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 #define __STDC_LIMIT_MACROS 1
  21 #include <stdint.h>
  22 #include "pbd/memento_command.h"
  23 #include "pbd/basename.h"
  24 #include "pbd/stateful_diff_command.h"
  25 #include "ardour/diskstream.h"
  26 #include "ardour/session.h"
  27 #include "ardour/dB.h"
  28 #include "ardour/region_factory.h"
  29 #include "ardour/midi_diskstream.h"
  30 #include "editor.h"
  31 #include "i18n.h"
  32 #include "keyboard.h"
  33 #include "audio_region_view.h"
  34 #include "midi_region_view.h"
  35 #include "ardour_ui.h"
  36 #include "gui_thread.h"
  37 #include "control_point.h"
  38 #include "utils.h"
  39 #include "region_gain_line.h"
  40 #include "editor_drag.h"
  41 #include "audio_time_axis.h"
  42 #include "midi_time_axis.h"
  43 #include "canvas-note.h"
  44 #include "selection.h"
  45 #include "midi_selection.h"
  46 #include "automation_time_axis.h"
  47
  48 using namespace std;
  49 using namespace ARDOUR;
  50 using namespace PBD;
  51 using namespace Gtk;
  52 using namespace Editing;
  53 using namespace ArdourCanvas;
  54
  55 using Gtkmm2ext::Keyboard;
  56
  57 double const ControlPointDrag::_zero_gain_fraction = gain_to_slider_position (dB_to_coefficient (0.0));
  58
  59 DragManager::DragManager (Editor* e)
  60         : _editor (e)
  61         , _ending (false)
  62         , _current_pointer_frame (0)
  63 {
  64
  65 }
  66
  67 DragManager::~DragManager ()
  68 {
  69         abort ();
  70 }
  71
  72 void
  73 DragManager::abort ()
  74 {
  75         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
  76                 (*i)->end_grab (0);
  77                 delete *i;
  78         }
  79
  80         _drags.clear ();
  81 }
  82
  83 void
  84 DragManager::break_drag ()
  85 {
  86         _ending = true;
  87
  88         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
  89                 (*i)->break_drag ();
  90                 delete *i;
  91         }
  92
  93         _drags.clear ();
  94
  95         _ending = false;
  96 }
  97
  98 void
  99 DragManager::add (Drag* d)
 100 {
 101         d->set_manager (this);
 102         _drags.push_back (d);
 103 }
 104
 105 void
 106 DragManager::set (Drag* d, GdkEvent* e, Gdk::Cursor* c)
 107 {
 108         assert (_drags.empty ());
 109         d->set_manager (this);
 110         _drags.push_back (d);
 111         start_grab (e);
 112 }
 113
 114 void
 115 DragManager::start_grab (GdkEvent* e)
 116 {
 117         _current_pointer_frame = _editor->event_frame (e, &_current_pointer_x, &_current_pointer_y);
 118
 119         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 120                 (*i)->start_grab (e);
 121         }
 122 }
 123
 124 bool
 125 DragManager::end_grab (GdkEvent* e)
 126 {
 127         _ending = true;
 128
 129         bool r = false;
 130         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 131                 bool const t = (*i)->end_grab (e);
 132                 if (t) {
 133                         r = true;
 134                 }
 135                 delete *i;
 136         }
 137
 138         _drags.clear ();
 139
 140         _ending = false;
 141
 142         return r;
 143 }
 144
 145 bool
 146 DragManager::motion_handler (GdkEvent* e, bool from_autoscroll)
 147 {
 148         bool r = false;
 149
 150         _current_pointer_frame = _editor->event_frame (e, &_current_pointer_x, &_current_pointer_y);
 151
 152         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 153                 bool const t = (*i)->motion_handler (e, from_autoscroll);
 154                 if (t) {
 155                         r = true;
 156                 }
 157
 158         }
 159
 160         return r;
 161 }
 162
 163 bool
 164 DragManager::have_item (ArdourCanvas::Item* i) const
 165 {
 166         list<Drag*>::const_iterator j = _drags.begin ();
 167         while (j != _drags.end() && (*j)->item () != i) {
 168                 ++j;
 169         }
 170
 171         return j != _drags.end ();
 172 }
 173
 174 Drag::Drag (Editor* e, ArdourCanvas::Item* i)
 175         : _editor (e)
 176         , _item (i)
 177         , _pointer_frame_offset (0)
 178         , _move_threshold_passed (false)
 179         , _grab_frame (0)
 180         , _last_pointer_frame (0)
 181 {
 182
 183 }
 184
 185 void
 186 Drag::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t time)
 187 {
 188         _item->ungrab (0);
 189         _item = new_item;
 190
 191         if (cursor == 0) {
 192                 cursor = _editor->which_grabber_cursor ();
 193         }
 194
 195         _item->grab (Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK, *cursor, time);
 196 }
 197
 198 void
 199 Drag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 200 {
 201         if (cursor == 0) {
 202                 cursor = _editor->which_grabber_cursor ();
 203         }
 204
 205         // if dragging with button2, the motion is x constrained, with Alt-button2 it is y constrained
 206
 207         if (Keyboard::is_button2_event (&event->button)) {
 208                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::SecondaryModifier)) {
 209                         _y_constrained = true;
 210                         _x_constrained = false;
 211                 } else {
 212                         _y_constrained = false;
 213                         _x_constrained = true;
 214                 }
 215         } else {
 216                 _x_constrained = false;
 217                 _y_constrained = false;
 218         }
 219
 220         _grab_frame = _editor->event_frame (event, &_grab_x, &_grab_y);
 221         _grab_frame = adjusted_frame (_grab_frame, event);
 222         _last_pointer_frame = _grab_frame;
 223         _last_pointer_x = _grab_x;
 224         _last_pointer_y = _grab_y;
 225
 226         _item->grab (Gdk::POINTER_MOTION_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK,
 227                               *cursor,
 228                               event->button.time);
 229
 230         if (_editor->session() && _editor->session()->transport_rolling()) {
 231                 _was_rolling = true;
 232         } else {
 233                 _was_rolling = false;
 234         }
 235
 236         switch (_editor->snap_type()) {
 237         case SnapToRegionStart:
 238         case SnapToRegionEnd:
 239         case SnapToRegionSync:
 240         case SnapToRegionBoundary:
 241                 _editor->build_region_boundary_cache ();
 242                 break;
 243         default:
 244                 break;
 245         }
 246 }
 247
 248 /** @param event GDK event, or 0.
 249  *  @return true if some movement occurred, otherwise false.
