gtk2_ardour/editor_drag.cc

   1 /*
   2     Copyright (C) 2009 Paul Davis
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2 of the License, or
   7     (at your option) any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17
  18 */
  19
  20 #ifdef WAF_BUILD
  21 #include "gtk2ardour-config.h"
  22 #endif
  23
  24 #include <stdint.h>
  25 #include <algorithm>
  26
  27 #include "pbd/memento_command.h"
  28 #include "pbd/basename.h"
  29 #include "pbd/stateful_diff_command.h"
  30
  31 #include "gtkmm2ext/utils.h"
  32
  33 #include "ardour/audioengine.h"
  34 #include "ardour/audioregion.h"
  35 #include "ardour/audio_track.h"
  36 #include "ardour/dB.h"
  37 #include "ardour/midi_region.h"
  38 #include "ardour/midi_track.h"
  39 #include "ardour/operations.h"
  40 #include "ardour/region_factory.h"
  41 #include "ardour/session.h"
  42
  43 #include "canvas/canvas.h"
  44 #include "canvas/scroll_group.h"
  45
  46 #include "editor.h"
  47 #include "i18n.h"
  48 #include "keyboard.h"
  49 #include "audio_region_view.h"
  50 #include "automation_region_view.h"
  51 #include "midi_region_view.h"
  52 #include "ardour_ui.h"
  53 #include "gui_thread.h"
  54 #include "control_point.h"
  55 #include "region_gain_line.h"
  56 #include "editor_drag.h"
  57 #include "audio_time_axis.h"
  58 #include "midi_time_axis.h"
  59 #include "selection.h"
  60 #include "midi_selection.h"
  61 #include "automation_time_axis.h"
  62 #include "debug.h"
  63 #include "editor_cursors.h"
  64 #include "mouse_cursors.h"
  65 #include "note_base.h"
  66 #include "patch_change.h"
  67 #include "ui_config.h"
  68 #include "verbose_cursor.h"
  69
  70 using namespace std;
  71 using namespace ARDOUR;
  72 using namespace PBD;
  73 using namespace Gtk;
  74 using namespace Gtkmm2ext;
  75 using namespace Editing;
  76 using namespace ArdourCanvas;
  77
  78 using Gtkmm2ext::Keyboard;
  79
  80 double ControlPointDrag::_zero_gain_fraction = -1.0;
  81
  82 DragManager::DragManager (Editor* e)
  83         : _editor (e)
  84         , _ending (false)
  85         , _current_pointer_x (0.0)
  86         , _current_pointer_y (0.0)
  87         , _current_pointer_frame (0)
  88         , _old_follow_playhead (false)
  89 {
  90 }
  91
  92 DragManager::~DragManager ()
  93 {
  94         abort ();
  95 }
  96
  97 /** Call abort for each active drag */
  98 void
  99 DragManager::abort ()
 100 {
 101         _ending = true;
 102
 103         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 104                 (*i)->abort ();
 105                 delete *i;
 106         }
 107
 108         if (!_drags.empty ()) {
 109                 _editor->set_follow_playhead (_old_follow_playhead, false);
 110         }
 111
 112         _drags.clear ();
 113         _editor->abort_reversible_command();
 114
 115         _ending = false;
 116 }
 117
 118 void
 119 DragManager::add (Drag* d)
 120 {
 121         d->set_manager (this);
 122         _drags.push_back (d);
 123 }
 124
 125 void
 126 DragManager::set (Drag* d, GdkEvent* e, Gdk::Cursor* c)
 127 {
 128         d->set_manager (this);
 129         _drags.push_back (d);
 130         start_grab (e, c);
 131 }
 132
 133 void
 134 DragManager::start_grab (GdkEvent* e, Gdk::Cursor* c)
 135 {
 136         /* Prevent follow playhead during the drag to be nice to the user */
 137         _old_follow_playhead = _editor->follow_playhead ();
 138         _editor->set_follow_playhead (false);
 139
 140         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 141
 142         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 143                 (*i)->start_grab (e, c);
 144         }
 145 }
 146
 147 /** Call end_grab for each active drag.
 148  *  @return true if any drag reported movement having occurred.
 149  */
 150 bool
 151 DragManager::end_grab (GdkEvent* e)
 152 {
 153         _ending = true;
 154
 155         bool r = false;
 156         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 157                 bool const t = (*i)->end_grab (e);
 158                 if (t) {
 159                         r = true;
 160                 }
 161                 delete *i;
 162         }
 163
 164         _drags.clear ();
 165
 166         _ending = false;
 167
 168         _editor->set_follow_playhead (_old_follow_playhead, false);
 169
 170         return r;
 171 }
 172
 173 void
 174 DragManager::mark_double_click ()
 175 {
 176         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 177                 (*i)->set_double_click (true);
 178         }
 179 }
 180
 181 bool
 182 DragManager::motion_handler (GdkEvent* e, bool from_autoscroll)
 183 {
 184         bool r = false;
 185
 186         /* calling this implies that we expect the event to have canvas
 187          * coordinates
 188          *
 189          * Can we guarantee that this is true?
 190          */
 191
 192         _current_pointer_frame = _editor->canvas_event_sample (e, &_current_pointer_x, &_current_pointer_y);
 193
 194         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 195                 bool const t = (*i)->motion_handler (e, from_autoscroll);
 196                 /* run all handlers; return true if at least one of them
 197                    returns true (indicating that the event has been handled).
 198                 */
 199                 if (t) {
 200                         r = true;
 201                 }
 202
 203         }
 204
 205         return r;
 206 }
 207
 208 bool
 209 DragManager::have_item (ArdourCanvas::Item* i) const
 210 {
 211         list<Drag*>::const_iterator j = _drags.begin ();
 212         while (j != _drags.end() && (*j)->item () != i) {
 213                 ++j;
 214         }
 215
 216         return j != _drags.end ();
 217 }
 218
 219 Drag::Drag (Editor* e, ArdourCanvas::Item* i, bool trackview_only)
 220         : _editor (e)
 221         , _drags (0)
 222         , _item (i)
 223         , _pointer_frame_offset (0)
 224         , _x_constrained (false)
 225         , _y_constrained (false)
 226         , _was_rolling (false)
 227         , _trackview_only (trackview_only)
 228         , _move_threshold_passed (false)
 229         , _starting_point_passed (false)
 230         , _initially_vertical (false)
 231         , _was_double_click (false)
 232         , _grab_x (0.0)
 233         , _grab_y (0.0)
 234         , _last_pointer_x (0.0)
 235         , _last_pointer_y (0.0)
 236         , _raw_grab_frame (0)
 237         , _grab_frame (0)
 238         , _last_pointer_frame (0)
 239         , _snap_delta (0)
 240 {
 241
 242 }
 243
 244 void
 245 Drag::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t /*time*/)
 246 {
 247         _item->ungrab ();
 248         _item = new_item;
 249
 250         if (!_cursor_ctx) {
 251                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 252         } else {
 253                 _cursor_ctx->change (cursor);
 254         }
 255
 256         _item->grab ();
 257 }
 258
 259 void
 260 Drag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 261 {
 262
 263         /* we set up x/y dragging constraints on first move */
 264
 265         _raw_grab_frame = _editor->canvas_event_sample (event, &_grab_x, &_grab_y);
 266
 267         setup_pointer_frame_offset ();
 268         _grab_frame = adjusted_frame (_raw_grab_frame, event);
 269         _last_pointer_frame = _grab_frame;
 270         _last_pointer_x = _grab_x;
 271
 272         if (_trackview_only) {
 273                 _grab_y = _grab_y - _editor->get_trackview_group()->canvas_origin().y;
 274         }
 275
 276         _last_pointer_y = _grab_y;
 277
 278         _item->grab ();
 279
 280         if (!_editor->cursors()->is_invalid (cursor)) {
 281                 /* CAIROCANVAS need a variant here that passes *cursor */
 282                 _cursor_ctx = CursorContext::create (*_editor, cursor);
 283         }
 284
 285         if (_editor->session() && _editor->session()->transport_rolling()) {
 286                 _was_rolling = true;
 287         } else {
 288                 _was_rolling = false;
 289         }
 290
 291         switch (_editor->snap_type()) {
 292         case SnapToRegionStart:
 293         case SnapToRegionEnd:
 294         case SnapToRegionSync:
 295         case SnapToRegionBoundary:
 296                 _editor->build_region_boundary_cache ();
 297                 break;
 298         default:
 299                 break;
 300         }
 301 }
 302
 303 /** Call to end a drag `successfully'.  Ungrabs item and calls
 304  *  subclass' finished() method.
 305  *
 306  *  @param event GDK event, or 0.
 307  *  @return true if some movement occurred, otherwise false.
 308  */
 309 bool
 310 Drag::end_grab (GdkEvent* event)
 311 {
 312         _editor->stop_canvas_autoscroll ();
 313
 314         _item->ungrab ();
 315
 316         finished (event, _move_threshold_passed);
 317
 318         _editor->verbose_cursor()->hide ();
 319         _cursor_ctx.reset();
 320
 321         return _move_threshold_passed;
 322 }
 323
 324 framepos_t
 325 Drag::adjusted_frame (framepos_t f, GdkEvent const * event, bool snap) const
 326 {
 327         framepos_t pos = 0;
 328
 329         if (f > _pointer_frame_offset) {
 330                 pos = f - _pointer_frame_offset;
 331         }
 332
 333         if (snap) {
 334                 _editor->snap_to_with_modifier (pos, event);
 335         }
 336
 337         return pos;
 338 }
 339
 340 framepos_t
 341 Drag::adjusted_current_frame (GdkEvent const * event, bool snap) const
 342 {
 343         return adjusted_frame (_drags->current_pointer_frame (), event, snap);
 344 }
 345
 346 frameoffset_t
 347 Drag::snap_delta (guint state) const
 348 {
 349         if (ArdourKeyboard::indicates_snap_delta (state)) {
 350                 return _snap_delta;
 351         }
 352
 353         return 0;
 354 }
 355
 356 double
 357 Drag::current_pointer_x() const
 358 {
 359         return _drags->current_pointer_x ();
 360 }
 361
 362 double
 363 Drag::current_pointer_y () const
 364 {
 365         if (!_trackview_only) {
 366                 return _drags->current_pointer_y ();
 367         }
 368
 369         return _drags->current_pointer_y () - _editor->get_trackview_group()->canvas_origin().y;
 370 }
 371
 372 void
 373 Drag::setup_snap_delta (framepos_t pos)
 374 {
 375         framepos_t temp = pos;
 376         _editor->snap_to (temp, ARDOUR::RoundNearest, false, true);
 377         _snap_delta = temp - pos;
 378 }
 379
 380 bool
 381 Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 382 {
 383         /* check to see if we have moved in any way that matters since the last motion event */
 384         if (_move_threshold_passed &&
 385             (!x_movement_matters() || _last_pointer_x == current_pointer_x ()) &&
 386             (!y_movement_matters() || _last_pointer_y == current_pointer_y ()) ) {
 387                 return false;
 388         }
 389
 390         pair<framecnt_t, int> const threshold = move_threshold ();
 391
 392         bool const old_move_threshold_passed = _move_threshold_passed;
 393
 394         if (!_move_threshold_passed) {
 395
 396                 bool const xp = (::llabs (_drags->current_pointer_frame () - _raw_grab_frame) >= threshold.first);
 397                 bool const yp = (::fabs ((current_pointer_y () - _grab_y)) >= threshold.second);
 398
 399                 _move_threshold_passed = ((xp && x_movement_matters()) || (yp && y_movement_matters()));
 400         }
 401
 402         if (active (_editor->mouse_mode) && _move_threshold_passed) {
 403
 404                 if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
 405
 406                         if (old_move_threshold_passed != _move_threshold_passed) {
 407
 408                                 /* just changed */
 409
 410                                 if (fabs (current_pointer_y() - _grab_y) > fabs (current_pointer_x() - _grab_x)) {
 411                                         _initially_vertical = true;
 412                                 } else {
 413                                         _initially_vertical = false;
 414                                 }
 415                                 /** check constraints for this drag.
 416                                  *  Note that the current convention is to use "contains" for
 417                                  *  key modifiers during motion and "equals" when initiating a drag.
 418                                  *  In this case we haven't moved yet, so "equals" applies here.
 419                                  */
 420                                 if (Config->get_edit_mode() != Lock) {
 421                                         if (event->motion.state & Gdk::BUTTON2_MASK) {
 422                                                 // if dragging with button2, the motion is x constrained, with constraint modifier it is y constrained
 423                                                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 424                                                         _x_constrained = false;
 425                                                         _y_constrained = true;
 426                                                 } else {
 427                                                         _x_constrained = true;
 428                                                         _y_constrained = false;
 429                                                 }
 430                                         } else if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
 431                                                 // if dragging normally, the motion is constrained to the first direction of movement.
 432                                                 if (_initially_vertical) {
 433                                                         _x_constrained = true;
 434                                                         _y_constrained = false;
 435                                                 } else {
 436                                                         _x_constrained = false;
 437                                                         _y_constrained = true;
 438                                                 }
 439                                         }
 440                                 } else {
 441                                         if (event->button.state & Gdk::BUTTON2_MASK) {
 442                                                 _x_constrained = false;
 443                                         } else {
 444                                                 _x_constrained = true;
 445                                         }
 446                                         _y_constrained = false;
 447                                 }
 448                         }
 449
 450                         if (!from_autoscroll) {
 451                                 _editor->maybe_autoscroll (true, allow_vertical_autoscroll (), false);
 452                         }
 453
 454                         if (!_editor->autoscroll_active() || from_autoscroll) {
 455
 456
 457                                 bool first_move = (_move_threshold_passed != old_move_threshold_passed) || from_autoscroll;
 458
 459                                 motion (event, first_move && !_starting_point_passed);
 460
 461                                 if (first_move && !_starting_point_passed) {
 462                                         _starting_point_passed = true;
 463                                 }
 464
 465                                 _last_pointer_x = _drags->current_pointer_x ();
 466                                 _last_pointer_y = current_pointer_y ();
 467                                 _last_pointer_frame = adjusted_current_frame (event, false);
 468                         }
 469
 470                         return true;
 471                 }
 472         }
 473
 474         return false;
 475 }
 476
 477 /** Call to abort a drag.  Ungrabs item and calls subclass's aborted () */
 478 void
 479 Drag::abort ()
 480 {
 481         if (_item) {
 482                 _item->ungrab ();
 483         }
 484
 485         aborted (_move_threshold_passed);
 486
 487         _editor->stop_canvas_autoscroll ();
 488         _editor->verbose_cursor()->hide ();
 489 }
 490
 491 void
 492 Drag::show_verbose_cursor_time (framepos_t frame)
 493 {
 494         _editor->verbose_cursor()->set_time (frame);
 495         _editor->verbose_cursor()->show ();
 496 }
 497
 498 void
 499 Drag::show_verbose_cursor_duration (framepos_t start, framepos_t end, double /*xoffset*/)
 500 {
 501         _editor->verbose_cursor()->set_duration (start, end);
 502         _editor->verbose_cursor()->show ();
 503 }
 504
 505 void
 506 Drag::show_verbose_cursor_text (string const & text)
 507 {
 508         _editor->verbose_cursor()->set (text);
 509         _editor->verbose_cursor()->show ();
 510 }
 511
 512 boost::shared_ptr<Region>
 513 Drag::add_midi_region (MidiTimeAxisView* view, bool commit)
 514 {
 515         if (_editor->session()) {
 516                 const TempoMap& map (_editor->session()->tempo_map());
 517                 framecnt_t pos = grab_frame();
 518                 /* not that the frame rate used here can be affected by pull up/down which
 519                    might be wrong.
 520                 */
 521                 framecnt_t len = map.frame_at_beat (map.beat_at_frame (pos) + 1.0) - pos;
 522                 return view->add_region (grab_frame(), len, commit);
 523         }
 524
 525         return boost::shared_ptr<Region>();
 526 }
 527
 528 struct EditorOrderTimeAxisViewSorter {
 529         bool operator() (TimeAxisView* a, TimeAxisView* b) {
 530                 RouteTimeAxisView* ra = dynamic_cast<RouteTimeAxisView*> (a);
 531                 RouteTimeAxisView* rb = dynamic_cast<RouteTimeAxisView*> (b);
 532                 assert (ra && rb);
 533                 return ra->route()->order_key () < rb->route()->order_key ();
 534         }
 535 };
 536
 537 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 538         : Drag (e, i)
 539         , _primary (p)
 540         , _ntracks (0)
 541 {
 542         _editor->visible_order_range (&_visible_y_low, &_visible_y_high);
 543
 544         /* Make a list of tracks to refer to during the drag; we include hidden tracks,
 545            as some of the regions we are dragging may be on such tracks.
 546         */
 547
 548         TrackViewList track_views = _editor->track_views;
 549         track_views.sort (EditorOrderTimeAxisViewSorter ());
 550
 551         for (TrackViewList::iterator i = track_views.begin(); i != track_views.end(); ++i) {
 552                 _time_axis_views.push_back (*i);
 553
 554                 TimeAxisView::Children children_list = (*i)->get_child_list ();
 555                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 556                         _time_axis_views.push_back (j->get());
 557                 }
 558         }
 559
 560         /* the list of views can be empty at this point if this is a region list-insert drag
 561          */
 562
 563         for (list<RegionView*>::const_iterator i = v.begin(); i != v.end(); ++i) {
 564                 _views.push_back (DraggingView (*i, this, &(*i)->get_time_axis_view()));
 565         }
 566
 567         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), boost::bind (&RegionDrag::region_going_away, this, _1), gui_context());
 568 }
 569
 570 void
 571 RegionDrag::region_going_away (RegionView* v)
 572 {
 573         list<DraggingView>::iterator i = _views.begin ();
 574         while (i != _views.end() && i->view != v) {
 575                 ++i;
 576         }
 577
 578         if (i != _views.end()) {
 579                 _views.erase (i);
 580         }
 581 }
 582
 583 /** Given a TimeAxisView, return the index of it into the _time_axis_views vector,
 584  *  or -1 if it is not found.
 585  */
 586 int
 587 RegionDrag::find_time_axis_view (TimeAxisView* t) const
 588 {
 589         int i = 0;
 590         int const N = _time_axis_views.size ();
 591         while (i < N && _time_axis_views[i] != t) {
 592                 ++i;
 593         }
 594
 595         if (_time_axis_views[i] != t) {
 596                 return -1;
 597         }
 598
 599         return i;
 600 }
 601
 602 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 603         : RegionDrag (e, i, p, v)
 604         , _brushing (b)
 605         , _ignore_video_lock (false)
 606         , _total_x_delta (0)
 607         , _last_pointer_time_axis_view (0)
 608         , _last_pointer_layer (0)
 609         , _ndropzone (0)
 610         , _pdropzone (0)
 611         , _ddropzone (0)
 612 {
 613         DEBUG_TRACE (DEBUG::Drags, "New RegionMotionDrag\n");
 614 }
 615
 616 void
 617 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
 618 {
 619         Drag::start_grab (event, cursor);
 620         setup_snap_delta (_last_frame_position);
 621
 622         show_verbose_cursor_time (_last_frame_position);
 623
 624         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (current_pointer_y ());
 625         if (tv.first) {
 626                 _last_pointer_time_axis_view = find_time_axis_view (tv.first);
 627                 assert(_last_pointer_time_axis_view >= 0);
 628                 _last_pointer_layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
 629         }
 630
 631         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
 632                 _ignore_video_lock = true;
 633         }
 634
 635         if (_brushing) {
 636                 /* cross track dragging seems broken here. disabled for now. */
 637                 _y_constrained = true;
 638         }
 639 }
 640
 641 double
 642 RegionMotionDrag::compute_x_delta (GdkEvent const * event, framepos_t* pending_region_position)
 643 {
 644         /* compute the amount of pointer motion in frames, and where
 645            the region would be if we moved it by that much.
 646         */
 647         *pending_region_position = adjusted_frame (_drags->current_pointer_frame (), event, false);
 648
 649         framepos_t sync_frame;
 650         framecnt_t sync_offset;
 651         int32_t sync_dir;
 652
 653         sync_offset = _primary->region()->sync_offset (sync_dir);
 654
 655         /* we don't handle a sync point that lies before zero.
 656          */
 657         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 658
 659                 framecnt_t const sd = snap_delta (event->button.state);
 660                 sync_frame = *pending_region_position + (sync_dir * sync_offset) + sd;
 661
 662                 _editor->snap_to_with_modifier (sync_frame, event);
 663
 664                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame) - sd;
 665
 666         } else {
 667                 *pending_region_position = _last_frame_position;
 668         }
 669
 670         if (*pending_region_position > max_framepos - _primary->region()->length()) {
 671                 *pending_region_position = _last_frame_position;
 672         }
 673
 674         double dx = 0;
 675
 676         bool const x_move_allowed = !_x_constrained;
 677
 678         if ((*pending_region_position != _last_frame_position) && x_move_allowed) {
 679
 680                 /* x movement since last time (in pixels) */
 681                 dx = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->samples_per_pixel;
 682
 683                 /* total x movement */
 684                 framecnt_t total_dx = *pending_region_position;
 685                 if (regions_came_from_canvas()) {
 686                         total_dx = total_dx - grab_frame ();
 687                 }
 688
 689                 /* check that no regions have gone off the start of the session */
 690                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 691                         if ((i->view->region()->position() + total_dx) < 0) {
 692                                 dx = 0;
 693                                 *pending_region_position = _last_frame_position;
 694                                 break;
 695                         }
 696                 }
 697
 698         }
 699
 700         return dx;
 701 }
 702
 703 int
 704 RegionDrag::apply_track_delta (const int start, const int delta, const int skip, const bool distance_only) const
 705 {
 706         if (delta == 0) {
 707                 return start;
 708         }
 709
 710         const int tavsize  = _time_axis_views.size();
 711         const int dt = delta > 0 ? +1 : -1;
 712         int current  = start;
 713         int target   = start + delta - skip;
 714
 715         assert (current < 0 || current >= tavsize || !_time_axis_views[current]->hidden());
 716         assert (skip == 0 || (skip < 0 && delta < 0) || (skip > 0 && delta > 0));
 717
 718         while (current >= 0 && current != target) {
 719                 current += dt;
 720                 if (current < 0 && dt < 0) {
 721                         break;
 722                 }
 723                 if (current >= tavsize && dt > 0) {
 724                         break;
 725                 }
 726                 if (current < 0 || current >= tavsize) {
 727                         continue;
 728                 }
 729
 730                 RouteTimeAxisView const * rtav = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[current]);
 731                 if (_time_axis_views[current]->hidden() || !rtav || !rtav->is_track()) {
 732                         target += dt;
 733                 }
 734
 735                 if (distance_only && current == start + delta) {
 736                         break;
 737                 }
 738         }
 739         return target;
 740 }
 741
 742 bool
 743 RegionMotionDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
 744 {
 745         if (_y_constrained) {
 746                 return false;
 747         }
 748
 749         const int tavsize  = _time_axis_views.size();
 750         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 751                 int n = apply_track_delta (i->time_axis_view, delta_track, skip_invisible);
 752                 assert (n < 0 || n >= tavsize || !_time_axis_views[n]->hidden());
 753
 754                 if (i->time_axis_view < 0 || i->time_axis_view >= tavsize) {
 755                         /* already in the drop zone */
 756                         if (delta_track >= 0) {
 757                                 /* downward motion - OK if others are still not in the dropzone */
 758                                 continue;
 759                         }
 760
 761                 }
 762
 763                 if (n < 0) {
 764                         /* off the top */
 765                         return false;
 766                 } else if (n >= tavsize) {
 767                         /* downward motion into drop zone. That's fine. */
 768                         continue;
 769                 }
 770
 771                 RouteTimeAxisView const * to = dynamic_cast<RouteTimeAxisView const *> (_time_axis_views[n]);
 772                 if (to == 0 || to->hidden() || !to->is_track() || to->track()->data_type() != i->view->region()->data_type()) {
 773                         /* not a track, or the wrong type */
 774                         return false;
 775                 }
 776
 777                 double const l = i->layer + delta_layer;
 778
 779                 /* Note that we allow layer to be up to 0.5 below zero, as this is used by `Expanded'
 780                    mode to allow the user to place a region below another on layer 0.
 781                 */
 782                 if (delta_track == 0 && (l < -0.5 || l >= int (to->view()->layers()))) {
 783                         /* Off the top or bottom layer; note that we only refuse if the track hasn't changed.
 784                            If it has, the layers will be munged later anyway, so it's ok.
 785                         */
 786                         return false;
 787                 }
 788         }
 789
 790         /* all regions being dragged are ok with this change */
 791         return true;
 792 }
 793
 794 struct DraggingViewSorter {
 795         bool operator() (const DraggingView& a, const DraggingView& b) {
 796                 return a.time_axis_view < b.time_axis_view;
 797         }
 798 };
 799
 800 void
 801 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 802 {
 803         double delta_layer = 0;
 804         int delta_time_axis_view = 0;
 805         int current_pointer_time_axis_view = -1;
 806
 807         assert (!_views.empty ());
 808
 809         /* Note: time axis views in this method are often expressed as an index into the _time_axis_views vector */
 810
 811         /* Find the TimeAxisView that the pointer is now over */
 812         const double cur_y = current_pointer_y ();
 813         pair<TimeAxisView*, double> const r = _editor->trackview_by_y_position (cur_y);
 814         TimeAxisView* tv = r.first;
 815
 816         if (!tv && cur_y < 0) {
 817                 /* above trackview area, autoscroll hasn't moved us since last time, nothing to do */
 818                 return;
 819         }
 820
 821         /* find drop-zone y-position */
 822         Coord last_track_bottom_edge;
 823         last_track_bottom_edge = 0;
 824         for (std::vector<TimeAxisView*>::reverse_iterator t = _time_axis_views.rbegin(); t != _time_axis_views.rend(); ++t) {
 825                 if (!(*t)->hidden()) {
 826                         last_track_bottom_edge = (*t)->canvas_display()->canvas_origin ().y + (*t)->effective_height();
 827                         break;
 828                 }
 829         }
 830
 831         if (tv && tv->view()) {
 832                 /* the mouse is over a track */
 833                 double layer = r.second;
 834
 835                 if (first_move && tv->view()->layer_display() == Stacked) {
 836                         tv->view()->set_layer_display (Expanded);
 837                 }
 838
 839                 /* Here's the current pointer position in terms of time axis view and layer */
 840                 current_pointer_time_axis_view = find_time_axis_view (tv);
 841                 assert(current_pointer_time_axis_view >= 0);
 842
 843                 double const current_pointer_layer = tv->layer_display() == Overlaid ? 0 : layer;
 844
 845                 /* Work out the change in y */
 846
 847                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
 848                 if (!rtv || !rtv->is_track()) {
 849                         /* ignore busses early on. we can't move any regions on them */
 850                 } else if (_last_pointer_time_axis_view < 0) {
 851                         /* Was in the drop-zone, now over a track.
