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         show_verbose_cursor_time (adjusted_current_frame (event));
3266 }
3267
3268 void
3269 TempoMarkerDrag::setup_pointer_frame_offset ()
3270 {
3271         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3272 }
3273
3274 void
3275 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3276 {
3277         if (first_move) {
3278
3279                 // create a dummy marker for visual representation of moving the
3280                 // section, because whether its a copy or not, we're going to
3281                 // leave or lose the original marker (leave if its a copy; lose if its
3282                 // not, because we'll remove it from the map).
3283
3284                 // create a dummy marker for visual representation of moving the copy.
3285                 // The actual copying is not done before we reach the finish callback.
3286
3287                 char name[64];
3288                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3289
3290                 TempoSection section (_marker->tempo());
3291
3292                 _marker = new TempoMarker (
3293                         *_editor,
3294                         *_editor->tempo_group,
3295                         UIConfiguration::instance().color ("tempo marker"),
3296                         name,
3297                         *new TempoSection (_marker->tempo())
3298                         );
3299
3300                 /* use the new marker for the grab */
3301                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3302
3303                 if (!_copy) {
3304                         _editor->begin_reversible_command (_("move tempo mark"));
3305                         TempoMap& map (_editor->session()->tempo_map());
3306                         /* get current state */
3307                         before_state = &map.get_state();
3308                 }
3309                 _marker->hide();
3310         }
3311
3312         framepos_t const pf = adjusted_current_frame (event);
3313         Tempo const tp = _marker->tempo();
3314
3315         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3316                 //_marker->set_position (pf);
3317                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3318                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3319         } else if (_movable) {
3320
3321                 _marker->set_position (pf);
3322                 /* just here for a check/laugh
3323                    if (_real_section->position_lock_style() == MusicTime) {
3324                    const double baf = _editor->session()->tempo_map().beat_at_frame (pf);
3325                    _editor->session()->tempo_map().gui_move_tempo_beat (_real_section, tp, baf);
3326                    } else {
3327                 */
3328                 _editor->session()->tempo_map().gui_move_tempo_frame (_real_section, tp, pf);
3329                 //}
3330         }
3331
3332         show_verbose_cursor_time (pf);
3333 }
3334
3335 void
3336 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3337 {
3338         if (!movement_occurred) {
3339                 if (was_double_click()) {
3340                         _editor->edit_tempo_marker (*_marker);
3341                 }
3342                 return;
3343         }
3344
3345         //motion (event, false);
3346
3347         TempoMap& map (_editor->session()->tempo_map());
3348
3349         if (_copy == true) {
3350                 _editor->begin_reversible_command (_("copy tempo mark"));
3351                 XMLNode &before = map.get_state();
3352
3353                 if (_marker->tempo().position_lock_style() == MusicTime) {
3354                         double const pulse = map.predict_tempo_pulse (_real_section, _marker->tempo(), _real_section->frame());
3355                         map.add_tempo (_marker->tempo(), pulse, _marker->tempo().type());
3356                 } else {
3357                         map.add_tempo (_marker->tempo(), _real_section->frame(), _marker->tempo().type());
3358                 }
3359
3360                 XMLNode &after = map.get_state();
3361                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
3362                 _editor->commit_reversible_command ();
3363
3364         } else {
3365                 if (_marker->tempo().position_lock_style() == MusicTime) {
3366                         double const pulse = map.predict_tempo_pulse (_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type()), _real_section->frame());
3367                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3368                                            , pulse, _marker->tempo().type());
3369                 } else {
3370                         map.replace_tempo (*_real_section, Tempo (_real_section->beats_per_minute(), _real_section->note_type())
3371                                            , _real_section->frame(), _marker->tempo().type());
3372                 }
3373
3374                 XMLNode &after = map.get_state();
3375                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3376                 _editor->commit_reversible_command ();
3377         }
3378
3379         // delete the dummy marker we used for visual representation while moving.
3380         // a new visual marker will show up automatically.
3381         delete _marker;
3382 }
3383
3384 void
3385 TempoMarkerDrag::aborted (bool moved)
3386 {
3387         _marker->set_position (_marker->tempo().frame());
3388         if (moved) {
3389                 TempoMap& map (_editor->session()->tempo_map());
3390                 /* we removed it before, so add it back now */
3391                 if (_marker->tempo().position_lock_style() == MusicTime) {
3392                         map.add_tempo (_marker->tempo(), _marker->tempo().pulse(), _marker->tempo().type());
3393                 } else {
3394                         map.add_tempo (_marker->tempo(), _marker->tempo().frame(), _marker->tempo().type());
3395                 }
3396                 // delete the dummy marker we used for visual representation while moving.
3397                 // a new visual marker will show up automatically.
3398                 delete _marker;
3399         }
3400 }
3401
3402 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3403         : Drag (e, &c.track_canvas_item(), false)
3404         , _cursor (c)
3405         , _stop (s)
3406         , _grab_zoom (0.0)
3407 {
3408         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3409 }
3410
3411 /** Do all the things we do when dragging the playhead to make it look as though
3412  *  we have located, without actually doing the locate (because that would cause
3413  *  the diskstream buffers to be refilled, which is too slow).
3414  */
3415 void
3416 CursorDrag::fake_locate (framepos_t t)
3417 {
3418         if (_editor->session () == 0) {
3419                 return;
3420         }
3421
3422         _editor->playhead_cursor->set_position (t);
3423
3424         Session* s = _editor->session ();
3425         if (s->timecode_transmission_suspended ()) {
3426                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3427                 /* This is asynchronous so it will be sent "now"
3428                  */
3429                 s->send_mmc_locate (f);
3430                 /* These are synchronous and will be sent during the next
3431                    process cycle
3432                 */
3433                 s->queue_full_time_code ();
3434                 s->queue_song_position_pointer ();
3435         }
3436
3437         show_verbose_cursor_time (t);
3438         _editor->UpdateAllTransportClocks (t);
3439 }
3440
3441 void
3442 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3443 {
3444         Drag::start_grab (event, c);
3445         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3446
3447         _grab_zoom = _editor->samples_per_pixel;
3448
3449         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3450
3451         _editor->snap_to_with_modifier (where, event);
3452
3453         _editor->_dragging_playhead = true;
3454
3455         Session* s = _editor->session ();
3456
3457         /* grab the track canvas item as well */
3458
3459         _cursor.track_canvas_item().grab();
3460
3461         if (s) {
3462                 if (_was_rolling && _stop) {
3463                         s->request_stop ();
3464                 }
3465
3466                 if (s->is_auditioning()) {
3467                         s->cancel_audition ();
3468                 }
3469
3470
3471                 if (AudioEngine::instance()->connected()) {
3472
3473                         /* do this only if we're the engine is connected
3474                          * because otherwise this request will never be
3475                          * serviced and we'll busy wait forever. likewise,
3476                          * notice if we are disconnected while waiting for the
3477                          * request to be serviced.