 250  */
 251 bool
 252 Drag::end_grab (GdkEvent* event)
 253 {
 254         _editor->stop_canvas_autoscroll ();
 255
 256         _item->ungrab (event ? event->button.time : 0);
 257
 258         finished (event, _move_threshold_passed);
 259
 260         _editor->hide_verbose_canvas_cursor();
 261
 262         return _move_threshold_passed;
 263 }
 264
 265 nframes64_t
 266 Drag::adjusted_frame (nframes64_t f, GdkEvent const * event, bool snap) const
 267 {
 268         nframes64_t pos = 0;
 269
 270         if (f > _pointer_frame_offset) {
 271                 pos = f - _pointer_frame_offset;
 272         }
 273
 274         if (snap) {
 275                 _editor->snap_to_with_modifier (pos, event);
 276         }
 277
 278         return pos;
 279 }
 280
 281 nframes64_t
 282 Drag::adjusted_current_frame (GdkEvent const * event, bool snap) const
 283 {
 284         return adjusted_frame (_drags->current_pointer_frame (), event, snap);
 285 }
 286
 287 bool
 288 Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 289 {
 290         /* check to see if we have moved in any way that matters since the last motion event */
 291         if ( (!x_movement_matters() || _last_pointer_frame == adjusted_current_frame (event)) &&
 292              (!y_movement_matters() || _last_pointer_y == _drags->current_pointer_y ()) ) {
 293                 return false;
 294         }
 295
 296         pair<nframes64_t, int> const threshold = move_threshold ();
 297
 298         bool const old_move_threshold_passed = _move_threshold_passed;
 299
 300         if (!from_autoscroll && !_move_threshold_passed) {
 301
 302                 bool const xp = (::llabs (adjusted_current_frame (event) - _grab_frame) >= threshold.first);
 303                 bool const yp = (::fabs ((_drags->current_pointer_y () - _grab_y)) >= threshold.second);
 304
 305                 _move_threshold_passed = ((xp && x_movement_matters()) || (yp && y_movement_matters()));
 306         }
 307
 308         if (active (_editor->mouse_mode) && _move_threshold_passed) {
 309
 310                 if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
 311                         if (!from_autoscroll) {
 312                                 _editor->maybe_autoscroll (&event->motion, allow_vertical_autoscroll ());
 313                         }
 314
 315                         motion (event, _move_threshold_passed != old_move_threshold_passed);
 316
 317                         _last_pointer_x = _drags->current_pointer_x ();
 318                         _last_pointer_y = _drags->current_pointer_y ();
 319                         _last_pointer_frame = adjusted_current_frame (event);
 320
 321                         return true;
 322                 }
 323         }
 324
 325         return false;
 326 }
 327
 328 void
 329 Drag::break_drag ()
 330 {
 331         if (_item) {
 332                 _item->ungrab (0);
 333         }
 334
 335         aborted ();
 336
 337         _editor->stop_canvas_autoscroll ();
 338         _editor->hide_verbose_canvas_cursor ();
 339 }
 340
 341 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 342         : Drag (e, i),
 343           _primary (p),
 344           _views (v)
 345 {
 346         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), ui_bind (&RegionDrag::region_going_away, this, _1), gui_context());
 347 }
 348
 349 void
 350 RegionDrag::region_going_away (RegionView* v)
 351 {
 352         _views.remove (v);
 353 }
 354
 355 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 356         : RegionDrag (e, i, p, v),
 357           _dest_trackview (0),
 358           _dest_layer (0),
 359           _brushing (b),
 360           _total_x_delta (0)
 361 {
 362
 363 }
 364
 365
 366 void
 367 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
 368 {
 369         Drag::start_grab (event);
 370
 371         _editor->show_verbose_time_cursor (_last_frame_position, 10);
 372 }
 373
 374 RegionMotionDrag::TimeAxisViewSummary
 375 RegionMotionDrag::get_time_axis_view_summary ()
 376 {
 377         int32_t children = 0;
 378         TimeAxisViewSummary sum;
 379
 380         _editor->visible_order_range (&sum.visible_y_low, &sum.visible_y_high);
 381
 382         /* get a bitmask representing the visible tracks */
 383
 384         for (TrackViewList::iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
 385                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 386                 TimeAxisView::Children children_list;
 387
 388                 /* zeroes are audio/MIDI tracks. ones are other types. */
 389
 390                 if (!rtv->hidden()) {
 391
 392                         if (!rtv->is_track()) {
 393                                 /* not an audio nor MIDI track */
 394                                 sum.tracks = sum.tracks |= (0x01 << rtv->order());
 395                         }
 396
 397                         sum.height_list[rtv->order()] = (*i)->current_height();
 398                         children = 1;
 399
 400                         if ((children_list = rtv->get_child_list()).size() > 0) {
 401                                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 402                                         sum.tracks = sum.tracks |= (0x01 << (rtv->order() + children));
 403                                         sum.height_list[rtv->order() + children] = (*j)->current_height();
 404                                         children++;
 405                                 }
 406                         }
 407                 }
 408         }
 409
 410         return sum;
 411 }
 412
 413 bool
 414 RegionMotionDrag::compute_y_delta (
 415         TimeAxisView const * last_pointer_view, TimeAxisView* current_pointer_view,
 416         int32_t last_pointer_layer, int32_t current_pointer_layer,
 417         TimeAxisViewSummary const & tavs,
 418         int32_t* pointer_order_span, int32_t* pointer_layer_span,
 419         int32_t* canvas_pointer_order_span
 420         )
 421 {
 422         if (_brushing) {
 423                 *pointer_order_span = 0;
 424                 *pointer_layer_span = 0;
 425                 return true;
 426         }
 427
 428         bool clamp_y_axis = false;
 429
 430         /* the change in track order between this callback and the last */
 431         *pointer_order_span = last_pointer_view->order() - current_pointer_view->order();
 432         /* the change in layer between this callback and the last;
 433            only meaningful if pointer_order_span == 0 (ie we've not moved tracks) */
 434         *pointer_layer_span = last_pointer_layer - current_pointer_layer;
 435
 436         if (*pointer_order_span != 0) {
 437
 438                 /* find the actual pointer span, in terms of the number of visible tracks;
 439                    to do this, we reduce |pointer_order_span| by the number of hidden tracks
 440                    over the span */
 441
 442                 *canvas_pointer_order_span = *pointer_order_span;
 443                 if (last_pointer_view->order() >= current_pointer_view->order()) {
 444                         for (int32_t y = current_pointer_view->order(); y < last_pointer_view->order(); y++) {
 445                                 if (tavs.height_list[y] == 0) {
 446                                         *canvas_pointer_order_span--;
 447                                 }
 448                         }
 449                 } else {
 450                         for (int32_t y = last_pointer_view->order(); y <= current_pointer_view->order(); y++) {
 451                                 if (tavs.height_list[y] == 0) {
 452                                         *canvas_pointer_order_span++;
 453                                 }
 454                         }
 455                 }
 456
 457                 for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 458
 459                         RegionView* rv = (*i);
 460
 461                         if (rv->region()->locked()) {
 462                                 continue;
 463                         }
 464
 465                         double ix1, ix2, iy1, iy2;
 466                         rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
 467                         rv->get_canvas_frame()->i2w (ix1, iy1);
 468                         iy1 += _editor->vertical_adjustment.get_value() - _editor->canvas_timebars_vsize;
 469
 470                         /* get the new trackview for this particular region */
 471                         pair<TimeAxisView*, int> const tvp = _editor->trackview_by_y_position (iy1);
 472                         assert (tvp.first);
 473                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
 474
 475                         /* XXX: not sure that we should be passing canvas_pointer_order_span in here,
 476                            as surely this is a per-region thing... */
 477
 478                         clamp_y_axis = y_movement_disallowed (
 479                                 rtv->order(), last_pointer_view->order(), *canvas_pointer_order_span, tavs
 480                                 );
 481
 482                         if (clamp_y_axis) {
 483                                 break;
 484                         }
 485                 }
 486
 487         } else if (_dest_trackview == current_pointer_view) {
 488
 489                 if (current_pointer_layer == last_pointer_layer) {
 490                         /* No movement; clamp */
 491                         clamp_y_axis = true;
 492                 }
 493         }
 494
 495         if (!clamp_y_axis) {
 496                 _dest_trackview = current_pointer_view;
 497                 _dest_layer = current_pointer_layer;
 498         }
 499
 500         return clamp_y_axis;
 501 }
 502
 503
 504 double
 505 RegionMotionDrag::compute_x_delta (GdkEvent const * event, nframes64_t* pending_region_position)
 506 {
 507         /* compute the amount of pointer motion in frames, and where
 508            the region would be if we moved it by that much.