 852                          * Hence it must be an upward move (from the bottom)
 853                          *
 854                          * track_index is still -1, so delta must be set to
 855                          * move up the correct number of tracks from the bottom.
 856                          *
 857                          * This is necessary because steps may be skipped if
 858                          * the bottom-most track is not a valid target and/or
 859                          * if there are hidden tracks at the bottom.
 860                          * Hence the initial offset (_ddropzone) as well as the
 861                          * last valid pointer position (_pdropzone) need to be
 862                          * taken into account.
 863                          */
 864                         delta_time_axis_view = current_pointer_time_axis_view - _time_axis_views.size () + _ddropzone - _pdropzone;
 865                 } else {
 866                         delta_time_axis_view = current_pointer_time_axis_view - _last_pointer_time_axis_view;
 867                 }
 868
 869                 /* TODO needs adjustment per DraggingView,
 870                  *
 871                  * e.g. select one region on the top-layer of a track
 872                  * and one region which is at the bottom-layer of another track
 873                  * drag both.
 874                  *
 875                  * Indicated drop-zones and layering is wrong.
 876                  * and may infer additional layers on the target-track
 877                  * (depending how many layers the original track had).
 878                  *
 879                  * Or select two regions (different layers) on a same track,
 880                  * move across a non-layer track.. -> layering info is lost.
 881                  * on drop either of the regions may be on top.
 882                  *
 883                  * Proposed solution: screw it :) well,
 884                  *   don't use delta_layer, use an absolute value
 885                  *   1) remember DraggingView's layer  as float 0..1  [current layer / all layers of source]
 886                  *   2) calculate current mouse pos, y-pos inside track divided by height of mouse-over track.
 887                  *   3) iterate over all DraggingView, find the one that is over the track with most layers
 888                  *   4) proportionally scale layer to layers available on target
 889                  */
 890                 delta_layer = current_pointer_layer - _last_pointer_layer;
 891
 892         }
 893         /* for automation lanes, there is a TimeAxisView but no ->view()
 894          * if (!tv) -> dropzone
 895          */
 896         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view >= 0) {
 897                 /* Moving into the drop-zone.. */
 898                 delta_time_axis_view = _time_axis_views.size () - _last_pointer_time_axis_view;
 899                 /* delta_time_axis_view may not be sufficient to move into the DZ
 900                  * the mouse may enter it, but it may not be a valid move due to
 901                  * constraints.
 902                  *
 903                  * -> remember the delta needed to move into the dropzone
 904                  */
 905                 _ddropzone = delta_time_axis_view;
 906                 /* ..but subtract hidden tracks (or routes) at the bottom.
 907                  * we silently move mover them
 908                  */
 909                 _ddropzone -= apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 910                               - _time_axis_views.size();
 911         }
 912         else if (!tv && cur_y >= 0 && _last_pointer_time_axis_view < 0) {
 913                 /* move around inside the zone.
 914                  * This allows to move further down until all regions are in the zone.
 915                  */
 916                 const double ptr_y = cur_y + _editor->get_trackview_group()->canvas_origin().y;
 917                 assert(ptr_y >= last_track_bottom_edge);
 918                 assert(_ddropzone > 0);
 919
 920                 /* calculate mouse position in 'tracks' below last track. */
 921                 const double dzi_h = TimeAxisView::preset_height (HeightNormal);
 922                 uint32_t dzpos = _ddropzone + floor((1 + ptr_y - last_track_bottom_edge) / dzi_h);
 923
 924                 if (dzpos > _pdropzone && _ndropzone < _ntracks) {
 925                         // move further down
 926                         delta_time_axis_view =  dzpos - _pdropzone;
 927                 } else if (dzpos < _pdropzone && _ndropzone > 0) {
 928                         // move up inside the DZ
 929                         delta_time_axis_view =  dzpos - _pdropzone;
 930                 }
 931         }
 932
 933         /* Work out the change in x */
 934         framepos_t pending_region_position;
 935         double const x_delta = compute_x_delta (event, &pending_region_position);
 936         _last_frame_position = pending_region_position;
 937
 938         /* calculate hidden tracks in current y-axis delta */
 939         int delta_skip = 0;
 940         if (_last_pointer_time_axis_view < 0 && _pdropzone > 0) {
 941                 /* The mouse is more than one track below the dropzone.
 942                  * distance calculation is not needed (and would not work, either
 943                  * because the dropzone is "packed").
 944                  *
 945                  * Except when [partially] moving regions out of dropzone in a large step.
 946                  * (the mouse may or may not remain in the DZ)
 947                  * Hidden tracks at the bottom of the TAV need to be skipped.
 948                  *
 949                  * This also handles the case if the mouse entered the DZ
 950                  * in a large step (exessive delta), either due to fast-movement,
 951                  * autoscroll, laggy UI. _ddropzone copensates for that (see "move into dz" above)
 952                  */
 953                 if (delta_time_axis_view < 0 && (int)_ddropzone - delta_time_axis_view >= (int)_pdropzone) {
 954                         const int dt = delta_time_axis_view + (int)_pdropzone - (int)_ddropzone;
 955                         assert(dt <= 0);
 956                         delta_skip = apply_track_delta(_time_axis_views.size(), dt, 0, true)
 957                                 -_time_axis_views.size() - dt;
 958                 }
 959         }
 960         else if (_last_pointer_time_axis_view < 0) {
 961                 /* Moving out of the zone. Check for hidden tracks at the bottom. */
 962                 delta_skip = apply_track_delta(_time_axis_views.size(), delta_time_axis_view, 0, true)
 963                              -_time_axis_views.size() - delta_time_axis_view;
 964         } else {
 965                 /* calculate hidden tracks that are skipped by the pointer movement */
 966                 delta_skip = apply_track_delta(_last_pointer_time_axis_view, delta_time_axis_view, 0, true)
 967                              - _last_pointer_time_axis_view
 968                              - delta_time_axis_view;
 969         }
 970
 971         /* Verify change in y */
 972         if (!y_movement_allowed (delta_time_axis_view, delta_layer, delta_skip)) {
 973                 /* this y movement is not allowed, so do no y movement this time */
 974                 delta_time_axis_view = 0;
 975                 delta_layer = 0;
 976                 delta_skip = 0;
 977         }
 978
 979         if (x_delta == 0 && (tv && tv->view() && delta_time_axis_view == 0) && delta_layer == 0 && !first_move) {
 980                 /* haven't reached next snap point, and we're not switching
 981                    trackviews nor layers. nothing to do.
 982                 */
 983                 return;
 984         }
 985
 986         typedef map<boost::shared_ptr<Playlist>, double> PlaylistDropzoneMap;
 987         PlaylistDropzoneMap playlist_dropzone_map;
 988         _ndropzone = 0; // number of elements currently in the dropzone
 989
 990         if (first_move) {
 991                 /* sort views by time_axis.
 992                  * This retains track order in the dropzone, regardless
 993                  * of actual selection order
 994                  */
 995                 _views.sort (DraggingViewSorter());
 996
 997                 /* count number of distinct tracks of all regions
 998                  * being dragged, used for dropzone.
 999                  */
1000                 int prev_track = -1;
1001                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1002                         if (i->time_axis_view != prev_track) {
1003                                 prev_track = i->time_axis_view;
1004                                 ++_ntracks;
1005                         }
1006                 }
1007 #ifndef NDEBUG
1008                 int spread =
1009                         _views.back().time_axis_view -
1010                         _views.front().time_axis_view;
1011
1012                 spread -= apply_track_delta (_views.front().time_axis_view, spread, 0, true)
1013                           -  _views.back().time_axis_view;
1014
1015                 printf("Dragging region(s) from %d different track(s), max dist: %d\n", _ntracks, spread);
1016 #endif
1017         }
1018
1019         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1020
1021                 RegionView* rv = i->view;
1022                 double y_delta;
1023
1024                 y_delta = 0;
1025
1026                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1027                         continue;
1028                 }
1029
1030                 if (first_move) {
1031                         rv->drag_start ();
1032
1033                         /* reparent the regionview into a group above all
1034                          * others
1035                          */
1036
1037                         ArdourCanvas::Item* rvg = rv->get_canvas_group();
1038                         Duple rv_canvas_offset = rvg->parent()->canvas_origin ();
1039                         Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
1040                         rv->get_canvas_group()->reparent (_editor->_drag_motion_group);
1041                         /* move the item so that it continues to appear at the
1042                            same location now that its parent has changed.
1043                            */
1044                         rvg->move (rv_canvas_offset - dmg_canvas_offset);
1045                 }
1046
1047                 /* If we have moved tracks, we'll fudge the layer delta so that the
1048                    region gets moved back onto layer 0 on its new track; this avoids
1049                    confusion when dragging regions from non-zero layers onto different
1050                    tracks.
1051                 */
1052                 double this_delta_layer = delta_layer;
1053                 if (delta_time_axis_view != 0) {
1054                         this_delta_layer = - i->layer;
1055                 }
1056
1057                 int this_delta_time_axis_view = apply_track_delta(i->time_axis_view, delta_time_axis_view, delta_skip) - i->time_axis_view;
1058
1059                 int track_index = i->time_axis_view + this_delta_time_axis_view;
1060                 assert(track_index >= 0);
1061
1062                 if (track_index < 0 || track_index >= (int) _time_axis_views.size()) {
1063                         /* Track is in the Dropzone */
1064
1065                         i->time_axis_view = track_index;
1066                         assert(i->time_axis_view >= (int) _time_axis_views.size());
1067                         if (cur_y >= 0) {
1068
1069                                 double yposition = 0;
1070                                 PlaylistDropzoneMap::iterator pdz = playlist_dropzone_map.find (i->view->region()->playlist());
1071                                 rv->set_height (TimeAxisView::preset_height (HeightNormal));
1072                                 ++_ndropzone;
1073
1074                                 /* store index of each new playlist as a negative count, starting at -1 */
1075
1076                                 if (pdz == playlist_dropzone_map.end()) {
1077                                         /* compute where this new track (which doesn't exist yet) will live
1078                                            on the y-axis.
1079                                         */
1080                                         yposition = last_track_bottom_edge; /* where to place the top edge of the regionview */
1081
1082                                         /* How high is this region view ? */
1083
1084                                         boost::optional<ArdourCanvas::Rect> obbox = rv->get_canvas_group()->bounding_box ();
1085                                         ArdourCanvas::Rect bbox;
1086
1087                                         if (obbox) {
1088                                                 bbox = obbox.get ();
1089                                         }
1090
1091                                         last_track_bottom_edge += bbox.height();
1092
1093                                         playlist_dropzone_map.insert (make_pair (i->view->region()->playlist(), yposition));
1094
1095                                 } else {
1096                                         yposition = pdz->second;
1097                                 }
1098
1099                                 /* values are zero or negative, hence the use of min() */
1100                                 y_delta = yposition - rv->get_canvas_group()->canvas_origin().y;
1101                         }
1102
1103                 } else {
1104
1105                         /* The TimeAxisView that this region is now over */
1106                         TimeAxisView* current_tv = _time_axis_views[track_index];
1107
1108                         /* Ensure it is moved from stacked -> expanded if appropriate */
1109                         if (current_tv->view()->layer_display() == Stacked) {
1110                                 current_tv->view()->set_layer_display (Expanded);
1111                         }
1112
1113                         /* We're only allowed to go -ve in layer on Expanded views */
1114                         if (current_tv->view()->layer_display() != Expanded && (i->layer + this_delta_layer) < 0) {
1115                                 this_delta_layer = - i->layer;
1116                         }
1117
1118                         /* Set height */
1119                         rv->set_height (current_tv->view()->child_height ());
1120
1121                         /* Update show/hidden status as the region view may have come from a hidden track,
1122                            or have moved to one.
1123                         */
1124                         if (current_tv->hidden ()) {
1125                                 rv->get_canvas_group()->hide ();
1126                         } else {
1127                                 rv->get_canvas_group()->show ();
1128                         }
1129
1130                         /* Update the DraggingView */
1131                         i->time_axis_view = track_index;
1132                         i->layer += this_delta_layer;
1133
1134                         if (_brushing) {
1135                                 _editor->mouse_brush_insert_region (rv, pending_region_position);
1136                         } else {
1137                                 Duple track_origin;
1138
1139                                 /* Get the y coordinate of the top of the track that this region is now over */
1140                                 track_origin = current_tv->canvas_display()->item_to_canvas (track_origin);
1141
1142                                 /* And adjust for the layer that it should be on */
1143                                 StreamView* cv = current_tv->view ();
1144                                 switch (cv->layer_display ()) {
1145                                 case Overlaid:
1146                                         break;
1147                                 case Stacked:
1148                                         track_origin.y += (cv->layers() - i->layer - 1) * cv->child_height ();
1149                                         break;
1150                                 case Expanded:
1151                                         track_origin.y += (cv->layers() - i->layer - 0.5) * 2 * cv->child_height ();
1152                                         break;
1153                                 }
1154
1155                                 /* need to get the parent of the regionview
1156                                  * canvas group and get its position in
1157                                  * equivalent coordinate space as the trackview
1158                                  * we are now dragging over.
1159                                  */
1160
1161                                 y_delta = track_origin.y - rv->get_canvas_group()->canvas_origin().y;
1162
1163                         }
1164                 }
1165
1166                 /* Now move the region view */
1167                 rv->move (x_delta, y_delta);
1168
1169         } /* foreach region */
1170
1171         _total_x_delta += x_delta;
1172
1173         if (x_delta != 0 && !_brushing) {
1174                 show_verbose_cursor_time (_last_frame_position);
1175         }
1176
1177         /* keep track of pointer movement */
1178         if (tv) {
1179                 /* the pointer is currently over a time axis view */
1180
1181                 if (_last_pointer_time_axis_view < 0) {
1182                         /* last motion event was not over a time axis view
1183                          * or last y-movement out of the dropzone was not valid
1184                          */
1185                         int dtz = 0;
1186                         if (delta_time_axis_view < 0) {
1187                                 /* in the drop zone, moving up */
1188
1189                                 /* _pdropzone is the last known pointer y-axis position inside the DZ.
1190                                  * We do not use negative _last_pointer_time_axis_view because
1191                                  * the dropzone is "packed" (the actual track offset is ignored)
1192                                  *
1193                                  * As opposed to the actual number
1194                                  * of elements in the dropzone (_ndropzone)
1195                                  * _pdropzone is not constrained. This is necessary
1196                                  * to allow moving multiple regions with y-distance
1197                                  * into the DZ.
1198                                  *
1199                                  * There can be 0 elements in the dropzone,
1200                                  * even though the drag-pointer is inside the DZ.
1201                                  *
1202                                  * example:
1203                                  * [ Audio-track, Midi-track, Audio-track, DZ ]
1204                                  * move regions from both audio tracks at the same time into the
1205                                  * DZ by grabbing the region in the bottom track.
1206                                  */
1207                                 assert(current_pointer_time_axis_view >= 0);
1208                                 dtz = std::min((int)_pdropzone, (int)_ddropzone - delta_time_axis_view);
1209                                 _pdropzone -= dtz;
1210                         }
1211
1212                         /* only move out of the zone if the movement is OK */
1213                         if (_pdropzone == 0 && delta_time_axis_view != 0) {
1214                                 assert(delta_time_axis_view < 0);
1215                                 _last_pointer_time_axis_view = current_pointer_time_axis_view;
1216                                 /* if all logic and maths are correct, there is no need to assign the 'current' pointer.
1217                                  * the current position can be calculated as follows:
1218                                  */
1219                                 // a well placed oofus attack can still throw this off.
1220                                 // likley auto-scroll related, printf() debugging may tell, commented out for now.
1221                                 //assert (current_pointer_time_axis_view == _time_axis_views.size() - dtz + _ddropzone + delta_time_axis_view);
1222                         }
1223                 } else {
1224                         /* last motion event was also over a time axis view */
1225                         _last_pointer_time_axis_view += delta_time_axis_view;
1226                         assert(_last_pointer_time_axis_view >= 0);
1227                 }
1228
1229         } else {
1230
1231                 /* the pointer is not over a time axis view */
1232                 assert ((delta_time_axis_view > 0) || (((int)_pdropzone) >= (delta_skip - delta_time_axis_view)));
1233                 _pdropzone += delta_time_axis_view - delta_skip;
1234                 _last_pointer_time_axis_view = -1; // <0 : we're in the zone, value does not matter.
1235         }
1236
1237         _last_pointer_layer += delta_layer;
1238 }
1239
1240 void
1241 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
1242 {
1243         if (_copy && first_move) {
1244                 if (_x_constrained && !_brushing) {
1245                         _editor->begin_reversible_command (Operations::fixed_time_region_copy);
1246                 } else if (!_brushing) {
1247                         _editor->begin_reversible_command (Operations::region_copy);
1248                 } else if (_brushing) {
1249                         _editor->begin_reversible_command (Operations::drag_region_brush);
1250                 }
1251                 /* duplicate the regionview(s) and region(s) */
1252
1253                 list<DraggingView> new_regionviews;
1254
1255                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1256
1257                         RegionView* rv = i->view;
1258                         AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1259                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1260
1261                         const boost::shared_ptr<const Region> original = rv->region();
1262                         boost::shared_ptr<Region> region_copy = RegionFactory::create (original, true);
1263                         region_copy->set_position (original->position());
1264                         /* need to set this so that the drop zone code can work. This doesn't
1265                            actually put the region into the playlist, but just sets a weak pointer
1266                            to it.
1267                         */
1268                         region_copy->set_playlist (original->playlist());
1269
1270                         RegionView* nrv;
1271                         if (arv) {
1272                                 boost::shared_ptr<AudioRegion> audioregion_copy
1273                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1274
1275                                 nrv = new AudioRegionView (*arv, audioregion_copy);
1276                         } else if (mrv) {
1277                                 boost::shared_ptr<MidiRegion> midiregion_copy
1278                                         = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1279                                 nrv = new MidiRegionView (*mrv, midiregion_copy);
1280                         } else {
1281                                 continue;
1282                         }
1283
1284                         nrv->get_canvas_group()->show ();
1285                         new_regionviews.push_back (DraggingView (nrv, this, i->initial_time_axis_view));
1286
1287                         /* swap _primary to the copy */
1288
1289                         if (rv == _primary) {
1290                                 _primary = nrv;
1291                         }
1292
1293                         /* ..and deselect the one we copied */
1294
1295                         rv->set_selected (false);
1296                 }
1297
1298                 if (!new_regionviews.empty()) {
1299
1300                         /* reflect the fact that we are dragging the copies */
1301
1302                         _views = new_regionviews;
1303
1304                         swap_grab (new_regionviews.front().view->get_canvas_group (), 0, event ? event->motion.time : 0);
1305                 }
1306
1307         } else if (!_copy && first_move) {
1308                 if (_x_constrained && !_brushing) {
1309                         _editor->begin_reversible_command (_("fixed time region drag"));
1310                 } else if (!_brushing) {
1311                         _editor->begin_reversible_command (Operations::region_drag);
1312                 } else if (_brushing) {
1313                         _editor->begin_reversible_command (Operations::drag_region_brush);
1314                 }
1315         }
1316         RegionMotionDrag::motion (event, first_move);
1317 }
1318
1319 void
1320 RegionMotionDrag::finished (GdkEvent *, bool)
1321 {
1322         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1323                 if (!(*i)->view()) {
1324                         continue;
1325                 }
1326
1327                 if ((*i)->view()->layer_display() == Expanded) {
1328                         (*i)->view()->set_layer_display (Stacked);
1329                 }
1330         }
1331 }
1332
1333 void
1334 RegionMoveDrag::finished (GdkEvent* ev, bool movement_occurred)
1335 {
1336         RegionMotionDrag::finished (ev, movement_occurred);
1337
1338         if (!movement_occurred) {
1339
1340                 /* just a click */
1341
1342                 if (was_double_click() && !_views.empty()) {
1343                         DraggingView dv = _views.front();
1344                         dv.view->show_region_editor ();
1345
1346                 }
1347
1348                 return;
1349         }
1350
1351         assert (!_views.empty ());
1352
1353         /* We might have hidden region views so that they weren't visible during the drag
1354            (when they have been reparented).  Now everything can be shown again, as region
1355            views are back in their track parent groups.
1356         */
1357         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1358                 i->view->get_canvas_group()->show ();
1359         }
1360
1361         bool const changed_position = (_last_frame_position != _primary->region()->position());
1362         bool const changed_tracks = (_time_axis_views[_views.front().time_axis_view] != &_views.front().view->get_time_axis_view());
1363         framecnt_t const drag_delta = _primary->region()->position() - _last_frame_position;
1364
1365         if (_copy) {
1366
1367                 finished_copy (
1368                         changed_position,
1369                         changed_tracks,
1370                         drag_delta
1371                         );
1372
1373         } else {
1374
1375                 finished_no_copy (
1376                         changed_position,
1377                         changed_tracks,
1378                         drag_delta
1379                         );
1380
1381         }
1382
1383         _editor->maybe_locate_with_edit_preroll (_editor->get_selection().regions.start());
1384 }
1385
1386 RouteTimeAxisView*
1387 RegionMoveDrag::create_destination_time_axis (boost::shared_ptr<Region> region, TimeAxisView* original)
1388 {
1389         /* Add a new track of the correct type, and return the RouteTimeAxisView that is created to display the
1390            new track.
1391          */
1392
1393         try {
1394                 if (boost::dynamic_pointer_cast<AudioRegion> (region)) {
1395                         list<boost::shared_ptr<AudioTrack> > audio_tracks;
1396                         uint32_t output_chan = region->n_channels();
1397                         if ((Config->get_output_auto_connect() & AutoConnectMaster) && _editor->session()->master_out()) {
1398                                 output_chan =  _editor->session()->master_out()->n_inputs().n_audio();
1399                         }
1400                         audio_tracks = _editor->session()->new_audio_track (region->n_channels(), output_chan, ARDOUR::Normal, 0, 1, region->name());
1401                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (audio_tracks.front());
1402                         if (rtav) {
1403                                 rtav->set_height (original->current_height());
1404                         }
1405                         return rtav;
1406                 } else {
1407                         ChanCount one_midi_port (DataType::MIDI, 1);
1408                         list<boost::shared_ptr<MidiTrack> > midi_tracks;
1409                         midi_tracks = _editor->session()->new_midi_track (one_midi_port, one_midi_port, boost::shared_ptr<ARDOUR::PluginInfo>(), ARDOUR::Normal, 0, 1, region->name());
1410                         RouteTimeAxisView* rtav = _editor->axis_view_from_route (midi_tracks.front());
1411                         if (rtav) {
1412                                 rtav->set_height (original->current_height());
1413                         }
1414                         return rtav;
1415                 }
1416         } catch (...) {
1417                 error << _("Could not create new track after region placed in the drop zone") << endmsg;
1418                 return 0;
1419         }
1420 }
1421
1422 void
1423 RegionMoveDrag::finished_copy (bool const changed_position, bool const /*changed_tracks*/, framecnt_t const drag_delta)
1424 {
1425         RegionSelection new_views;
1426         PlaylistSet modified_playlists;
1427         RouteTimeAxisView* new_time_axis_view = 0;
1428
1429         if (_brushing) {
1430                 /* all changes were made during motion event handlers */
1431
1432                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
1433                         delete i->view;
1434                 }
1435
1436                 _editor->commit_reversible_command ();
1437                 return;
1438         }
1439
1440         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1441         PlaylistMapping playlist_mapping;
1442
1443         /* insert the regions into their new playlists */
1444         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1445
1446                 RouteTimeAxisView* dest_rtv = 0;
1447
1448                 if (i->view->region()->locked() || (i->view->region()->video_locked() && !_ignore_video_lock)) {
1449                         continue;
1450                 }
1451
1452                 framepos_t where;
1453
1454                 if (changed_position && !_x_constrained) {
1455                         where = i->view->region()->position() - drag_delta;
1456                 } else {
1457                         where = i->view->region()->position();
1458                 }
1459
1460                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1461                         /* dragged to drop zone */
1462
1463                         PlaylistMapping::iterator pm;
1464
1465                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1466                                 /* first region from this original playlist: create a new track */
1467                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1468                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1469                                 dest_rtv = new_time_axis_view;
1470                         } else {
1471                                 /* we already created a new track for regions from this playlist, use it */
1472                                 dest_rtv = pm->second;
1473                         }
1474                 } else {
1475                         /* destination time axis view is the one we dragged to */
1476                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1477                 }
1478
1479                 if (dest_rtv != 0) {
1480                         RegionView* new_view = insert_region_into_playlist (i->view->region(), dest_rtv, i->layer, where, modified_playlists);
1481                         if (new_view != 0) {
1482                                 new_views.push_back (new_view);
1483                         }
1484                 }
1485
1486                 /* Delete the copy of the view that was used for dragging. Need to play safe with the iterator
1487                    since deletion will automagically remove it from _views, thus invalidating i as an iterator.