3478                          */
3479
3480                         s->request_suspend_timecode_transmission ();
3481                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3482                                 /* twiddle our thumbs */
3483                         }
3484                 }
3485         }
3486
3487         fake_locate (where - snap_delta (event->button.state));
3488 }
3489
3490 void
3491 CursorDrag::motion (GdkEvent* event, bool)
3492 {
3493         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3494         _editor->snap_to_with_modifier (where, event);
3495         if (where != last_pointer_frame()) {
3496                 fake_locate (where - snap_delta (event->button.state));
3497         }
3498 }
3499
3500 void
3501 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3502 {
3503         _editor->_dragging_playhead = false;
3504
3505         _cursor.track_canvas_item().ungrab();
3506
3507         if (!movement_occurred && _stop) {
3508                 return;
3509         }
3510
3511         motion (event, false);
3512
3513         Session* s = _editor->session ();
3514         if (s) {
3515                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3516                 _editor->_pending_locate_request = true;
3517                 s->request_resume_timecode_transmission ();
3518         }
3519 }
3520
3521 void
3522 CursorDrag::aborted (bool)
3523 {
3524         _cursor.track_canvas_item().ungrab();
3525
3526         if (_editor->_dragging_playhead) {
3527                 _editor->session()->request_resume_timecode_transmission ();
3528                 _editor->_dragging_playhead = false;
3529         }
3530
3531         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3532 }
3533
3534 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3535         : RegionDrag (e, i, p, v)
3536 {
3537         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3538 }
3539
3540 void
3541 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3542 {
3543         Drag::start_grab (event, cursor);
3544
3545         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3546         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3547         setup_snap_delta (r->position ());
3548
3549         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3550 }
3551
3552 void
3553 FadeInDrag::setup_pointer_frame_offset ()
3554 {
3555         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3556         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3557         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3558 }
3559
3560 void
3561 FadeInDrag::motion (GdkEvent* event, bool)
3562 {
3563         framecnt_t fade_length;
3564
3565         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3566         _editor->snap_to_with_modifier (pos, event);
3567         pos -= snap_delta (event->button.state);
3568
3569         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3570
3571         if (pos < (region->position() + 64)) {
3572                 fade_length = 64; // this should be a minimum defined somewhere
3573         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3574                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3575         } else {
3576                 fade_length = pos - region->position();
3577         }
3578
3579         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3580
3581                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3582
3583                 if (!tmp) {
3584                         continue;
3585                 }
3586
3587                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3588         }
3589
3590         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3591 }
3592
3593 void
3594 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3595 {
3596         if (!movement_occurred) {
3597                 return;
3598         }
3599
3600         framecnt_t fade_length;
3601         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3602         _editor->snap_to_with_modifier (pos, event);
3603         pos -= snap_delta (event->button.state);
3604
3605         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3606
3607         if (pos < (region->position() + 64)) {
3608                 fade_length = 64; // this should be a minimum defined somewhere
3609         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3610                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3611         } else {
3612                 fade_length = pos - region->position();
3613         }
3614
3615         bool in_command = false;
3616
3617         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3618
3619                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3620
3621                 if (!tmp) {
3622                         continue;
3623                 }
3624
3625                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3626                 XMLNode &before = alist->get_state();
3627
3628                 tmp->audio_region()->set_fade_in_length (fade_length);
3629                 tmp->audio_region()->set_fade_in_active (true);
3630
3631                 if (!in_command) {
3632                         _editor->begin_reversible_command (_("change fade in length"));
3633                         in_command = true;
3634                 }
3635                 XMLNode &after = alist->get_state();
3636                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3637         }
3638
3639         if (in_command) {
3640                 _editor->commit_reversible_command ();
3641         }
3642 }
3643
3644 void
3645 FadeInDrag::aborted (bool)
3646 {
3647         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3648                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3649
3650                 if (!tmp) {
3651                         continue;
3652                 }
3653
3654                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3655         }
3656 }
3657
3658 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3659         : RegionDrag (e, i, p, v)
3660 {
3661         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3662 }
3663
3664 void
3665 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3666 {
3667         Drag::start_grab (event, cursor);
3668
3669         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3670         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3671         setup_snap_delta (r->last_frame ());
3672
3673         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3674 }
3675
3676 void
3677 FadeOutDrag::setup_pointer_frame_offset ()
3678 {
3679         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3680         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3681         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3682 }
3683
3684 void
3685 FadeOutDrag::motion (GdkEvent* event, bool)
3686 {
3687         framecnt_t fade_length;
3688
3689         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3690         _editor->snap_to_with_modifier (pos, event);
3691         pos -= snap_delta (event->button.state);
3692
3693         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3694
3695         if (pos > (region->last_frame() - 64)) {
3696                 fade_length = 64; // this should really be a minimum fade defined somewhere
3697         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3698                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3699         } else {
3700                 fade_length = region->last_frame() - pos;
3701         }
3702
3703         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3704
3705                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3706
3707                 if (!tmp) {
3708                         continue;
3709                 }
3710
3711                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3712         }
3713
3714         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3715 }
3716
3717 void
3718 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3719 {
3720         if (!movement_occurred) {
3721                 return;
3722         }
3723
3724         framecnt_t fade_length;
3725
3726         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3727         _editor->snap_to_with_modifier (pos, event);
3728         pos -= snap_delta (event->button.state);
3729
3730         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3731
3732         if (pos > (region->last_frame() - 64)) {
3733                 fade_length = 64; // this should really be a minimum fade defined somewhere
3734         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3735                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3736         } else {
3737                 fade_length = region->last_frame() - pos;
3738         }
3739
3740         bool in_command = false;
3741
3742         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3743
3744                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3745
3746                 if (!tmp) {
3747                         continue;
3748                 }
3749
3750                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3751                 XMLNode &before = alist->get_state();
3752
3753                 tmp->audio_region()->set_fade_out_length (fade_length);
3754                 tmp->audio_region()->set_fade_out_active (true);
3755
3756                 if (!in_command) {
3757                         _editor->begin_reversible_command (_("change fade out length"));
3758                         in_command = true;
3759                 }
3760                 XMLNode &after = alist->get_state();
3761                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3762         }
3763
3764         if (in_command) {
3765                 _editor->commit_reversible_command ();
3766         }
3767 }
3768
3769 void
3770 FadeOutDrag::aborted (bool)
3771 {
3772         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3773                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3774
3775                 if (!tmp) {
3776                         continue;
3777                 }
3778
3779                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3780         }
3781 }
3782
3783 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3784         : Drag (e, i)
3785         , _selection_changed (false)
3786 {
3787         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3788         Gtk::Window* toplevel = _editor->current_toplevel();
3789         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3790
3791         assert (_marker);
3792
3793         _points.push_back (ArdourCanvas::Duple (0, 0));
3794
3795         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3796 }
3797
3798 MarkerDrag::~MarkerDrag ()
3799 {
3800         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3801                 delete i->location;
3802         }
3803 }
3804
3805 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3806 {
3807         location = new Location (*l);
3808         markers.push_back (m);
3809         move_both = false;
3810 }
3811
3812 void
3813 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3814 {
3815         Drag::start_grab (event, cursor);
3816
3817         bool is_start;
3818
3819         Location *location = _editor->find_location_from_marker (_marker, is_start);
3820         _editor->_dragging_edit_point = true;
3821
3822         update_item (location);
3823
3824         // _drag_line->show();
3825         // _line->raise_to_top();
3826
3827         if (is_start) {
3828                 show_verbose_cursor_time (location->start());
3829         } else {
3830                 show_verbose_cursor_time (location->end());
3831         }
3832         setup_snap_delta (is_start ? location->start() : location->end());
3833
3834         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3835
3836         switch (op) {
3837         case Selection::Toggle:
3838                 /* we toggle on the button release */
3839                 break;
3840         case Selection::Set:
3841                 if (!_editor->selection->selected (_marker)) {
3842                         _editor->selection->set (_marker);
3843                         _selection_changed = true;
3844                 }
3845                 break;
3846         case Selection::Extend:
3847         {
3848                 Locations::LocationList ll;
3849                 list<ArdourMarker*> to_add;
3850                 framepos_t s, e;
3851                 _editor->selection->markers.range (s, e);
3852                 s = min (_marker->position(), s);
3853                 e = max (_marker->position(), e);
3854                 s = min (s, e);
3855                 e = max (s, e);
3856                 if (e < max_framepos) {
3857                         ++e;
3858                 }
3859                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3860                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3861                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3862                         if (lm) {
3863                                 if (lm->start) {
3864                                         to_add.push_back (lm->start);
3865                                 }
3866                                 if (lm->end) {
3867                                         to_add.push_back (lm->end);
3868                                 }
3869                         }
3870                 }
3871                 if (!to_add.empty()) {
3872                         _editor->selection->add (to_add);
3873                         _selection_changed = true;
3874                 }
3875                 break;
3876         }
3877         case Selection::Add:
3878                 _editor->selection->add (_marker);
3879                 _selection_changed = true;
3880
3881                 break;
3882         }
3883
3884         /* Set up copies for us to manipulate during the drag
3885          */
3886
3887         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3888
3889                 Location* l = _editor->find_location_from_marker (*i, is_start);
3890
3891                 if (!l) {
3892                         continue;
3893                 }
3894
3895                 if (l->is_mark()) {
3896                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3897                 } else {
3898                         /* range: check that the other end of the range isn't
3899                            already there.
3900                         */
3901                         CopiedLocationInfo::iterator x;
3902                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3903                                 if (*(*x).location == *l) {
3904                                         break;
3905                                 }
3906                         }
3907                         if (x == _copied_locations.end()) {
3908                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3909                         } else {
3910                                 (*x).markers.push_back (*i);
3911                                 (*x).move_both = true;
3912                         }
3913                 }
3914
3915         }
3916 }
3917
3918 void
3919 MarkerDrag::setup_pointer_frame_offset ()
3920 {
3921         bool is_start;
3922         Location *location = _editor->find_location_from_marker (_marker, is_start);
3923         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3924 }
3925
3926 void
3927 MarkerDrag::motion (GdkEvent* event, bool)
3928 {
3929         framecnt_t f_delta = 0;
3930         bool is_start;
3931         bool move_both = false;
3932         Location *real_location;
3933         Location *copy_location = 0;
3934         framecnt_t const sd = snap_delta (event->button.state);
3935
3936         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
3937         framepos_t next = newframe;
3938
3939         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
3940                 move_both = true;
3941         }
3942
3943         CopiedLocationInfo::iterator x;
3944
3945         /* find the marker we're dragging, and compute the delta */
3946
3947         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3948
3949                 copy_location = (*x).location;
3950
3951                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
3952
3953                         /* this marker is represented by this
3954                          * CopiedLocationMarkerInfo
3955                          */
3956
3957                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
3958                                 /* que pasa ?? */
3959                                 return;
3960                         }
3961
3962                         if (real_location->is_mark()) {
3963                                 f_delta = newframe - copy_location->start();
3964                         } else {
3965
3966
3967                                 switch (_marker->type()) {
3968                                 case ArdourMarker::SessionStart:
3969                                 case ArdourMarker::RangeStart:
3970                                 case ArdourMarker::LoopStart:
3971                                 case ArdourMarker::PunchIn:
3972                                         f_delta = newframe - copy_location->start();
3973                                         break;
3974
3975                                 case ArdourMarker::SessionEnd:
3976                                 case ArdourMarker::RangeEnd:
3977                                 case ArdourMarker::LoopEnd:
3978                                 case ArdourMarker::PunchOut:
3979                                         f_delta = newframe - copy_location->end();
3980                                         break;
3981                                 default:
3982                                         /* what kind of marker is this ? */
3983                                         return;
3984                                 }
3985                         }
3986
3987                         break;
3988                 }
3989         }
3990
3991         if (x == _copied_locations.end()) {
3992                 /* hmm, impossible - we didn't find the dragged marker */
3993                 return;
3994         }
3995
3996         /* now move them all */
3997
3998         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3999
4000                 copy_location = x->location;
4001
4002                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4003                         continue;
4004                 }
4005
4006                 if (real_location->locked()) {
4007                         continue;
4008                 }
4009
4010                 if (copy_location->is_mark()) {
4011
4012                         /* now move it */
4013
4014                         copy_location->set_start (copy_location->start() + f_delta);
4015
4016                 } else {
4017
4018                         framepos_t new_start = copy_location->start() + f_delta;
4019                         framepos_t new_end = copy_location->end() + f_delta;
4020
4021                         if (is_start) { // start-of-range marker
4022
4023                                 if (move_both || (*x).move_both) {
4024                                         copy_location->set_start (new_start);
4025                                         copy_location->set_end (new_end);
4026                                 } else  if (new_start < copy_location->end()) {
4027                                         copy_location->set_start (new_start);
4028                                 } else if (newframe > 0) {
4029                                         //_editor->snap_to (next, RoundUpAlways, true);
4030                                         copy_location->set_end (next);
4031                                         copy_location->set_start (newframe);
4032                                 }
4033
4034                         } else { // end marker
4035
4036                                 if (move_both || (*x).move_both) {
4037                                         copy_location->set_end (new_end);
4038                                         copy_location->set_start (new_start);
4039                                 } else if (new_end > copy_location->start()) {
4040                                         copy_location->set_end (new_end);
4041                                 } else if (newframe > 0) {
4042                                         //_editor->snap_to (next, RoundDownAlways, true);
4043                                         copy_location->set_start (next);
4044                                         copy_location->set_end (newframe);
4045                                 }
4046                         }
4047                 }
4048
4049                 update_item (copy_location);
4050
4051                 /* now lookup the actual GUI items used to display this
4052                  * location and move them to wherever the copy of the location
4053                  * is now. This means that the logic in ARDOUR::Location is
4054                  * still enforced, even though we are not (yet) modifying
4055                  * the real Location itself.