 509         */
 510         *pending_region_position = adjusted_current_frame (event);
 511
 512         nframes64_t sync_frame;
 513         nframes64_t sync_offset;
 514         int32_t sync_dir;
 515
 516         sync_offset = _primary->region()->sync_offset (sync_dir);
 517
 518         /* we don't handle a sync point that lies before zero.
 519          */
 520         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 521
 522                 sync_frame = *pending_region_position + (sync_dir*sync_offset);
 523
 524                 _editor->snap_to_with_modifier (sync_frame, event);
 525
 526                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame);
 527
 528         } else {
 529                 *pending_region_position = _last_frame_position;
 530         }
 531
 532         if (*pending_region_position > max_frames - _primary->region()->length()) {
 533                 *pending_region_position = _last_frame_position;
 534         }
 535
 536         double x_delta = 0;
 537
 538         if ((*pending_region_position != _last_frame_position) && x_move_allowed ()) {
 539
 540                 /* now compute the canvas unit distance we need to move the regionview
 541                    to make it appear at the new location.
 542                 */
 543
 544                 x_delta = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->frames_per_unit;
 545
 546                 if (*pending_region_position <= _last_frame_position) {
 547
 548                         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 549
 550                                 RegionView* rv = (*i);
 551
 552                                 // If any regionview is at zero, we need to know so we can stop further leftward motion.
 553
 554                                 double ix1, ix2, iy1, iy2;
 555                                 rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
 556                                 rv->get_canvas_frame()->i2w (ix1, iy1);
 557
 558                                 if (-x_delta > ix1 + _editor->horizontal_adjustment.get_value()) {
 559                                         x_delta = 0;
 560                                         *pending_region_position = _last_frame_position;
 561                                         break;
 562                                 }
 563                         }
 564
 565                 }
 566
 567                 _last_frame_position = *pending_region_position;
 568         }
 569
 570         return x_delta;
 571 }
 572
 573 void
 574 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 575 {
 576         double y_delta = 0;
 577
 578         TimeAxisViewSummary tavs = get_time_axis_view_summary ();
 579
 580         vector<int32_t>::iterator j;
 581
 582         /* *pointer* variables reflect things about the pointer; as we may be moving
 583            multiple regions, much detail must be computed per-region */
 584
 585         /* current_pointer_view will become the TimeAxisView that we're currently pointing at, and
 586            current_pointer_layer the current layer on that TimeAxisView; in this code layer numbers
 587            are with respect to how the view's layers are displayed; if we are in Overlaid mode, layer
 588            is always 0 regardless of what the region's "real" layer is */
 589         RouteTimeAxisView* current_pointer_view;
 590         layer_t current_pointer_layer;
 591         if (!check_possible (&current_pointer_view, &current_pointer_layer)) {
 592                 return;
 593         }
 594
 595         /* TimeAxisView that we were pointing at last time we entered this method */
 596         TimeAxisView const * const last_pointer_view = _dest_trackview;
 597         /* the order of the track that we were pointing at last time we entered this method */
 598         int32_t const last_pointer_order = last_pointer_view->order ();
 599         /* the layer that we were pointing at last time we entered this method */
 600         layer_t const last_pointer_layer = _dest_layer;
 601
 602         int32_t pointer_order_span;
 603         int32_t pointer_layer_span;
 604         int32_t canvas_pointer_order_span;
 605
 606         bool const clamp_y_axis = compute_y_delta (
 607                 last_pointer_view, current_pointer_view,
 608                 last_pointer_layer, current_pointer_layer, tavs,
 609                 &pointer_order_span, &pointer_layer_span,
 610                 &canvas_pointer_order_span
 611                 );
 612
 613         nframes64_t pending_region_position;
 614         double const x_delta = compute_x_delta (event, &pending_region_position);
 615
 616         /*************************************************************
 617             PREPARE TO MOVE
 618         ************************************************************/
 619
 620         if (x_delta == 0 && pointer_order_span == 0 && pointer_layer_span == 0 && !first_move) {
 621                 /* haven't reached next snap point, and we're not switching
 622                    trackviews nor layers. nothing to do.
 623                 */
 624                 return;
 625         }
 626
 627         /*************************************************************
 628             MOTION
 629         ************************************************************/
 630
 631         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
 632
 633         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 634
 635                 RegionView* rv = (*i);
 636
 637                 if (rv->region()->locked()) {
 638                         continue;
 639                 }
 640
 641                 /* here we are calculating the y distance from the
 642                    top of the first track view to the top of the region
 643                    area of the track view that we're working on */
 644
 645                 /* this x value is just a dummy value so that we have something
 646                    to pass to i2w () */
 647
 648                 double ix1 = 0;
 649
 650                 /* distance from the top of this track view to the region area
 651                    of our track view is always 1 */
 652
 653                 double iy1 = 1;
 654
 655                 /* convert to world coordinates, ie distance from the top of
 656                    the ruler section */
 657
 658                 rv->get_canvas_frame()->i2w (ix1, iy1);
 659
 660                 /* compensate for the ruler section and the vertical scrollbar position */
 661                 iy1 += _editor->get_trackview_group_vertical_offset ();
 662
 663                 if (first_move) {
 664
 665                         // hide any dependent views
 666
 667                         rv->get_time_axis_view().hide_dependent_views (*rv);
 668
 669                         /*
 670                            reparent to a non scrolling group so that we can keep the
 671                            region selection above all time axis views.
 672                            reparenting means we have to move the rv as the two
 673                            parent groups have different coordinates.