1488                  */
1489
1490                 list<DraggingView>::const_iterator next = i;
1491                 ++next;
1492                 delete i->view;
1493                 i = next;
1494         }
1495
1496         /* If we've created new regions either by copying or moving
1497            to a new track, we want to replace the old selection with the new ones
1498         */
1499
1500         if (new_views.size() > 0) {
1501                 _editor->selection->set (new_views);
1502         }
1503
1504         /* write commands for the accumulated diffs for all our modified playlists */
1505         add_stateful_diff_commands_for_playlists (modified_playlists);
1506
1507         _editor->commit_reversible_command ();
1508 }
1509
1510 void
1511 RegionMoveDrag::finished_no_copy (
1512         bool const changed_position,
1513         bool const changed_tracks,
1514         framecnt_t const drag_delta
1515         )
1516 {
1517         RegionSelection new_views;
1518         PlaylistSet modified_playlists;
1519         PlaylistSet frozen_playlists;
1520         set<RouteTimeAxisView*> views_to_update;
1521         RouteTimeAxisView* new_time_axis_view = 0;
1522
1523         typedef map<boost::shared_ptr<Playlist>, RouteTimeAxisView*> PlaylistMapping;
1524         PlaylistMapping playlist_mapping;
1525
1526         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ) {
1527
1528                 RegionView* rv = i->view;
1529                 RouteTimeAxisView* dest_rtv = 0;
1530
1531                 if (rv->region()->locked() || (rv->region()->video_locked() && !_ignore_video_lock)) {
1532                         ++i;
1533                         continue;
1534                 }
1535
1536                 if (i->time_axis_view < 0 || i->time_axis_view >= (int)_time_axis_views.size()) {
1537                         /* dragged to drop zone */
1538
1539                         PlaylistMapping::iterator pm;
1540
1541                         if ((pm = playlist_mapping.find (i->view->region()->playlist())) == playlist_mapping.end()) {
1542                                 /* first region from this original playlist: create a new track */
1543                                 new_time_axis_view = create_destination_time_axis (i->view->region(), i->initial_time_axis_view);
1544                                 playlist_mapping.insert (make_pair (i->view->region()->playlist(), new_time_axis_view));
1545                                 dest_rtv = new_time_axis_view;
1546                         } else {
1547                                 /* we already created a new track for regions from this playlist, use it */
1548                                 dest_rtv = pm->second;
1549                         }
1550
1551                 } else {
1552                         /* destination time axis view is the one we dragged to */
1553                         dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[i->time_axis_view]);
1554                 }
1555
1556                 assert (dest_rtv);
1557
1558                 double const dest_layer = i->layer;
1559
1560                 views_to_update.insert (dest_rtv);
1561
1562                 framepos_t where;
1563
1564                 if (changed_position && !_x_constrained) {
1565                         where = rv->region()->position() - drag_delta;
1566                 } else {
1567                         where = rv->region()->position();
1568                 }
1569
1570                 if (changed_tracks) {
1571
1572                         /* insert into new playlist */
1573
1574                         RegionView* new_view = insert_region_into_playlist (
1575                                 RegionFactory::create (rv->region (), true), dest_rtv, dest_layer, where, modified_playlists
1576                                 );
1577
1578                         if (new_view == 0) {
1579                                 ++i;
1580                                 continue;
1581                         }
1582
1583                         new_views.push_back (new_view);
1584
1585                         /* remove from old playlist */
1586
1587                         /* the region that used to be in the old playlist is not
1588                            moved to the new one - we use a copy of it. as a result,
1589                            any existing editor for the region should no longer be
1590                            visible.
1591                         */
1592                         rv->hide_region_editor();
1593
1594
1595                         remove_region_from_playlist (rv->region(), i->initial_playlist, modified_playlists);
1596
1597                 } else {
1598
1599                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1600
1601                         /* this movement may result in a crossfade being modified, or a layering change,
1602                            so we need to get undo data from the playlist as well as the region.
1603                         */
1604
1605                         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (playlist);
1606                         if (r.second) {
1607                                 playlist->clear_changes ();
1608                         }
1609
1610                         rv->region()->clear_changes ();
1611
1612                         /*
1613                            motion on the same track. plonk the previously reparented region
1614                            back to its original canvas group (its streamview).
1615                            No need to do anything for copies as they are fake regions which will be deleted.
1616                         */
1617
1618                         rv->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1619                         rv->get_canvas_group()->set_y_position (i->initial_y);
1620                         rv->drag_end ();
1621
1622                         /* just change the model */
1623                         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1624                                 playlist->set_layer (rv->region(), dest_layer);
1625                         }
1626
1627                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
1628
1629                         r = frozen_playlists.insert (playlist);
1630
1631                         if (r.second) {
1632                                 playlist->freeze ();
1633                         }
1634
1635                         rv->region()->set_position (where);
1636                         _editor->session()->add_command (new StatefulDiffCommand (rv->region()));
1637                 }
1638
1639                 if (changed_tracks) {
1640
1641                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1642                            was selected in all of them, then removing it from a playlist will have removed all
1643                            trace of it from _views (i.e. there were N regions selected, we removed 1,
1644                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1645                            corresponding regionview, and _views is now empty).
1646
1647                            This could have invalidated any and all iterators into _views.
1648
1649                            The heuristic we use here is: if the region selection is empty, break out of the loop
1650                            here. if the region selection is not empty, then restart the loop because we know that
1651                            we must have removed at least the region(view) we've just been working on as well as any
1652                            that we processed on previous iterations.
1653
1654                            EXCEPT .... if we are doing a copy drag, then _views hasn't been modified and
1655                            we can just iterate.
1656                         */
1657
1658
1659                         if (_views.empty()) {
1660                                 break;
1661                         } else {
1662                                 i = _views.begin();
1663                         }
1664
1665                 } else {
1666                         ++i;
1667                 }
1668         }
1669
1670         /* If we've created new regions either by copying or moving
1671            to a new track, we want to replace the old selection with the new ones
1672         */
1673
1674         if (new_views.size() > 0) {
1675                 _editor->selection->set (new_views);
1676         }
1677
1678         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1679                 (*p)->thaw();
1680         }
1681
1682         /* write commands for the accumulated diffs for all our modified playlists */
1683         add_stateful_diff_commands_for_playlists (modified_playlists);
1684         /* applies to _brushing */
1685         _editor->commit_reversible_command ();
1686
1687         /* We have futzed with the layering of canvas items on our streamviews.
1688            If any region changed layer, this will have resulted in the stream
1689            views being asked to set up their region views, and all will be well.
1690            If not, we might now have badly-ordered region views.  Ask the StreamViews
1691            involved to sort themselves out, just in case.
1692         */
1693
1694         for (set<RouteTimeAxisView*>::iterator i = views_to_update.begin(); i != views_to_update.end(); ++i) {
1695                 (*i)->view()->playlist_layered ((*i)->track ());
1696         }
1697 }
1698
1699 /** Remove a region from a playlist, clearing the diff history of the playlist first if necessary.
1700  *  @param region Region to remove.
1701  *  @param playlist playlist To remove from.
1702  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1703  *  that clear_changes () is only called once per playlist.
1704  */
1705 void
1706 RegionMoveDrag::remove_region_from_playlist (
1707         boost::shared_ptr<Region> region,
1708         boost::shared_ptr<Playlist> playlist,
1709         PlaylistSet& modified_playlists
1710         )
1711 {
1712         pair<set<boost::shared_ptr<Playlist> >::iterator, bool> r = modified_playlists.insert (playlist);
1713
1714         if (r.second) {
1715                 playlist->clear_changes ();
1716         }
1717
1718         playlist->remove_region (region); // should be no need to ripple; we better already have rippled the playlist in RegionRippleDrag
1719 }
1720
1721
1722 /** Insert a region into a playlist, handling the recovery of the resulting new RegionView, and
1723  *  clearing the playlist's diff history first if necessary.
1724  *  @param region Region to insert.
1725  *  @param dest_rtv Destination RouteTimeAxisView.
1726  *  @param dest_layer Destination layer.
1727  *  @param where Destination position.
1728  *  @param modified_playlists The playlist will be added to this if it is not there already; used to ensure
1729  *  that clear_changes () is only called once per playlist.
1730  *  @return New RegionView, or 0 if no insert was performed.
1731  */
1732 RegionView *
1733 RegionMoveDrag::insert_region_into_playlist (
1734         boost::shared_ptr<Region> region,
1735         RouteTimeAxisView* dest_rtv,
1736         layer_t dest_layer,
1737         framecnt_t where,
1738         PlaylistSet& modified_playlists
1739         )
1740 {
1741         boost::shared_ptr<Playlist> dest_playlist = dest_rtv->playlist ();
1742         if (!dest_playlist) {
1743                 return 0;
1744         }
1745
1746         /* arrange to collect the new region view that will be created as a result of our playlist insertion */
1747         _new_region_view = 0;
1748         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun (*this, &RegionMoveDrag::collect_new_region_view));
1749
1750         /* clear history for the playlist we are about to insert to, provided we haven't already done so */
1751         pair<PlaylistSet::iterator, bool> r = modified_playlists.insert (dest_playlist);
1752         if (r.second) {
1753                 dest_playlist->clear_changes ();
1754         }
1755
1756         dest_playlist->add_region (region, where);
1757
1758         if (dest_rtv->view()->layer_display() == Stacked || dest_rtv->view()->layer_display() == Expanded) {
1759                 dest_playlist->set_layer (region, dest_layer);
1760         }
1761
1762         c.disconnect ();
1763
1764         assert (_new_region_view);
1765
1766         return _new_region_view;
1767 }
1768
1769 void
1770 RegionMoveDrag::collect_new_region_view (RegionView* rv)
1771 {
1772         _new_region_view = rv;
1773 }
1774
1775 void
1776 RegionMoveDrag::add_stateful_diff_commands_for_playlists (PlaylistSet const & playlists)
1777 {
1778         for (PlaylistSet::const_iterator i = playlists.begin(); i != playlists.end(); ++i) {
1779                 StatefulDiffCommand* c = new StatefulDiffCommand (*i);
1780                 if (!c->empty()) {
1781                         _editor->session()->add_command (c);
1782                 } else {
1783                         delete c;
1784                 }
1785         }
1786 }
1787
1788
1789 void
1790 RegionMoveDrag::aborted (bool movement_occurred)
1791 {
1792         if (_copy) {
1793
1794                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end();) {
1795                         list<DraggingView>::const_iterator next = i;
1796                         ++next;
1797                         delete i->view;
1798                         i = next;
1799                 }
1800
1801                 _views.clear ();
1802
1803         } else {
1804                 RegionMotionDrag::aborted (movement_occurred);
1805         }
1806 }
1807
1808 void
1809 RegionMotionDrag::aborted (bool)
1810 {
1811         for (vector<TimeAxisView*>::iterator i = _time_axis_views.begin(); i != _time_axis_views.end(); ++i) {
1812
1813                 StreamView* sview = (*i)->view();
1814
1815                 if (sview) {
1816                         if (sview->layer_display() == Expanded) {
1817                                 sview->set_layer_display (Stacked);
1818                         }
1819                 }
1820         }
1821
1822         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1823                 RegionView* rv = i->view;
1824                 TimeAxisView* tv = &(rv->get_time_axis_view ());
1825                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1826                 assert (rtv);
1827                 rv->get_canvas_group()->reparent (rtv->view()->canvas_item());
1828                 rv->get_canvas_group()->set_y_position (0);
1829                 rv->drag_end ();
1830                 rv->move (-_total_x_delta, 0);
1831                 rv->set_height (rtv->view()->child_height ());
1832         }
1833 }
1834
1835 /** @param b true to brush, otherwise false.
1836  *  @param c true to make copies of the regions being moved, otherwise false.
1837  */
1838 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1839         : RegionMotionDrag (e, i, p, v, b)
1840         , _copy (c)
1841         , _new_region_view (0)
1842 {
1843         DEBUG_TRACE (DEBUG::Drags, "New RegionMoveDrag\n");
1844
1845         double speed = 1;
1846         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (&_primary->get_time_axis_view ());
1847         if (rtv && rtv->is_track()) {
1848                 speed = rtv->track()->speed ();
1849         }
1850
1851         _last_frame_position = static_cast<framepos_t> (_primary->region()->position() / speed);
1852 }
1853
1854 void
1855 RegionMoveDrag::setup_pointer_frame_offset ()
1856 {
1857         _pointer_frame_offset = raw_grab_frame() - _last_frame_position;
1858 }
1859
1860 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, framepos_t pos)
1861         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1862 {
1863         DEBUG_TRACE (DEBUG::Drags, "New RegionInsertDrag\n");
1864
1865         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1866                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1867
1868         _primary = v->view()->create_region_view (r, false, false);
1869
1870         _primary->get_canvas_group()->show ();
1871         _primary->set_position (pos, 0);
1872         _views.push_back (DraggingView (_primary, this, v));
1873
1874         _last_frame_position = pos;
1875
1876         _item = _primary->get_canvas_group ();
1877 }
1878
1879 void
1880 RegionInsertDrag::finished (GdkEvent *, bool)
1881 {
1882         int pos = _views.front().time_axis_view;
1883         assert(pos >= 0 && pos < (int)_time_axis_views.size());
1884
1885         RouteTimeAxisView* dest_rtv = dynamic_cast<RouteTimeAxisView*> (_time_axis_views[pos]);
1886
1887         _primary->get_canvas_group()->reparent (dest_rtv->view()->canvas_item());
1888         _primary->get_canvas_group()->set_y_position (0);
1889
1890         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1891
1892         _editor->begin_reversible_command (Operations::insert_region);
1893         playlist->clear_changes ();
1894         playlist->add_region (_primary->region (), _last_frame_position);
1895
1896         // Mixbus doesn't seem to ripple when inserting regions from the list: should we? yes, probably
1897         if (Config->get_edit_mode() == Ripple) {
1898                 playlist->ripple (_last_frame_position, _primary->region()->length(), _primary->region());
1899         }
1900
1901         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1902         _editor->commit_reversible_command ();
1903
1904         delete _primary;
1905         _primary = 0;
1906         _views.clear ();
1907 }
1908
1909 void
1910 RegionInsertDrag::aborted (bool)
1911 {
1912         delete _primary;
1913         _primary = 0;
1914         _views.clear ();
1915 }
1916
1917 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1918         : RegionMoveDrag (e, i, p, v, false, false)
1919 {
1920         DEBUG_TRACE (DEBUG::Drags, "New RegionSpliceDrag\n");
1921 }
1922
1923 struct RegionSelectionByPosition {
1924         bool operator() (RegionView*a, RegionView* b) {
1925                 return a->region()->position () < b->region()->position();
1926         }
1927 };
1928
1929 void
1930 RegionSpliceDrag::motion (GdkEvent* event, bool)
1931 {
1932         /* Which trackview is this ? */
1933
1934         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
1935         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1936
1937         /* The region motion is only processed if the pointer is over
1938            an audio track.
1939         */
1940
1941         if (!tv || !tv->is_track()) {
1942                 /* To make sure we hide the verbose canvas cursor when the mouse is
1943                    not held over an audio track.
1944                 */
1945                 _editor->verbose_cursor()->hide ();
1946                 return;
1947         } else {
1948                 _editor->verbose_cursor()->show ();
1949         }
1950
1951         int dir;
1952
1953         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1954                 dir = 1;
1955         } else {
1956                 dir = -1;
1957         }
1958
1959         RegionSelection copy;
1960         _editor->selection->regions.by_position(copy);
1961
1962         framepos_t const pf = adjusted_current_frame (event);
1963
1964         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1965
1966                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1967
1968                 if (!atv) {
1969                         continue;
1970                 }
1971
1972                 boost::shared_ptr<Playlist> playlist;
1973
1974                 if ((playlist = atv->playlist()) == 0) {
1975                         continue;
1976                 }
1977
1978                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1979                         continue;
1980                 }
1981
1982                 if (dir > 0) {
1983                         if (pf < (*i)->region()->last_frame() + 1) {
1984                                 continue;
1985                         }
1986                 } else {
1987                         if (pf > (*i)->region()->first_frame()) {
1988                                 continue;
1989                         }
1990                 }
1991
1992
1993                 playlist->shuffle ((*i)->region(), dir);
1994         }
1995 }
1996
1997 void
1998 RegionSpliceDrag::finished (GdkEvent* event, bool movement_occurred)
1999 {
2000         RegionMoveDrag::finished (event, movement_occurred);
2001 }
2002
2003 void
2004 RegionSpliceDrag::aborted (bool)
2005 {
2006         /* XXX: TODO */
2007 }
2008
2009 /***
2010  * ripple mode...
2011  */
2012
2013 void
2014 RegionRippleDrag::add_all_after_to_views(TimeAxisView *tav, framepos_t where, const RegionSelection &exclude, bool drag_in_progress)
2015 {
2016
2017         boost::shared_ptr<RegionList> rl = tav->playlist()->regions_with_start_within (Evoral::Range<framepos_t>(where, max_framepos));
2018
2019         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*>(tav);
2020         RegionSelection to_ripple;
2021         for (RegionList::iterator i = rl->begin(); i != rl->end(); ++i) {
2022                 if ((*i)->position() >= where) {
2023                         to_ripple.push_back (rtv->view()->find_view(*i));
2024                 }
2025         }
2026
2027         for (RegionSelection::iterator i = to_ripple.begin(); i != to_ripple.end(); ++i) {
2028                 if (!exclude.contains (*i)) {
2029                         // the selection has already been added to _views
2030
2031                         if (drag_in_progress) {
2032                                 // do the same things that RegionMotionDrag::motion does when
2033                                 // first_move is true, for the region views that we're adding
2034                                 // to _views this time
2035
2036                                 (*i)->drag_start();
2037                                 ArdourCanvas::Item* rvg = (*i)->get_canvas_group();
2038                                 Duple rv_canvas_offset = rvg->item_to_canvas (Duple (0,0));
2039                                 Duple dmg_canvas_offset = _editor->_drag_motion_group->canvas_origin ();
2040                                 rvg->reparent (_editor->_drag_motion_group);
2041
2042                                 // we only need to move in the y direction
2043                                 Duple fudge = rv_canvas_offset - dmg_canvas_offset;
2044                                 fudge.x = 0;
2045                                 rvg->move (fudge);
2046
2047                         }
2048                         _views.push_back (DraggingView (*i, this, tav));
2049                 }
2050         }
2051 }
2052
2053 void
2054 RegionRippleDrag::remove_unselected_from_views(framecnt_t amount, bool move_regions)
2055 {
2056
2057         for (std::list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ) {
2058                 // we added all the regions after the selection
2059
2060                 std::list<DraggingView>::iterator to_erase = i++;
2061                 if (!_editor->selection->regions.contains (to_erase->view)) {
2062                         // restore the non-selected regions to their original playlist & positions,
2063                         // and then ripple them back by the length of the regions that were dragged away
2064                         // do the same things as RegionMotionDrag::aborted
2065
2066                         RegionView *rv = to_erase->view;
2067                         TimeAxisView* tv = &(rv->get_time_axis_view ());
2068                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
2069                         assert (rtv);
2070
2071                         // plonk them back onto their own track
2072                         rv->get_canvas_group()->reparent(rtv->view()->canvas_item());
2073                         rv->get_canvas_group()->set_y_position (0);
2074                         rv->drag_end ();
2075
2076                         if (move_regions) {
2077                                 // move the underlying region to match the view
2078                                 rv->region()->set_position (rv->region()->position() + amount);
2079                         } else {
2080                                 // restore the view to match the underlying region's original position
2081                                 rv->move(-amount, 0);   // second parameter is y delta - seems 0 is OK
2082                         }
2083
2084                         rv->set_height (rtv->view()->child_height ());
2085                         _views.erase (to_erase);
2086                 }
2087         }
2088 }
2089
2090 bool
2091 RegionRippleDrag::y_movement_allowed (int delta_track, double delta_layer, int skip_invisible) const
2092 {
2093         if (RegionMotionDrag::y_movement_allowed (delta_track, delta_layer, skip_invisible)) {
2094                 if (delta_track) {
2095                         return allow_moves_across_tracks;
2096                 } else {
2097                         return true;
2098                 }
2099         }
2100         return false;
2101 }
2102
2103 RegionRippleDrag::RegionRippleDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2104         : RegionMoveDrag (e, i, p, v, false, false)
2105 {
2106         DEBUG_TRACE (DEBUG::Drags, "New RegionRippleDrag\n");
2107         // compute length of selection
2108         RegionSelection selected_regions = _editor->selection->regions;
2109         selection_length = selected_regions.end_frame() - selected_regions.start();
2110
2111         // we'll only allow dragging to another track in ripple mode if all the regions
2112         // being dragged start off on the same track
2113         allow_moves_across_tracks = (selected_regions.playlists().size() == 1);
2114         prev_tav = NULL;
2115         prev_amount = 0;
2116         exclude = new RegionList;
2117         for (RegionSelection::iterator i =selected_regions.begin(); i != selected_regions.end(); ++i) {
2118                 exclude->push_back((*i)->region());
2119         }
2120
2121         // also add regions before start of selection to exclude, to be consistent with how Mixbus does ripple
2122         RegionSelection copy;
2123         selected_regions.by_position(copy); // get selected regions sorted by position into copy
2124
2125         std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = copy.playlists();
2126         std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2127
2128         for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2129                 // find ripple start point on each applicable playlist
2130                 RegionView *first_selected_on_this_track = NULL;
2131                 for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
2132                         if ((*i)->region()->playlist() == (*pi)) {
2133                                 // region is on this playlist - it's the first, because they're sorted
2134                                 first_selected_on_this_track = *i;
2135                                 break;
2136                         }
2137                 }
2138                 assert (first_selected_on_this_track); // we should always find the region in one of the playlists...
2139                 add_all_after_to_views (
2140                                 &first_selected_on_this_track->get_time_axis_view(),
2141                                 first_selected_on_this_track->region()->position(),
2142                                 selected_regions, false);
2143         }
2144
2145         if (allow_moves_across_tracks) {
2146                 orig_tav = &(*selected_regions.begin())->get_time_axis_view();
2147         } else {
2148                 orig_tav = NULL;
2149         }
2150
2151 }
2152
2153 void
2154 RegionRippleDrag::motion (GdkEvent* event, bool first_move)
2155 {
2156         /* Which trackview is this ? */
2157
2158         pair<TimeAxisView*, double> const tvp = _editor->trackview_by_y_position (current_pointer_y ());
2159         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
2160
2161         /* The region motion is only processed if the pointer is over
2162            an audio track.
2163          */
2164
2165         if (!tv || !tv->is_track()) {
2166                 /* To make sure we hide the verbose canvas cursor when the mouse is
2167                    not held over an audiotrack.
2168                  */
2169                 _editor->verbose_cursor()->hide ();
2170                 return;
2171         }
2172
2173         framepos_t where = adjusted_current_frame (event);
2174         assert (where >= 0);
2175         framepos_t after;
2176         double delta = compute_x_delta (event, &after);
2177
2178         framecnt_t amount = _editor->pixel_to_sample (delta);
2179
2180         if (allow_moves_across_tracks) {
2181                 // all the originally selected regions were on the same track
2182
2183                 framecnt_t adjust = 0;
2184                 if (prev_tav && tv != prev_tav) {
2185                         // dragged onto a different track
2186                         // remove the unselected regions from _views, restore them to their original positions
2187                         // and add the regions after the drop point on the new playlist to _views instead.
2188                         // undo the effect of rippling the previous playlist, and include the effect of removing
2189                         // the dragged region(s) from this track
2190
2191                         remove_unselected_from_views (prev_amount, false);
2192                         // ripple previous playlist according to the regions that have been removed onto the new playlist
2193                         prev_tav->playlist()->ripple(prev_position, -selection_length, exclude);
2194                         prev_amount = 0;
2195
2196                         // move just the selected regions
2197                         RegionMoveDrag::motion(event, first_move);
2198
2199                         // ensure that the ripple operation on the new playlist inserts selection_length time
2200                         adjust = selection_length;
2201                         // ripple the new current playlist
2202                         tv->playlist()->ripple (where, amount+adjust, exclude);
2203
2204                         // add regions after point where drag entered this track to subsequent ripples
2205                         add_all_after_to_views (tv, where, _editor->selection->regions, true);
2206
2207                 } else {
2208                         // motion on same track
2209                         RegionMoveDrag::motion(event, first_move);
2210                 }
2211                 prev_tav = tv;
2212
2213                 // remember what we've done to this playlist so we can undo it if the selection is dragged to another track
2214                 prev_position = where;
2215         } else {
2216                 // selection encompasses multiple tracks - just drag
2217                 // cross-track drags are forbidden
2218                 RegionMoveDrag::motion(event, first_move);
2219         }
2220
2221         if (!_x_constrained) {
2222                 prev_amount += amount;
2223         }
2224
2225         _last_frame_position = after;
2226 }
2227
2228 void
2229 RegionRippleDrag::finished (GdkEvent* event, bool movement_occurred)
2230 {
2231         if (!movement_occurred) {
2232
2233                 /* just a click */
2234
2235                 if (was_double_click() && !_views.empty()) {
2236                         DraggingView dv = _views.front();
2237                         dv.view->show_region_editor ();
2238
2239                 }
2240
2241                 return;
2242         }
2243
2244         _editor->begin_reversible_command(_("Ripple drag"));
2245
2246         // remove the regions being rippled from the dragging view, updating them to
2247         // their new positions
2248         remove_unselected_from_views (prev_amount, true);
2249
2250         if (allow_moves_across_tracks) {
2251                 if (orig_tav) {
2252                         // if regions were dragged across tracks, we've rippled any later
2253                         // regions on the track the regions were dragged off, so we need
2254                         // to add the original track to the undo record
2255                         orig_tav->playlist()->clear_changes();
2256                         vector<Command*> cmds;
2257                         orig_tav->playlist()->rdiff (cmds);
2258                         _editor->session()->add_commands (cmds);
2259                 }
2260                 if (prev_tav && prev_tav != orig_tav) {
2261                         prev_tav->playlist()->clear_changes();
2262                         vector<Command*> cmds;
2263                         prev_tav->playlist()->rdiff (cmds);
2264                         _editor->session()->add_commands (cmds);
2265                 }
2266         } else {
2267                 // selection spanned multiple tracks - all will need adding to undo record
2268
2269                 std::set<boost::shared_ptr<ARDOUR::Playlist> > playlists = _editor->selection->regions.playlists();
2270                 std::set<boost::shared_ptr<ARDOUR::Playlist> >::const_iterator pi;
2271
2272                 for (pi = playlists.begin(); pi != playlists.end(); ++pi) {
2273                         (*pi)->clear_changes();
2274                         vector<Command*> cmds;
2275                         (*pi)->rdiff (cmds);
2276                         _editor->session()->add_commands (cmds);
2277                 }
2278         }
2279
2280         // other modified playlists are added to undo by RegionMoveDrag::finished()
2281         RegionMoveDrag::finished (event, movement_occurred);
2282         _editor->commit_reversible_command();
2283 }
2284
2285 void
2286 RegionRippleDrag::aborted (bool movement_occurred)
2287 {
2288         RegionMoveDrag::aborted (movement_occurred);
2289         _views.clear ();
2290 }
2291
2292
2293 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
2294         : Drag (e, i),
2295           _view (dynamic_cast<MidiTimeAxisView*> (v))
2296 {
2297         DEBUG_TRACE (DEBUG::Drags, "New RegionCreateDrag\n");
2298
2299         assert (_view);
2300 }
2301
2302 void
2303 RegionCreateDrag::motion (GdkEvent* event, bool first_move)
2304 {
2305         if (first_move) {
2306                 _editor->begin_reversible_command (_("create region"));
2307                 _region = add_midi_region (_view, false);
2308                 _view->playlist()->freeze ();
2309         } else {
2310                 if (_region) {
2311                         framepos_t const f = adjusted_current_frame (event);
2312                         if (f < grab_frame()) {
2313                                 _region->set_initial_position (f);
2314                         }
2315
2316                         /* Don't use a zero-length region, and subtract 1 frame from the snapped length
2317                            so that if this region is duplicated, its duplicate starts on
2318                            a snap point rather than 1 frame after a snap point.  Otherwise things get
2319                            a bit confusing as if a region starts 1 frame after a snap point, one cannot
2320                            place snapped notes at the start of the region.