4056                  */
4057
4058                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4059
4060                 if (lm) {
4061                         lm->set_position (copy_location->start(), copy_location->end());
4062                 }
4063
4064         }
4065
4066         assert (!_copied_locations.empty());
4067
4068         show_verbose_cursor_time (newframe);
4069 }
4070
4071 void
4072 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4073 {
4074         if (!movement_occurred) {
4075
4076                 if (was_double_click()) {
4077                         _editor->rename_marker (_marker);
4078                         return;
4079                 }
4080
4081                 /* just a click, do nothing but finish
4082                    off the selection process
4083                 */
4084
4085                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4086                 switch (op) {
4087                 case Selection::Set:
4088                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4089                                 _editor->selection->set (_marker);
4090                                 _selection_changed = true;
4091                         }
4092                         break;
4093
4094                 case Selection::Toggle:
4095                         /* we toggle on the button release, click only */
4096                         _editor->selection->toggle (_marker);
4097                         _selection_changed = true;
4098
4099                         break;
4100
4101                 case Selection::Extend:
4102                 case Selection::Add:
4103                         break;
4104                 }
4105
4106                 if (_selection_changed) {
4107                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4108                         _editor->commit_reversible_selection_op();
4109                 }
4110
4111                 return;
4112         }
4113
4114         _editor->_dragging_edit_point = false;
4115
4116         XMLNode &before = _editor->session()->locations()->get_state();
4117         bool in_command = false;
4118
4119         MarkerSelection::iterator i;
4120         CopiedLocationInfo::iterator x;
4121         bool is_start;
4122
4123         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4124              x != _copied_locations.end() && i != _editor->selection->markers.end();
4125              ++i, ++x) {
4126
4127                 Location * location = _editor->find_location_from_marker (*i, is_start);
4128
4129                 if (location) {
4130
4131                         if (location->locked()) {
4132                                 continue;
4133                         }
4134                         if (!in_command) {
4135                                 _editor->begin_reversible_command ( _("move marker") );
4136                                 in_command = true;
4137                         }
4138                         if (location->is_mark()) {
4139                                 location->set_start (((*x).location)->start());
4140                         } else {
4141                                 location->set (((*x).location)->start(), ((*x).location)->end());
4142                         }
4143                 }
4144         }
4145
4146         if (in_command) {
4147                 XMLNode &after = _editor->session()->locations()->get_state();
4148                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4149                 _editor->commit_reversible_command ();
4150         }
4151 }
4152
4153 void
4154 MarkerDrag::aborted (bool movement_occurred)
4155 {
4156         if (!movement_occurred) {
4157                 return;
4158         }
4159
4160         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4161
4162                 /* move all markers to their original location */
4163
4164
4165                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4166
4167                         bool is_start;
4168                         Location * location = _editor->find_location_from_marker (*m, is_start);
4169
4170                         if (location) {
4171                                 (*m)->set_position (is_start ? location->start() : location->end());
4172                         }
4173                 }
4174         }
4175 }
4176
4177 void
4178 MarkerDrag::update_item (Location*)
4179 {
4180         /* noop */
4181 }
4182
4183 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4184         : Drag (e, i)
4185         , _fixed_grab_x (0.0)
4186         , _fixed_grab_y (0.0)
4187         , _cumulative_x_drag (0.0)
4188         , _cumulative_y_drag (0.0)
4189         , _pushing (false)
4190         , _final_index (0)
4191 {
4192         if (_zero_gain_fraction < 0.0) {
4193                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4194         }
4195
4196         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4197
4198         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4199         assert (_point);
4200 }
4201
4202
4203 void
4204 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4205 {
4206         Drag::start_grab (event, _editor->cursors()->fader);
4207
4208         // start the grab at the center of the control point so
4209         // the point doesn't 'jump' to the mouse after the first drag
4210         _fixed_grab_x = _point->get_x();
4211         _fixed_grab_y = _point->get_y();
4212
4213         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4214         setup_snap_delta (pos);
4215
4216         float const fraction = 1 - (_point->get_y() / _point->line().height());
4217         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4218
4219         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4220
4221         if (!_point->can_slide ()) {
4222                 _x_constrained = true;
4223         }
4224 }
4225
4226 void
4227 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4228 {
4229         double dx = _drags->current_pointer_x() - last_pointer_x();
4230         double dy = current_pointer_y() - last_pointer_y();
4231         bool need_snap = true;
4232
4233         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4234                 dx *= 0.1;
4235                 dy *= 0.1;
4236                 need_snap = false;
4237         }
4238
4239         /* coordinate in pixels relative to the start of the region (for region-based automation)
4240            or track (for track-based automation) */
4241         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4242         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4243
4244         // calculate zero crossing point. back off by .01 to stay on the
4245         // positive side of zero
4246         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4247
4248         if (_x_constrained) {
4249                 cx = _fixed_grab_x;
4250         }
4251         if (_y_constrained) {
4252                 cy = _fixed_grab_y;
4253         }
4254
4255         _cumulative_x_drag = cx - _fixed_grab_x;
4256         _cumulative_y_drag = cy - _fixed_grab_y;
4257
4258         cx = max (0.0, cx);
4259         cy = max (0.0, cy);
4260         cy = min ((double) _point->line().height(), cy);
4261
4262         // make sure we hit zero when passing through
4263         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4264                 cy = zero_gain_y;
4265         }
4266
4267         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4268
4269         if (!_x_constrained && need_snap) {
4270                 _editor->snap_to_with_modifier (cx_frames, event);
4271         }
4272
4273         cx_frames -= snap_delta (event->button.state);
4274         cx_frames = min (cx_frames, _point->line().maximum_time());
4275
4276         float const fraction = 1.0 - (cy / _point->line().height());
4277
4278         if (first_motion) {
4279                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4280                 _editor->begin_reversible_command (_("automation event move"));
4281                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4282         }
4283         pair<double, float> result;
4284         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4285
4286         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4287 }
4288
4289 void
4290 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4291 {
4292         if (!movement_occurred) {
4293
4294                 /* just a click */
4295                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4296                         _editor->reset_point_selection ();
4297                 }
4298
4299         } else {
4300                 _point->line().end_drag (_pushing, _final_index);
4301                 _editor->commit_reversible_command ();
4302         }
4303 }
4304
4305 void
4306 ControlPointDrag::aborted (bool)
4307 {
4308         _point->line().reset ();
4309 }
4310
4311 bool
4312 ControlPointDrag::active (Editing::MouseMode m)
4313 {
4314         if (m == Editing::MouseDraw) {
4315                 /* always active in mouse draw */
4316                 return true;
4317         }
4318
4319         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4320         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4321 }
4322
4323 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4324         : Drag (e, i)
4325         , _line (0)
4326         , _fixed_grab_x (0.0)
4327         , _fixed_grab_y (0.0)
4328         , _cumulative_y_drag (0)
4329         , _before (0)
4330         , _after (0)
4331 {
4332         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4333 }
4334
4335 void
4336 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4337 {
4338         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4339         assert (_line);
4340
4341         _item = &_line->grab_item ();
4342
4343         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4344            origin, and ditto for y.
