end()) {
5746                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5747
5748                                 /* j is the line that this audio range starts in; fade into it;
5749                                    64 samples length plucked out of thin air.
5750                                 */
5751
5752                                         framepos_t a = i->start + 64;
5753                                         if (a > half) {
5754                                                 a = half;
5755                                         }
5756
5757                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5758                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5759
5760                                         XMLNode &before = the_list->get_state();
5761                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5762                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5763
5764                                         if (add_p || add_q) {
5765                                                 _editor->session()->add_command (
5766                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5767                                         }
5768                                 }
5769
5770                                 /* same thing for the end */
5771
5772                                 j = _lines.begin();
5773                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5774                                         ++j;
5775                                 }
5776
5777                                 if (j != _lines.end()) {
5778                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5779
5780                                         /* j is the line that this audio range starts in; fade out of it;
5781                                            64 samples length plucked out of thin air.
5782                                         */
5783
5784                                         framepos_t b = i->end - 64;
5785                                         if (b < half) {
5786                                                 b = half;
5787                                         }
5788
5789                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5790                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5791
5792                                         XMLNode &before = the_list->get_state();
5793                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5794                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5795
5796                                         if (add_p || add_q) {
5797                                                 _editor->session()->add_command (
5798                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5799                                         }
5800                                 }
5801                         }
5802
5803                         _nothing_to_drag = true;
5804
5805                         /* Find all the points that should be dragged and put them in the relevant
5806                            points lists in the Line structs.
5807                         */
5808
5809                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5810
5811                                 uint32_t const N = i->line->npoints ();
5812                                 for (uint32_t j = 0; j < N; ++j) {
5813
5814                                         /* here's a control point on this line */
5815                                         ControlPoint* p = i->line->nth (j);
5816                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5817
5818                                         /* see if it's inside a range */
5819                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5820                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5821                                                 ++k;
5822                                         }
5823
5824                                         if (k != _ranges.end()) {
5825                                                 /* dragging this point */
5826                                                 _nothing_to_drag = false;
5827                                                 i->points.push_back (p);
5828                                         }
5829                                 }
5830                         }
5831                 }
5832
5833                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5834                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5835                 }
5836         }
5837
5838         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5839                 float const f = y_fraction (l->line, current_pointer_y());
5840                 /* we are ignoring x position for this drag, so we can just pass in anything */
5841                 pair<double, float> result;
5842                 uint32_t ignored;
5843                 result = l->line->drag_motion (0, f, true, false, ignored);
5844                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5845         }
5846 }
5847
5848 void
5849 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5850 {
5851         if (_nothing_to_drag || !motion_occurred) {
5852                 return;
5853         }
5854
5855         motion (event, false);
5856         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5857                 i->line->end_drag (false, 0);
5858         }
5859
5860         _editor->commit_reversible_command ();
5861 }
5862
5863 void
5864 AutomationRangeDrag::aborted (bool)
5865 {
5866         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5867                 i->line->reset ();
5868         }
5869 }
5870
5871 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5872         : view (v)
5873         , initial_time_axis_view (itav)
5874 {
5875         /* note that time_axis_view may be null if the regionview was created
5876          * as part of a copy operation.