2321                         */
2322
2323                         framecnt_t const len = (framecnt_t) fabs ((double)(f - grab_frame () - 1));
2324                         _region->set_length (len < 1 ? 1 : len);
2325                 }
2326         }
2327 }
2328
2329 void
2330 RegionCreateDrag::finished (GdkEvent*, bool movement_occurred)
2331 {
2332         if (!movement_occurred) {
2333                 add_midi_region (_view, true);
2334         } else {
2335                 _view->playlist()->thaw ();
2336                 _editor->commit_reversible_command();
2337         }
2338 }
2339
2340 void
2341 RegionCreateDrag::aborted (bool)
2342 {
2343         if (_region) {
2344                 _view->playlist()->thaw ();
2345         }
2346
2347         /* XXX */
2348 }
2349
2350 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
2351         : Drag (e, i)
2352         , region (0)
2353         , relative (false)
2354         , at_front (true)
2355         , _was_selected (false)
2356         , _snap_delta (0)
2357 {
2358         DEBUG_TRACE (DEBUG::Drags, "New NoteResizeDrag\n");
2359 }
2360
2361 void
2362 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*ignored*/)
2363 {
2364         Gdk::Cursor* cursor;
2365         NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2366         assert (cnote);
2367         float x_fraction = cnote->mouse_x_fraction ();
2368
2369         if (x_fraction > 0.0 && x_fraction < 0.25) {
2370                 cursor = _editor->cursors()->left_side_trim;
2371                 at_front = true;
2372         } else  {
2373                 cursor = _editor->cursors()->right_side_trim;
2374                 at_front = false;
2375         }
2376
2377         Drag::start_grab (event, cursor);
2378
2379         region = &cnote->region_view();
2380
2381         double temp;
2382         temp = region->snap_to_pixel (cnote->x0 (), true);
2383         _snap_delta = temp - cnote->x0 ();
2384
2385         _item->grab ();
2386
2387         if (event->motion.state & ArdourKeyboard::note_size_relative_modifier ()) {
2388                 relative = false;
2389         } else {
2390                 relative = true;
2391         }
2392         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2393         if (ms.size() > 1) {
2394                 /* has to be relative, may make no sense otherwise */
2395                 relative = true;
2396         }
2397
2398         if (!(_was_selected = cnote->selected())) {
2399
2400                 /* tertiary-click means extend selection - we'll do that on button release,
2401                    so don't add it here, because otherwise we make it hard to figure
2402                    out the "extend-to" range.
2403                 */
2404
2405                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2406
2407                 if (!extend) {
2408                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2409
2410                         if (add) {
2411                                 region->note_selected (cnote, true);
2412                         } else {
2413                                 _editor->get_selection().clear_points();
2414                                 region->unique_select (cnote);
2415                         }
2416                 }
2417         }
2418 }
2419
2420 void
2421 NoteResizeDrag::motion (GdkEvent* event, bool first_move)
2422 {
2423         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2424         if (first_move) {
2425                 _editor->begin_reversible_command (_("resize notes"));
2426
2427                 for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
2428                         MidiRegionSelection::iterator next;
2429                         next = r;
2430                         ++next;
2431                         MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2432                         if (mrv) {
2433                                 mrv->begin_resizing (at_front);
2434                         }
2435                         r = next;
2436                 }
2437         }
2438
2439         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2440                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2441                 assert (nb);
2442                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2443                 if (mrv) {
2444                         double sd = 0.0;
2445                         bool snap = true;
2446                         bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2447
2448                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2449                                 if (_editor->snap_mode () != SnapOff) {
2450                                         snap = false;
2451                                 }
2452                         } else {
2453                                 if (_editor->snap_mode () == SnapOff) {
2454                                         snap = false;
2455                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2456                                         if (apply_snap_delta) {
2457                                                 snap = true;
2458                                         }
2459                                 }
2460                         }
2461
2462                         if (apply_snap_delta) {
2463                                 sd = _snap_delta;
2464                         }
2465
2466                         mrv->update_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2467                 }
2468         }
2469 }
2470
2471 void
2472 NoteResizeDrag::finished (GdkEvent* event, bool movement_occurred)
2473 {
2474         if (!movement_occurred) {
2475                 /* no motion - select note */
2476                 NoteBase* cnote = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2477                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
2478                     _editor->current_mouse_mode() == Editing::MouseDraw) {
2479
2480                         bool changed = false;
2481
2482                         if (_was_selected) {
2483                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2484                                 if (add) {
2485                                         region->note_deselected (cnote);
2486                                         changed = true;
2487                                 } else {
2488                                         _editor->get_selection().clear_points();
2489                                         region->unique_select (cnote);
2490                                         changed = true;
2491                                 }
2492                         } else {
2493                                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
2494                                 bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
2495
2496                                 if (!extend && !add && region->selection_size() > 1) {
2497                                         _editor->get_selection().clear_points();
2498                                         region->unique_select (cnote);
2499                                         changed = true;
2500                                 } else if (extend) {
2501                                         region->note_selected (cnote, true, true);
2502                                         changed = true;
2503                                 } else {
2504                                         /* it was added during button press */
2505                                         changed = true;
2506                                 }
2507                         }
2508
2509                         if (changed) {
2510                                 _editor->begin_reversible_selection_op(X_("Resize Select Note Release"));
2511                                 _editor->commit_reversible_selection_op();
2512                         }
2513                 }
2514
2515                 return;
2516         }
2517
2518         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2519         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2520                 NoteBase* nb = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
2521                 assert (nb);
2522                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2523                 double sd = 0.0;
2524                 bool snap = true;
2525                 bool apply_snap_delta = ArdourKeyboard::indicates_snap_delta (event->button.state);
2526                 if (mrv) {
2527                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
2528                                 if (_editor->snap_mode () != SnapOff) {
2529                                         snap = false;
2530                                 }
2531                         } else {
2532                                 if (_editor->snap_mode () == SnapOff) {
2533                                         snap = false;
2534                                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
2535                                         if (apply_snap_delta) {
2536                                                 snap = true;
2537                                         }
2538                                 }
2539                         }
2540
2541                         if (apply_snap_delta) {
2542                                 sd = _snap_delta;
2543                         }
2544
2545                         mrv->commit_resizing (nb, at_front, _drags->current_pointer_x() - grab_x(), relative, sd, snap);
2546                 }
2547         }
2548
2549         _editor->commit_reversible_command ();
2550 }
2551
2552 void
2553 NoteResizeDrag::aborted (bool)
2554 {
2555         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
2556         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
2557                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*r);
2558                 if (mrv) {
2559                         mrv->abort_resizing ();
2560                 }
2561         }
2562 }
2563
2564 AVDraggingView::AVDraggingView (RegionView* v)
2565         : view (v)
2566 {
2567         initial_position = v->region()->position ();
2568 }
2569
2570 VideoTimeLineDrag::VideoTimeLineDrag (Editor* e, ArdourCanvas::Item* i)
2571         : Drag (e, i)
2572 {
2573         DEBUG_TRACE (DEBUG::Drags, "New VideoTimeLineDrag\n");
2574
2575         RegionSelection rs;
2576         TrackViewList empty;
2577         empty.clear();
2578         _editor->get_regions_after(rs, (framepos_t) 0, empty);
2579         std::list<RegionView*> views = rs.by_layer();
2580
2581         _stuck = false;
2582         for (list<RegionView*>::iterator i = views.begin(); i != views.end(); ++i) {
2583                 RegionView* rv = (*i);
2584                 if (!rv->region()->video_locked()) {
2585                         continue;
2586                 }
2587                 if (rv->region()->locked()) {
2588                         _stuck = true;
2589                 }
2590                 _views.push_back (AVDraggingView (rv));
2591         }
2592 }
2593
2594 void
2595 VideoTimeLineDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2596 {
2597         Drag::start_grab (event);
2598         if (_editor->session() == 0) {
2599                 return;
2600         }
2601
2602         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
2603                 _stuck = false;
2604                 _views.clear();
2605         }
2606
2607         if (_stuck) {
2608                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2609                 return;
2610         }
2611
2612         _startdrag_video_offset=ARDOUR_UI::instance()->video_timeline->get_offset();
2613         _max_backwards_drag = (
2614                           ARDOUR_UI::instance()->video_timeline->get_duration()
2615                         + ARDOUR_UI::instance()->video_timeline->get_offset()
2616                         - ceil(ARDOUR_UI::instance()->video_timeline->get_apv())
2617                         );
2618
2619         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2620                 if (i->initial_position < _max_backwards_drag || _max_backwards_drag < 0) {
2621                         _max_backwards_drag = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv (i->initial_position);
2622                 }
2623         }
2624         DEBUG_TRACE (DEBUG::Drags, string_compose("VideoTimeLineDrag: max backwards-drag: %1\n", _max_backwards_drag));
2625
2626         char buf[128];
2627         Timecode::Time timecode;
2628         _editor->session()->sample_to_timecode(abs(_startdrag_video_offset), timecode, true /* use_offset */, false /* use_subframes */ );
2629         snprintf (buf, sizeof (buf), "Video Start:\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32, (_startdrag_video_offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames);
2630         show_verbose_cursor_text (buf);
2631 }
2632
2633 void
2634 VideoTimeLineDrag::motion (GdkEvent* event, bool first_move)
2635 {
2636         if (_editor->session() == 0) {
2637                 return;
2638         }
2639         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2640                 return;
2641         }
2642         if (_stuck) {
2643                 show_verbose_cursor_text (_("One or more Audio Regions\nare both Locked and\nLocked to Video.\nThe video cannot me moved."));
2644                 return;
2645         }
2646
2647         framecnt_t dt = adjusted_current_frame (event) - raw_grab_frame() + _pointer_frame_offset;
2648         dt = ARDOUR_UI::instance()->video_timeline->quantify_frames_to_apv(_startdrag_video_offset+dt) - _startdrag_video_offset;
2649
2650         if (_max_backwards_drag >= 0 && dt <= - _max_backwards_drag) {
2651                 dt = - _max_backwards_drag;
2652         }
2653
2654         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset+dt);
2655         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2656
2657         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2658                 RegionView* rv = i->view;
2659                 DEBUG_TRACE (DEBUG::Drags, string_compose("SHIFT REGION at %1 by %2\n", i->initial_position, dt));
2660                 if (first_move) {
2661                         rv->drag_start ();
2662                         rv->region()->clear_changes ();
2663                         rv->region()->suspend_property_changes();
2664                 }
2665                 rv->region()->set_position(i->initial_position + dt);
2666                 rv->region_changed(ARDOUR::Properties::position);
2667         }
2668
2669         const framepos_t offset = ARDOUR_UI::instance()->video_timeline->get_offset();
2670         Timecode::Time timecode;
2671         Timecode::Time timediff;
2672         char buf[128];
2673         _editor->session()->sample_to_timecode(abs(offset), timecode, true /* use_offset */, false /* use_subframes */ );
2674         _editor->session()->sample_to_timecode(abs(dt), timediff, false /* use_offset */, false /* use_subframes */ );
2675         snprintf (buf, sizeof (buf),
2676                         "%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2677                         "\n%s\n%c%02" PRId32 ":%02" PRId32 ":%02" PRId32 ":%02" PRId32
2678                         , _("Video Start:"),
2679                                 (offset<0?'-':' '), timecode.hours, timecode.minutes, timecode.seconds, timecode.frames
2680                         , _("Diff:"),
2681                                 (dt<0?'-':' '), timediff.hours, timediff.minutes, timediff.seconds, timediff.frames
2682                                 );
2683         show_verbose_cursor_text (buf);
2684 }
2685
2686 void
2687 VideoTimeLineDrag::finished (GdkEvent * /*event*/, bool movement_occurred)
2688 {
2689         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2690                 return;
2691         }
2692         if (_stuck) {
2693                 return;
2694         }
2695
2696         if (!movement_occurred || ! _editor->session()) {
2697                 return;
2698         }
2699
2700         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2701
2702         _editor->begin_reversible_command (_("Move Video"));
2703
2704         XMLNode &before = ARDOUR_UI::instance()->video_timeline->get_state();
2705         ARDOUR_UI::instance()->video_timeline->save_undo();
2706         XMLNode &after = ARDOUR_UI::instance()->video_timeline->get_state();
2707         _editor->session()->add_command(new MementoCommand<VideoTimeLine>(*(ARDOUR_UI::instance()->video_timeline), &before, &after));
2708
2709         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2710                 i->view->drag_end();
2711                 i->view->region()->resume_property_changes ();
2712
2713                 _editor->session()->add_command (new StatefulDiffCommand (i->view->region()));
2714         }
2715
2716         _editor->session()->maybe_update_session_range(
2717                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset(), (ARDOUR::frameoffset_t) 0),
2718                         std::max(ARDOUR_UI::instance()->video_timeline->get_offset() + ARDOUR_UI::instance()->video_timeline->get_duration(), (ARDOUR::frameoffset_t) 0)
2719                         );
2720
2721
2722         _editor->commit_reversible_command ();
2723 }
2724
2725 void
2726 VideoTimeLineDrag::aborted (bool)
2727 {
2728         if (ARDOUR_UI::instance()->video_timeline->is_offset_locked()) {
2729                 return;
2730         }
2731         ARDOUR_UI::instance()->video_timeline->set_offset(_startdrag_video_offset);
2732         ARDOUR_UI::instance()->flush_videotimeline_cache(true);
2733
2734         for (list<AVDraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2735                 i->view->region()->resume_property_changes ();
2736                 i->view->region()->set_position(i->initial_position);
2737         }
2738 }
2739
2740 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool preserve_fade_anchor)
2741         : RegionDrag (e, i, p, v)
2742         , _operation (StartTrim)
2743         , _preserve_fade_anchor (preserve_fade_anchor)
2744         , _jump_position_when_done (false)
2745 {
2746         DEBUG_TRACE (DEBUG::Drags, "New TrimDrag\n");
2747 }
2748
2749 void
2750 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
2751 {
2752         double speed = 1.0;
2753         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2754         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2755
2756         if (tv && tv->is_track()) {
2757                 speed = tv->track()->speed();
2758         }
2759
2760         framepos_t const region_start = (framepos_t) (_primary->region()->position() / speed);
2761         framepos_t const region_end = (framepos_t) (_primary->region()->last_frame() / speed);
2762         framecnt_t const region_length = (framecnt_t) (_primary->region()->length() / speed);
2763
2764         framepos_t const pf = adjusted_current_frame (event);
2765         setup_snap_delta (region_start);
2766
2767         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_contents_modifier ())) {
2768                 /* Move the contents of the region around without changing the region bounds */
2769                 _operation = ContentsTrim;
2770                 Drag::start_grab (event, _editor->cursors()->trimmer);
2771         } else {
2772                 /* These will get overridden for a point trim.*/
2773                 if (pf < (region_start + region_length/2)) {
2774                         /* closer to front */
2775                         _operation = StartTrim;
2776                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2777                                 Drag::start_grab (event, _editor->cursors()->anchored_left_side_trim);
2778                         } else {
2779                                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
2780                         }
2781                 } else {
2782                         /* closer to end */
2783                         _operation = EndTrim;
2784                         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::trim_anchored_modifier ())) {
2785                                 Drag::start_grab (event, _editor->cursors()->anchored_right_side_trim);
2786                         } else {
2787                                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
2788                         }
2789                 }
2790         }
2791         /* jump trim disabled for now
2792         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::trim_jump_modifier ())) {
2793                 _jump_position_when_done = true;
2794         }
2795         */
2796
2797         switch (_operation) {
2798         case StartTrim:
2799                 show_verbose_cursor_time (region_start);
2800                 break;
2801         case EndTrim:
2802                 show_verbose_cursor_duration (region_start, region_end);
2803                 break;
2804         case ContentsTrim:
2805                 show_verbose_cursor_time (pf);
2806                 break;
2807         }
2808
2809         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2810                 i->view->region()->suspend_property_changes ();
2811         }
2812 }
2813
2814 void
2815 TrimDrag::motion (GdkEvent* event, bool first_move)
2816 {
2817         RegionView* rv = _primary;
2818
2819         double speed = 1.0;
2820         TimeAxisView* tvp = &_primary->get_time_axis_view ();
2821         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
2822         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
2823         frameoffset_t frame_delta = 0;
2824
2825         if (tv && tv->is_track()) {
2826                 speed = tv->track()->speed();
2827         }
2828         framecnt_t adj_frame = adjusted_frame (_drags->current_pointer_frame () + snap_delta (event->button.state), event, true);
2829         framecnt_t dt = adj_frame - raw_grab_frame () + _pointer_frame_offset - snap_delta (event->button.state);
2830
2831         if (first_move) {
2832
2833                 string trim_type;
2834
2835                 switch (_operation) {
2836                 case StartTrim:
2837                         trim_type = "Region start trim";
2838                         break;
2839                 case EndTrim:
2840                         trim_type = "Region end trim";
2841                         break;
2842                 case ContentsTrim:
2843                         trim_type = "Region content trim";
2844                         break;
2845                 default:
2846                         assert(0);
2847                         break;
2848                 }
2849
2850                 _editor->begin_reversible_command (trim_type);
2851
2852                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2853                         RegionView* rv = i->view;
2854                         rv->enable_display (false);
2855                         rv->region()->playlist()->clear_owned_changes ();
2856
2857                         if (_operation == StartTrim) {
2858                                 rv->trim_front_starting ();
2859                         }
2860
2861                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (rv);
2862
2863                         if (arv) {
2864                                 arv->temporarily_hide_envelope ();
2865                                 arv->drag_start ();
2866                         }
2867
2868                         boost::shared_ptr<Playlist> pl = rv->region()->playlist();
2869                         insert_result = _editor->motion_frozen_playlists.insert (pl);
2870
2871                         if (insert_result.second) {
2872                                 pl->freeze();
2873                         }
2874                 }
2875         }
2876
2877         bool non_overlap_trim = false;
2878
2879         if (event && Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::trim_overlap_modifier ())) {
2880                 non_overlap_trim = true;
2881         }
2882
2883         /* contstrain trim to fade length */
2884         if (_preserve_fade_anchor) {
2885                 switch (_operation) {
2886                         case StartTrim:
2887                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2888                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2889                                         if (!arv) continue;
2890                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2891                                         if (ar->locked()) continue;
2892                                         framecnt_t len = ar->fade_in()->back()->when;
2893                                         if (len < dt) dt = min(dt, len);
2894                                 }
2895                                 break;
2896                         case EndTrim:
2897                                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2898                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2899                                         if (!arv) continue;
2900                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2901                                         if (ar->locked()) continue;
2902                                         framecnt_t len = ar->fade_out()->back()->when;
2903                                         if (len < -dt) dt = max(dt, -len);
2904                                 }
2905                                 break;
2906                         case ContentsTrim:
2907                                 break;
2908                 }
2909         }
2910
2911
2912         switch (_operation) {
2913         case StartTrim:
2914                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2915                         bool changed = i->view->trim_front (i->initial_position + dt, non_overlap_trim);
2916                         if (changed && _preserve_fade_anchor) {
2917                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2918                                 if (arv) {
2919                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2920                                         framecnt_t len = ar->fade_in()->back()->when;
2921                                         framecnt_t diff = ar->first_frame() - i->initial_position;
2922                                         framepos_t new_length = len - diff;
2923                                         i->anchored_fade_length = min (ar->length(), new_length);
2924                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, true  /*START*/ );
2925                                         arv->reset_fade_in_shape_width (ar, i->anchored_fade_length, true);
2926                                 }
2927                         }
2928                 }
2929                 break;
2930
2931         case EndTrim:
2932                 for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2933                         bool changed = i->view->trim_end (i->initial_end + dt, non_overlap_trim);
2934                         if (changed && _preserve_fade_anchor) {
2935                                 AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2936                                 if (arv) {
2937                                         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2938                                         framecnt_t len = ar->fade_out()->back()->when;
2939                                         framecnt_t diff = 1 + ar->last_frame() - i->initial_end;
2940                                         framepos_t new_length = len + diff;
2941                                         i->anchored_fade_length = min (ar->length(), new_length);
2942                                         //i->anchored_fade_length = ar->verify_xfade_bounds (new_length, false  /*END*/ );
2943                                         arv->reset_fade_out_shape_width (ar, i->anchored_fade_length, true);
2944                                 }
2945                         }
2946                 }
2947                 break;
2948
2949         case ContentsTrim:
2950                 {
2951                         frame_delta = (last_pointer_frame() - adjusted_current_frame(event));
2952
2953                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2954                                 i->view->move_contents (frame_delta);
2955                         }
2956                 }
2957                 break;
2958         }
2959
2960         switch (_operation) {
2961         case StartTrim:
2962                 show_verbose_cursor_time ((framepos_t) (rv->region()->position() / speed));
2963                 break;
2964         case EndTrim:
2965                 show_verbose_cursor_duration ((framepos_t)  rv->region()->position() / speed, (framepos_t) rv->region()->last_frame() / speed);
2966                 break;
2967         case ContentsTrim:
2968                 // show_verbose_cursor_time (frame_delta);
2969                 break;
2970         }
2971 }
2972
2973 void
2974 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
2975 {
2976         if (movement_occurred) {
2977                 motion (event, false);
2978
2979                 if (_operation == StartTrim) {
2980                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
2981                                 {
2982                                         /* This must happen before the region's StatefulDiffCommand is created, as it may
2983                                            `correct' (ahem) the region's _start from being negative to being zero.  It
2984                                            needs to be zero in the undo record.
2985                                         */
2986                                         i->view->trim_front_ending ();
2987                                 }
2988                                 if (_preserve_fade_anchor) {
2989                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
2990                                         if (arv) {
2991                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
2992                                                 arv->reset_fade_in_shape_width (ar, i->anchored_fade_length);
2993                                                 ar->set_fade_in_length(i->anchored_fade_length);
2994                                                 ar->set_fade_in_active(true);
2995                                         }
2996                                 }
2997                                 if (_jump_position_when_done) {
2998                                         i->view->region()->set_position (i->initial_position);
2999                                 }
3000                         }
3001                 } else if (_operation == EndTrim) {
3002                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3003                                 if (_preserve_fade_anchor) {
3004                                         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (i->view);
3005                                         if (arv) {
3006                                                 boost::shared_ptr<AudioRegion> ar (arv->audio_region());
3007                                                 arv->reset_fade_out_shape_width (ar, i->anchored_fade_length);
3008                                                 ar->set_fade_out_length(i->anchored_fade_length);
3009                                                 ar->set_fade_out_active(true);
3010                                         }
3011                                 }
3012                                 if (_jump_position_when_done) {
3013                                         i->view->region()->set_position (i->initial_end - i->view->region()->length());
3014                                 }
3015                         }
3016                 }
3017
3018                 if (!_views.empty()) {
3019                         if (_operation == StartTrim) {
3020                                 _editor->maybe_locate_with_edit_preroll(
3021                                         _views.begin()->view->region()->position());
3022                         }
3023                         if (_operation == EndTrim) {
3024                                 _editor->maybe_locate_with_edit_preroll(
3025                                         _views.begin()->view->region()->position() +
3026                                         _views.begin()->view->region()->length());
3027                         }
3028                 }
3029
3030                 if (!_editor->selection->selected (_primary)) {
3031                         _primary->thaw_after_trim ();
3032                 } else {
3033
3034                         set<boost::shared_ptr<Playlist> > diffed_playlists;
3035
3036                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3037                                 i->view->thaw_after_trim ();
3038                                 i->view->enable_display (true);
3039
3040                                 /* Trimming one region may affect others on the playlist, so we need
3041                                    to get undo Commands from the whole playlist rather than just the
3042                                    region.  Use diffed_playlists to make sure we don't diff a given
3043                                    playlist more than once.
3044                                 */
3045                                 boost::shared_ptr<Playlist> p = i->view->region()->playlist ();
3046                                 if (diffed_playlists.find (p) == diffed_playlists.end()) {
3047                                         vector<Command*> cmds;
3048                                         p->rdiff (cmds);
3049                                         _editor->session()->add_commands (cmds);
3050                                         diffed_playlists.insert (p);
3051                                 }
3052                         }
3053                 }
3054
3055                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
3056                         (*p)->thaw ();
3057                 }
3058
3059                 _editor->motion_frozen_playlists.clear ();
3060                 _editor->commit_reversible_command();
3061
3062         } else {
3063                 /* no mouse movement */
3064                 if (adjusted_current_frame (event) != adjusted_frame (_drags->current_pointer_frame(), event, false)) {
3065                         _editor->point_trim (event, adjusted_current_frame (event));
3066                 }
3067         }
3068
3069         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3070                 i->view->region()->resume_property_changes ();
3071         }
3072 }
3073
3074 void
3075 TrimDrag::aborted (bool movement_occurred)
3076 {
3077         /* Our motion method is changing model state, so use the Undo system
3078            to cancel.  Perhaps not ideal, as this will leave an Undo point
3079            behind which may be slightly odd from the user's point of view.