4345         */
4346
4347         double mx = event->button.x;
4348         double my = event->button.y;
4349
4350         _line->grab_item().canvas_to_item (mx, my);
4351
4352         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4353
4354         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4355                 /* no adjacent points */
4356                 return;
4357         }
4358
4359         Drag::start_grab (event, _editor->cursors()->fader);
4360
4361         /* store grab start in item frame */
4362         double const bx = _line->nth (_before)->get_x();
4363         double const ax = _line->nth (_after)->get_x();
4364         double const click_ratio = (ax - mx) / (ax - bx);
4365
4366         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4367
4368         _fixed_grab_x = mx;
4369         _fixed_grab_y = cy;
4370
4371         double fraction = 1.0 - (cy / _line->height());
4372
4373         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4374 }
4375
4376 void
4377 LineDrag::motion (GdkEvent* event, bool first_move)
4378 {
4379         double dy = current_pointer_y() - last_pointer_y();
4380
4381         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4382                 dy *= 0.1;
4383         }
4384
4385         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4386
4387         _cumulative_y_drag = cy - _fixed_grab_y;
4388
4389         cy = max (0.0, cy);
4390         cy = min ((double) _line->height(), cy);
4391
4392         double const fraction = 1.0 - (cy / _line->height());
4393         uint32_t ignored;
4394
4395         if (first_move) {
4396                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4397
4398                 _editor->begin_reversible_command (_("automation range move"));
4399                 _line->start_drag_line (_before, _after, initial_fraction);
4400         }
4401
4402         /* we are ignoring x position for this drag, so we can just pass in anything */
4403         pair<double, float> result;
4404
4405         result = _line->drag_motion (0, fraction, true, false, ignored);
4406         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4407 }
4408
4409 void
4410 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4411 {
4412         if (movement_occurred) {
4413                 motion (event, false);
4414                 _line->end_drag (false, 0);
4415                 _editor->commit_reversible_command ();
4416         } else {
4417                 /* add a new control point on the line */
4418
4419                 AutomationTimeAxisView* atv;
4420
4421                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4422                         framepos_t where = grab_frame ();
4423
4424                         double cx = 0;
4425                         double cy = _fixed_grab_y;
4426
4427                         _line->grab_item().item_to_canvas (cx, cy);
4428
4429                         atv->add_automation_event (event, where, cy, false);
4430                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4431                         AudioRegionView* arv;
4432
4433                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4434                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4435                         }
4436                 }
4437         }
4438 }
4439
4440 void
4441 LineDrag::aborted (bool)
4442 {
4443         _line->reset ();
4444 }
4445
4446 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4447         : Drag (e, i),
4448           _line (0),
4449           _arv (0),
4450           _region_view_grab_x (0.0),
4451           _cumulative_x_drag (0),
4452           _before (0.0),
4453           _max_x (0)
4454 {
4455         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4456 }
4457
4458 void
4459 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4460 {
4461         Drag::start_grab (event);
4462
4463         _line = reinterpret_cast<Line*> (_item);
4464         assert (_line);
4465
4466         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4467
4468         double cx = event->button.x;
4469         double cy = event->button.y;
4470
4471         _item->parent()->canvas_to_item (cx, cy);
4472
4473         /* store grab start in parent frame */
4474         _region_view_grab_x = cx;
4475
4476         _before = *(float*) _item->get_data ("position");
4477
4478         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4479
4480         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4481 }
4482
4483 void
4484 FeatureLineDrag::motion (GdkEvent*, bool)
4485 {
4486         double dx = _drags->current_pointer_x() - last_pointer_x();
4487
4488         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4489
4490         _cumulative_x_drag += dx;
4491
4492         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4493
4494         if (cx > _max_x){
4495                 cx = _max_x;
4496         }
4497         else if(cx < 0){
4498                 cx = 0;
4499         }
4500
4501         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4502         assert (bbox);
4503         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4504
4505         float *pos = new float;
4506         *pos = cx;
4507
4508         _line->set_data ("position", pos);
4509
4510         _before = cx;
4511 }
4512
4513 void
4514 FeatureLineDrag::finished (GdkEvent*, bool)
4515 {
4516         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4517         _arv->update_transient(_before, _before);
4518 }
4519
4520 void
4521 FeatureLineDrag::aborted (bool)
4522 {
4523         //_line->reset ();
4524 }
4525
4526 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4527         : Drag (e, i)
4528         , _vertical_only (false)
4529 {
4530         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4531 }
4532
4533 void
4534 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4535 {
4536         Drag::start_grab (event);
4537         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4538 }
4539
4540 void
4541 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4542 {
4543         framepos_t start;
4544         framepos_t end;
4545         double y1;
4546         double y2;
4547
4548         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4549
4550         framepos_t grab = grab_frame ();
4551         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4552                 _editor->snap_to_with_modifier (grab, event);
4553         } else {
4554                 grab = raw_grab_frame ();
4555         }
4556
4557         /* base start and end on initial click position */
4558
4559         if (pf < grab) {
4560                 start = pf;
4561                 end = grab;
4562         } else {
4563                 end = pf;
4564                 start = grab;
4565         }
4566
4567         if (current_pointer_y() < grab_y()) {
4568                 y1 = current_pointer_y();
4569                 y2 = grab_y();
4570         } else {
4571                 y2 = current_pointer_y();
4572                 y1 = grab_y();
4573         }
4574
4575         if (start != end || y1 != y2) {
4576
4577                 double x1 = _editor->sample_to_pixel (start);
4578                 double x2 = _editor->sample_to_pixel (end);
4579                 const double min_dimension = 2.0;
4580
4581                 if (_vertical_only) {
4582                         /* fixed 10 pixel width */
4583                         x2 = x1 + 10;
4584                 } else {
4585                         if (x2 < x1) {
4586                                 x2 = min (x1 - min_dimension, x2);
4587                         } else {
4588                                 x2 = max (x1 + min_dimension, x2);
4589                         }
4590                 }
4591
4592                 if (y2 < y1) {
4593                         y2 = min (y1 - min_dimension, y2);
4594                 } else {
4595                         y2 = max (y1 + min_dimension, y2);
4596                 }
4597
4598                 /* translate rect into item space and set */
4599
4600                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4601
4602                 /* this drag is a _trackview_only == true drag, so the y1 and
4603                  * y2 (computed using current_pointer_y() and grab_y()) will be
4604                  * relative to the top of the trackview group). The
4605                  * rubberband rect has the same parent/scroll offset as the
4606                  * the trackview group, so we can use the "r" rect directly
4607                  * to set the shape of the rubberband.
4608                  */
4609
4610                 _editor->rubberband_rect->set (r);
4611                 _editor->rubberband_rect->show();
4612                 _editor->rubberband_rect->raise_to_top();
4613
4614                 show_verbose_cursor_time (pf);
4615
4616                 do_select_things (event, true);
4617         }
4618 }
4619
4620 void
4621 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4622 {
4623         framepos_t x1;
4624         framepos_t x2;
4625         framepos_t grab = grab_frame ();
4626         framepos_t lpf = last_pointer_frame ();
4627
4628         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4629                 grab = raw_grab_frame ();
4630                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4631         }
4632
4633         if (grab < lpf) {
4634                 x1 = grab;
4635                 x2 = lpf;
4636         } else {
4637                 x2 = grab;
4638                 x1 = lpf;
4639         }
4640
4641         double y1;
4642         double y2;
4643
4644         if (current_pointer_y() < grab_y()) {
4645                 y1 = current_pointer_y();
4646                 y2 = grab_y();
4647         } else {
4648                 y2 = current_pointer_y();
4649                 y1 = grab_y();
4650         }
4651
4652         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4653 }
4654
4655 void
4656 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4657 {
4658         if (movement_occurred) {
4659
4660                 motion (event, false);
4661                 do_select_things (event, false);
4662
4663         } else {
4664
4665                 /* just a click */
4666
4667                 bool do_deselect = true;
4668                 MidiTimeAxisView* mtv;
4669
4670                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4671                         /* MIDI track */
4672                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4673                                 /* nothing selected */
4674                                 add_midi_region (mtv, true);
4675                                 do_deselect = false;
4676                         }
4677                 }
4678
4679                 /* do not deselect if Primary or Tertiary (toggle-select or
4680                  * extend-select are pressed.
4681                  */
4682
4683                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4684                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4685                     do_deselect) {
4686                         deselect_things ();
4687                 }
4688
4689         }
4690
4691         _editor->rubberband_rect->hide();
4692 }
4693
4694 void
4695 RubberbandSelectDrag::aborted (bool)
4696 {
4697         _editor->rubberband_rect->hide ();
4698 }
4699
4700 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4701         : RegionDrag (e, i, p, v)
4702 {
4703         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4704 }
4705
4706 void
4707 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4708 {
4709         Drag::start_grab (event, cursor);
4710
4711         _editor->get_selection().add (_primary);
4712
4713         framepos_t where = _primary->region()->position();
4714         setup_snap_delta (where);
4715
4716         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4717 }
4718
4719 void
4720 TimeFXDrag::motion (GdkEvent* event, bool)
4721 {
4722         RegionView* rv = _primary;
4723         StreamView* cv = rv->get_time_axis_view().view ();
4724
4725         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4726         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4727         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4728         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4729         _editor->snap_to_with_modifier (pf, event);
4730         pf -= snap_delta (event->button.state);
4731
4732         if (pf > rv->region()->position()) {
4733                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4734         }
4735
4736         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4737 }
4738
4739 void
4740 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4741 {
4742         /* this may have been a single click, no drag. We still want the dialog
4743            to show up in that case, so that the user can manually edit the
4744            parameters for the timestretch.
4745         */
4746
4747         float fraction = 1.0;
4748
4749         if (movement_occurred) {
4750
4751                 motion (event, false);
4752
4753                 _primary->get_time_axis_view().hide_timestretch ();
4754
4755                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4756
4757                 if (adjusted_frame_pos < _primary->region()->position()) {
4758                         /* backwards drag of the left edge - not usable */
4759                         return;
4760                 }
4761
4762                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4763
4764                 fraction = (double) newlen / (double) _primary->region()->length();
4765
4766 #ifndef USE_RUBBERBAND
4767                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4768                 if (_primary->region()->data_type() == DataType::AUDIO) {
4769                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4770                 }
4771 #endif
4772         }
4773
4774         if (!_editor->get_selection().regions.empty()) {
4775                 /* primary will already be included in the selection, and edit
4776                    group shared editing will propagate selection across
4777                    equivalent regions, so just use the current region
4778                    selection.
