gtk2_ardour/editor_drag.cc

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