3080         */
3081
3082         finished (0, true);
3083
3084         if (movement_occurred) {
3085                 _editor->undo ();
3086         }
3087
3088         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
3089                 i->view->region()->resume_property_changes ();
3090         }
3091 }
3092
3093 void
3094 TrimDrag::setup_pointer_frame_offset ()
3095 {
3096         list<DraggingView>::iterator i = _views.begin ();
3097         while (i != _views.end() && i->view != _primary) {
3098                 ++i;
3099         }
3100
3101         if (i == _views.end()) {
3102                 return;
3103         }
3104
3105         switch (_operation) {
3106         case StartTrim:
3107                 _pointer_frame_offset = raw_grab_frame() - i->initial_position;
3108                 break;
3109         case EndTrim:
3110                 _pointer_frame_offset = raw_grab_frame() - i->initial_end;
3111                 break;
3112         case ContentsTrim:
3113                 break;
3114         }
3115 }
3116
3117 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3118         : Drag (e, i),
3119           _copy (c)
3120         , before_state (0)
3121 {
3122         DEBUG_TRACE (DEBUG::Drags, "New MeterMarkerDrag\n");
3123         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
3124         assert (_marker);
3125         _real_section = &_marker->meter();
3126
3127 }
3128
3129 void
3130 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3131 {
3132         Drag::start_grab (event, cursor);
3133         show_verbose_cursor_time (adjusted_current_frame(event));
3134 }
3135
3136 void
3137 MeterMarkerDrag::setup_pointer_frame_offset ()
3138 {
3139         _pointer_frame_offset = raw_grab_frame() - _marker->meter().frame();
3140 }
3141
3142 void
3143 MeterMarkerDrag::motion (GdkEvent* event, bool first_move)
3144 {
3145         if (!_marker->meter().movable()) {
3146                 //return;
3147         }
3148
3149         if (first_move) {
3150
3151                 // create a dummy marker to catch events, then hide it.
3152
3153                 char name[64];
3154                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().divisions_per_bar(), _marker->meter().note_divisor ());
3155
3156                 _marker = new MeterMarker (
3157                         *_editor,
3158                         *_editor->meter_group,
3159                         UIConfiguration::instance().color ("meter marker"),
3160                         name,
3161                         *new MeterSection (_marker->meter())
3162                 );
3163
3164                 /* use the new marker for the grab */
3165                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3166                 _marker->hide();
3167
3168                 TempoMap& map (_editor->session()->tempo_map());
3169                 /* get current state */
3170                 before_state = &map.get_state();
3171
3172                 if (!_copy) {
3173                         _editor->begin_reversible_command (_("move meter mark"));
3174                 } else {
3175                         _editor->begin_reversible_command (_("copy meter mark"));
3176
3177                         Timecode::BBT_Time bbt = _real_section->bbt();
3178
3179                         /* we can't add a meter where one currently exists */
3180                         if (_real_section->frame() < adjusted_current_frame (event, false)) {
3181                                 ++bbt.bars;
3182                         } else {
3183                                 --bbt.bars;
3184                         }
3185                         const double beat = map.bbt_to_beats (bbt);
3186
3187                         if (_real_section->position_lock_style() == AudioTime) {
3188                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor())
3189                                                                , map.frame_time (bbt), beat, bbt);
3190                         } else {
3191                                 _real_section = map.add_meter (Meter (_marker->meter().divisions_per_bar(), _marker->meter().note_divisor()), beat, bbt);
3192                         }
3193                 }
3194         }
3195
3196         framepos_t const pf = adjusted_current_frame (event, false);
3197         if (_marker->meter().position_lock_style() == MusicTime) {
3198                 TempoMap& map (_editor->session()->tempo_map());
3199                 Timecode::BBT_Time bbt;
3200                 map.bbt_time (pf, bbt);
3201                 /* round bbt to bars */
3202                 map.round_bbt (bbt, -1);
3203
3204                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3205                         _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3206                 } else if (bbt.bars > _real_section->bbt().bars) {
3207                         const double pulse = _real_section->pulse() + (_real_section->note_divisor() / _real_section->divisions_per_bar());
3208                         _editor->session()->tempo_map().gui_move_meter (_real_section, pulse);
3209                 } else if (bbt.bars < _real_section->bbt().bars) {
3210                         const MeterSection& prev_m = map.meter_section_at (pf);
3211                         const double pulse = _real_section->pulse() - (prev_m.note_divisor() / prev_m.divisions_per_bar());
3212                         _editor->session()->tempo_map().gui_move_meter (_real_section, pulse);
3213                 }
3214         } else {
3215                 if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3216                         _editor->session()->tempo_map().gui_dilate_tempo (_real_section, pf);
3217                 } else {
3218                         _editor->session()->tempo_map().gui_move_meter (_real_section, pf);
3219                 }
3220         }
3221         _marker->set_position (pf);
3222         show_verbose_cursor_time (_real_section->frame());
3223 }
3224
3225 void
3226 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3227 {
3228         if (!movement_occurred) {
3229                 if (was_double_click()) {
3230                         _editor->edit_meter_marker (*_marker);
3231                 }
3232                 return;
3233         }
3234
3235         TempoMap& map (_editor->session()->tempo_map());
3236
3237         XMLNode &after = map.get_state();
3238         _editor->session()->add_command(new MementoCommand<TempoMap>(map, before_state, &after));
3239         _editor->commit_reversible_command ();
3240
3241         // delete the dummy marker we used for visual representation while moving.
3242         // a new visual marker will show up automatically.
3243         delete _marker;
3244 }
3245
3246 void
3247 MeterMarkerDrag::aborted (bool moved)
3248 {
3249         _marker->set_position (_marker->meter().frame ());
3250         if (moved) {
3251                 _editor->session()->tempo_map().set_state (*before_state, Stateful::current_state_version);
3252                 // delete the dummy marker we used for visual representation while moving.
3253                 // a new visual marker will show up automatically.
3254                 delete _marker;
3255         }
3256 }
3257
3258 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
3259         : Drag (e, i)
3260         , _copy (c)
3261         , before_state (0)
3262 {
3263         DEBUG_TRACE (DEBUG::Drags, "New TempoMarkerDrag\n");
3264
3265         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
3266         _real_section = &_marker->tempo();
3267         _movable = _real_section->movable();
3268         assert (_marker);
3269 }
3270
3271 void
3272 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3273 {
3274         Drag::start_grab (event, cursor);
3275         if (!_real_section->active()) {
3276                 show_verbose_cursor_text (_("inactive"));
3277         } else {
3278                 show_verbose_cursor_time (adjusted_current_frame (event));
3279         }
3280 }
3281
3282 void
3283 TempoMarkerDrag::setup_pointer_frame_offset ()
3284 {
3285         _pointer_frame_offset = raw_grab_frame() - _marker->tempo().frame();
3286 }
3287
3288 void
3289 TempoMarkerDrag::motion (GdkEvent* event, bool first_move)
3290 {
3291         if (!_real_section->active()) {
3292                 return;
3293         }
3294         if (first_move) {
3295
3296                 // mvc drag - create a dummy marker to catch events, hide it.
3297
3298                 char name[64];
3299                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
3300
3301                 TempoSection section (_marker->tempo());
3302
3303                 _marker = new TempoMarker (
3304                         *_editor,
3305                         *_editor->tempo_group,
3306                         UIConfiguration::instance().color ("tempo marker"),
3307                         name,
3308                         *new TempoSection (_marker->tempo())
3309                         );
3310
3311                 /* use the new marker for the grab */
3312                 swap_grab (&_marker->the_item(), 0, GDK_CURRENT_TIME);
3313                 _marker->hide();
3314
3315                 TempoMap& map (_editor->session()->tempo_map());
3316                 /* get current state */
3317                 before_state = &map.get_state();
3318                 if (!_copy) {
3319                         _editor->begin_reversible_command (_("move tempo mark"));
3320                 } else {
3321                         _editor->begin_reversible_command (_("copy tempo mark"));
3322                         framepos_t frame;
3323                         bool use_snap = false;
3324
3325                         if (!_editor->snap_musical()) {
3326                                 frame = adjusted_current_frame (event);
3327                         } else {
3328                                 frame = adjusted_current_frame (event, false);
3329                                 if (ArdourKeyboard::indicates_snap (event->button.state)) {
3330                                         if (_editor->snap_mode() == Editing::SnapOff) {
3331                                                 use_snap = true;
3332                                         } else {
3333                                                 use_snap = false;
3334                                         }
3335                                 } else {
3336                                         if (_editor->snap_mode() == Editing::SnapOff) {
3337                                                 use_snap = false;
3338                                         } else {
3339                                                 use_snap = true;
3340                                         }
3341                                 }
3342                         }
3343
3344                         Timecode::BBT_Time bbt;
3345                         map.bbt_time (frame, bbt);
3346
3347                         /* add new tempo section to map, ensuring we don't refer to existing tempos for snap */
3348
3349                         if (_real_section->position_lock_style() == MusicTime) {
3350                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3351                                         map.round_bbt (bbt, -1);
3352                                 } else if (use_snap) {
3353                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3354                                 }
3355                                 double const pulse = map.predict_tempo_pulse (_real_section, map.frame_time (bbt));
3356                                 _real_section = map.add_tempo (_marker->tempo(), pulse, _real_section->type());
3357                         } else {
3358                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3359                                         map.round_bbt (bbt, -1);
3360                                 } else if (use_snap) {
3361                                         map.round_bbt (bbt, _editor->get_grid_beat_divisions (0));
3362                                 }
3363                                 if (use_snap) {
3364                                         frame = map.predict_tempo_frame (_real_section, bbt);
3365                                 }
3366                                 _real_section = map.add_tempo (_marker->tempo(), frame, _real_section->type());
3367                         }
3368                 }
3369
3370         }
3371
3372         framepos_t pf;
3373         Tempo const tp = _marker->tempo();
3374         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::constraint_modifier ())) {
3375                 double new_bpm = _real_section->beats_per_minute() + ((last_pointer_y() - current_pointer_y()) / 5.0);
3376                 _editor->session()->tempo_map().gui_change_tempo (_real_section, Tempo (new_bpm, _real_section->note_type()));
3377                 stringstream strs;
3378                 strs << new_bpm;
3379                 show_verbose_cursor_text (strs.str());
3380         } else if (_movable) {
3381                 if (!_editor->snap_musical()) {
3382                         /* snap normally (this is not self-referential).*/
3383                         pf = adjusted_current_frame (event);
3384                 } else {
3385                         /* but this is.
3386                            we can't use the map for anything related to tempo,
3387                            so we round bbt using meters, which have no dependency
3388                            on pulse for this kind of thing.
3389                         */
3390                         bool use_snap;
3391                         TempoMap& map (_editor->session()->tempo_map());
3392
3393                         pf = adjusted_current_frame (event, false);
3394                         if (ArdourKeyboard::indicates_snap (event->button.state)) {
3395                                 if (_editor->snap_mode() == Editing::SnapOff) {
3396                                         use_snap = true;
3397                                 } else {
3398                                         use_snap = false;
3399                                 }
3400                         } else {
3401                                 if (_editor->snap_mode() == Editing::SnapOff) {
3402                                         use_snap = false;
3403                                 } else {
3404                                         use_snap = true;
3405                                 }
3406                         }
3407
3408                         Timecode::BBT_Time when;
3409                         map.bbt_time (pf, when);
3410
3411                         if (_real_section->position_lock_style() == MusicTime) {
3412
3413                                 const double pulse = map.predict_tempo_pulse (_real_section, pf);
3414                                 when = map.pulse_to_bbt (pulse);
3415                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3416                                         map.round_bbt (when, -1);
3417                                 } else if (use_snap) {
3418                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3419                                 }
3420                                 const double beat = map.bbt_to_beats (when);
3421                                 map.gui_move_tempo_beat (_real_section, beat);
3422                         } else {
3423                                 if (use_snap && _editor->snap_type() == SnapToBar) {
3424                                         map.round_bbt (when, -1);
3425                                 } else if (use_snap) {
3426                                         map.round_bbt (when, _editor->get_grid_beat_divisions (0));
3427                                 }
3428                                 if (use_snap) {
3429                                         pf = map.predict_tempo_frame (_real_section, when);
3430                                 }
3431                                 map.gui_move_tempo_frame (_real_section, pf);
3432                         }
3433                 }
3434
3435                 show_verbose_cursor_time (_real_section->frame());
3436         }
3437         _marker->set_position (pf);
3438 }
3439
3440 void
3441 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
3442 {
3443         if (!_real_section->active()) {
3444                 return;
3445         }
3446         if (!movement_occurred) {
3447                 if (was_double_click()) {
3448                         _editor->edit_tempo_marker (*_marker);
3449                 }
3450                 return;
3451         }
3452
3453         TempoMap& map (_editor->session()->tempo_map());
3454
3455         XMLNode &after = map.get_state();
3456         _editor->session()->add_command (new MementoCommand<TempoMap>(map, before_state, &after));
3457         _editor->commit_reversible_command ();
3458
3459         // delete the dummy marker we used for visual representation while moving.
3460         // a new visual marker will show up automatically.
3461         delete _marker;
3462 }
3463
3464 void
3465 TempoMarkerDrag::aborted (bool moved)
3466 {
3467         _marker->set_position (_marker->tempo().frame());
3468         if (moved) {
3469                 TempoMap& map (_editor->session()->tempo_map());
3470                 map.set_state (*before_state, Stateful::current_state_version);
3471                 // delete the dummy marker we used for visual representation while moving.
3472                 // a new visual marker will show up automatically.
3473                 delete _marker;
3474         }
3475 }
3476
3477 CursorDrag::CursorDrag (Editor* e, EditorCursor& c, bool s)
3478         : Drag (e, &c.track_canvas_item(), false)
3479         , _cursor (c)
3480         , _stop (s)
3481         , _grab_zoom (0.0)
3482 {
3483         DEBUG_TRACE (DEBUG::Drags, "New CursorDrag\n");
3484 }
3485
3486 /** Do all the things we do when dragging the playhead to make it look as though
3487  *  we have located, without actually doing the locate (because that would cause
3488  *  the diskstream buffers to be refilled, which is too slow).
3489  */
3490 void
3491 CursorDrag::fake_locate (framepos_t t)
3492 {
3493         if (_editor->session () == 0) {
3494                 return;
3495         }
3496
3497         _editor->playhead_cursor->set_position (t);
3498
3499         Session* s = _editor->session ();
3500         if (s->timecode_transmission_suspended ()) {
3501                 framepos_t const f = _editor->playhead_cursor->current_frame ();
3502                 /* This is asynchronous so it will be sent "now"
3503                  */
3504                 s->send_mmc_locate (f);
3505                 /* These are synchronous and will be sent during the next
3506                    process cycle
3507                 */
3508                 s->queue_full_time_code ();
3509                 s->queue_song_position_pointer ();
3510         }
3511
3512         show_verbose_cursor_time (t);
3513         _editor->UpdateAllTransportClocks (t);
3514 }
3515
3516 void
3517 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
3518 {
3519         Drag::start_grab (event, c);
3520         setup_snap_delta (_editor->playhead_cursor->current_frame ());
3521
3522         _grab_zoom = _editor->samples_per_pixel;
3523
3524         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3525
3526         _editor->snap_to_with_modifier (where, event);
3527
3528         _editor->_dragging_playhead = true;
3529
3530         Session* s = _editor->session ();
3531
3532         /* grab the track canvas item as well */
3533
3534         _cursor.track_canvas_item().grab();
3535
3536         if (s) {
3537                 if (_was_rolling && _stop) {
3538                         s->request_stop ();
3539                 }
3540
3541                 if (s->is_auditioning()) {
3542                         s->cancel_audition ();
3543                 }
3544
3545
3546                 if (AudioEngine::instance()->connected()) {
3547
3548                         /* do this only if we're the engine is connected
3549                          * because otherwise this request will never be
3550                          * serviced and we'll busy wait forever. likewise,
3551                          * notice if we are disconnected while waiting for the
3552                          * request to be serviced.
3553                          */
3554
3555                         s->request_suspend_timecode_transmission ();
3556                         while (AudioEngine::instance()->connected() && !s->timecode_transmission_suspended ()) {
3557                                 /* twiddle our thumbs */
3558                         }
3559                 }
3560         }
3561
3562         fake_locate (where - snap_delta (event->button.state));
3563 }
3564
3565 void
3566 CursorDrag::motion (GdkEvent* event, bool)
3567 {
3568         framepos_t where = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3569         _editor->snap_to_with_modifier (where, event);
3570         if (where != last_pointer_frame()) {
3571                 fake_locate (where - snap_delta (event->button.state));
3572         }
3573 }
3574
3575 void
3576 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
3577 {
3578         _editor->_dragging_playhead = false;
3579
3580         _cursor.track_canvas_item().ungrab();
3581
3582         if (!movement_occurred && _stop) {
3583                 return;
3584         }
3585
3586         motion (event, false);
3587
3588         Session* s = _editor->session ();
3589         if (s) {
3590                 s->request_locate (_editor->playhead_cursor->current_frame (), _was_rolling);
3591                 _editor->_pending_locate_request = true;
3592                 s->request_resume_timecode_transmission ();
3593         }
3594 }
3595
3596 void
3597 CursorDrag::aborted (bool)
3598 {
3599         _cursor.track_canvas_item().ungrab();
3600
3601         if (_editor->_dragging_playhead) {
3602                 _editor->session()->request_resume_timecode_transmission ();
3603                 _editor->_dragging_playhead = false;
3604         }
3605
3606         _editor->playhead_cursor->set_position (adjusted_frame (grab_frame (), 0, false));
3607 }
3608
3609 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3610         : RegionDrag (e, i, p, v)
3611 {
3612         DEBUG_TRACE (DEBUG::Drags, "New FadeInDrag\n");
3613 }
3614
3615 void
3616 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3617 {
3618         Drag::start_grab (event, cursor);
3619
3620         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3621         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3622         setup_snap_delta (r->position ());
3623
3624         show_verbose_cursor_duration (r->position(), r->position() + r->fade_in()->back()->when, 32);
3625 }
3626
3627 void
3628 FadeInDrag::setup_pointer_frame_offset ()
3629 {
3630         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3631         boost::shared_ptr<AudioRegion> const r = arv->audio_region ();
3632         _pointer_frame_offset = raw_grab_frame() - ((framecnt_t) r->fade_in()->back()->when + r->position());
3633 }
3634
3635 void
3636 FadeInDrag::motion (GdkEvent* event, bool)
3637 {
3638         framecnt_t fade_length;
3639
3640         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3641         _editor->snap_to_with_modifier (pos, event);
3642         pos -= snap_delta (event->button.state);
3643
3644         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3645
3646         if (pos < (region->position() + 64)) {
3647                 fade_length = 64; // this should be a minimum defined somewhere
3648         } else if (pos > region->position() + region->length() - region->fade_out()->back()->when) {
3649                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3650         } else {
3651                 fade_length = pos - region->position();
3652         }
3653
3654         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3655
3656                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3657
3658                 if (!tmp) {
3659                         continue;
3660                 }
3661
3662                 tmp->reset_fade_in_shape_width (tmp->audio_region(), fade_length);
3663         }
3664
3665         show_verbose_cursor_duration (region->position(), region->position() + fade_length, 32);
3666 }
3667
3668 void
3669 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
3670 {
3671         if (!movement_occurred) {
3672                 return;
3673         }
3674
3675         framecnt_t fade_length;
3676         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3677         _editor->snap_to_with_modifier (pos, event);
3678         pos -= snap_delta (event->button.state);
3679
3680         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3681
3682         if (pos < (region->position() + 64)) {
3683                 fade_length = 64; // this should be a minimum defined somewhere
3684         } else if (pos >= region->position() + region->length() - region->fade_out()->back()->when) {
3685                 fade_length = region->length() - region->fade_out()->back()->when - 1;
3686         } else {
3687                 fade_length = pos - region->position();
3688         }
3689
3690         bool in_command = false;
3691
3692         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3693
3694                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3695
3696                 if (!tmp) {
3697                         continue;
3698                 }
3699
3700                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
3701                 XMLNode &before = alist->get_state();
3702
3703                 tmp->audio_region()->set_fade_in_length (fade_length);
3704                 tmp->audio_region()->set_fade_in_active (true);
3705
3706                 if (!in_command) {
3707                         _editor->begin_reversible_command (_("change fade in length"));
3708                         in_command = true;
3709                 }
3710                 XMLNode &after = alist->get_state();
3711                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3712         }
3713
3714         if (in_command) {
3715                 _editor->commit_reversible_command ();
3716         }
3717 }
3718
3719 void
3720 FadeInDrag::aborted (bool)
3721 {
3722         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3723                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3724
3725                 if (!tmp) {
3726                         continue;
3727                 }
3728
3729                 tmp->reset_fade_in_shape_width (tmp->audio_region(), tmp->audio_region()->fade_in()->back()->when);
3730         }
3731 }
3732
3733 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
3734         : RegionDrag (e, i, p, v)
3735 {
3736         DEBUG_TRACE (DEBUG::Drags, "New FadeOutDrag\n");
3737 }
3738
3739 void
3740 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3741 {
3742         Drag::start_grab (event, cursor);
3743
3744         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3745         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3746         setup_snap_delta (r->last_frame ());
3747
3748         show_verbose_cursor_duration (r->last_frame() - r->fade_out()->back()->when, r->last_frame());
3749 }
3750
3751 void
3752 FadeOutDrag::setup_pointer_frame_offset ()
3753 {
3754         AudioRegionView* arv = dynamic_cast<AudioRegionView*> (_primary);
3755         boost::shared_ptr<AudioRegion> r = arv->audio_region ();
3756         _pointer_frame_offset = raw_grab_frame() - (r->length() - (framecnt_t) r->fade_out()->back()->when + r->position());
3757 }
3758
3759 void
3760 FadeOutDrag::motion (GdkEvent* event, bool)
3761 {
3762         framecnt_t fade_length;
3763
3764         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3765         _editor->snap_to_with_modifier (pos, event);
3766         pos -= snap_delta (event->button.state);
3767
3768         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3769
3770         if (pos > (region->last_frame() - 64)) {
3771                 fade_length = 64; // this should really be a minimum fade defined somewhere
3772         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3773                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3774         } else {
3775                 fade_length = region->last_frame() - pos;
3776         }
3777
3778         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3779
3780                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3781
3782                 if (!tmp) {
3783                         continue;
3784                 }
3785
3786                 tmp->reset_fade_out_shape_width (tmp->audio_region(), fade_length);
3787         }
3788
3789         show_verbose_cursor_duration (region->last_frame() - fade_length, region->last_frame());
3790 }
3791
3792 void
3793 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
3794 {
3795         if (!movement_occurred) {
3796                 return;
3797         }
3798
3799         framecnt_t fade_length;
3800
3801         framepos_t pos = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
3802         _editor->snap_to_with_modifier (pos, event);
3803         pos -= snap_delta (event->button.state);
3804
3805         boost::shared_ptr<AudioRegion> region = boost::dynamic_pointer_cast<AudioRegion> (_primary->region ());
3806
3807         if (pos > (region->last_frame() - 64)) {
3808                 fade_length = 64; // this should really be a minimum fade defined somewhere
3809         } else if (pos <= region->position() + region->fade_in()->back()->when) {
3810                 fade_length = region->length() - region->fade_in()->back()->when - 1;
3811         } else {
3812                 fade_length = region->last_frame() - pos;
3813         }
3814
3815         bool in_command = false;
3816
3817         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3818
3819                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3820
3821                 if (!tmp) {
3822                         continue;
3823                 }
3824
3825                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
3826                 XMLNode &before = alist->get_state();
3827
3828                 tmp->audio_region()->set_fade_out_length (fade_length);
3829                 tmp->audio_region()->set_fade_out_active (true);
3830
3831                 if (!in_command) {
3832                         _editor->begin_reversible_command (_("change fade out length"));
3833                         in_command = true;
3834                 }
3835                 XMLNode &after = alist->get_state();
3836                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
3837         }
3838
3839         if (in_command) {
3840                 _editor->commit_reversible_command ();
3841         }
3842 }
3843
3844 void
3845 FadeOutDrag::aborted (bool)
3846 {
3847         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
3848                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
3849
3850                 if (!tmp) {
3851                         continue;
3852                 }
3853
3854                 tmp->reset_fade_out_shape_width (tmp->audio_region(), tmp->audio_region()->fade_out()->back()->when);
3855         }
3856 }
3857
3858 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
3859         : Drag (e, i)
3860         , _selection_changed (false)
3861 {
3862         DEBUG_TRACE (DEBUG::Drags, "New MarkerDrag\n");
3863         Gtk::Window* toplevel = _editor->current_toplevel();
3864         _marker = reinterpret_cast<ArdourMarker*> (_item->get_data ("marker"));
3865
3866         assert (_marker);
3867
3868         _points.push_back (ArdourCanvas::Duple (0, 0));
3869
3870         _points.push_back (ArdourCanvas::Duple (0, toplevel ? physical_screen_height (toplevel->get_window()) : 900));
3871 }
3872
3873 MarkerDrag::~MarkerDrag ()
3874 {
3875         for (CopiedLocationInfo::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
3876                 delete i->location;
3877         }
3878 }
3879
3880 MarkerDrag::CopiedLocationMarkerInfo::CopiedLocationMarkerInfo (Location* l, ArdourMarker* m)
3881 {
3882         location = new Location (*l);
3883         markers.push_back (m);
3884         move_both = false;
3885 }
3886
3887 void
3888 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3889 {
3890         Drag::start_grab (event, cursor);
3891
3892         bool is_start;
3893
3894         Location *location = _editor->find_location_from_marker (_marker, is_start);
3895         _editor->_dragging_edit_point = true;
3896
3897         update_item (location);
3898
3899         // _drag_line->show();
3900         // _line->raise_to_top();
3901
3902         if (is_start) {
3903                 show_verbose_cursor_time (location->start());
3904         } else {
3905                 show_verbose_cursor_time (location->end());
3906         }
3907         setup_snap_delta (is_start ? location->start() : location->end());
3908
3909         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3910
3911         switch (op) {
3912         case Selection::Toggle:
3913                 /* we toggle on the button release */
3914                 break;
3915         case Selection::Set:
3916                 if (!_editor->selection->selected (_marker)) {
3917                         _editor->selection->set (_marker);
3918                         _selection_changed = true;
3919                 }
3920                 break;
3921         case Selection::Extend:
3922         {
3923                 Locations::LocationList ll;
3924                 list<ArdourMarker*> to_add;
3925                 framepos_t s, e;
3926                 _editor->selection->markers.range (s, e);
3927                 s = min (_marker->position(), s);
3928                 e = max (_marker->position(), e);
3929                 s = min (s, e);
3930                 e = max (s, e);
3931                 if (e < max_framepos) {
3932                         ++e;
3933                 }
3934                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
3935                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
3936                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
3937                         if (lm) {
3938                                 if (lm->start) {
3939                                         to_add.push_back (lm->start);
3940                                 }
3941                                 if (lm->end) {
3942                                         to_add.push_back (lm->end);
3943                                 }
3944                         }
3945                 }
3946                 if (!to_add.empty()) {
3947                         _editor->selection->add (to_add);
3948                         _selection_changed = true;
3949                 }
3950                 break;
3951         }
3952         case Selection::Add:
3953                 _editor->selection->add (_marker);
3954                 _selection_changed = true;
3955
3956                 break;
3957         }
3958
3959         /* Set up copies for us to manipulate during the drag
3960          */
3961
3962         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
3963
3964                 Location* l = _editor->find_location_from_marker (*i, is_start);
3965
3966                 if (!l) {
3967                         continue;
3968                 }
3969
3970                 if (l->is_mark()) {
3971                         _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3972                 } else {
3973                         /* range: check that the other end of the range isn't
3974                            already there.