 674                         */
 675
 676                         rv->get_canvas_group()->property_y() = iy1 - 1;
 677                         rv->get_canvas_group()->reparent(*(_editor->_region_motion_group));
 678
 679                         rv->fake_set_opaque (true);
 680                 }
 681
 682                 /* current view for this particular region */
 683                 pair<TimeAxisView*, int> pos = _editor->trackview_by_y_position (iy1);
 684                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (pos.first);
 685
 686                 if (pointer_order_span != 0 && !clamp_y_axis) {
 687
 688                         /* INTER-TRACK MOVEMENT */
 689
 690                         /* move through the height list to the track that the region is currently on */
 691                         vector<int32_t>::iterator j = tavs.height_list.begin ();
 692                         int32_t x = 0;
 693                         while (j != tavs.height_list.end () && x != rtv->order ()) {
 694                                 ++x;
 695                                 ++j;
 696                         }
 697
 698                         y_delta = 0;
 699                         int32_t temp_pointer_order_span = canvas_pointer_order_span;
 700
 701                         if (j != tavs.height_list.end ()) {
 702
 703                                 /* Account for layers in the original and
 704                                    destination tracks.  If we're moving around in layers we assume
 705                                    that only one track is involved, so it's ok to use *pointer*
 706                                    variables here. */
 707
 708                                 StreamView* lv = last_pointer_view->view ();
 709                                 assert (lv);
 710
 711                                 /* move to the top of the last trackview */
 712                                 if (lv->layer_display () == Stacked) {
 713                                         y_delta -= (lv->layers() - last_pointer_layer - 1) * lv->child_height ();
 714                                 }
 715
 716                                 StreamView* cv = current_pointer_view->view ();
 717                                 assert (cv);
 718
 719                                 /* move to the right layer on the current trackview */
 720                                 if (cv->layer_display () == Stacked) {
 721                                         y_delta += (cv->layers() - current_pointer_layer - 1) * cv->child_height ();
 722                                 }
 723
 724                                 /* And for being on a non-topmost layer on the new
 725                                    track */
 726
 727                                 while (temp_pointer_order_span > 0) {
 728                                         /* we're moving up canvas-wise,
 729                                            so we need to find the next track height
 730                                         */
 731                                         if (j != tavs.height_list.begin()) {
 732                                                 j--;
 733                                         }
 734
 735                                         if (x != last_pointer_order) {
 736                                                 if ((*j) == 0) {
 737                                                         ++temp_pointer_order_span;
 738                                                 }
 739                                         }
 740
 741                                         y_delta -= (*j);
 742                                         temp_pointer_order_span--;
 743                                 }
 744
 745                                 while (temp_pointer_order_span < 0) {
 746
 747                                         y_delta += (*j);
 748
 749                                         if (x != last_pointer_order) {
 750                                                 if ((*j) == 0) {
 751                                                         --temp_pointer_order_span;
 752                                                 }
 753                                         }
 754
 755                                         if (j != tavs.height_list.end()) {
 756                                                 j++;
 757                                         }
 758
 759                                         temp_pointer_order_span++;
 760                                 }
 761
 762
 763                                 /* find out where we'll be when we move and set height accordingly */
 764
 765                                 pair<TimeAxisView*, int> const pos = _editor->trackview_by_y_position (iy1 + y_delta);
 766                                 RouteTimeAxisView const * temp_rtv = dynamic_cast<RouteTimeAxisView*> (pos.first);
 767                                 rv->set_height (temp_rtv->view()->child_height());
 768
 769                                 /* if you un-comment the following, the region colours will follow
 770                                    the track colours whilst dragging; personally
 771                                    i think this can confuse things, but never mind.
 772                                 */
 773
 774                                 //const GdkColor& col (temp_rtv->view->get_region_color());
 775                                 //rv->set_color (const_cast<GdkColor&>(col));
 776                         }
 777                 }
 778
 779                 if (pointer_order_span == 0 && pointer_layer_span != 0 && !clamp_y_axis) {
 780
 781                         /* INTER-LAYER MOVEMENT in the same track */
 782                         y_delta = rtv->view()->child_height () * pointer_layer_span;
 783                 }
 784
 785
 786                 if (_brushing) {
 787                         _editor->mouse_brush_insert_region (rv, pending_region_position);
 788                 } else {
 789                         rv->move (x_delta, y_delta);
 790                 }
 791
 792         } /* foreach region */
 793
 794         _total_x_delta += x_delta;
 795
 796         if (first_move) {
 797                 _editor->cursor_group->raise_to_top();
 798         }
 799
 800         if (x_delta != 0 && !_brushing) {
 801                 _editor->show_verbose_time_cursor (_last_frame_position, 10);
 802         }
 803 }
 804
 805 void
 806 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
 807 {
 808         if (_copy && first_move) {
 809                 copy_regions (event);
 810         }
 811
 812         RegionMotionDrag::motion (event, first_move);
 813 }
 814
 815 void
 816 RegionMoveDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
 817 {
 818         vector<RegionView*> copies;
 819         boost::shared_ptr<Diskstream> ds;
 820         boost::shared_ptr<Playlist> from_playlist;
 821         boost::shared_ptr<Playlist> to_playlist;
 822         RegionSelection new_views;
 823         typedef set<boost::shared_ptr<Playlist> > PlaylistSet;
 824         PlaylistSet modified_playlists;
 825         PlaylistSet frozen_playlists;
 826         list <sigc::connection> modified_playlist_connections;
 827         pair<PlaylistSet::iterator,bool> insert_result, frozen_insert_result;
 828         nframes64_t drag_delta;
 829         bool changed_tracks, changed_position;
 830         map<RegionView*, pair<RouteTimeAxisView*, int> > final;
 831         RouteTimeAxisView* source_tv;
 832         vector<StatefulDiffCommand*> sdc;
 833
 834         if (!movement_occurred) {
 835                 /* just a click */
 836                 return;
 837         }
 838
 839         if (_brushing) {
 840                 /* all changes were made during motion event handlers */
 841
 842                 if (_copy) {
 843                         for (list<RegionView*>::iterator i = _views.begin(); i != _views.end(); ++i) {
 844                                 copies.push_back (*i);
 845                         }
 846                 }
 847
 848                 goto out;
 849         }
 850
 851         /* reverse this here so that we have the correct logic to finalize
 852            the drag.
 853         */
 854
 855         if (Config->get_edit_mode() == Lock) {
 856                 _x_constrained = !_x_constrained;
 857         }
 858
 859         if (_copy) {
 860                 if (_x_constrained) {
 861                         _editor->begin_reversible_command (_("fixed time region copy"));
 862                 } else {
 863                         _editor->begin_reversible_command (_("region copy"));
 864                 }
 865         } else {
 866                 if (_x_constrained) {
 867                         _editor->begin_reversible_command (_("fixed time region drag"));
 868                 } else {
 869                         _editor->begin_reversible_command (_("region drag"));
 870                 }
 871         }
 872
 873         changed_position = (_last_frame_position != (nframes64_t) (_primary->region()->position()));
 874         changed_tracks = (_dest_trackview != &_primary->get_time_axis_view());
 875
 876         drag_delta = _primary->region()->position() - _last_frame_position;
 877
 878         _editor->update_canvas_now ();
 879
 880         /* make a list of where each region ended up */
 881         final = find_time_axis_views_and_layers ();
 882
 883         cerr << "Iterate over " << _views.size() << " views\n";
 884
 885         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ) {
 886
 887                 RegionView* rv = (*i);
 888                 RouteTimeAxisView* dest_rtv = final[*i].first;
 889                 layer_t dest_layer = final[*i].second;
 890
 891                 nframes64_t where;
 892
 893                 from_playlist.reset ();
 894                 to_playlist.reset ();
 895
 896                 if (rv->region()->locked()) {
 897                         ++i;
 898                         continue;
 899                 }
 900
 901                 if (changed_position && !_x_constrained) {
 902                         where = rv->region()->position() - drag_delta;
 903                 } else {
 904                         where = rv->region()->position();
 905                 }
 906
 907                 boost::shared_ptr<Region> new_region;
 908
 909                 if (_copy) {
 910                         /* we already made a copy */
 911                         new_region = rv->region();
 912
 913                         /* undo the previous hide_dependent_views so that xfades don't
 914                            disappear on copying regions
 915                         */
 916
 917                         //rv->get_time_axis_view().reveal_dependent_views (*rv);
 918
 919                 } else if (changed_tracks && dest_rtv->playlist()) {
 920                         new_region = RegionFactory::create (rv->region());
 921                 }
 922
 923                 if (changed_tracks || _copy) {
 924
 925                         to_playlist = dest_rtv->playlist();
 926
 927                         if (!to_playlist) {
 928                                 ++i;
 929                                 continue;
 930                         }
 931
 932                         _editor->latest_regionviews.clear ();
 933
 934                         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*_editor, &Editor::collect_new_region_view));
 935
 936                         insert_result = modified_playlists.insert (to_playlist);
 937
 938                         if (insert_result.second) {
 939                                 to_playlist->clear_history ();
 940                         }
 941
 942                         cerr << "To playlist " << to_playlist->name() << " region history contains "
 943                              << to_playlist->region_list().change().added.size() << " adds and "
 944                              << to_playlist->region_list().change().removed.size() << " removes\n";
 945
 946                         cerr << "Adding new region " << new_region->id() << " based on "
 947                              << rv->region()->id() << endl;
 948
 949                         to_playlist->add_region (new_region, where);
 950
 951                         if (dest_rtv->view()->layer_display() == Stacked) {
 952                                 new_region->set_layer (dest_layer);
 953                                 new_region->set_pending_explicit_relayer (true);
 954                         }
 955
 956                         c.disconnect ();
 957
 958                         if (!_editor->latest_regionviews.empty()) {
 959                                 // XXX why just the first one ? we only expect one
 960                                 // commented out in nick_m's canvas reworking. is that intended?