5877          */
5878         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5879         layer = v->region()->layer ();
5880         initial_y = v->get_canvas_group()->position().y;
5881         initial_playlist = v->region()->playlist ();
5882         initial_position = v->region()->position ();
5883         initial_end = v->region()->position () + v->region()->length ();
5884 }
5885
5886 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5887         : Drag (e, i->canvas_item ())
5888         , _region_view (r)
5889         , _patch_change (i)
5890         , _cumulative_dx (0)
5891 {
5892         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5893                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5894                                                    grab_frame()));
5895 }
5896
5897 void
5898 PatchChangeDrag::motion (GdkEvent* ev, bool)
5899 {
5900         framepos_t f = adjusted_current_frame (ev);
5901         boost::shared_ptr<Region> r = _region_view->region ();
5902         f = max (f, r->position ());
5903         f = min (f, r->last_frame ());
5904
5905         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5906         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5907         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5908         _cumulative_dx = dxu;
5909 }
5910
5911 void
5912 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5913 {
5914         if (!movement_occurred) {
5915                 return;
5916         }
5917
5918         boost::shared_ptr<Region> r (_region_view->region ());
5919         framepos_t f = adjusted_current_frame (ev);
5920         f = max (f, r->position ());
5921         f = min (f, r->last_frame ());
5922
5923         _region_view->move_patch_change (
5924                 *_patch_change,
5925                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5926                 );
5927 }
5928
5929 void
5930 PatchChangeDrag::aborted (bool)
5931 {
5932         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5933 }
5934
5935 void
5936 PatchChangeDrag::setup_pointer_frame_offset ()
5937 {
5938         boost::shared_ptr<Region> region = _region_view->region ();
5939         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5940 }
5941
5942 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5943         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5944         , _region_view (rv)
5945 {
5946
5947 }
5948
5949 void
5950 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5951 {
5952         _region_view->update_drag_selection (
5953                 x1, x2, y1, y2,
5954                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5955 }
5956
5957 void
5958 MidiRubberbandSelectDrag::deselect_things ()
5959 {
5960         /* XXX */
5961 }
5962
5963 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5964         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5965         , _region_view (rv)
5966 {
5967         _vertical_only = true;
5968 }
5969
5970 void
5971 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5972 {
5973         double const y = _region_view->midi_view()->y_position ();
5974
5975         y1 = max (0.0, y1 - y);
5976         y2 = max (0.0, y2 - y);
5977
5978         _region_view->update_vertical_drag_selection (
5979                 y1,
5980                 y2,
5981                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5982                 );
5983 }
5984
5985 void
5986 MidiVerticalSelectDrag::deselect_things ()
5987 {
5988         /* XXX */
5989 }
5990
5991 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5992         : RubberbandSelectDrag (e, i)
5993 {
5994
5995 }
5996
5997 void
5998 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5999 {
6000         if (drag_in_progress) {
6001                 /* We just want to select things at the end of the drag, not during it */
6002                 return;
6003         }
6004
6005         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6006
6007         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6008
6009         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6010
6011         _editor->commit_reversible_selection_op ();
6012 }
6013
6014 void
6015 EditorRubberbandSelectDrag::deselect_things ()
6016 {
6017         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6018
6019         _editor->selection->clear_tracks();
6020         _editor->selection->clear_regions();
6021         _editor->selection->clear_points ();
6022         _editor->selection->clear_lines ();
6023         _editor->selection->clear_midi_notes ();
6024
6025         _editor->commit_reversible_selection_op();
6026 }
6027
6028 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6029         : Drag (e, i)
6030         , _region_view (rv)
6031         , _drag_rect (0)
6032 {
6033         _note[0] = _note[1] = 0;
6034 }
6035
6036 NoteCreateDrag::~NoteCreateDrag ()
6037 {
6038         delete _drag_rect;
6039 }
6040
6041 framecnt_t
6042 NoteCreateDrag::grid_frames (framepos_t t) const
6043 {
6044         bool success;
6045         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6046         if (!success) {
6047                 grid_beats = Evoral::Beats(1);
6048         }
6049
6050         return _region_view->region_beats_to_region_frames (grid_beats);
6051 }
6052
6053 void
6054 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6055 {
6056         Drag::start_grab (event, cursor);
6057
6058         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6059
6060         framepos_t pf = _drags->current_pointer_frame ();
6061         framecnt_t const g = grid_frames (pf);
6062
6063         /* Hack so that we always snap to the note that we are over, instead of snapping
6064            to the next one if we're more than halfway through the one we're over.