3975                         */
3976                         CopiedLocationInfo::iterator x;
3977                         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
3978                                 if (*(*x).location == *l) {
3979                                         break;
3980                                 }
3981                         }
3982                         if (x == _copied_locations.end()) {
3983                                 _copied_locations.push_back (CopiedLocationMarkerInfo (l, *i));
3984                         } else {
3985                                 (*x).markers.push_back (*i);
3986                                 (*x).move_both = true;
3987                         }
3988                 }
3989
3990         }
3991 }
3992
3993 void
3994 MarkerDrag::setup_pointer_frame_offset ()
3995 {
3996         bool is_start;
3997         Location *location = _editor->find_location_from_marker (_marker, is_start);
3998         _pointer_frame_offset = raw_grab_frame() - (is_start ? location->start() : location->end());
3999 }
4000
4001 void
4002 MarkerDrag::motion (GdkEvent* event, bool)
4003 {
4004         framecnt_t f_delta = 0;
4005         bool is_start;
4006         bool move_both = false;
4007         Location *real_location;
4008         Location *copy_location = 0;
4009         framecnt_t const sd = snap_delta (event->button.state);
4010
4011         framecnt_t const newframe = adjusted_frame (_drags->current_pointer_frame () + sd, event, true) - sd;
4012         framepos_t next = newframe;
4013
4014         if (Keyboard::modifier_state_contains (event->button.state, ArdourKeyboard::push_points_modifier ())) {
4015                 move_both = true;
4016         }
4017
4018         CopiedLocationInfo::iterator x;
4019
4020         /* find the marker we're dragging, and compute the delta */
4021
4022         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4023
4024                 copy_location = (*x).location;
4025
4026                 if (find (x->markers.begin(), x->markers.end(), _marker) != x->markers.end()) {
4027
4028                         /* this marker is represented by this
4029                          * CopiedLocationMarkerInfo
4030                          */
4031
4032                         if ((real_location = _editor->find_location_from_marker (_marker, is_start)) == 0) {
4033                                 /* que pasa ?? */
4034                                 return;
4035                         }
4036
4037                         if (real_location->is_mark()) {
4038                                 f_delta = newframe - copy_location->start();
4039                         } else {
4040
4041
4042                                 switch (_marker->type()) {
4043                                 case ArdourMarker::SessionStart:
4044                                 case ArdourMarker::RangeStart:
4045                                 case ArdourMarker::LoopStart:
4046                                 case ArdourMarker::PunchIn:
4047                                         f_delta = newframe - copy_location->start();
4048                                         break;
4049
4050                                 case ArdourMarker::SessionEnd:
4051                                 case ArdourMarker::RangeEnd:
4052                                 case ArdourMarker::LoopEnd:
4053                                 case ArdourMarker::PunchOut:
4054                                         f_delta = newframe - copy_location->end();
4055                                         break;
4056                                 default:
4057                                         /* what kind of marker is this ? */
4058                                         return;
4059                                 }
4060                         }
4061
4062                         break;
4063                 }
4064         }
4065
4066         if (x == _copied_locations.end()) {
4067                 /* hmm, impossible - we didn't find the dragged marker */
4068                 return;
4069         }
4070
4071         /* now move them all */
4072
4073         for (x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4074
4075                 copy_location = x->location;
4076
4077                 if ((real_location = _editor->find_location_from_marker (x->markers.front(), is_start)) == 0) {
4078                         continue;
4079                 }
4080
4081                 if (real_location->locked()) {
4082                         continue;
4083                 }
4084
4085                 if (copy_location->is_mark()) {
4086
4087                         /* now move it */
4088
4089                         copy_location->set_start (copy_location->start() + f_delta);
4090
4091                 } else {
4092
4093                         framepos_t new_start = copy_location->start() + f_delta;
4094                         framepos_t new_end = copy_location->end() + f_delta;
4095
4096                         if (is_start) { // start-of-range marker
4097
4098                                 if (move_both || (*x).move_both) {
4099                                         copy_location->set_start (new_start);
4100                                         copy_location->set_end (new_end);
4101                                 } else  if (new_start < copy_location->end()) {
4102                                         copy_location->set_start (new_start);
4103                                 } else if (newframe > 0) {
4104                                         //_editor->snap_to (next, RoundUpAlways, true);
4105                                         copy_location->set_end (next);
4106                                         copy_location->set_start (newframe);
4107                                 }
4108
4109                         } else { // end marker
4110
4111                                 if (move_both || (*x).move_both) {
4112                                         copy_location->set_end (new_end);
4113                                         copy_location->set_start (new_start);
4114                                 } else if (new_end > copy_location->start()) {
4115                                         copy_location->set_end (new_end);
4116                                 } else if (newframe > 0) {
4117                                         //_editor->snap_to (next, RoundDownAlways, true);
4118                                         copy_location->set_start (next);
4119                                         copy_location->set_end (newframe);
4120                                 }
4121                         }
4122                 }
4123
4124                 update_item (copy_location);
4125
4126                 /* now lookup the actual GUI items used to display this
4127                  * location and move them to wherever the copy of the location
4128                  * is now. This means that the logic in ARDOUR::Location is
4129                  * still enforced, even though we are not (yet) modifying
4130                  * the real Location itself.
4131                  */
4132
4133                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
4134
4135                 if (lm) {
4136                         lm->set_position (copy_location->start(), copy_location->end());
4137                 }
4138
4139         }
4140
4141         assert (!_copied_locations.empty());
4142
4143         show_verbose_cursor_time (newframe);
4144 }
4145
4146 void
4147 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
4148 {
4149         if (!movement_occurred) {
4150
4151                 if (was_double_click()) {
4152                         _editor->rename_marker (_marker);
4153                         return;
4154                 }
4155
4156                 /* just a click, do nothing but finish
4157                    off the selection process
4158                 */
4159
4160                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
4161                 switch (op) {
4162                 case Selection::Set:
4163                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
4164                                 _editor->selection->set (_marker);
4165                                 _selection_changed = true;
4166                         }
4167                         break;
4168
4169                 case Selection::Toggle:
4170                         /* we toggle on the button release, click only */
4171                         _editor->selection->toggle (_marker);
4172                         _selection_changed = true;
4173
4174                         break;
4175
4176                 case Selection::Extend:
4177                 case Selection::Add:
4178                         break;
4179                 }
4180
4181                 if (_selection_changed) {
4182                         _editor->begin_reversible_selection_op(X_("Select Marker Release"));
4183                         _editor->commit_reversible_selection_op();
4184                 }
4185
4186                 return;
4187         }
4188
4189         _editor->_dragging_edit_point = false;
4190
4191         XMLNode &before = _editor->session()->locations()->get_state();
4192         bool in_command = false;
4193
4194         MarkerSelection::iterator i;
4195         CopiedLocationInfo::iterator x;
4196         bool is_start;
4197
4198         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
4199              x != _copied_locations.end() && i != _editor->selection->markers.end();
4200              ++i, ++x) {
4201
4202                 Location * location = _editor->find_location_from_marker (*i, is_start);
4203
4204                 if (location) {
4205
4206                         if (location->locked()) {
4207                                 continue;
4208                         }
4209                         if (!in_command) {
4210                                 _editor->begin_reversible_command ( _("move marker") );
4211                                 in_command = true;
4212                         }
4213                         if (location->is_mark()) {
4214                                 location->set_start (((*x).location)->start());
4215                         } else {
4216                                 location->set (((*x).location)->start(), ((*x).location)->end());
4217                         }
4218                 }
4219         }
4220
4221         if (in_command) {
4222                 XMLNode &after = _editor->session()->locations()->get_state();
4223                 _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
4224                 _editor->commit_reversible_command ();
4225         }
4226 }
4227
4228 void
4229 MarkerDrag::aborted (bool movement_occurred)
4230 {
4231         if (!movement_occurred) {
4232                 return;
4233         }
4234
4235         for (CopiedLocationInfo::iterator x = _copied_locations.begin(); x != _copied_locations.end(); ++x) {
4236
4237                 /* move all markers to their original location */
4238
4239
4240                 for (vector<ArdourMarker*>::iterator m = x->markers.begin(); m != x->markers.end(); ++m) {
4241
4242                         bool is_start;
4243                         Location * location = _editor->find_location_from_marker (*m, is_start);
4244
4245                         if (location) {
4246                                 (*m)->set_position (is_start ? location->start() : location->end());
4247                         }
4248                 }
4249         }
4250 }
4251
4252 void
4253 MarkerDrag::update_item (Location*)
4254 {
4255         /* noop */
4256 }
4257
4258 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
4259         : Drag (e, i)
4260         , _fixed_grab_x (0.0)
4261         , _fixed_grab_y (0.0)
4262         , _cumulative_x_drag (0.0)
4263         , _cumulative_y_drag (0.0)
4264         , _pushing (false)
4265         , _final_index (0)
4266 {
4267         if (_zero_gain_fraction < 0.0) {
4268                 _zero_gain_fraction = gain_to_slider_position_with_max (dB_to_coefficient (0.0), Config->get_max_gain());
4269         }
4270
4271         DEBUG_TRACE (DEBUG::Drags, "New ControlPointDrag\n");
4272
4273         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
4274         assert (_point);
4275 }
4276
4277
4278 void
4279 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4280 {
4281         Drag::start_grab (event, _editor->cursors()->fader);
4282
4283         // start the grab at the center of the control point so
4284         // the point doesn't 'jump' to the mouse after the first drag
4285         _fixed_grab_x = _point->get_x();
4286         _fixed_grab_y = _point->get_y();
4287
4288         framepos_t pos = _editor->pixel_to_sample (_fixed_grab_x);
4289         setup_snap_delta (pos);
4290
4291         float const fraction = 1 - (_point->get_y() / _point->line().height());
4292         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (fraction));
4293
4294         _pushing = Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::push_points_modifier ());
4295
4296         if (!_point->can_slide ()) {
4297                 _x_constrained = true;
4298         }
4299 }
4300
4301 void
4302 ControlPointDrag::motion (GdkEvent* event, bool first_motion)
4303 {
4304         double dx = _drags->current_pointer_x() - last_pointer_x();
4305         double dy = current_pointer_y() - last_pointer_y();
4306         bool need_snap = true;
4307
4308         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4309                 dx *= 0.1;
4310                 dy *= 0.1;
4311                 need_snap = false;
4312         }
4313
4314         /* coordinate in pixels relative to the start of the region (for region-based automation)
4315            or track (for track-based automation) */
4316         double cx = _fixed_grab_x + _cumulative_x_drag + dx;
4317         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4318
4319         // calculate zero crossing point. back off by .01 to stay on the
4320         // positive side of zero
4321         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
4322
4323         if (_x_constrained) {
4324                 cx = _fixed_grab_x;
4325         }
4326         if (_y_constrained) {
4327                 cy = _fixed_grab_y;
4328         }
4329
4330         _cumulative_x_drag = cx - _fixed_grab_x;
4331         _cumulative_y_drag = cy - _fixed_grab_y;
4332
4333         cx = max (0.0, cx);
4334         cy = max (0.0, cy);
4335         cy = min ((double) _point->line().height(), cy);
4336
4337         // make sure we hit zero when passing through
4338         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
4339                 cy = zero_gain_y;
4340         }
4341
4342         framepos_t cx_frames = _editor->pixel_to_sample (cx) + snap_delta (event->button.state);
4343
4344         if (!_x_constrained && need_snap) {
4345                 _editor->snap_to_with_modifier (cx_frames, event);
4346         }
4347
4348         cx_frames -= snap_delta (event->button.state);
4349         cx_frames = min (cx_frames, _point->line().maximum_time());
4350
4351         float const fraction = 1.0 - (cy / _point->line().height());
4352
4353         if (first_motion) {
4354                 float const initial_fraction = 1.0 - (_fixed_grab_y / _point->line().height());
4355                 _editor->begin_reversible_command (_("automation event move"));
4356                 _point->line().start_drag_single (_point, _fixed_grab_x, initial_fraction);
4357         }
4358         pair<double, float> result;
4359         result = _point->line().drag_motion (_editor->sample_to_pixel_unrounded (cx_frames), fraction, false, _pushing, _final_index);
4360
4361         show_verbose_cursor_text (_point->line().get_verbose_cursor_string (result.second));
4362 }
4363
4364 void
4365 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
4366 {
4367         if (!movement_occurred) {
4368
4369                 /* just a click */
4370                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::ModifierMask (Keyboard::TertiaryModifier))) {
4371                         _editor->reset_point_selection ();
4372                 }
4373
4374         } else {
4375                 _point->line().end_drag (_pushing, _final_index);
4376                 _editor->commit_reversible_command ();
4377         }
4378 }
4379
4380 void
4381 ControlPointDrag::aborted (bool)
4382 {
4383         _point->line().reset ();
4384 }
4385
4386 bool
4387 ControlPointDrag::active (Editing::MouseMode m)
4388 {
4389         if (m == Editing::MouseDraw) {
4390                 /* always active in mouse draw */
4391                 return true;
4392         }
4393
4394         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
4395         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
4396 }
4397
4398 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
4399         : Drag (e, i)
4400         , _line (0)
4401         , _fixed_grab_x (0.0)
4402         , _fixed_grab_y (0.0)
4403         , _cumulative_y_drag (0)
4404         , _before (0)
4405         , _after (0)
4406 {
4407         DEBUG_TRACE (DEBUG::Drags, "New LineDrag\n");
4408 }
4409
4410 void
4411 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4412 {
4413         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
4414         assert (_line);
4415
4416         _item = &_line->grab_item ();
4417
4418         /* need to get x coordinate in terms of parent (TimeAxisItemView)
4419            origin, and ditto for y.
4420         */
4421
4422         double mx = event->button.x;
4423         double my = event->button.y;
4424
4425         _line->grab_item().canvas_to_item (mx, my);
4426
4427         framecnt_t const frame_within_region = (framecnt_t) floor (mx * _editor->samples_per_pixel);
4428
4429         if (!_line->control_points_adjacent (frame_within_region, _before, _after)) {
4430                 /* no adjacent points */
4431                 return;
4432         }
4433
4434         Drag::start_grab (event, _editor->cursors()->fader);
4435
4436         /* store grab start in item frame */
4437         double const bx = _line->nth (_before)->get_x();
4438         double const ax = _line->nth (_after)->get_x();
4439         double const click_ratio = (ax - mx) / (ax - bx);
4440
4441         double const cy = ((_line->nth (_before)->get_y() * click_ratio) + (_line->nth (_after)->get_y() * (1 - click_ratio)));
4442
4443         _fixed_grab_x = mx;
4444         _fixed_grab_y = cy;
4445
4446         double fraction = 1.0 - (cy / _line->height());
4447
4448         show_verbose_cursor_text (_line->get_verbose_cursor_string (fraction));
4449 }
4450
4451 void
4452 LineDrag::motion (GdkEvent* event, bool first_move)
4453 {
4454         double dy = current_pointer_y() - last_pointer_y();
4455
4456         if (Keyboard::modifier_state_equals (event->button.state, ArdourKeyboard::fine_adjust_modifier ())) {
4457                 dy *= 0.1;
4458         }
4459
4460         double cy = _fixed_grab_y + _cumulative_y_drag + dy;
4461
4462         _cumulative_y_drag = cy - _fixed_grab_y;
4463
4464         cy = max (0.0, cy);
4465         cy = min ((double) _line->height(), cy);
4466
4467         double const fraction = 1.0 - (cy / _line->height());
4468         uint32_t ignored;
4469
4470         if (first_move) {
4471                 float const initial_fraction = 1.0 - (_fixed_grab_y / _line->height());
4472
4473                 _editor->begin_reversible_command (_("automation range move"));
4474                 _line->start_drag_line (_before, _after, initial_fraction);
4475         }
4476
4477         /* we are ignoring x position for this drag, so we can just pass in anything */
4478         pair<double, float> result;
4479
4480         result = _line->drag_motion (0, fraction, true, false, ignored);
4481         show_verbose_cursor_text (_line->get_verbose_cursor_string (result.second));
4482 }
4483
4484 void
4485 LineDrag::finished (GdkEvent* event, bool movement_occurred)
4486 {
4487         if (movement_occurred) {
4488                 motion (event, false);
4489                 _line->end_drag (false, 0);
4490                 _editor->commit_reversible_command ();
4491         } else {
4492                 /* add a new control point on the line */
4493
4494                 AutomationTimeAxisView* atv;
4495
4496                 if ((atv = dynamic_cast<AutomationTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4497                         framepos_t where = grab_frame ();
4498
4499                         double cx = 0;
4500                         double cy = _fixed_grab_y;
4501
4502                         _line->grab_item().item_to_canvas (cx, cy);
4503
4504                         atv->add_automation_event (event, where, cy, false);
4505                 } else if (dynamic_cast<AudioTimeAxisView*>(_editor->clicked_axisview) != 0) {
4506                         AudioRegionView* arv;
4507
4508                         if ((arv = dynamic_cast<AudioRegionView*>(_editor->clicked_regionview)) != 0) {
4509                                 arv->add_gain_point_event (&arv->get_gain_line()->grab_item(), event, false);
4510                         }
4511                 }
4512         }
4513 }
4514
4515 void
4516 LineDrag::aborted (bool)
4517 {
4518         _line->reset ();
4519 }
4520
4521 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
4522         : Drag (e, i),
4523           _line (0),
4524           _arv (0),
4525           _region_view_grab_x (0.0),
4526           _cumulative_x_drag (0),
4527           _before (0.0),
4528           _max_x (0)
4529 {
4530         DEBUG_TRACE (DEBUG::Drags, "New FeatureLineDrag\n");
4531 }
4532
4533 void
4534 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
4535 {
4536         Drag::start_grab (event);
4537
4538         _line = reinterpret_cast<Line*> (_item);
4539         assert (_line);
4540
4541         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
4542
4543         double cx = event->button.x;
4544         double cy = event->button.y;
4545
4546         _item->parent()->canvas_to_item (cx, cy);
4547
4548         /* store grab start in parent frame */
4549         _region_view_grab_x = cx;
4550
4551         _before = *(float*) _item->get_data ("position");
4552
4553         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4554
4555         _max_x = _editor->sample_to_pixel(_arv->get_duration());
4556 }
4557
4558 void
4559 FeatureLineDrag::motion (GdkEvent*, bool)
4560 {
4561         double dx = _drags->current_pointer_x() - last_pointer_x();
4562
4563         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
4564
4565         _cumulative_x_drag += dx;
4566
4567         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
4568
4569         if (cx > _max_x){
4570                 cx = _max_x;
4571         }
4572         else if(cx < 0){
4573                 cx = 0;
4574         }
4575
4576         boost::optional<ArdourCanvas::Rect> bbox = _line->bounding_box ();
4577         assert (bbox);
4578         _line->set (ArdourCanvas::Duple (cx, 2.0), ArdourCanvas::Duple (cx, bbox.get().height ()));
4579
4580         float *pos = new float;
4581         *pos = cx;
4582
4583         _line->set_data ("position", pos);
4584
4585         _before = cx;
4586 }
4587
4588 void
4589 FeatureLineDrag::finished (GdkEvent*, bool)
4590 {
4591         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
4592         _arv->update_transient(_before, _before);
4593 }
4594
4595 void
4596 FeatureLineDrag::aborted (bool)
4597 {
4598         //_line->reset ();
4599 }
4600
4601 RubberbandSelectDrag::RubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
4602         : Drag (e, i)
4603         , _vertical_only (false)
4604 {
4605         DEBUG_TRACE (DEBUG::Drags, "New RubberbandSelectDrag\n");
4606 }
4607
4608 void
4609 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4610 {
4611         Drag::start_grab (event);
4612         show_verbose_cursor_time (adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid()));
4613 }
4614
4615 void
4616 RubberbandSelectDrag::motion (GdkEvent* event, bool)
4617 {
4618         framepos_t start;
4619         framepos_t end;
4620         double y1;
4621         double y2;
4622
4623         framepos_t const pf = adjusted_current_frame (event, UIConfiguration::instance().get_rubberbanding_snaps_to_grid());
4624
4625         framepos_t grab = grab_frame ();
4626         if (UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4627                 _editor->snap_to_with_modifier (grab, event);
4628         } else {
4629                 grab = raw_grab_frame ();
4630         }
4631
4632         /* base start and end on initial click position */
4633
4634         if (pf < grab) {
4635                 start = pf;
4636                 end = grab;
4637         } else {
4638                 end = pf;
4639                 start = grab;
4640         }
4641
4642         if (current_pointer_y() < grab_y()) {
4643                 y1 = current_pointer_y();
4644                 y2 = grab_y();
4645         } else {
4646                 y2 = current_pointer_y();
4647                 y1 = grab_y();
4648         }
4649
4650         if (start != end || y1 != y2) {
4651
4652                 double x1 = _editor->sample_to_pixel (start);
4653                 double x2 = _editor->sample_to_pixel (end);
4654                 const double min_dimension = 2.0;
4655
4656                 if (_vertical_only) {
4657                         /* fixed 10 pixel width */
4658                         x2 = x1 + 10;
4659                 } else {
4660                         if (x2 < x1) {
4661                                 x2 = min (x1 - min_dimension, x2);
4662                         } else {
4663                                 x2 = max (x1 + min_dimension, x2);
4664                         }
4665                 }
4666
4667                 if (y2 < y1) {
4668                         y2 = min (y1 - min_dimension, y2);
4669                 } else {
4670                         y2 = max (y1 + min_dimension, y2);
4671                 }
4672
4673                 /* translate rect into item space and set */
4674
4675                 ArdourCanvas::Rect r (x1, y1, x2, y2);
4676
4677                 /* this drag is a _trackview_only == true drag, so the y1 and
4678                  * y2 (computed using current_pointer_y() and grab_y()) will be
4679                  * relative to the top of the trackview group). The
4680                  * rubberband rect has the same parent/scroll offset as the
4681                  * the trackview group, so we can use the "r" rect directly
4682                  * to set the shape of the rubberband.
4683                  */
4684
4685                 _editor->rubberband_rect->set (r);
4686                 _editor->rubberband_rect->show();
4687                 _editor->rubberband_rect->raise_to_top();
4688
4689                 show_verbose_cursor_time (pf);
4690
4691                 do_select_things (event, true);
4692         }
4693 }
4694
4695 void
4696 RubberbandSelectDrag::do_select_things (GdkEvent* event, bool drag_in_progress)
4697 {
4698         framepos_t x1;
4699         framepos_t x2;
4700         framepos_t grab = grab_frame ();
4701         framepos_t lpf = last_pointer_frame ();
4702
4703         if (!UIConfiguration::instance().get_rubberbanding_snaps_to_grid ()) {
4704                 grab = raw_grab_frame ();
4705                 lpf = _editor->pixel_to_sample_from_event (last_pointer_x());
4706         }
4707
4708         if (grab < lpf) {
4709                 x1 = grab;
4710                 x2 = lpf;
4711         } else {
4712                 x2 = grab;
4713                 x1 = lpf;
4714         }
4715
4716         double y1;
4717         double y2;
4718
4719         if (current_pointer_y() < grab_y()) {
4720                 y1 = current_pointer_y();
4721                 y2 = grab_y();
4722         } else {
4723                 y2 = current_pointer_y();
4724                 y1 = grab_y();
4725         }
4726
4727         select_things (event->button.state, x1, x2, y1, y2, drag_in_progress);
4728 }
4729
4730 void
4731 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
4732 {
4733         if (movement_occurred) {
4734
4735                 motion (event, false);
4736                 do_select_things (event, false);
4737
4738         } else {
4739
4740                 /* just a click */
4741
4742                 bool do_deselect = true;
4743                 MidiTimeAxisView* mtv;
4744
4745                 if ((mtv = dynamic_cast<MidiTimeAxisView*>(_editor->clicked_axisview)) != 0) {
4746                         /* MIDI track */
4747                         if (_editor->selection->empty() && _editor->mouse_mode == MouseDraw) {
4748                                 /* nothing selected */
4749                                 add_midi_region (mtv, true);
4750                                 do_deselect = false;
4751                         }
4752                 }
4753
4754                 /* do not deselect if Primary or Tertiary (toggle-select or
4755                  * extend-select are pressed.