 961                                 //dest_atv->reveal_dependent_views (*latest_regionviews.front());
 962                                 new_views.push_back (_editor->latest_regionviews.front());
 963                         }
 964
 965                 } else {
 966                         rv->region()->clear_history ();
 967
 968                         /*
 969                            motion on the same track. plonk the previously reparented region
 970                            back to its original canvas group (its streamview).
 971                            No need to do anything for copies as they are fake regions which will be deleted.
 972                         */
 973
 974                         rv->get_canvas_group()->reparent (*dest_rtv->view()->canvas_item());
 975                         rv->get_canvas_group()->property_y() = 0;
 976                         rv->get_time_axis_view().reveal_dependent_views (*rv);
 977
 978                         /* just change the model */
 979
 980                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
 981
 982                         if (dest_rtv->view()->layer_display() == Stacked) {
 983                                 rv->region()->set_layer (dest_layer);
 984                                 rv->region()->set_pending_explicit_relayer (true);
 985                         }
 986
 987                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
 988
 989                         frozen_insert_result = frozen_playlists.insert(playlist);
 990
 991                         if (frozen_insert_result.second) {
 992                                 playlist->freeze();
 993                         }
 994
 995                         cerr << "Moving region " << rv->region()->id() << endl;
 996
 997                         rv->region()->set_position (where, (void*) this);
 998
 999                         sdc.push_back (new StatefulDiffCommand (rv->region()));
1000                 }
1001
1002                 if (changed_tracks && !_copy) {
1003
1004                         /* get the playlist where this drag started. we can't use rv->region()->playlist()
1005                            because we may have copied the region and it has not been attached to a playlist.
1006                         */
1007
1008                         source_tv = dynamic_cast<RouteTimeAxisView*> (&rv->get_time_axis_view());
1009                         ds = source_tv->get_diskstream();
1010                         from_playlist = ds->playlist();
1011
1012                         assert (source_tv);
1013                         assert (ds);
1014                         assert (from_playlist);
1015
1016                         /* moved to a different audio track, without copying */
1017
1018                         /* the region that used to be in the old playlist is not
1019                            moved to the new one - we use a copy of it. as a result,
1020                            any existing editor for the region should no longer be
1021                            visible.
1022                         */
1023
1024                         rv->hide_region_editor();
1025                         rv->fake_set_opaque (false);
1026
1027                         /* remove the region from the old playlist */
1028
1029                         insert_result = modified_playlists.insert (from_playlist);
1030
1031                         if (insert_result.second) {
1032                                 from_playlist->clear_history ();
1033                         }
1034
1035                         cerr << "From playlist " << from_playlist->name() << " region history contains "
1036                              << from_playlist->region_list().change().added.size() << " adds and "
1037                              << from_playlist->region_list().change().removed.size() << " removes\n";
1038
1039                         cerr << "removing region " << rv->region() << endl;
1040
1041                         from_playlist->remove_region (rv->region());
1042
1043                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1044                            was selected in all of them, then removing it from a playlist will have removed all
1045                            trace of it from the selection (i.e. there were N regions selected, we removed 1,
1046                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1047                            corresponding regionview, and the selection is now empty).
1048
1049                            this could have invalidated any and all iterators into the region selection.
1050
1051                            the heuristic we use here is: if the region selection is empty, break out of the loop
1052                            here. if the region selection is not empty, then restart the loop because we know that
1053                            we must have removed at least the region(view) we've just been working on as well as any
1054                            that we processed on previous iterations.
1055
1056                            EXCEPT .... if we are doing a copy drag, then the selection hasn't been modified and
1057                            we can just iterate.
1058                         */
1059
1060                         if (_views.empty()) {
1061                                 if (to_playlist) {
1062                                         sdc.push_back (new StatefulDiffCommand (to_playlist));
1063                                         cerr << "Saved diff for to:" << to_playlist->name() << endl;
1064                                 }
1065
1066                                 if (from_playlist && (from_playlist != to_playlist)) {
1067                                         sdc.push_back (new StatefulDiffCommand (from_playlist));
1068                                         cerr << "Saved diff for from:" << from_playlist->name() << endl;
1069                                 }
1070                                 break;
1071                         } else {
1072                                 i = _views.begin();
1073                         }
1074
1075                 } else {
1076                         ++i;
1077                 }
1078
1079                 if (_copy) {
1080                         copies.push_back (rv);
1081                 }
1082
1083                 cerr << "Done with TV, top = " << to_playlist << " from = " << from_playlist << endl;
1084
1085                 if (to_playlist) {
1086                         sdc.push_back (new StatefulDiffCommand (to_playlist));
1087                         cerr << "Saved diff for to:" << to_playlist->name() << endl;
1088                 }
1089
1090                 if (from_playlist && (from_playlist != to_playlist)) {
1091                         sdc.push_back (new StatefulDiffCommand (from_playlist));
1092                         cerr << "Saved diff for from:" << from_playlist->name() << endl;
1093                 }
1094         }
1095
1096         /*
1097            if we've created new regions either by copying or moving
1098            to a new track, we want to replace the old selection with the new ones
1099         */
1100
1101         if (new_views.size() > 0) {
1102                 _editor->selection->set (new_views);
1103         }
1104
1105         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1106                 (*p)->thaw();
1107         }
1108
1109   out:
1110         for (vector<StatefulDiffCommand*>::iterator i = sdc.begin(); i != sdc.end(); ++i) {
1111                 _editor->session()->add_command (*i);
1112         }
1113
1114         _editor->commit_reversible_command ();
1115
1116         for (vector<RegionView*>::iterator x = copies.begin(); x != copies.end(); ++x) {
1117                 delete *x;
1118         }
1119 }
1120
1121 void
1122 RegionMoveDrag::aborted ()
1123 {
1124         if (_copy) {
1125
1126                 for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1127                         delete *i;
1128                 }
1129
1130                 _views.clear ();
1131
1132         } else {
1133                 RegionMotionDrag::aborted ();
1134         }
1135 }
1136
1137 void
1138 RegionMotionDrag::aborted ()
1139 {
1140         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1141                 TimeAxisView* tv = &(*i)->get_time_axis_view ();
1142                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1143                 assert (rtv);
1144                 (*i)->get_canvas_group()->reparent (*rtv->view()->canvas_item());
1145                 (*i)->get_canvas_group()->property_y() = 0;
1146                 (*i)->get_time_axis_view().reveal_dependent_views (**i);