4779                 */
4780
4781                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4782                         error << _("An error occurred while executing time stretch operation") << endmsg;
4783                 }
4784         }
4785 }
4786
4787 void
4788 TimeFXDrag::aborted (bool)
4789 {
4790         _primary->get_time_axis_view().hide_timestretch ();
4791 }
4792
4793 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4794         : Drag (e, i)
4795 {
4796         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4797 }
4798
4799 void
4800 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4801 {
4802         Drag::start_grab (event);
4803 }
4804
4805 void
4806 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4807 {
4808         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4809 }
4810
4811 void
4812 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4813 {
4814         if (movement_occurred && _editor->session()) {
4815                 /* make sure we stop */
4816                 _editor->session()->request_transport_speed (0.0);
4817         }
4818 }
4819
4820 void
4821 ScrubDrag::aborted (bool)
4822 {
4823         /* XXX: TODO */
4824 }
4825
4826 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4827         : Drag (e, i)
4828         , _operation (o)
4829         , _add (false)
4830         , _time_selection_at_start (!_editor->get_selection().time.empty())
4831 {
4832         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4833
4834         if (_time_selection_at_start) {
4835                 start_at_start = _editor->get_selection().time.start();
4836                 end_at_start = _editor->get_selection().time.end_frame();
4837         }
4838 }
4839
4840 void
4841 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4842 {
4843         if (_editor->session() == 0) {
4844                 return;
4845         }
4846
4847         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4848
4849         switch (_operation) {
4850         case CreateSelection:
4851                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4852                         _add = true;
4853                 } else {
4854                         _add = false;
4855                 }
4856                 cursor = _editor->cursors()->selector;
4857                 Drag::start_grab (event, cursor);
4858                 break;
4859
4860         case SelectionStartTrim:
4861                 if (_editor->clicked_axisview) {
4862                         _editor->clicked_axisview->order_selection_trims (_item, true);
4863                 }
4864                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4865                 break;
4866
4867         case SelectionEndTrim:
4868                 if (_editor->clicked_axisview) {
4869                         _editor->clicked_axisview->order_selection_trims (_item, false);
4870                 }
4871                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4872                 break;
4873
4874         case SelectionMove:
4875                 Drag::start_grab (event, cursor);
4876                 break;
4877
4878         case SelectionExtend:
4879                 Drag::start_grab (event, cursor);
4880                 break;
4881         }
4882
4883         if (_operation == SelectionMove) {
4884                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4885         } else {
4886                 show_verbose_cursor_time (adjusted_current_frame (event));
4887         }
4888 }
4889
4890 void
4891 SelectionDrag::setup_pointer_frame_offset ()
4892 {
4893         switch (_operation) {
4894         case CreateSelection:
4895                 _pointer_frame_offset = 0;
4896                 break;
4897
4898         case SelectionStartTrim:
4899         case SelectionMove:
4900                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4901                 break;
4902
4903         case SelectionEndTrim:
4904                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4905                 break;
4906
4907         case SelectionExtend:
4908                 break;
4909         }
4910 }
4911
4912 void
4913 SelectionDrag::motion (GdkEvent* event, bool first_move)
4914 {
4915         framepos_t start = 0;
4916         framepos_t end = 0;
4917         framecnt_t length = 0;
4918         framecnt_t distance = 0;
4919
4920         framepos_t const pending_position = adjusted_current_frame (event);
4921
4922         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4923                 return;
4924         }
4925
4926         switch (_operation) {
4927         case CreateSelection:
4928         {
4929                 framepos_t grab = grab_frame ();
4930
4931                 if (first_move) {
4932                         grab = adjusted_current_frame (event, false);
4933                         if (grab < pending_position) {
4934                                 _editor->snap_to (grab, RoundDownMaybe);
4935                         }  else {
4936                                 _editor->snap_to (grab, RoundUpMaybe);
4937                         }
4938                 }
4939
4940                 if (pending_position < grab) {
4941                         start = pending_position;
4942                         end = grab;
4943                 } else {
4944                         end = pending_position;
4945                         start = grab;
4946                 }
4947
4948                 /* first drag: Either add to the selection
4949                    or create a new selection
4950                 */
4951
4952                 if (first_move) {
4953
4954                         if (_add) {
4955
4956                                 /* adding to the selection */
4957                                 _editor->set_selected_track_as_side_effect (Selection::Add);
4958                                 _editor->clicked_selection = _editor->selection->add (start, end);
4959                                 _add = false;
4960
4961                         } else {
4962
4963                                 /* new selection */
4964
4965                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
4966                                         _editor->set_selected_track_as_side_effect (Selection::Set);
4967                                 }
4968
4969                                 _editor->clicked_selection = _editor->selection->set (start, end);
4970                         }
4971                 }
4972
4973                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
4974                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
4975                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
4976                 if (atest) {
4977                         _editor->selection->add (atest);
4978                         break;
4979                 }
4980
4981                 /* select all tracks within the rectangle that we've marked out so far */
4982                 TrackViewList new_selection;
4983                 TrackViewList& all_tracks (_editor->track_views);
4984
4985                 ArdourCanvas::Coord const top = grab_y();
4986                 ArdourCanvas::Coord const bottom = current_pointer_y();
4987
4988                 if (top >= 0 && bottom >= 0) {
4989
4990                         //first, find the tracks that are covered in the y range selection
4991                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
4992                                 if ((*i)->covered_by_y_range (top, bottom)) {
4993                                         new_selection.push_back (*i);
4994                                 }
4995                         }
4996
4997                         //now find any tracks that are GROUPED with the tracks we selected
4998                         TrackViewList grouped_add = new_selection;
4999                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5000                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5001                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5002                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5003                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5004                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5005                                                         grouped_add.push_back (*j);
5006                                         }
5007                                 }
5008                         }
5009
5010                         //now compare our list with the current selection, and add or remove as necessary
5011                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5012                         TrackViewList tracks_to_add;
5013                         TrackViewList tracks_to_remove;
5014                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5015                                 if ( !_editor->selection->tracks.contains ( *i ) )
5016                                         tracks_to_add.push_back ( *i );
5017                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5018                                 if ( !grouped_add.contains ( *i ) )
5019                                         tracks_to_remove.push_back ( *i );
5020                         _editor->selection->add(tracks_to_add);
5021                         _editor->selection->remove(tracks_to_remove);
5022
5023                 }
5024         }
5025         break;
5026
5027         case SelectionStartTrim:
5028
5029                 end = _editor->selection->time[_editor->clicked_selection].end;
5030
5031                 if (pending_position > end) {
5032                         start = end;
5033                 } else {
5034                         start = pending_position;
5035                 }
5036                 break;
5037
5038         case SelectionEndTrim:
5039
5040                 start = _editor->selection->time[_editor->clicked_selection].start;
5041
5042                 if (pending_position < start) {
5043                         end = start;
5044                 } else {
5045                         end = pending_position;
5046                 }
5047
5048                 break;
5049
5050         case SelectionMove:
5051
5052                 start = _editor->selection->time[_editor->clicked_selection].start;
5053                 end = _editor->selection->time[_editor->clicked_selection].end;
5054
5055                 length = end - start;
5056                 distance = pending_position - start;
5057                 start = pending_position;
5058                 _editor->snap_to (start);
5059
5060                 end = start + length;
5061
5062                 break;
5063
5064         case SelectionExtend:
5065                 break;
5066         }
5067
5068         if (start != end) {
5069                 switch (_operation) {
5070                 case SelectionMove:
5071                         if (_time_selection_at_start) {
5072                                 _editor->selection->move_time (distance);
5073                         }
5074                         break;
5075                 default:
5076                         _editor->selection->replace (_editor->clicked_selection, start, end);
5077                 }
5078         }
5079
5080         if (_operation == SelectionMove) {
5081                 show_verbose_cursor_time(start);
5082         } else {
5083                 show_verbose_cursor_time(pending_position);
5084         }
5085 }
5086
5087 void
5088 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5089 {
5090         Session* s = _editor->session();
5091
5092         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5093         if (movement_occurred) {
5094                 motion (event, false);
5095                 /* XXX this is not object-oriented programming at all. ick */
5096                 if (_editor->selection->time.consolidate()) {
5097                         _editor->selection->TimeChanged ();
5098                 }
5099
5100                 /* XXX what if its a music time selection? */
5101                 if (s) {
5102                         if (s->get_play_range() && s->transport_rolling()) {
5103                                 s->request_play_range (&_editor->selection->time, true);
5104                         } else if (!s->config.get_external_sync()) {
5105                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5106                                         if (_operation == SelectionEndTrim)
5107                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5108                                         else
5109                                                 s->request_locate (_editor->get_selection().time.start());
5110                                 }
5111                         }
5112
5113                         if (_editor->get_selection().time.length() != 0) {
5114                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5115                         } else {
5116                                 s->clear_range_selection ();
5117                         }
5118                 }
5119
5120         } else {
5121                 /* just a click, no pointer movement.