4756                  */
4757
4758                 if (!Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier) &&
4759                     !Keyboard::modifier_state_contains (event->button.state, Keyboard::TertiaryModifier) &&
4760                     do_deselect) {
4761                         deselect_things ();
4762                 }
4763
4764         }
4765
4766         _editor->rubberband_rect->hide();
4767 }
4768
4769 void
4770 RubberbandSelectDrag::aborted (bool)
4771 {
4772         _editor->rubberband_rect->hide ();
4773 }
4774
4775 TimeFXDrag::TimeFXDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, std::list<RegionView*> const & v)
4776         : RegionDrag (e, i, p, v)
4777 {
4778         DEBUG_TRACE (DEBUG::Drags, "New TimeFXDrag\n");
4779 }
4780
4781 void
4782 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
4783 {
4784         Drag::start_grab (event, cursor);
4785
4786         _editor->get_selection().add (_primary);
4787
4788         framepos_t where = _primary->region()->position();
4789         setup_snap_delta (where);
4790
4791         show_verbose_cursor_duration (where, adjusted_current_frame (event), 0);
4792 }
4793
4794 void
4795 TimeFXDrag::motion (GdkEvent* event, bool)
4796 {
4797         RegionView* rv = _primary;
4798         StreamView* cv = rv->get_time_axis_view().view ();
4799
4800         pair<TimeAxisView*, double> const tv = _editor->trackview_by_y_position (grab_y());
4801         int layer = tv.first->layer_display() == Overlaid ? 0 : tv.second;
4802         int layers = tv.first->layer_display() == Overlaid ? 1 : cv->layers();
4803         framepos_t pf = _editor->canvas_event_sample (event) + snap_delta (event->button.state);
4804         _editor->snap_to_with_modifier (pf, event);
4805         pf -= snap_delta (event->button.state);
4806
4807         if (pf > rv->region()->position()) {
4808                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf, layers, layer);
4809         }
4810
4811         show_verbose_cursor_duration (_primary->region()->position(), pf, 0);
4812 }
4813
4814 void
4815 TimeFXDrag::finished (GdkEvent* event, bool movement_occurred)
4816 {
4817         /* this may have been a single click, no drag. We still want the dialog
4818            to show up in that case, so that the user can manually edit the
4819            parameters for the timestretch.
4820         */
4821
4822         float fraction = 1.0;
4823
4824         if (movement_occurred) {
4825
4826                 motion (event, false);
4827
4828                 _primary->get_time_axis_view().hide_timestretch ();
4829
4830                 framepos_t adjusted_frame_pos = adjusted_current_frame (event);
4831
4832                 if (adjusted_frame_pos < _primary->region()->position()) {
4833                         /* backwards drag of the left edge - not usable */
4834                         return;
4835                 }
4836
4837                 framecnt_t newlen = adjusted_frame_pos - _primary->region()->position();
4838
4839                 fraction = (double) newlen / (double) _primary->region()->length();
4840
4841 #ifndef USE_RUBBERBAND
4842                 // Soundtouch uses fraction / 100 instead of normal (/ 1)
4843                 if (_primary->region()->data_type() == DataType::AUDIO) {
4844                         fraction = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
4845                 }
4846 #endif
4847         }
4848
4849         if (!_editor->get_selection().regions.empty()) {
4850                 /* primary will already be included in the selection, and edit
4851                    group shared editing will propagate selection across
4852                    equivalent regions, so just use the current region
4853                    selection.
4854                 */
4855
4856                 if (_editor->time_stretch (_editor->get_selection().regions, fraction) == -1) {
4857                         error << _("An error occurred while executing time stretch operation") << endmsg;
4858                 }
4859         }
4860 }
4861
4862 void
4863 TimeFXDrag::aborted (bool)
4864 {
4865         _primary->get_time_axis_view().hide_timestretch ();
4866 }
4867
4868 ScrubDrag::ScrubDrag (Editor* e, ArdourCanvas::Item* i)
4869         : Drag (e, i)
4870 {
4871         DEBUG_TRACE (DEBUG::Drags, "New ScrubDrag\n");
4872 }
4873
4874 void
4875 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
4876 {
4877         Drag::start_grab (event);
4878 }
4879
4880 void
4881 ScrubDrag::motion (GdkEvent* /*event*/, bool)
4882 {
4883         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
4884 }
4885
4886 void
4887 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
4888 {
4889         if (movement_occurred && _editor->session()) {
4890                 /* make sure we stop */
4891                 _editor->session()->request_transport_speed (0.0);
4892         }
4893 }
4894
4895 void
4896 ScrubDrag::aborted (bool)
4897 {
4898         /* XXX: TODO */
4899 }
4900
4901 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
4902         : Drag (e, i)
4903         , _operation (o)
4904         , _add (false)
4905         , _time_selection_at_start (!_editor->get_selection().time.empty())
4906 {
4907         DEBUG_TRACE (DEBUG::Drags, "New SelectionDrag\n");
4908
4909         if (_time_selection_at_start) {
4910                 start_at_start = _editor->get_selection().time.start();
4911                 end_at_start = _editor->get_selection().time.end_frame();
4912         }
4913 }
4914
4915 void
4916 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
4917 {
4918         if (_editor->session() == 0) {
4919                 return;
4920         }
4921
4922         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
4923
4924         switch (_operation) {
4925         case CreateSelection:
4926                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
4927                         _add = true;
4928                 } else {
4929                         _add = false;
4930                 }
4931                 cursor = _editor->cursors()->selector;
4932                 Drag::start_grab (event, cursor);
4933                 break;
4934
4935         case SelectionStartTrim:
4936                 if (_editor->clicked_axisview) {
4937                         _editor->clicked_axisview->order_selection_trims (_item, true);
4938                 }
4939                 Drag::start_grab (event, _editor->cursors()->left_side_trim);
4940                 break;
4941
4942         case SelectionEndTrim:
4943                 if (_editor->clicked_axisview) {
4944                         _editor->clicked_axisview->order_selection_trims (_item, false);
4945                 }
4946                 Drag::start_grab (event, _editor->cursors()->right_side_trim);
4947                 break;
4948
4949         case SelectionMove:
4950                 Drag::start_grab (event, cursor);
4951                 break;
4952
4953         case SelectionExtend:
4954                 Drag::start_grab (event, cursor);
4955                 break;
4956         }
4957
4958         if (_operation == SelectionMove) {
4959                 show_verbose_cursor_time (_editor->selection->time[_editor->clicked_selection].start);
4960         } else {
4961                 show_verbose_cursor_time (adjusted_current_frame (event));
4962         }
4963 }
4964
4965 void
4966 SelectionDrag::setup_pointer_frame_offset ()
4967 {
4968         switch (_operation) {
4969         case CreateSelection:
4970                 _pointer_frame_offset = 0;
4971                 break;
4972
4973         case SelectionStartTrim:
4974         case SelectionMove:
4975                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].start;
4976                 break;
4977
4978         case SelectionEndTrim:
4979                 _pointer_frame_offset = raw_grab_frame() - _editor->selection->time[_editor->clicked_selection].end;
4980                 break;
4981
4982         case SelectionExtend:
4983                 break;
4984         }
4985 }
4986
4987 void
4988 SelectionDrag::motion (GdkEvent* event, bool first_move)
4989 {
4990         framepos_t start = 0;
4991         framepos_t end = 0;
4992         framecnt_t length = 0;
4993         framecnt_t distance = 0;
4994
4995         framepos_t const pending_position = adjusted_current_frame (event);
4996
4997         if (_operation != CreateSelection && pending_position == last_pointer_frame()) {
4998                 return;
4999         }
5000
5001         switch (_operation) {
5002         case CreateSelection:
5003         {
5004                 framepos_t grab = grab_frame ();
5005
5006                 if (first_move) {
5007                         grab = adjusted_current_frame (event, false);
5008                         if (grab < pending_position) {
5009                                 _editor->snap_to (grab, RoundDownMaybe);
5010                         }  else {
5011                                 _editor->snap_to (grab, RoundUpMaybe);
5012                         }
5013                 }
5014
5015                 if (pending_position < grab) {
5016                         start = pending_position;
5017                         end = grab;
5018                 } else {
5019                         end = pending_position;
5020                         start = grab;
5021                 }
5022
5023                 /* first drag: Either add to the selection
5024                    or create a new selection
5025                 */
5026
5027                 if (first_move) {
5028
5029                         if (_add) {
5030
5031                                 /* adding to the selection */
5032                                 _editor->set_selected_track_as_side_effect (Selection::Add);
5033                                 _editor->clicked_selection = _editor->selection->add (start, end);
5034                                 _add = false;
5035
5036                         } else {
5037
5038                                 /* new selection */
5039
5040                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5041                                         _editor->set_selected_track_as_side_effect (Selection::Set);
5042                                 }
5043
5044                                 _editor->clicked_selection = _editor->selection->set (start, end);
5045                         }
5046                 }
5047
5048                 //if user is selecting a range on an automation track, bail out here before we get to the grouped stuff,
5049                 // because the grouped stuff will start working on tracks (routeTAVs), and end up removing this
5050                 AutomationTimeAxisView *atest = dynamic_cast<AutomationTimeAxisView *>(_editor->clicked_axisview);
5051                 if (atest) {
5052                         _editor->selection->add (atest);
5053                         break;
5054                 }
5055
5056                 /* select all tracks within the rectangle that we've marked out so far */
5057                 TrackViewList new_selection;
5058                 TrackViewList& all_tracks (_editor->track_views);
5059
5060                 ArdourCanvas::Coord const top = grab_y();
5061                 ArdourCanvas::Coord const bottom = current_pointer_y();
5062
5063                 if (top >= 0 && bottom >= 0) {
5064
5065                         //first, find the tracks that are covered in the y range selection
5066                         for (TrackViewList::const_iterator i = all_tracks.begin(); i != all_tracks.end(); ++i) {
5067                                 if ((*i)->covered_by_y_range (top, bottom)) {
5068                                         new_selection.push_back (*i);
5069                                 }
5070                         }
5071
5072                         //now find any tracks that are GROUPED with the tracks we selected
5073                         TrackViewList grouped_add = new_selection;
5074                         for (TrackViewList::const_iterator i = new_selection.begin(); i != new_selection.end(); ++i) {
5075                                 RouteTimeAxisView *n = dynamic_cast<RouteTimeAxisView *>(*i);
5076                                 if ( n && n->route()->route_group() && n->route()->route_group()->is_active() && n->route()->route_group()->enabled_property (ARDOUR::Properties::select.property_id) ) {
5077                                         for (TrackViewList::const_iterator j = all_tracks.begin(); j != all_tracks.end(); ++j) {
5078                                                 RouteTimeAxisView *check = dynamic_cast<RouteTimeAxisView *>(*j);
5079                                                 if ( check && (n != check) && (check->route()->route_group() == n->route()->route_group()) )
5080                                                         grouped_add.push_back (*j);
5081                                         }
5082                                 }
5083                         }
5084
5085                         //now compare our list with the current selection, and add or remove as necessary
5086                         //( NOTE: most mouse moves don't change the selection so we can't just SET it for every mouse move; it gets clunky )
5087                         TrackViewList tracks_to_add;
5088                         TrackViewList tracks_to_remove;
5089                         for (TrackViewList::const_iterator i = grouped_add.begin(); i != grouped_add.end(); ++i)
5090                                 if ( !_editor->selection->tracks.contains ( *i ) )
5091                                         tracks_to_add.push_back ( *i );
5092                         for (TrackViewList::const_iterator i = _editor->selection->tracks.begin(); i != _editor->selection->tracks.end(); ++i)
5093                                 if ( !grouped_add.contains ( *i ) )
5094                                         tracks_to_remove.push_back ( *i );
5095                         _editor->selection->add(tracks_to_add);
5096                         _editor->selection->remove(tracks_to_remove);
5097
5098                 }
5099         }
5100         break;
5101
5102         case SelectionStartTrim:
5103
5104                 end = _editor->selection->time[_editor->clicked_selection].end;
5105
5106                 if (pending_position > end) {
5107                         start = end;
5108                 } else {
5109                         start = pending_position;
5110                 }
5111                 break;
5112
5113         case SelectionEndTrim:
5114
5115                 start = _editor->selection->time[_editor->clicked_selection].start;
5116
5117                 if (pending_position < start) {
5118                         end = start;
5119                 } else {
5120                         end = pending_position;
5121                 }
5122
5123                 break;
5124
5125         case SelectionMove:
5126
5127                 start = _editor->selection->time[_editor->clicked_selection].start;
5128                 end = _editor->selection->time[_editor->clicked_selection].end;
5129
5130                 length = end - start;
5131                 distance = pending_position - start;
5132                 start = pending_position;
5133                 _editor->snap_to (start);
5134
5135                 end = start + length;
5136
5137                 break;
5138
5139         case SelectionExtend:
5140                 break;
5141         }
5142
5143         if (start != end) {
5144                 switch (_operation) {
5145                 case SelectionMove:
5146                         if (_time_selection_at_start) {
5147                                 _editor->selection->move_time (distance);
5148                         }
5149                         break;
5150                 default:
5151                         _editor->selection->replace (_editor->clicked_selection, start, end);
5152                 }
5153         }
5154
5155         if (_operation == SelectionMove) {
5156                 show_verbose_cursor_time(start);
5157         } else {
5158                 show_verbose_cursor_time(pending_position);
5159         }
5160 }
5161
5162 void
5163 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
5164 {
5165         Session* s = _editor->session();
5166
5167         _editor->begin_reversible_selection_op (X_("Change Time Selection"));
5168         if (movement_occurred) {
5169                 motion (event, false);
5170                 /* XXX this is not object-oriented programming at all. ick */
5171                 if (_editor->selection->time.consolidate()) {
5172                         _editor->selection->TimeChanged ();
5173                 }
5174
5175                 /* XXX what if its a music time selection? */
5176                 if (s) {
5177                         if (s->get_play_range() && s->transport_rolling()) {
5178                                 s->request_play_range (&_editor->selection->time, true);
5179                         } else if (!s->config.get_external_sync()) {
5180                                 if (UIConfiguration::instance().get_follow_edits() && !s->transport_rolling()) {
5181                                         if (_operation == SelectionEndTrim)
5182                                                 _editor->maybe_locate_with_edit_preroll( _editor->get_selection().time.end_frame());
5183                                         else
5184                                                 s->request_locate (_editor->get_selection().time.start());
5185                                 }
5186                         }
5187
5188                         if (_editor->get_selection().time.length() != 0) {
5189                                 s->set_range_selection (_editor->get_selection().time.start(), _editor->get_selection().time.end_frame());
5190                         } else {
5191                                 s->clear_range_selection ();
5192                         }
5193                 }
5194
5195         } else {
5196                 /* just a click, no pointer movement.
5197                  */
5198
5199                 if (_operation == SelectionExtend) {
5200                         if (_time_selection_at_start) {
5201                                 framepos_t pos = adjusted_current_frame (event, false);
5202                                 framepos_t start = min (pos, start_at_start);
5203                                 framepos_t end = max (pos, end_at_start);
5204                                 _editor->selection->set (start, end);
5205                         }
5206                 } else {
5207                         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5208                                 if (_editor->clicked_selection) {
5209                                         _editor->selection->remove (_editor->clicked_selection);
5210                                 }
5211                         } else {
5212                                 if (!_editor->clicked_selection) {
5213                                         _editor->selection->clear_time();
5214                                 }
5215                         }
5216                 }
5217
5218                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
5219                         _editor->selection->set (_editor->clicked_axisview);
5220                 }
5221
5222                 if (s && s->get_play_range () && s->transport_rolling()) {
5223                         s->request_stop (false, false);
5224                 }
5225
5226         }
5227
5228         _editor->stop_canvas_autoscroll ();
5229         _editor->clicked_selection = 0;
5230         _editor->commit_reversible_selection_op ();
5231 }
5232
5233 void
5234 SelectionDrag::aborted (bool)
5235 {
5236         /* XXX: TODO */
5237 }
5238
5239 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
5240         : Drag (e, i, false),
5241           _operation (o),
5242           _copy (false)
5243 {
5244         DEBUG_TRACE (DEBUG::Drags, "New RangeMarkerBarDrag\n");
5245
5246         _drag_rect = new ArdourCanvas::Rectangle (_editor->time_line_group,
5247                                                   ArdourCanvas::Rect (0.0, 0.0, 0.0,
5248                                                                       physical_screen_height (_editor->current_toplevel()->get_window())));
5249         _drag_rect->hide ();
5250
5251         _drag_rect->set_fill_color (UIConfiguration::instance().color ("range drag rect"));
5252         _drag_rect->set_outline_color (UIConfiguration::instance().color ("range drag rect"));
5253 }
5254
5255 RangeMarkerBarDrag::~RangeMarkerBarDrag()
5256 {
5257         /* normal canvas items will be cleaned up when their parent group is deleted. But
5258            this item is created as the child of a long-lived parent group, and so we
5259            need to explicitly delete it.
5260         */
5261         delete _drag_rect;
5262 }
5263
5264 void
5265 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5266 {
5267         if (_editor->session() == 0) {
5268                 return;
5269         }
5270
5271         Gdk::Cursor* cursor = MouseCursors::invalid_cursor();
5272
5273         if (!_editor->temp_location) {
5274                 _editor->temp_location = new Location (*_editor->session());
5275         }
5276
5277         switch (_operation) {
5278         case CreateSkipMarker:
5279         case CreateRangeMarker:
5280         case CreateTransportMarker:
5281         case CreateCDMarker:
5282
5283                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::CopyModifier)) {
5284                         _copy = true;
5285                 } else {
5286                         _copy = false;
5287                 }
5288                 cursor = _editor->cursors()->selector;
5289                 break;
5290         }
5291
5292         Drag::start_grab (event, cursor);
5293
5294         show_verbose_cursor_time (adjusted_current_frame (event));
5295 }
5296
5297 void
5298 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
5299 {
5300         framepos_t start = 0;
5301         framepos_t end = 0;
5302         ArdourCanvas::Rectangle *crect;
5303
5304         switch (_operation) {
5305         case CreateSkipMarker:
5306                 crect = _editor->range_bar_drag_rect;
5307                 break;
5308         case CreateRangeMarker:
5309                 crect = _editor->range_bar_drag_rect;
5310                 break;
5311         case CreateTransportMarker:
5312                 crect = _editor->transport_bar_drag_rect;
5313                 break;
5314         case CreateCDMarker:
5315                 crect = _editor->cd_marker_bar_drag_rect;
5316                 break;
5317         default:
5318                 error << string_compose (_("programming_error: %1"), "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()") << endmsg;
5319                 return;
5320                 break;
5321         }
5322
5323         framepos_t const pf = adjusted_current_frame (event);
5324
5325         if (_operation == CreateSkipMarker || _operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
5326                 framepos_t grab = grab_frame ();
5327                 _editor->snap_to (grab);
5328
5329                 if (pf < grab_frame()) {
5330                         start = pf;
5331                         end = grab;
5332                 } else {
5333                         end = pf;
5334                         start = grab;
5335                 }
5336
5337                 /* first drag: Either add to the selection
5338                    or create a new selection.
5339                 */
5340
5341                 if (first_move) {
5342
5343                         _editor->temp_location->set (start, end);
5344
5345                         crect->show ();
5346
5347                         update_item (_editor->temp_location);
5348                         _drag_rect->show();
5349                         //_drag_rect->raise_to_top();
5350
5351                 }
5352         }
5353
5354         if (start != end) {
5355                 _editor->temp_location->set (start, end);
5356
5357                 double x1 = _editor->sample_to_pixel (start);
5358                 double x2 = _editor->sample_to_pixel (end);
5359                 crect->set_x0 (x1);
5360                 crect->set_x1 (x2);
5361
5362                 update_item (_editor->temp_location);
5363         }
5364
5365         show_verbose_cursor_time (pf);
5366
5367 }
5368
5369 void
5370 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
5371 {
5372         Location * newloc = 0;
5373         string rangename;
5374         int flags;
5375
5376         if (movement_occurred) {
5377                 motion (event, false);
5378                 _drag_rect->hide();
5379
5380                 switch (_operation) {
5381                 case CreateSkipMarker:
5382                 case CreateRangeMarker:
5383                 case CreateCDMarker:
5384                     {
5385                         XMLNode &before = _editor->session()->locations()->get_state();
5386                         if (_operation == CreateSkipMarker) {
5387                                 _editor->begin_reversible_command (_("new skip marker"));
5388                                 _editor->session()->locations()->next_available_name(rangename,_("skip"));
5389                                 flags = Location::IsRangeMarker | Location::IsSkip;
5390                                 _editor->range_bar_drag_rect->hide();
5391                         } else if (_operation == CreateCDMarker) {
5392                                 _editor->session()->locations()->next_available_name(rangename, _("CD"));
5393                                 _editor->begin_reversible_command (_("new CD marker"));
5394                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
5395                                 _editor->cd_marker_bar_drag_rect->hide();
5396                         } else {
5397                                 _editor->begin_reversible_command (_("new skip marker"));
5398                                 _editor->session()->locations()->next_available_name(rangename, _("unnamed"));
5399                                 flags = Location::IsRangeMarker;
5400                                 _editor->range_bar_drag_rect->hide();
5401                         }
5402                         newloc = new Location (
5403                                 *_editor->session(), _editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags
5404                                 );
5405
5406                         _editor->session()->locations()->add (newloc, true);
5407                         XMLNode &after = _editor->session()->locations()->get_state();
5408                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
5409                         _editor->commit_reversible_command ();
5410                         break;
5411                     }
5412
5413                 case CreateTransportMarker:
5414                         // popup menu to pick loop or punch
5415                         _editor->new_transport_marker_context_menu (&event->button, _item);
5416                         break;
5417                 }
5418
5419         } else {
5420
5421                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
5422
5423                 if (_operation == CreateTransportMarker) {
5424
5425                         /* didn't drag, so just locate */
5426
5427                         _editor->session()->request_locate (grab_frame(), _editor->session()->transport_rolling());
5428
5429                 } else if (_operation == CreateCDMarker) {
5430
5431                         /* didn't drag, but mark is already created so do
5432                          * nothing */
5433
5434                 } else { /* operation == CreateRangeMarker || CreateSkipMarker */
5435
5436                         framepos_t start;
5437                         framepos_t end;
5438
5439                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
5440
5441                         if (end == max_framepos) {
5442                                 end = _editor->session()->current_end_frame ();
5443                         }
5444
5445                         if (start == max_framepos) {
5446                                 start = _editor->session()->current_start_frame ();
5447                         }
5448
5449                         switch (_editor->mouse_mode) {
5450                         case MouseObject:
5451                                 /* find the two markers on either side and then make the selection from it */
5452                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set, false);
5453                                 break;
5454
5455                         case MouseRange:
5456                                 /* find the two markers on either side of the click and make the range out of it */
5457                                 _editor->selection->set (start, end);
5458                                 break;
5459
5460                         default:
5461                                 break;
5462                         }
5463                 }
5464         }
5465
5466         _editor->stop_canvas_autoscroll ();
5467 }
5468
5469 void
5470 RangeMarkerBarDrag::aborted (bool movement_occurred)
5471 {
5472         if (movement_occurred) {
5473                 _drag_rect->hide ();
5474         }
5475 }
5476
5477 void
5478 RangeMarkerBarDrag::update_item (Location* location)
5479 {
5480         double const x1 = _editor->sample_to_pixel (location->start());
5481         double const x2 = _editor->sample_to_pixel (location->end());
5482
5483         _drag_rect->set_x0 (x1);
5484         _drag_rect->set_x1 (x2);
5485 }
5486
5487 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
5488         : Drag (e, i)
5489         , _cumulative_dx (0)
5490         , _cumulative_dy (0)
5491         , _was_selected (false)
5492 {
5493         DEBUG_TRACE (DEBUG::Drags, "New NoteDrag\n");
5494
5495         _primary = reinterpret_cast<NoteBase*> (_item->get_data ("notebase"));
5496         assert (_primary);
5497         _region = &_primary->region_view ();
5498         _note_height = _region->midi_stream_view()->note_height ();
5499 }
5500
5501 void
5502 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
5503 {
5504         Drag::start_grab (event);
5505         setup_snap_delta (_region->source_beats_to_absolute_frames (_primary->note()->time ()));
5506
5507         if (!(_was_selected = _primary->selected())) {
5508
5509                 /* tertiary-click means extend selection - we'll do that on button release,
5510                    so don't add it here, because otherwise we make it hard to figure
5511                    out the "extend-to" range.
5512                 */
5513
5514                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
5515
5516                 if (!extend) {
5517                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
5518
5519                         if (add) {
5520                                 _region->note_selected (_primary, true);
5521                         } else {
5522                                 _editor->get_selection().clear_points();
5523                                 _region->unique_select (_primary);
5524                         }
5525                 }
5526         }
5527 }
5528
5529 /** @return Current total drag x change in frames */
5530 frameoffset_t
5531 NoteDrag::total_dx (const guint state) const
5532 {
5533         /* dx in frames */
5534         frameoffset_t const dx = _editor->pixel_to_sample (_drags->current_pointer_x() - grab_x());
5535
5536         /* primary note time */
5537         frameoffset_t const n = _region->source_beats_to_absolute_frames (_primary->note()->time ());
5538
5539         /* new time of the primary note in session frames */
5540         frameoffset_t st = n + dx + snap_delta (state);
5541
5542         framepos_t const rp = _region->region()->position ();
5543
5544         /* prevent the note being dragged earlier than the region's position */
5545         st = max (st, rp);
5546
5547         /* possibly snap and return corresponding delta */
5548
5549         bool snap = true;
5550
5551         if (ArdourKeyboard::indicates_snap (state)) {
5552                 if (_editor->snap_mode () != SnapOff) {
5553                         snap = false;
5554                 }
5555         } else {
5556                 if (_editor->snap_mode () == SnapOff) {
5557                         snap = false;
5558                         /* inverted logic here - we;re in snapoff but we've pressed the snap delta modifier */
5559                         if (ArdourKeyboard::indicates_snap_delta (state)) {
5560                                 snap = true;
5561                         }
5562                 }
5563         }
5564
5565         frameoffset_t ret;
5566         if (snap) {
5567                 bool const ensure_snap = _editor->snap_mode () != SnapMagnetic;
5568                 ret =  _region->snap_frame_to_frame (st - rp, ensure_snap) + rp - n - snap_delta (state);
5569         } else {
5570                 ret = st - n - snap_delta (state);
5571         }
5572         return ret;
5573 }
5574
5575 /** @return Current total drag y change in note number */
5576 int8_t
5577 NoteDrag::total_dy () const
5578 {
5579         MidiStreamView* msv = _region->midi_stream_view ();
5580         double const y = _region->midi_view()->y_position ();
5581         /* new current note */
5582         uint8_t n = msv->y_to_note (current_pointer_y () - y);
5583         /* clamp */
5584         n = max (msv->lowest_note(), n);
5585         n = min (msv->highest_note(), n);
5586         /* and work out delta */
5587         return n - msv->y_to_note (grab_y() - y);
5588 }
5589
5590 void
5591 NoteDrag::motion (GdkEvent * event, bool)
5592 {
5593         /* Total change in x and y since the start of the drag */
5594         frameoffset_t const dx = total_dx (event->button.state);
5595         int8_t const dy = total_dy ();
5596
5597         /* Now work out what we have to do to the note canvas items to set this new drag delta */
5598         double const tdx = _editor->sample_to_pixel (dx) - _cumulative_dx;
5599         double const tdy = -dy * _note_height - _cumulative_dy;
5600
5601         if (tdx || tdy) {
5602                 _cumulative_dx += tdx;
5603                 _cumulative_dy += tdy;
5604
5605                 int8_t note_delta = total_dy();
5606
5607                 _region->move_selection (tdx, tdy, note_delta);
5608
5609                 /* the new note value may be the same as the old one, but we
5610                  * don't know what that means because the selection may have
5611                  * involved more than one note and we might be doing something
5612                  * odd with them. so show the note value anyway, always.