1147                 (*i)->fake_set_opaque (false);
1148                 (*i)->move (-_total_x_delta, 0);
1149                 (*i)->set_height (rtv->view()->child_height ());
1150         }
1151
1152         _editor->update_canvas_now ();
1153 }
1154
1155
1156 bool
1157 RegionMotionDrag::x_move_allowed () const
1158 {
1159         if (Config->get_edit_mode() == Lock) {
1160                 /* in locked edit mode, reverse the usual meaning of _x_constrained */
1161                 return _x_constrained;
1162         }
1163
1164         return !_x_constrained;
1165 }
1166
1167 void
1168 RegionMotionDrag::copy_regions (GdkEvent* event)
1169 {
1170         /* duplicate the regionview(s) and region(s) */
1171
1172         list<RegionView*> new_regionviews;
1173
1174         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1175
1176                 RegionView* rv = (*i);
1177                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1178                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1179
1180                 const boost::shared_ptr<const Region> original = rv->region();
1181                 boost::shared_ptr<Region> region_copy = RegionFactory::create (original);
1182                 region_copy->set_position (original->position(), this);
1183
1184                 RegionView* nrv;
1185                 if (arv) {
1186                         boost::shared_ptr<AudioRegion> audioregion_copy
1187                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1188
1189                         nrv = new AudioRegionView (*arv, audioregion_copy);
1190                 } else if (mrv) {
1191                         boost::shared_ptr<MidiRegion> midiregion_copy
1192                                 = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1193                         nrv = new MidiRegionView (*mrv, midiregion_copy);
1194                 } else {
1195                         continue;
1196                 }
1197
1198                 nrv->get_canvas_group()->show ();
1199                 new_regionviews.push_back (nrv);
1200
1201                 /* swap _primary to the copy */
1202
1203                 if (rv == _primary) {
1204                         _primary = nrv;
1205                 }
1206
1207                 /* ..and deselect the one we copied */
1208
1209                 rv->set_selected (false);
1210         }
1211
1212         if (new_regionviews.empty()) {
1213                 return;
1214         }
1215
1216         /* reflect the fact that we are dragging the copies */
1217
1218         _views = new_regionviews;
1219
1220         swap_grab (new_regionviews.front()->get_canvas_group (), 0, event ? event->motion.time : 0);
1221
1222         /*
1223            sync the canvas to what we think is its current state
1224            without it, the canvas seems to
1225            "forget" to update properly after the upcoming reparent()
1226            ..only if the mouse is in rapid motion at the time of the grab.
1227            something to do with regionview creation taking so long?
1228         */
1229         _editor->update_canvas_now();
1230 }
1231
1232 bool
1233 RegionMotionDrag::check_possible (RouteTimeAxisView** tv, layer_t* layer)
1234 {
1235         /* Which trackview is this ? */
1236
1237         pair<TimeAxisView*, int> const tvp = _editor->trackview_by_y_position (_drags->current_pointer_y ());
1238         (*tv) = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1239         (*layer) = tvp.second;
1240
1241         if (*tv && (*tv)->layer_display() == Overlaid) {
1242                 *layer = 0;
1243         }
1244
1245         /* The region motion is only processed if the pointer is over
1246            an audio track.
1247         */
1248
1249         if (!(*tv) || !(*tv)->is_track()) {
1250                 /* To make sure we hide the verbose canvas cursor when the mouse is
1251                    not held over and audiotrack.
1252                 */
1253                 _editor->hide_verbose_canvas_cursor ();
1254                 return false;
1255         }
1256
1257         return true;
1258 }
1259
1260 /** @param new_order New track order.
1261  *  @param old_order Old track order.
1262  *  @param visible_y_low Lowest visible order.
1263  *  @return true if y movement should not happen, otherwise false.
1264  */
1265 bool
1266 RegionMotionDrag::y_movement_disallowed (int new_order, int old_order, int y_span, TimeAxisViewSummary const & tavs) const
1267 {
1268         if (new_order != old_order) {
1269
1270                 /* this isn't the pointer track */
1271
1272                 if (y_span > 0) {
1273
1274                         /* moving up the canvas */
1275                         if ( (new_order - y_span) >= tavs.visible_y_low) {
1276
1277                                 int32_t n = 0;
1278
1279                                 /* work out where we'll end up with this y span, taking hidden TimeAxisViews into account */
1280                                 int32_t visible_tracks = 0;
1281                                 while (visible_tracks < y_span ) {
1282                                         visible_tracks++;
1283                                         while (tavs.height_list[new_order - (visible_tracks - n)] == 0) {
1284                                                 /* passing through a hidden track */
1285                                                 n--;
1286                                         }
1287                                 }
1288
1289                                 if (tavs.tracks[new_order - (y_span - n)] != 0x00) {
1290                                         /* moving to a non-track; disallow */
1291                                         return true;
1292                                 }
1293
1294
1295                         } else {
1296                                 /* moving beyond the lowest visible track; disallow */
1297                                 return true;
1298                         }
1299
1300                 } else if (y_span < 0) {
1301
1302                         /* moving down the canvas */
1303                         if ((new_order - y_span) <= tavs.visible_y_high) {
1304
1305                                 int32_t visible_tracks = 0;
1306                                 int32_t n = 0;
1307                                 while (visible_tracks > y_span ) {
1308                                         visible_tracks--;
1309
1310                                         while (tavs.height_list[new_order - (visible_tracks - n)] == 0) {
1311                                                 /* passing through a hidden track */
1312                                                 n++;
1313                                         }
1314                                 }
1315
1316                                 if (tavs.tracks[new_order - (y_span - n)] != 0x00) {
1317                                         /* moving to a non-track; disallow */
1318                                         return true;
1319                                 }
1320
1321
1322                         } else {
1323
1324                                 /* moving beyond the highest visible track; disallow */
1325                                 return true;
1326                         }
1327                 }
1328
1329         } else {
1330
1331                 /* this is the pointer's track */
1332
1333                 if ((new_order - y_span) > tavs.visible_y_high) {
1334                         /* we will overflow */
1335                         return true;
1336                 } else if ((new_order - y_span) < tavs.visible_y_low) {
1337                         /* we will overflow */
1338                         return true;
1339                 }
1340         }
1341
1342         return false;
1343 }
1344
1345
1346 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1347         : RegionMotionDrag (e, i, p, v, b),
1348           _copy (c)
1349 {
1350         TimeAxisView* const tv = &_primary->get_time_axis_view ();
1351
1352         _dest_trackview = tv;
1353         if (tv->layer_display() == Overlaid) {
1354                 _dest_layer = 0;
1355         } else {
1356                 _dest_layer = _primary->region()->layer ();
1357         }
1358
1359         double speed = 1;
1360         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1361         if (rtv && rtv->is_track()) {
1362                 speed = rtv->get_diskstream()->speed ();
1363         }
1364
1365         _last_frame_position = static_cast<nframes64_t> (_primary->region()->position() / speed);
1366 }
1367
1368 void