6065         */
6066         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6067                 pf -= g / 2;
6068         }
6069
6070         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6071         _note[1] = _note[0];
6072
6073         MidiStreamView* sv = _region_view->midi_stream_view ();
6074         double const x = _editor->sample_to_pixel (_note[0]);
6075         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6076
6077         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6078         _drag_rect->set_outline_all ();
6079         _drag_rect->set_outline_color (0xffffff99);
6080         _drag_rect->set_fill_color (0xffffff66);
6081 }
6082
6083 void
6084 NoteCreateDrag::motion (GdkEvent* event, bool)
6085 {
6086         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6087         double const x0 = _editor->sample_to_pixel (_note[0]);
6088         double const x1 = _editor->sample_to_pixel (_note[1]);
6089         _drag_rect->set_x0 (std::min(x0, x1));
6090         _drag_rect->set_x1 (std::max(x0, x1));
6091 }
6092
6093 void
6094 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6095 {
6096         if (!had_movement) {
6097                 return;
6098         }
6099
6100         framepos_t const start = min (_note[0], _note[1]);
6101         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6102
6103         framecnt_t const g = grid_frames (start);
6104         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6105
6106         if (_editor->snap_mode() == SnapNormal && length < g) {
6107                 length = g;
6108         }
6109
6110         Evoral::Beats length_beats = max (
6111                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6112
6113         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6114 }
6115
6116 double
6117 NoteCreateDrag::y_to_region (double y) const
6118 {
6119         double x = 0;
6120         _region_view->get_canvas_group()->canvas_to_item (x, y);
6121         return y;
6122 }
6123
6124 void
6125 NoteCreateDrag::aborted (bool)
6126 {
6127
6128 }
6129
6130 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6131         : Drag (e, i)
6132         , arv (rv)
6133         , start (start_yn)
6134 {
6135         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6136 }
6137
6138 void
6139 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6140 {
6141         Drag::start_grab (event, cursor);
6142 }
6143
6144 void
6145 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6146 {
6147         double distance;
6148         double new_length;
6149         framecnt_t len;
6150
6151         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6152
6153         if (start) {
6154                 distance = _drags->current_pointer_x() - grab_x();
6155                 len = ar->fade_in()->back()->when;
6156         } else {
6157                 distance = grab_x() - _drags->current_pointer_x();
6158                 len = ar->fade_out()->back()->when;
6159         }
6160
6161         /* how long should it be ? */
6162
6163         new_length = len + _editor->pixel_to_sample (distance);
6164
6165         /* now check with the region that this is legal */
6166
6167         new_length = ar->verify_xfade_bounds (new_length, start);
6168
6169         if (start) {
6170                 arv->reset_fade_in_shape_width (ar, new_length);
6171         } else {
6172                 arv->reset_fade_out_shape_width (ar, new_length);
6173         }
6174 }
6175
6176 void
6177 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6178 {
6179         double distance;
6180         double new_length;
6181         framecnt_t len;
6182
6183         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6184
6185         if (start) {
6186                 distance = _drags->current_pointer_x() - grab_x();
6187                 len = ar->fade_in()->back()->when;
6188         } else {
6189                 distance = grab_x() - _drags->current_pointer_x();
6190                 len = ar->fade_out()->back()->when;
6191         }
6192
6193         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6194
6195         _editor->begin_reversible_command ("xfade trim");
6196         ar->playlist()->clear_owned_changes ();
6197
6198         if (start) {
6199                 ar->set_fade_in_length (new_length);
6200         } else {
6201                 ar->set_fade_out_length (new_length);
6202         }
6203
6204         /* Adjusting the xfade may affect other regions in the playlist, so we need
6205            to get undo Commands from the whole playlist rather than just the
6206            region.
6207         */
6208
6209         vector<Command*> cmds;
6210         ar->playlist()->rdiff (cmds);
6211         _editor->session()->add_commands (cmds);
6212         _editor->commit_reversible_command ();
6213
6214 }
6215
6216 void
6217 CrossfadeEdgeDrag::aborted (bool)
6218 {
6219         if (start) {
6220                 // arv->redraw_start_xfade ();
6221         } else {
6222                 // arv->redraw_end_xfade ();
6223         }
6224 }
6225
6226 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6227         : Drag (e, item, true)
6228         , line (new EditorCursor (*e))
6229 {
6230         line->set_position (pos);
6231         line->show ();
6232 }
6233
6234 RegionCutDrag::~RegionCutDrag ()
6235 {
6236         delete line;
6237 }
6238
6239 void
6240 RegionCutDrag::motion (GdkEvent*, bool)
6241 {
6242         framepos_t where = _drags->current_pointer_frame();
6243         _editor->snap_to (where);
6244
6245         line->set_position (where);
6246 }
6247
6248 void
6249 RegionCutDrag::finished (GdkEvent*, bool)
6250 {
6251         _editor->get_track_canvas()->canvas()->re_enter();
6252
6253         framepos_t pos = _drags->current_pointer_frame();
6254
6255         line->hide ();
6256
6257         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6258
6259         if (rs.empty()) {
6260                 return;
6261         }
6262
6263         _editor->split_regions_at (pos, rs);
6264 }
6265
6266 void
6267 RegionCutDrag::aborted (bool)
6268 {
6269 }