gtk2_ardour/editor_drag.cc

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