1369 RegionMoveDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
1370 {
1371         RegionMotionDrag::start_grab (event, c);
1372
1373         _pointer_frame_offset = grab_frame() - _last_frame_position;
1374 }
1375
1376 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, nframes64_t pos)
1377         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1378 {
1379         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1380                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1381
1382         _primary = v->view()->create_region_view (r, false, false);
1383
1384         _primary->get_canvas_group()->show ();
1385         _primary->set_position (pos, 0);
1386         _views.push_back (_primary);
1387
1388         _last_frame_position = pos;
1389
1390         _item = _primary->get_canvas_group ();
1391         _dest_trackview = v;
1392         _dest_layer = _primary->region()->layer ();
1393 }
1394
1395 map<RegionView*, pair<RouteTimeAxisView*, int> >
1396 RegionMotionDrag::find_time_axis_views_and_layers ()
1397 {
1398         map<RegionView*, pair<RouteTimeAxisView*, int> > tav;
1399
1400         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1401
1402                 double ix1, ix2, iy1, iy2;
1403                 (*i)->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
1404                 (*i)->get_canvas_frame()->i2w (ix1, iy1);
1405                 iy1 += _editor->vertical_adjustment.get_value() - _editor->canvas_timebars_vsize;
1406
1407                 pair<TimeAxisView*, int> tv = _editor->trackview_by_y_position (iy1);
1408                 tav[*i] = make_pair (dynamic_cast<RouteTimeAxisView*> (tv.first), tv.second);
1409         }
1410
1411         return tav;
1412 }
1413
1414
1415 void
1416 RegionInsertDrag::finished (GdkEvent* /*event*/, bool /*movement_occurred*/)
1417 {
1418         _editor->update_canvas_now ();
1419
1420         map<RegionView*, pair<RouteTimeAxisView*, int> > final = find_time_axis_views_and_layers ();
1421
1422         RouteTimeAxisView* dest_rtv = final[_primary].first;
1423
1424         _primary->get_canvas_group()->reparent (*dest_rtv->view()->canvas_item());
1425         _primary->get_canvas_group()->property_y() = 0;
1426
1427         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1428
1429         _editor->begin_reversible_command (_("insert region"));
1430         playlist->clear_history ();
1431         playlist->add_region (_primary->region (), _last_frame_position);
1432         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1433         _editor->commit_reversible_command ();
1434
1435         delete _primary;
1436         _primary = 0;
1437         _views.clear ();
1438 }
1439
1440 void
1441 RegionInsertDrag::aborted ()
1442 {
1443         /* XXX: TODO */
1444 }
1445
1446 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1447         : RegionMoveDrag (e, i, p, v, false, false)
1448 {
1449
1450 }
1451
1452 struct RegionSelectionByPosition {
1453     bool operator() (RegionView*a, RegionView* b) {
1454             return a->region()->position () < b->region()->position();
1455     }
1456 };
1457
1458 void
1459 RegionSpliceDrag::motion (GdkEvent* event, bool)
1460 {
1461         RouteTimeAxisView* tv;
1462         layer_t layer;
1463
1464         if (!check_possible (&tv, &layer)) {
1465                 return;
1466         }
1467
1468         int dir;
1469
1470         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1471                 dir = 1;
1472         } else {
1473                 dir = -1;
1474         }
1475
1476         RegionSelection copy (_editor->selection->regions);
1477
1478         RegionSelectionByPosition cmp;
1479         copy.sort (cmp);
1480
1481         nframes64_t const pf = adjusted_current_frame (event);
1482
1483         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1484
1485                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1486
1487                 if (!atv) {
1488                         continue;
1489                 }
1490
1491                 boost::shared_ptr<Playlist> playlist;
1492
1493                 if ((playlist = atv->playlist()) == 0) {
1494                         continue;
1495                 }
1496
1497                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1498                         continue;
1499                 }
1500
1501                 if (dir > 0) {
1502                         if (pf < (*i)->region()->last_frame() + 1) {
1503                                 continue;
1504                         }
1505                 } else {
1506                         if (pf > (*i)->region()->first_frame()) {
1507                                 continue;
1508                         }
1509                 }
1510
1511
1512                 playlist->shuffle ((*i)->region(), dir);
1513         }
1514 }
1515
1516 void
1517 RegionSpliceDrag::finished (GdkEvent* /*event*/, bool)
1518 {
1519
1520 }
1521
1522 void
1523 RegionSpliceDrag::aborted ()
1524 {
1525         /* XXX: TODO */
1526 }
1527
1528 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
1529         : Drag (e, i),
1530           _view (v)
1531 {
1532
1533 }
1534
1535 void
1536 RegionCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
1537 {
1538         _dest_trackview = _view;
1539
1540         Drag::start_grab (event);
1541 }
1542
1543
1544 void
1545 RegionCreateDrag::motion (GdkEvent* /*event*/, bool first_move)
1546 {
1547         if (first_move) {
1548                 // TODO: create region-create-drag region view here
1549         }
1550
1551         // TODO: resize region-create-drag region view here
1552 }
1553
1554 void
1555 RegionCreateDrag::finished (GdkEvent* event, bool movement_occurred)
1556 {
1557         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (_dest_trackview);
1558
1559         if (!mtv) {
1560                 return;
1561         }
1562
1563         if (!movement_occurred) {
1564                 mtv->add_region (grab_frame ());
1565         } else {
1566                 motion (event, false);
1567                 // TODO: create region-create-drag region here
1568         }
1569 }
1570
1571 void
1572 RegionCreateDrag::aborted ()
1573 {
1574         /* XXX: TODO */
1575 }
1576
1577 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
1578         : Drag (e, i)
1579         , region (0)
1580 {
1581
1582 }
1583
1584 void
1585 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
1586 {
1587         Gdk::Cursor     cursor;
1588         ArdourCanvas::CanvasNote*     cnote = dynamic_cast<ArdourCanvas::CanvasNote*>(_item);
1589
1590         Drag::start_grab (event);
1591
1592         region = &cnote->region_view();
1593
1594         double region_start = region->get_position_pixels();
1595         double middle_point = region_start + cnote->x1() + (cnote->x2() - cnote->x1()) / 2.0L;
1596
1597         if (grab_x() <= middle_point) {
1598                 cursor = Gdk::Cursor(Gdk::LEFT_SIDE);
1599                 at_front = true;
1600         } else {
1601                 cursor = Gdk::Cursor(Gdk::RIGHT_SIDE);
1602                 at_front = false;
1603         }
1604
1605         _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, cursor, event->motion.time);
1606
1607         if (event->motion.state & Keyboard::PrimaryModifier) {
1608                 relative = false;
1609         } else {
1610                 relative = true;
1611         }
1612
1613         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1614
1615         if (ms.size() > 1) {
1616                 /* has to be relative, may make no sense otherwise */
1617                 relative = true;
1618         }
1619
1620         region->note_selected (cnote, true);
1621
1622         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
1623                 MidiRegionSelection::iterator next;
1624                 next = r;
1625                 ++next;
1626                 (*r)->begin_resizing (at_front);
1627                 r = next;
1628         }
1629 }
1630
1631 void
1632 NoteResizeDrag::motion (GdkEvent* /*event*/, bool /*first_move*/)
1633 {
1634         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1635         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
1636                 (*r)->update_resizing (at_front, _drags->current_pointer_x() - grab_x(), relative);
1637         }
1638 }
1639
1640 void
1641 NoteResizeDrag::finished (GdkEvent*, bool /*movement_occurred*/)
1642 {
1643         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1644         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
1645                 (*r)->commit_resizing (at_front, _drags->current_pointer_x() - grab_x(), relative);
1646         }