5122                  */
5123
5124                 if (_operation == SelectionExtend) {
5125                         if (_time_selection_at_start) {
5126                                 framepos_t pos = adjusted_current_frame (event, false);
5127                                 framepos_t start = min (pos, start_at_start);
5128                                 framepos_t end = max (pos, end_at_start);
5129                                 _editor->selection->set (start, end);
5130                         }
5131                 } else {
5132                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5133                                 if (_editor->clicked_selection) {
5134                                         _editor->selection->remove (_editor->clicked_selection);
5135                                 }
5136                         } else {
5137                                 if (!_editor->clicked_selection) {
5138                                         _editor->selection->clear_time();
5139                                 }
5140                         }
5141                 }
5142
5143                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5144                         _editor->selection->set (_editor->clicked_axisview);
5145                 }
5146
5147                 if (s && s->get_play_range () && s->transport_rolling()) {
5148                         s->request_stop (false, false);
5149                 }
5150
5151         }
5152
5153         _editor->stop_canvas_autoscroll ();
5154         _editor->clicked_selection = 0;
5155         _editor->commit_reversible_selection_op ();
5156 }
5157
5158 void
5159 SelectionDrag::aborted (bool)
5160 {
5161         /* XXX: TODO */
5162 }
5163
5164 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5165         : Drag (e, i, false),
5166           _operation (o),
5167           _copy (false)
5168 {
5169         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5170
5171         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5172                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5173                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5174         _drag_rect->hide ();
5175
5176         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5177         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5178 }
5179
5180 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5181 {
5182         /* normal canvas items will be cleaned up when their parent group is deleted. But
5183            this item is created as the child of a long-lived parent group, and so we
5184            need to explicitly delete it.
5185         */
5186         delete _drag_rect;
5187 }
5188
5189 void
5190 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5191 {
5192         if (_editor->session() == 0) {
5193                 return;
5194         }
5195
5196         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5197
5198         if (!_editor->temp_location) {
5199                 _editor->temp_location = new Location (*_editor->session());
5200         }
5201
5202         switch (_operation) {
5203         case CreateSkipMarker:
5204         case CreateRangeMarker:
5205         case CreateTransportMarker:
5206         case CreateCDMarker:
5207
5208                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5209                         _copy = true;
5210                 } else {
5211                         _copy = false;
5212                 }
5213                 cursor = _editor->cursors()->selector;
5214                 break;
5215         }
5216
5217         Drag::start_grab (event, cursor);
5218
5219         show_verbose_cursor_time (adjusted_current_frame (event));
5220 }
5221
5222 void
5223 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5224 {
5225         framepos_t start = 0;
5226         framepos_t end = 0;
5227         ArdourCanvas::Rectangle *crect;
5228
5229         switch (_operation) {
5230         case CreateSkipMarker:
5231                 crect = _editor->range_bar_drag_rect;
5232                 break;
5233         case CreateRangeMarker:
5234                 crect = _editor->range_bar_drag_rect;
5235                 break;
5236         case CreateTransportMarker:
5237                 crect = _editor->transport_bar_drag_rect;
5238                 break;
5239         case CreateCDMarker:
5240                 crect = _editor->cd_marker_bar_drag_rect;
5241                 break;
5242         default:
5243                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5244                 return;
5245                 break;
5246         }
5247
5248         framepos_t const pf = adjusted_current_frame (event);
5249
5250         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5251                 framepos_t grab = grab_frame ();
5252                 _editor->snap_to (grab);
5253
5254                 if (pf < grab_frame()) {
5255                         start = pf;
5256                         end = grab;
5257                 } else {
5258                         end = pf;
5259                         start = grab;
5260                 }
5261
5262                 /* first drag: Either add to the selection
5263                    or create a new selection.
5264                 */
5265
5266                 if (first_move) {
5267
5268                         _editor->temp_location->set (start, end);
5269
5270                         crect->show ();
5271
5272                         update_item (_editor->temp_location);
5273                         _drag_rect->show();
5274                         //_drag_rect->raise_to_top();
5275
5276                 }
5277         }
5278
5279         if (start != end) {
5280                 _editor->temp_location->set (start, end);
5281
5282                 double x1 = _editor->sample_to_pixel (start);
5283                 double x2 = _editor->sample_to_pixel (end);
5284                 crect->set_x0 (x1);
5285                 crect->set_x1 (x2);
5286
5287                 update_item (_editor->temp_location);
5288         }
5289
5290         show_verbose_cursor_time (pf);
5291
5292 }
5293
5294 void
5295 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5296 {
5297         Location * newloc = 0;
5298         string rangename;
5299         int flags;
5300
5301         if (movement_occurred) {
5302                 motion (event, false);
5303                 _drag_rect->hide();
5304
5305                 switch (_operation) {
5306                 case CreateSkipMarker:
5307                 case CreateRangeMarker:
5308                 case CreateCDMarker:
5309                     {
5310                         XMLNode &before = _editor->session()->locations()->get_state();
5311                         if (_operation == CreateSkipMarker) {
5312                                 _editor->begin_reversible_command (_("new skip marker"));
5313                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5314                                 flags = Location::IsRangeMarker | Location::IsSkip;
5315                                 _editor->range_bar_drag_rect->hide();
5316                         } else if (_operation == CreateCDMarker) {
5317                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5318                                 _editor->begin_reversible_command (_("new CD marker"));
5319                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5320                                 _editor->cd_marker_bar_drag_rect->hide();
5321                         } else {
5322                                 _editor->begin_reversible_command (_("new skip marker"));
5323                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5324                                 flags = Location::IsRangeMarker;
5325                                 _editor->range_bar_drag_rect->hide();
5326                         }
5327                         newloc = new Location (
5328                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5329                                 );
5330
5331                         _editor->session()->locations()->add (newloc, true);
5332                         XMLNode &after = _editor->session()->locations()->get_state();
5333                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5334                         _editor->commit_reversible_command ();
5335                         break;
5336                     }
5337
5338                 case CreateTransportMarker:
5339                         // popup menu to pick loop or punch
5340                         _editor->new_transport_marker_context_menu (&event->button, _item);
5341                         break;
5342                 }
5343
5344         } else {
5345
5346                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5347
5348                 if (_operation == CreateTransportMarker) {
5349
5350                         /* didn't drag, so just locate */
5351
5352                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5353
5354                 } else if (_operation == CreateCDMarker) {
5355
5356                         /* didn't drag, but mark is already created so do
5357                          * nothing */
5358
5359                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5360
5361                         framepos_t start;
5362                         framepos_t end;
5363
5364                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5365
5366                         if (end == max_framepos) {
5367                                 end = _editor->session()->current_end_frame ();
5368                         }
5369
5370                         if (start == max_framepos) {
5371                                 start = _editor->session()->current_start_frame ();
5372                         }
5373
5374                         switch (_editor->mouse_mode) {
5375                         case MouseObject:
5376                                 /* find the two markers on either side and then make the selection from it */
5377                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5378                                 break;
5379
5380                         case MouseRange:
5381                                 /* find the two markers on either side of the click and make the range out of it */
5382                                 _editor->selection->set (start, end);
5383                                 break;
5384
5385                         default:
5386                                 break;
5387                         }
5388                 }
5389         }
5390
5391         _editor->stop_canvas_autoscroll ();
5392 }
5393
5394 void
5395 RangeMarkerBarDrag::aborted (bool movement_occurred)
5396 {
5397         if (movement_occurred) {
5398                 _drag_rect->hide ();
5399         }
5400 }
5401
5402 void
5403 RangeMarkerBarDrag::update_item (Location* location)
5404 {
5405         double const x1 = _editor->sample_to_pixel (location->start());
5406         double const x2 = _editor->sample_to_pixel (location->end());
5407
5408         _drag_rect->set_x0 (x1);
5409         _drag_rect->set_x1 (x2);
5410 }
5411
5412 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5413         : Drag (e, i)
5414         , _cumulative_dx (0)
5415         , _cumulative_dy (0)
5416         , _was_selected (false)
5417 {
5418         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5419
5420         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5421         assert (_primary);
5422         _region = &_primary->region_view ();
5423         _note_height = _region->midi_stream_view()->note_height ();
5424 }
5425
5426 void
5427 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5428 {
5429         Drag::start_grab (event);
5430         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5431
5432         if (!(_was_selected = _primary->selected())) {
5433
5434                 /* tertiary-click means extend selection - we'll do that on button release,
5435                    so don't add it here, because otherwise we make it hard to figure
5436                    out the "extend-to" range.
5437                 */
5438
5439                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5440
5441                 if (!extend) {
5442                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5443
5444                         if (add) {
5445                                 _region->note_selected (_primary, true);
5446                         } else {
5447                                 _editor->get_selection().clear_points();
5448                                 _region->unique_select (_primary);
5449                         }
5450                 }
5451         }
5452 }
5453
5454 /** @return Current total drag x change in frames */
5455 frameoffset_t
5456 NoteDrag::total_dx (const guint state) const
5457 {
5458         /* dx in frames */
5459         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5460
5461         /* primary note time */
5462         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5463
5464         /* new time of the primary note in session frames */
5465         frameoffset_t st = n + dx + snap_delta (state);
5466
5467         framepos_t const rp = _region->region()->position ();
5468
5469         /* prevent the note being dragged earlier than the region's position */
5470         st = max (st, rp);
5471
5472         /* possibly snap and return corresponding delta */
5473
5474         bool snap = true;
5475
5476         if (ArdourKeyboard::indicates_snap (state)) {
5477                 if (_editor->snap_mode () != SnapOff) {
5478                         snap = false;
5479                 }
5480         } else {
5481                 if (_editor->snap_mode () == SnapOff) {
5482                         snap = false;
5483                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5484                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5485                                 snap = true;
5486                         }
5487                 }
5488         }
5489
5490         frameoffset_t ret;
5491         if (snap) {
5492                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5493                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5494         } else {
5495                 ret = st - n - snap_delta (state);
5496         }
5497         return ret;
5498 }
5499
5500 /** @return Current total drag y change in note number */
5501 int8_t
5502 NoteDrag::total_dy () const
5503 {
5504         MidiStreamView* msv = _region->midi_stream_view ();
5505         double const y = _region->midi_view()->y_position ();
5506         /* new current note */
5507         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5508         /* clamp */
5509         n = max (msv->lowest_note(), n);
5510         n = min (msv->highest_note(), n);
5511         /* and work out delta */
5512         return n - msv->y_to_note (grab_y() - y);
5513 }
5514
5515 void
5516 NoteDrag::motion (GdkEvent * event, bool)
5517 {
5518         /* Total change in x and y since the start of the drag */
5519         frameoffset_t const dx = total_dx (event->button.state);
5520         int8_t const dy = total_dy ();
5521
5522         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5523         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5524         double const tdy = -dy * _note_height - _cumulative_dy;
5525
5526         if (tdx || tdy) {
5527                 _cumulative_dx += tdx;
5528                 _cumulative_dy += tdy;
5529
5530                 int8_t note_delta = total_dy();
5531
5532                 _region->move_selection (tdx, tdy, note_delta);
5533
5534                 /* the new note value may be the same as the old one, but we
5535                  * don't know what that means because the selection may have
5536                  * involved more than one note and we might be doing something
5537                  * odd with them. so show the note value anyway, always.