5613                  */
5614
5615                 uint8_t new_note = min (max (_primary->note()->note() + note_delta, 0), 127);
5616
5617                 _region->show_verbose_cursor_for_new_note_value (_primary->note(), new_note);
5618         }
5619 }
5620
5621 void
5622 NoteDrag::finished (GdkEvent* ev, bool moved)
5623 {
5624         if (!moved) {
5625                 /* no motion - select note */
5626
5627                 if (_editor->current_mouse_mode() == Editing::MouseContent ||
5628                     _editor->current_mouse_mode() == Editing::MouseDraw) {
5629
5630                         bool changed = false;
5631
5632                         if (_was_selected) {
5633                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5634                                 if (add) {
5635                                         _region->note_deselected (_primary);
5636                                         changed = true;
5637                                 } else {
5638                                         _editor->get_selection().clear_points();
5639                                         _region->unique_select (_primary);
5640                                         changed = true;
5641                                 }
5642                         } else {
5643                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
5644                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
5645
5646                                 if (!extend && !add && _region->selection_size() > 1) {
5647                                         _editor->get_selection().clear_points();
5648                                         _region->unique_select (_primary);
5649                                         changed = true;
5650                                 } else if (extend) {
5651                                         _region->note_selected (_primary, true, true);
5652                                         changed = true;
5653                                 } else {
5654                                         /* it was added during button press */
5655                                         changed = true;
5656
5657                                 }
5658                         }
5659
5660                         if (changed) {
5661                                 _editor->begin_reversible_selection_op(X_("Select Note Release"));
5662                                 _editor->commit_reversible_selection_op();
5663                         }
5664                 }
5665         } else {
5666                 _region->note_dropped (_primary, total_dx (ev->button.state), total_dy());
5667         }
5668 }
5669
5670 void
5671 NoteDrag::aborted (bool)
5672 {
5673         /* XXX: TODO */
5674 }
5675
5676 /** Make an AutomationRangeDrag for lines in an AutomationTimeAxisView */
5677 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, AutomationTimeAxisView* atv, list<AudioRange> const & r)
5678         : Drag (editor, atv->base_item ())
5679         , _ranges (r)
5680         , _y_origin (atv->y_position())
5681         , _nothing_to_drag (false)
5682 {
5683         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5684         setup (atv->lines ());
5685 }
5686
5687 /** Make an AutomationRangeDrag for region gain lines or MIDI controller regions */
5688 AutomationRangeDrag::AutomationRangeDrag (Editor* editor, RegionView* rv, list<AudioRange> const & r)
5689         : Drag (editor, rv->get_canvas_group ())
5690         , _ranges (r)
5691         , _y_origin (rv->get_time_axis_view().y_position())
5692         , _nothing_to_drag (false)
5693         , _integral (false)
5694 {
5695         DEBUG_TRACE (DEBUG::Drags, "New AutomationRangeDrag\n");
5696
5697         list<boost::shared_ptr<AutomationLine> > lines;
5698
5699         AudioRegionView*      audio_view;
5700         AutomationRegionView* automation_view;
5701         if ((audio_view = dynamic_cast<AudioRegionView*>(rv))) {
5702                 lines.push_back (audio_view->get_gain_line ());
5703         } else if ((automation_view = dynamic_cast<AutomationRegionView*>(rv))) {
5704                 lines.push_back (automation_view->line ());
5705                 _integral = true;
5706         } else {
5707                 error << _("Automation range drag created for invalid region type") << endmsg;
5708         }
5709
5710         setup (lines);
5711 }
5712
5713 /** @param lines AutomationLines to drag.
5714  *  @param offset Offset from the session start to the points in the AutomationLines.
5715  */
5716 void
5717 AutomationRangeDrag::setup (list<boost::shared_ptr<AutomationLine> > const & lines)
5718 {
5719         /* find the lines that overlap the ranges being dragged */
5720         list<boost::shared_ptr<AutomationLine> >::const_iterator i = lines.begin ();
5721         while (i != lines.end ()) {
5722                 list<boost::shared_ptr<AutomationLine> >::const_iterator j = i;
5723                 ++j;
5724
5725                 pair<framepos_t, framepos_t> r = (*i)->get_point_x_range ();
5726
5727                 /* check this range against all the AudioRanges that we are using */
5728                 list<AudioRange>::const_iterator k = _ranges.begin ();
5729                 while (k != _ranges.end()) {
5730                         if (k->coverage (r.first, r.second) != Evoral::OverlapNone) {
5731                                 break;
5732                         }
5733                         ++k;
5734                 }
5735
5736                 /* add it to our list if it overlaps at all */
5737                 if (k != _ranges.end()) {
5738                         Line n;
5739                         n.line = *i;
5740                         n.state = 0;
5741                         n.range = r;
5742                         _lines.push_back (n);
5743                 }
5744
5745                 i = j;
5746         }
5747
5748         /* Now ::lines contains the AutomationLines that somehow overlap our drag */
5749 }
5750
5751 double
5752 AutomationRangeDrag::y_fraction (boost::shared_ptr<AutomationLine> line, double global_y) const
5753 {
5754         return 1.0 - ((global_y - _y_origin) / line->height());
5755 }
5756
5757 double
5758 AutomationRangeDrag::value (boost::shared_ptr<AutomationList> list, double x) const
5759 {
5760         const double v = list->eval(x);
5761         return _integral ? rint(v) : v;
5762 }
5763
5764 void
5765 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
5766 {
5767         Drag::start_grab (event, cursor);
5768
5769         /* Get line states before we start changing things */
5770         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5771                 i->state = &i->line->get_state ();
5772                 i->original_fraction = y_fraction (i->line, current_pointer_y());
5773         }
5774
5775         if (_ranges.empty()) {
5776
5777                 /* No selected time ranges: drag all points */
5778                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5779                         uint32_t const N = i->line->npoints ();
5780                         for (uint32_t j = 0; j < N; ++j) {
5781                                 i->points.push_back (i->line->nth (j));
5782                         }
5783                 }
5784
5785         }
5786
5787         if (_nothing_to_drag) {
5788                 return;
5789         }
5790 }
5791
5792 void
5793 AutomationRangeDrag::motion (GdkEvent*, bool first_move)
5794 {
5795         if (_nothing_to_drag && !first_move) {
5796                 return;
5797         }
5798
5799         if (first_move) {
5800                 _editor->begin_reversible_command (_("automation range move"));
5801
5802                 if (!_ranges.empty()) {
5803
5804                         for (list<AudioRange>::const_iterator i = _ranges.begin(); i != _ranges.end(); ++i) {
5805
5806                                 framecnt_t const half = (i->start + i->end) / 2;
5807
5808                                 /* find the line that this audio range starts in */
5809                                 list<Line>::iterator j = _lines.begin();
5810                                 while (j != _lines.end() && (j->range.first > i->start || j->range.second < i->start)) {
5811                                         ++j;
5812                                 }
5813
5814                                 if (j != _lines.end()) {
5815                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5816
5817                                 /* j is the line that this audio range starts in; fade into it;
5818                                    64 samples length plucked out of thin air.
5819                                 */
5820
5821                                         framepos_t a = i->start + 64;
5822                                         if (a > half) {
5823                                                 a = half;
5824                                         }
5825
5826                                         double const p = j->line->time_converter().from (i->start - j->line->time_converter().origin_b ());
5827                                         double const q = j->line->time_converter().from (a - j->line->time_converter().origin_b ());
5828
5829                                         XMLNode &before = the_list->get_state();
5830                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5831                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5832
5833                                         if (add_p || add_q) {
5834                                                 _editor->session()->add_command (
5835                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5836                                         }
5837                                 }
5838
5839                                 /* same thing for the end */
5840
5841                                 j = _lines.begin();
5842                                 while (j != _lines.end() && (j->range.first > i->end || j->range.second < i->end)) {
5843                                         ++j;
5844                                 }
5845
5846                                 if (j != _lines.end()) {
5847                                         boost::shared_ptr<AutomationList> the_list = j->line->the_list ();
5848
5849                                         /* j is the line that this audio range starts in; fade out of it;
5850                                            64 samples length plucked out of thin air.
5851                                         */
5852
5853                                         framepos_t b = i->end - 64;
5854                                         if (b < half) {
5855                                                 b = half;
5856                                         }
5857
5858                                         double const p = j->line->time_converter().from (b - j->line->time_converter().origin_b ());
5859                                         double const q = j->line->time_converter().from (i->end - j->line->time_converter().origin_b ());
5860
5861                                         XMLNode &before = the_list->get_state();
5862                                         bool const add_p = the_list->editor_add (p, value (the_list, p), false);
5863                                         bool const add_q = the_list->editor_add (q, value (the_list, q), false);
5864
5865                                         if (add_p || add_q) {
5866                                                 _editor->session()->add_command (
5867                                                         new MementoCommand<AutomationList>(*the_list.get (), &before, &the_list->get_state()));
5868                                         }
5869                                 }
5870                         }
5871
5872                         _nothing_to_drag = true;
5873
5874                         /* Find all the points that should be dragged and put them in the relevant
5875                            points lists in the Line structs.
5876                         */
5877
5878                         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5879
5880                                 uint32_t const N = i->line->npoints ();
5881                                 for (uint32_t j = 0; j < N; ++j) {
5882
5883                                         /* here's a control point on this line */
5884                                         ControlPoint* p = i->line->nth (j);
5885                                         double const w = i->line->time_converter().to ((*p->model())->when) + i->line->time_converter().origin_b ();
5886
5887                                         /* see if it's inside a range */
5888                                         list<AudioRange>::const_iterator k = _ranges.begin ();
5889                                         while (k != _ranges.end() && (k->start >= w || k->end <= w)) {
5890                                                 ++k;
5891                                         }
5892
5893                                         if (k != _ranges.end()) {
5894                                                 /* dragging this point */
5895                                                 _nothing_to_drag = false;
5896                                                 i->points.push_back (p);
5897                                         }
5898                                 }
5899                         }
5900                 }
5901
5902                 for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5903                         i->line->start_drag_multiple (i->points, y_fraction (i->line, current_pointer_y()), i->state);
5904                 }
5905         }
5906
5907         for (list<Line>::iterator l = _lines.begin(); l != _lines.end(); ++l) {
5908                 float const f = y_fraction (l->line, current_pointer_y());
5909                 /* we are ignoring x position for this drag, so we can just pass in anything */
5910                 pair<double, float> result;
5911                 uint32_t ignored;
5912                 result = l->line->drag_motion (0, f, true, false, ignored);
5913                 show_verbose_cursor_text (l->line->get_verbose_cursor_relative_string (l->original_fraction, result.second));
5914         }
5915 }
5916
5917 void
5918 AutomationRangeDrag::finished (GdkEvent* event, bool motion_occurred)
5919 {
5920         if (_nothing_to_drag || !motion_occurred) {
5921                 return;
5922         }
5923
5924         motion (event, false);
5925         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5926                 i->line->end_drag (false, 0);
5927         }
5928
5929         _editor->commit_reversible_command ();
5930 }
5931
5932 void
5933 AutomationRangeDrag::aborted (bool)
5934 {
5935         for (list<Line>::iterator i = _lines.begin(); i != _lines.end(); ++i) {
5936                 i->line->reset ();
5937         }
5938 }
5939
5940 DraggingView::DraggingView (RegionView* v, RegionDrag* parent, TimeAxisView* itav)
5941         : view (v)
5942         , initial_time_axis_view (itav)
5943 {
5944         /* note that time_axis_view may be null if the regionview was created
5945          * as part of a copy operation.
5946          */
5947         time_axis_view = parent->find_time_axis_view (&v->get_time_axis_view ());
5948         layer = v->region()->layer ();
5949         initial_y = v->get_canvas_group()->position().y;
5950         initial_playlist = v->region()->playlist ();
5951         initial_position = v->region()->position ();
5952         initial_end = v->region()->position () + v->region()->length ();
5953 }
5954
5955 PatchChangeDrag::PatchChangeDrag (Editor* e, PatchChange* i, MidiRegionView* r)
5956         : Drag (e, i->canvas_item ())
5957         , _region_view (r)
5958         , _patch_change (i)
5959         , _cumulative_dx (0)
5960 {
5961         DEBUG_TRACE (DEBUG::Drags, string_compose ("New PatchChangeDrag, patch @ %1, grab @ %2\n",
5962                                                    _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time()),
5963                                                    grab_frame()));
5964 }
5965
5966 void
5967 PatchChangeDrag::motion (GdkEvent* ev, bool)
5968 {
5969         framepos_t f = adjusted_current_frame (ev);
5970         boost::shared_ptr<Region> r = _region_view->region ();
5971         f = max (f, r->position ());
5972         f = min (f, r->last_frame ());
5973
5974         framecnt_t const dxf = f - grab_frame(); // permitted dx in frames
5975         double const dxu = _editor->sample_to_pixel (dxf); // permitted fx in units
5976         _patch_change->move (ArdourCanvas::Duple (dxu - _cumulative_dx, 0));
5977         _cumulative_dx = dxu;
5978 }
5979
5980 void
5981 PatchChangeDrag::finished (GdkEvent* ev, bool movement_occurred)
5982 {
5983         if (!movement_occurred) {
5984                 return;
5985         }
5986
5987         boost::shared_ptr<Region> r (_region_view->region ());
5988         framepos_t f = adjusted_current_frame (ev);
5989         f = max (f, r->position ());
5990         f = min (f, r->last_frame ());
5991
5992         _region_view->move_patch_change (
5993                 *_patch_change,
5994                 _region_view->region_frames_to_region_beats (f - (r->position() - r->start()))
5995                 );
5996 }
5997
5998 void
5999 PatchChangeDrag::aborted (bool)
6000 {
6001         _patch_change->move (ArdourCanvas::Duple (-_cumulative_dx, 0));
6002 }
6003
6004 void
6005 PatchChangeDrag::setup_pointer_frame_offset ()
6006 {
6007         boost::shared_ptr<Region> region = _region_view->region ();
6008         _pointer_frame_offset = raw_grab_frame() - _region_view->source_beats_to_absolute_frames (_patch_change->patch()->time());
6009 }
6010
6011 MidiRubberbandSelectDrag::MidiRubberbandSelectDrag (Editor* e, MidiRegionView* rv)
6012         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6013         , _region_view (rv)
6014 {
6015
6016 }
6017
6018 void
6019 MidiRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool /*drag_in_progress*/)
6020 {
6021         _region_view->update_drag_selection (
6022                 x1, x2, y1, y2,
6023                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier));
6024 }
6025
6026 void
6027 MidiRubberbandSelectDrag::deselect_things ()
6028 {
6029         /* XXX */
6030 }
6031
6032 MidiVerticalSelectDrag::MidiVerticalSelectDrag (Editor* e, MidiRegionView* rv)
6033         : RubberbandSelectDrag (e, rv->get_canvas_group ())
6034         , _region_view (rv)
6035 {
6036         _vertical_only = true;
6037 }
6038
6039 void
6040 MidiVerticalSelectDrag::select_things (int button_state, framepos_t /*x1*/, framepos_t /*x2*/, double y1, double y2, bool /*drag_in_progress*/)
6041 {
6042         double const y = _region_view->midi_view()->y_position ();
6043
6044         y1 = max (0.0, y1 - y);
6045         y2 = max (0.0, y2 - y);
6046
6047         _region_view->update_vertical_drag_selection (
6048                 y1,
6049                 y2,
6050                 Keyboard::modifier_state_contains (button_state, Keyboard::TertiaryModifier)
6051                 );
6052 }
6053
6054 void
6055 MidiVerticalSelectDrag::deselect_things ()
6056 {
6057         /* XXX */
6058 }
6059
6060 EditorRubberbandSelectDrag::EditorRubberbandSelectDrag (Editor* e, ArdourCanvas::Item* i)
6061         : RubberbandSelectDrag (e, i)
6062 {
6063
6064 }
6065
6066 void
6067 EditorRubberbandSelectDrag::select_things (int button_state, framepos_t x1, framepos_t x2, double y1, double y2, bool drag_in_progress)
6068 {
6069         if (drag_in_progress) {
6070                 /* We just want to select things at the end of the drag, not during it */
6071                 return;
6072         }
6073
6074         Selection::Operation op = ArdourKeyboard::selection_type (button_state);
6075
6076         _editor->begin_reversible_selection_op (X_("rubberband selection"));
6077
6078         _editor->select_all_within (x1, x2 - 1, y1, y2, _editor->track_views, op, false);
6079
6080         _editor->commit_reversible_selection_op ();
6081 }
6082
6083 void
6084 EditorRubberbandSelectDrag::deselect_things ()
6085 {
6086         _editor->begin_reversible_selection_op (X_("Clear Selection (rubberband)"));
6087
6088         _editor->selection->clear_tracks();
6089         _editor->selection->clear_regions();
6090         _editor->selection->clear_points ();
6091         _editor->selection->clear_lines ();
6092         _editor->selection->clear_midi_notes ();
6093
6094         _editor->commit_reversible_selection_op();
6095 }
6096
6097 NoteCreateDrag::NoteCreateDrag (Editor* e, ArdourCanvas::Item* i, MidiRegionView* rv)
6098         : Drag (e, i)
6099         , _region_view (rv)
6100         , _drag_rect (0)
6101 {
6102         _note[0] = _note[1] = 0;
6103 }
6104
6105 NoteCreateDrag::~NoteCreateDrag ()
6106 {
6107         delete _drag_rect;
6108 }
6109
6110 framecnt_t
6111 NoteCreateDrag::grid_frames (framepos_t t) const
6112 {
6113         bool success;
6114         Evoral::Beats grid_beats = _editor->get_grid_type_as_beats (success, t);
6115         if (!success) {
6116                 grid_beats = Evoral::Beats(1);
6117         }
6118
6119         return _region_view->region_beats_to_region_frames (grid_beats);
6120 }
6121
6122 void
6123 NoteCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
6124 {
6125         Drag::start_grab (event, cursor);
6126
6127         _drag_rect = new ArdourCanvas::Rectangle (_region_view->get_canvas_group ());
6128
6129         framepos_t pf = _drags->current_pointer_frame ();
6130         framecnt_t const g = grid_frames (pf);
6131
6132         /* Hack so that we always snap to the note that we are over, instead of snapping
6133            to the next one if we're more than halfway through the one we're over.
6134         */
6135         if (_editor->snap_mode() == SnapNormal && pf > g / 2) {
6136                 pf -= g / 2;
6137         }
6138
6139         _note[0] = adjusted_frame (pf, event) - _region_view->region()->position ();
6140         _note[1] = _note[0];
6141
6142         MidiStreamView* sv = _region_view->midi_stream_view ();
6143         double const x = _editor->sample_to_pixel (_note[0]);
6144         double const y = sv->note_to_y (sv->y_to_note (y_to_region (event->button.y)));
6145
6146         _drag_rect->set (ArdourCanvas::Rect (x, y, x, y + floor (_region_view->midi_stream_view()->note_height ())));
6147         _drag_rect->set_outline_all ();
6148         _drag_rect->set_outline_color (0xffffff99);
6149         _drag_rect->set_fill_color (0xffffff66);
6150 }
6151
6152 void
6153 NoteCreateDrag::motion (GdkEvent* event, bool)
6154 {
6155         _note[1] = max ((framepos_t)0, adjusted_current_frame (event) - _region_view->region()->position ());
6156         double const x0 = _editor->sample_to_pixel (_note[0]);
6157         double const x1 = _editor->sample_to_pixel (_note[1]);
6158         _drag_rect->set_x0 (std::min(x0, x1));
6159         _drag_rect->set_x1 (std::max(x0, x1));
6160 }
6161
6162 void
6163 NoteCreateDrag::finished (GdkEvent*, bool had_movement)
6164 {
6165         if (!had_movement) {
6166                 return;
6167         }
6168
6169         framepos_t const start = min (_note[0], _note[1]);
6170         framecnt_t length = (framecnt_t) fabs ((double)(_note[0] - _note[1]));
6171
6172         framecnt_t const g = grid_frames (start);
6173         Evoral::Beats const one_tick = Evoral::Beats::ticks(1);
6174
6175         if (_editor->snap_mode() == SnapNormal && length < g) {
6176                 length = g;
6177         }
6178
6179         Evoral::Beats length_beats = max (
6180                 one_tick, _region_view->region_frames_to_region_beats (length) - one_tick);
6181
6182         _region_view->create_note_at (start, _drag_rect->y0(), length_beats, false);
6183 }
6184
6185 double
6186 NoteCreateDrag::y_to_region (double y) const
6187 {
6188         double x = 0;
6189         _region_view->get_canvas_group()->canvas_to_item (x, y);
6190         return y;
6191 }
6192
6193 void
6194 NoteCreateDrag::aborted (bool)
6195 {
6196
6197 }
6198
6199 CrossfadeEdgeDrag::CrossfadeEdgeDrag (Editor* e, AudioRegionView* rv, ArdourCanvas::Item* i, bool start_yn)
6200         : Drag (e, i)
6201         , arv (rv)
6202         , start (start_yn)
6203 {
6204         std::cout << ("CrossfadeEdgeDrag is DEPRECATED.  See TrimDrag::preserve_fade_anchor") << endl;
6205 }
6206
6207 void
6208 CrossfadeEdgeDrag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
6209 {
6210         Drag::start_grab (event, cursor);
6211 }
6212
6213 void
6214 CrossfadeEdgeDrag::motion (GdkEvent*, bool)
6215 {
6216         double distance;
6217         double new_length;
6218         framecnt_t len;
6219
6220         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6221
6222         if (start) {
6223                 distance = _drags->current_pointer_x() - grab_x();
6224                 len = ar->fade_in()->back()->when;
6225         } else {
6226                 distance = grab_x() - _drags->current_pointer_x();
6227                 len = ar->fade_out()->back()->when;
6228         }
6229
6230         /* how long should it be ? */
6231
6232         new_length = len + _editor->pixel_to_sample (distance);
6233
6234         /* now check with the region that this is legal */
6235
6236         new_length = ar->verify_xfade_bounds (new_length, start);
6237
6238         if (start) {
6239                 arv->reset_fade_in_shape_width (ar, new_length);
6240         } else {
6241                 arv->reset_fade_out_shape_width (ar, new_length);
6242         }
6243 }
6244
6245 void
6246 CrossfadeEdgeDrag::finished (GdkEvent*, bool)
6247 {
6248         double distance;
6249         double new_length;
6250         framecnt_t len;
6251
6252         boost::shared_ptr<AudioRegion> ar (arv->audio_region());
6253
6254         if (start) {
6255                 distance = _drags->current_pointer_x() - grab_x();
6256                 len = ar->fade_in()->back()->when;
6257         } else {
6258                 distance = grab_x() - _drags->current_pointer_x();
6259                 len = ar->fade_out()->back()->when;
6260         }
6261
6262         new_length = ar->verify_xfade_bounds (len + _editor->pixel_to_sample (distance), start);
6263
6264         _editor->begin_reversible_command ("xfade trim");
6265         ar->playlist()->clear_owned_changes ();
6266
6267         if (start) {
6268                 ar->set_fade_in_length (new_length);
6269         } else {
6270                 ar->set_fade_out_length (new_length);
6271         }
6272
6273         /* Adjusting the xfade may affect other regions in the playlist, so we need
6274            to get undo Commands from the whole playlist rather than just the
6275            region.
6276         */
6277
6278         vector<Command*> cmds;
6279         ar->playlist()->rdiff (cmds);
6280         _editor->session()->add_commands (cmds);
6281         _editor->commit_reversible_command ();
6282
6283 }
6284
6285 void
6286 CrossfadeEdgeDrag::aborted (bool)
6287 {
6288         if (start) {
6289                 // arv->redraw_start_xfade ();
6290         } else {
6291                 // arv->redraw_end_xfade ();
6292         }
6293 }
6294
6295 RegionCutDrag::RegionCutDrag (Editor* e, ArdourCanvas::Item* item, framepos_t pos)
6296         : Drag (e, item, true)
6297         , line (new EditorCursor (*e))
6298 {
6299         line->set_position (pos);
6300         line->show ();
6301 }
6302
6303 RegionCutDrag::~RegionCutDrag ()
6304 {
6305         delete line;
6306 }
6307
6308 void
6309 RegionCutDrag::motion (GdkEvent*, bool)
6310 {
6311         framepos_t where = _drags->current_pointer_frame();
6312         _editor->snap_to (where);
6313
6314         line->set_position (where);
6315 }
6316
6317 void
6318 RegionCutDrag::finished (GdkEvent*, bool)
6319 {
6320         _editor->get_track_canvas()->canvas()->re_enter();
6321
6322         framepos_t pos = _drags->current_pointer_frame();
6323
6324         line->hide ();
6325
6326         RegionSelection rs = _editor->get_regions_from_selection_and_mouse (pos);
6327
6328         if (rs.empty()) {
6329                 return;
6330         }
6331
6332         _editor->split_regions_at (pos, rs);
6333 }
6334
6335 void
6336 RegionCutDrag::aborted (bool)
6337 {
6338 }