5538                  */
5539
5540                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5541
5542                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5543         }
5544 }
5545
5546 void
5547 NoteDrag::finished (GdkEvent* ev, bool moved)
5548 {
5549         if (!moved) {
5550                 /* no motion - select note */
5551
5552                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5553                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5554
5555                         bool changed = false;
5556
5557                         if (_was_selected) {
5558                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5559                                 if (add) {
5560                                         _region->note_deselected (_primary);
5561                                         changed = true;
5562                                 } else {
5563                                         _editor->get_selection().clear_points();
5564                                         _region->unique_select (_primary);
5565                                         changed = true;
5566                                 }
5567                         } else {
5568                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5569                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5570
5571                                 if (!extend && !add && _region->selection_size() > 1) {
5572                                         _editor->get_selection().clear_points();
5573                                         _region->unique_select (_primary);
5574                                         changed = true;
5575                                 } else if (extend) {
5576                                         _region->note_selected (_primary, true, true);
5577                                         changed = true;
5578                                 } else {
5579                                         /* it was added during button press */
5580                                         changed = true;
5581
5582                                 }
5583                         }
5584
5585                         if (changed) {
5586                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5587                                 _editor->commit_reversible_selection_op();
5588                         }
5589                 }
5590         } else {
5591                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5592         }
5593 }
5594
5595 void
5596 NoteDrag::aborted (bool)
5597 {
5598         /* XXX: TODO */
5599 }
5600
5601 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5602 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5603         : Drag (editor, atv->base_item ())
5604         , _ranges (r)
5605         , _y_origin (atv->y_position())
5606         , _nothing_to_drag (false)
5607 {
5608         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5609         setup (atv->lines ());
5610 }
5611
5612 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5613 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5614         : Drag (editor, rv->get_canvas_group ())
5615         , _ranges (r)
5616         , _y_origin (rv->get_time_axis_view().y_position())
5617         , _nothing_to_drag (false)
5618         , _integral (false)
5619 {
5620         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5621
5622         list<boost::shared_ptr<AutomationLine> > lines;
5623
5624         AudioRegionView*      audio_view;
5625         AutomationRegionView* automation_view;
5626         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5627                 lines.push_back (audio_view->get_gain_line ());
5628         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5629                 lines.push_back (automation_view->line ());
5630                 _integral = true;
5631         } else {
5632                 error << _("Automation range drag created for invalid region type") << endmsg;
5633         }
5634
5635         setup (lines);
5636 }
5637
5638 /** @param lines AutomationLines to drag.
5639  *  @param offset Offset from the session start to the points in the AutomationLines.
5640  */
5641 void
5642 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5643 {
5644         /* find the lines that overlap the ranges being dragged */
5645         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5646         while (i != lines.end ()) {
5647                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5648                 ++j;
5649
5650                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5651
5652                 /* check this range against all the AudioRanges that we are using */
5653                 list<AudioRange>::const_iterator k = _ranges.begin ();
5654                 while (k != _ranges.end()) {
5655                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5656                                 break;
5657                         }
5658                         ++k;
5659                 }
5660
5661                 /* add it to our list if it overlaps at all */
5662                 if (k != _ranges.end()) {
5663                         Line n;
5664                         n.line = *i;
5665                         n.state = 0;
5666                         n.range = r;
5667                         _lines.push_back (n);
5668                 }
5669
5670                 i = j;
5671         }
5672
5673         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5674 }
5675
5676 double
5677 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5678 {
5679         return 1.0 - ((global_y - _y_origin) / line->height());
5680 }
5681
5682 double
5683 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5684 {
5685         const double v = list->eval(x);
5686         return _integral ? rint(v) : v;
5687 }
5688
5689 void
5690 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5691 {
5692         Drag::start_grab (event, cursor);
5693
5694         /* Get line states before we start changing things */
5695         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5696                 i->state = &i->line->get_state ();
5697                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5698         }
5699
5700         if (_ranges.empty()) {
5701
5702                 /* No selected time ranges: drag all points */
5703                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5704                         uint32_t const N = i->line->npoints ();
5705                         for (uint32_t j = 0; j < N; ++j) {
5706                                 i->points.push_back (i->line->nth (j));
5707                         }
5708                 }
5709
5710         }
5711
5712         if (_nothing_to_drag) {
5713                 return;
5714         }
5715 }
5716
5717 void
5718 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5719 {
5720         if (_nothing_to_drag && !first_move) {
5721                 return;
5722         }
5723
5724         if (first_move) {
5725                 _editor->begin_reversible_command (_("automation range move"));
5726
5727                 if (!_ranges.empty()) {
5728
5729                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5730
5731                                 framecnt_t const half = (i->start + i->end) / 2;
5732
5733                                 /* find the line that this audio range starts in */
5734                                 list<Line>::iterator j = _lines.begin();
5735                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5736                                         ++j;
5737                                 }
5738
5739                                 if (j != _lines.end()) {
5740                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5741
5742                                 /* j is the line that this audio range starts in; fade into it;
5743                                    64 samples length plucked out of thin air.
5744                                 */
5745
5746                                         framepos_t a = i->start + 64;
5747                                         if (a > half) {
5748                                                 a = half;
5749                                         }
5750
5751                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5752                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5753
5754                                         XMLNode &before = the_list->get_state();
5755                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5756                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5757
5758                                         if (add_p || add_q) {
5759                                                 _editor->session()->add_command (
5760                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5761                                         }
5762                                 }
5763
5764                                 /* same thing for the end */
5765
5766                                 j = _lines.begin();
5767                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5768                                         ++j;
5769                                 }
5770
5771                                 if (j != _lines.end()) {
5772                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5773
5774                                         /* j is the line that this audio range starts in; fade out of it;
5775                                            64 samples length plucked out of thin air.
5776                                         */
5777
5778                                         framepos_t b = i->end - 64;
5779                                         if (b < half) {
5780                                                 b = half;
5781                                         }
5782
5783                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5784                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5785
5786                                         XMLNode &before = the_list->get_state();
5787                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5788                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5789
5790                                         if (add_p || add_q) {
5791                                                 _editor->session()->add_command (
5792                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5793                                         }
5794                                 }
5795                         }
5796
5797                         _nothing_to_drag = true;
5798
5799                         /* Find all the points that should be dragged and put them in the relevant
5800                            points lists in the Line structs.
5801                         */
5802
5803                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5804
5805                                 uint32_t const N = i->line->npoints ();
5806                                 for (uint32_t j = 0; j < N; ++j) {
5807
5808                                         /* here's a control point on this line */
5809                                         ControlPoint* p = i->line->nth (j);
5810                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5811
5812                                         /* see if it's inside a range */
5813                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5814                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5815                                                 ++k;
5816                                         }
5817
5818                                         if (k != _ranges.end()) {
5819                                                 /* dragging this point */
5820                                                 _nothing_to_drag = false;
5821                                                 i->points.push_back (p);
5822                                         }
5823                                 }
5824                         }
5825                 }
5826
5827                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5828                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5829                 }
5830         }
5831
5832         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5833                 float const f = y_fraction (l->line, current_pointer_y());
5834                 /* we are ignoring x position for this drag, so we can just pass in anything */
5835                 pair<double, float> result;
5836                 uint32_t ignored;
5837                 result = l->line->drag_motion (0, f, true, false, ignored);
5838                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5839         }
5840 }
5841
5842 void
5843 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5844 {
5845         if (_nothing_to_drag || !motion_occurred) {
5846                 return;
5847         }
5848
5849         motion (event, false);
5850         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5851                 i->line->end_drag (false, 0);
5852         }
5853
5854         _editor->commit_reversible_command ();
5855 }
5856
5857 void
5858 AutomationRangeDrag::aborted (bool)
5859 {
5860         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5861                 i->line->reset ();
5862         }
5863 }
5864
5865 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5866         : view (v)
5867         , initial_time_axis_view (itav)
5868 {
5869         /* note that time_axis_view may be null if the regionview was created
5870          * as part of a copy operation.
5871          */
5872         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5873         layer = v->region()->layer ();
5874         initial_y = v->get_canvas_group()->position().y;
5875         initial_playlist = v->region()->playlist ();
5876         initial_position = v->region()->position ();
5877         initial_end = v->region()->position () + v->region()->length ();
5878 }
5879
5880 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5881         : Drag (e, i->canvas_item ())
5882         , _region_view (r)
5883         , _patch_change (i)
5884         , _cumulative_dx (0)
5885 {
5886         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5887                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5888                                                    grab_frame()));
5889 }
5890
5891 void
5892 PatchChangeDrag::motion (GdkEvent* ev, bool)
5893 {
5894         framepos_t f = adjusted_current_frame (ev);
5895         boost::shared_ptr<Region> r = _region_view->region ();
5896         f = max (f, r->position ());
5897         f = min (f, r->last_frame ());
5898
5899         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5900         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5901         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5902         _cumulative_dx = dxu;
5903 }
5904
5905 void
5906 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5907 {
5908         if (!movement_occurred) {
5909                 return;
5910         }
5911
5912         boost::shared_ptr<Region> r (_region_view->region ());
5913         framepos_t f = adjusted_current_frame (ev);
5914         f = max (f, r->position ());
5915         f = min (f, r->last_frame ());
5916
5917         _region_view->move_patch_change (
5918                 *_patch_change,
5919                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5920                 );
5921 }
5922
5923 void
5924 PatchChangeDrag::aborted (bool)
5925 {
5926         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
5927 }
5928
5929 void
5930 PatchChangeDrag::setup_pointer_frame_offset ()
5931 {
5932         boost::shared_ptr<Region> region = _region_view->region ();
5933         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
5934 }
5935
5936 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
5937         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5938         , _region_view (rv)
5939 {
5940
5941 }
5942
5943 void
5944 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
5945 {
5946         _region_view->update_drag_selection (
5947                 x1, x2, y1, y2,
5948                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
5949 }
5950
5951 void
5952 MidiRubberbandSelectDrag::deselect_things ()
5953 {
5954         /* XXX */
5955 }
5956
5957 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
5958         : RubberbandSelectDrag (e, rv->get_canvas_group ())
5959         , _region_view (rv)
5960 {
5961         _vertical_only = true;
5962 }
5963
5964 void
5965 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
5966 {
5967         double const y = _region_view->midi_view()->y_position ();
5968
5969         y1 = max (0.0, y1 - y);
5970         y2 = max (0.0, y2 - y);
5971
5972         _region_view->update_vertical_drag_selection (
5973                 y1,
5974                 y2,
5975                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
5976                 );
5977 }
5978
5979 void
5980 MidiVerticalSelectDrag::deselect_things ()
5981 {
5982         /* XXX */
5983 }
5984
5985 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
5986         : RubberbandSelectDrag (e, i)
5987 {
5988
5989 }
5990
5991 void
5992 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
5993 {
5994         if (drag_in_progress) {
5995                 /* We just want to select things at the end of the drag, not during it */
5996                 return;
5997         }
5998
5999         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6000
6001         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6002
6003         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6004
6005         _editor->commit_reversible_selection_op ();
6006 }
6007
6008 void
6009 EditorRubberbandSelectDrag::deselect_things ()
6010 {
6011         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6012
6013         _editor->selection->clear_tracks();
6014         _editor->selection->clear_regions();
6015         _editor->selection->clear_points ();
6016         _editor->selection->clear_lines ();
6017         _editor->selection->clear_midi_notes ();
6018
6019         _editor->commit_reversible_selection_op();
6020 }
6021
6022 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6023         : Drag (e, i)
6024         , _region_view (rv)
6025         , _drag_rect (0)
6026 {
6027         _note[0] = _note[1] = 0;
6028 }
6029
6030 NoteCreateDrag::~NoteCreateDrag ()
6031 {
6032         delete _drag_rect;
6033 }
6034
6035 framecnt_t
6036 NoteCreateDrag::grid_frames (framepos_t t) const
6037 {
6038         bool success;
6039         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6040         if (!success) {
6041                 grid_beats = Evoral::Beats(1);
6042         }
6043
6044         return _region_view->region_beats_to_region_frames (grid_beats);
6045 }
6046
6047 void
6048 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6049 {
6050         Drag::start_grab (event, cursor);
6051
6052         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6053
6054         framepos_t pf = _drags->current_pointer_frame ();
6055         framecnt_t const g = grid_frames (pf);
6056
6057         /* Hack so that we always snap to the note that we are over, instead of snapping
6058            to the next one if we're more than halfway through the one we're over.
6059         */
6060         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6061                 pf -= g / 2;
6062         }
6063
6064         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6065         _note[1] = _note[0];
6066
6067         MidiStreamView* sv = _region_view->midi_stream_view ();
6068         double const x = _editor->sample_to_pixel (_note[0]);
6069         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6070
6071         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6072         _drag_rect->set_outline_all ();
6073         _drag_rect->set_outline_color (0xffffff99);
6074         _drag_rect->set_fill_color (0xffffff66);
6075 }
6076
6077 void
6078 NoteCreateDrag::motion (GdkEvent* event, bool)
6079 {
6080         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6081         double const x0 = _editor->sample_to_pixel (_note[0]);
6082         double const x1 = _editor->sample_to_pixel (_note[1]);
6083         _drag_rect->set_x0 (std::min(x0, x1));
6084         _drag_rect->set_x1 (std::max(x0, x1));
6085 }
6086
6087 void
6088 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6089 {
6090         if (!had_movement) {
6091                 return;
6092         }
6093
6094         framepos_t const start = min (_note[0], _note[1]);
6095         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6096
6097         framecnt_t const g = grid_frames (start);
6098         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6099
6100         if (_editor->snap_mode() == SnapNormal && length < g) {
6101                 length = g;
6102         }
6103
6104         Evoral::Beats length_beats = max (
6105                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6106
6107         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6108 }
6109
6110 double
6111 NoteCreateDrag::y_to_region (double y) const
6112 {
6113         double x = 0;
6114         _region_view->get_canvas_group()->canvas_to_item (x, y);
6115         return y;
6116 }
6117
6118 void
6119 NoteCreateDrag::aborted (bool)
6120 {
6121
6122 }
6123
6124 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6125         : Drag (e, i)
6126         , arv (rv)
6127         , start (start_yn)
6128 {
6129         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6130 }
6131
6132 void
6133 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6134 {
6135         Drag::start_grab (event, cursor);
6136 }
6137
6138 void
6139 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6140 {
6141         double distance;
6142         double new_length;
6143         framecnt_t len;
6144
6145         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6146
6147         if (start) {
6148                 distance = _drags->current_pointer_x() - grab_x();
6149                 len = ar->fade_in()->back()->when;
6150         } else {
6151                 distance = grab_x() - _drags->current_pointer_x();
6152                 len = ar->fade_out()->back()->when;
6153         }
6154
6155         /* how long should it be ? */
6156
6157         new_length = len + _editor->pixel_to_sample (distance);
6158
6159         /* now check with the region that this is legal */
6160
6161         new_length = ar->verify_xfade_bounds (new_length, start);
6162
6163         if (start) {
6164                 arv->reset_fade_in_shape_width (ar, new_length);
6165         } else {
6166                 arv->reset_fade_out_shape_width (ar, new_length);
6167         }
6168 }
6169
6170 void
6171 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6172 {
6173         double distance;
6174         double new_length;
6175         framecnt_t len;
6176
6177         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6178
6179         if (start) {
6180                 distance = _drags->current_pointer_x() - grab_x();
6181                 len = ar->fade_in()->back()->when;
6182         } else {
6183                 distance = grab_x() - _drags->current_pointer_x();
6184                 len = ar->fade_out()->back()->when;
6185         }
6186
6187         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6188
6189         _editor->begin_reversible_command ("xfade trim");
6190         ar->playlist()->clear_owned_changes ();
6191
6192         if (start) {
6193                 ar->set_fade_in_length (new_length);
6194         } else {
6195                 ar->set_fade_out_length (new_length);
6196         }
6197
6198         /* Adjusting the xfade may affect other regions in the playlist, so we need
6199            to get undo Commands from the whole playlist rather than just the
6200            region.
6201         */
6202
6203         vector<Command*> cmds;
6204         ar->playlist()->rdiff (cmds);
6205         _editor->session()->add_commands (cmds);
6206         _editor->commit_reversible_command ();
6207
6208 }
6209
6210 void
6211 CrossfadeEdgeDrag::aborted (bool)
6212 {
6213         if (start) {
6214                 // arv->redraw_start_xfade ();
6215         } else {
6216                 // arv->redraw_end_xfade ();
6217         }
6218 }
6219
6220 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6221         : Drag (e, item, true)
6222         , line (new EditorCursor (*e))
6223 {
6224         line->set_position (pos);
6225         line->show ();
6226 }
6227
6228 RegionCutDrag::~RegionCutDrag ()
6229 {
6230         delete line;
6231 }
6232
6233 void
6234 RegionCutDrag::motion (GdkEvent*, bool)
6235 {
6236         framepos_t where = _drags->current_pointer_frame();
6237         _editor->snap_to (where);
6238
6239         line->set_position (where);
6240 }
6241
6242 void
6243 RegionCutDrag::finished (GdkEvent*, bool)
6244 {
6245         _editor->get_track_canvas()->canvas()->re_enter();
6246
6247         framepos_t pos = _drags->current_pointer_frame();
6248
6249         line->hide ();
6250
6251         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6252
6253         if (rs.empty()) {
6254                 return;
6255         }
6256
6257         _editor->split_regions_at (pos, rs);
6258 }
6259
6260 void
6261 RegionCutDrag::aborted (bool)
6262 {
6263 }