1647 }
1648
1649 void
1650 NoteResizeDrag::aborted ()
1651 {
1652         /* XXX: TODO */
1653 }
1654
1655 void
1656 RegionGainDrag::motion (GdkEvent* /*event*/, bool)
1657 {
1658
1659 }
1660
1661 void
1662 RegionGainDrag::finished (GdkEvent *, bool)
1663 {
1664
1665 }
1666
1667 void
1668 RegionGainDrag::aborted ()
1669 {
1670         /* XXX: TODO */
1671 }
1672
1673 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1674         : RegionDrag (e, i, p, v)
1675         , _have_transaction (false)
1676 {
1677
1678 }
1679
1680 void
1681 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
1682 {
1683         double speed = 1.0;
1684         TimeAxisView* tvp = &_primary->get_time_axis_view ();
1685         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
1686
1687         if (tv && tv->is_track()) {
1688                 speed = tv->get_diskstream()->speed();
1689         }
1690
1691         nframes64_t region_start = (nframes64_t) (_primary->region()->position() / speed);
1692         nframes64_t region_end = (nframes64_t) (_primary->region()->last_frame() / speed);
1693         nframes64_t region_length = (nframes64_t) (_primary->region()->length() / speed);
1694
1695         Drag::start_grab (event, _editor->trimmer_cursor);
1696
1697         nframes64_t const pf = adjusted_current_frame (event);
1698
1699         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
1700                 _operation = ContentsTrim;
1701         } else {
1702                 /* These will get overridden for a point trim.*/
1703                 if (pf < (region_start + region_length/2)) {
1704                         /* closer to start */
1705                         _operation = StartTrim;
1706                 } else if (pf > (region_end - region_length/2)) {
1707                         /* closer to end */
1708                         _operation = EndTrim;
1709                 }
1710         }
1711
1712         switch (_operation) {
1713         case StartTrim:
1714                 _editor->show_verbose_time_cursor (region_start, 10);
1715                 break;
1716         case EndTrim:
1717                 _editor->show_verbose_time_cursor (region_end, 10);
1718                 break;
1719         case ContentsTrim:
1720                 _editor->show_verbose_time_cursor (pf, 10);
1721                 break;
1722         }
1723 }
1724
1725 void
1726 TrimDrag::motion (GdkEvent* event, bool first_move)
1727 {
1728         RegionView* rv = _primary;
1729         nframes64_t frame_delta = 0;
1730
1731         bool left_direction;
1732         bool obey_snap = event ? !Keyboard::modifier_state_contains (event->button.state, Keyboard::snap_modifier()) : false;
1733
1734         /* snap modifier works differently here..
1735            its current state has to be passed to the
1736            various trim functions in order to work properly
1737         */
1738
1739         double speed = 1.0;
1740         TimeAxisView* tvp = &_primary->get_time_axis_view ();
1741         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
1742         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
1743
1744         if (tv && tv->is_track()) {
1745                 speed = tv->get_diskstream()->speed();
1746         }
1747
1748         nframes64_t const pf = adjusted_current_frame (event);
1749
1750         if (last_pointer_frame() > pf) {
1751                 left_direction = true;
1752         } else {
1753                 left_direction = false;
1754         }
1755
1756         if (first_move) {
1757
1758                 string trim_type;
1759
1760                 switch (_operation) {
1761                 case StartTrim:
1762                         trim_type = "Region start trim";
1763                         break;
1764                 case EndTrim:
1765                         trim_type = "Region end trim";
1766                         break;
1767                 case ContentsTrim:
1768                         trim_type = "Region content trim";
1769                         break;
1770                 }
1771
1772                 _editor->begin_reversible_command (trim_type);
1773                 _have_transaction = true;
1774
1775                 for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1776                         (*i)->fake_set_opaque(false);
1777                         (*i)->region()->clear_history ();
1778                         (*i)->region()->suspend_property_changes ();
1779
1780                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*i);
1781
1782                         if (arv){
1783                                 arv->temporarily_hide_envelope ();
1784                         }
1785
1786                         boost::shared_ptr<Playlist> pl = (*i)->region()->playlist();
1787                         insert_result = _editor->motion_frozen_playlists.insert (pl);
1788
1789                         if (insert_result.second) {
1790                                 pl->freeze();
1791                         }
1792                 }
1793         }
1794
1795         if (left_direction) {
1796                 frame_delta = (last_pointer_frame() - pf);
1797         } else {
1798                 frame_delta = (pf - last_pointer_frame());
1799         }
1800
1801         bool non_overlap_trim = false;
1802
1803         if (event && Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
1804                 non_overlap_trim = true;
1805         }
1806
1807         switch (_operation) {
1808         case StartTrim:
1809                 if ((left_direction == false) && (pf <= rv->region()->first_frame()/speed)) {
1810                         break;
1811                 } else {
1812
1813                         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1814                                 _editor->single_start_trim (**i, frame_delta, left_direction, obey_snap, non_overlap_trim);
1815                         }
1816                         break;
1817                 }
1818
1819         case EndTrim:
1820                 if ((left_direction == true) && (pf > (nframes64_t) (rv->region()->last_frame()/speed))) {
1821                         break;
1822                 } else {
1823
1824                         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1825                                 _editor->single_end_trim (**i, frame_delta, left_direction, obey_snap, non_overlap_trim);
1826                         }
1827                         break;
1828                 }
1829
1830         case ContentsTrim:
1831                 {
1832                         bool swap_direction = false;
1833
1834                         if (event && Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
1835                                 swap_direction = true;
1836                         }
1837
1838                         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1839                                 _editor->single_contents_trim (**i, frame_delta, left_direction, swap_direction, obey_snap);
1840                         }
1841                 }
1842                 break;
1843         }
1844
1845         switch (_operation) {
1846         case StartTrim:
1847                 _editor->show_verbose_time_cursor((nframes64_t) (rv->region()->position()/speed), 10);
1848                 break;
1849         case EndTrim:
1850                 _editor->show_verbose_time_cursor((nframes64_t) (rv->region()->last_frame()/speed), 10);
1851                 break;
1852         case ContentsTrim:
1853                 _editor->show_verbose_time_cursor (pf, 10);
1854                 break;
1855         }
1856 }
1857
1858
1859 void
1860 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
1861 {
1862         if (movement_occurred) {
1863                 motion (event, false);
1864
1865                 if (!_editor->selection->selected (_primary)) {
1866                         _editor->thaw_region_after_trim (*_primary);
1867                 } else {
1868
1869                         for (list<RegionView*>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1870                                 _editor->thaw_region_after_trim (**i);
1871                                 (*i)->fake_set_opaque (true);
1872                                 if (_have_transaction) {
1873                                         _editor->session()->add_command (new StatefulDiffCommand ((*i)->region()));
1874                                 }
1875                         }
1876                 }
1877                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
1878                         (*p)->thaw ();
1879                 }
1880
1881                 _editor->motion_frozen_playlists.clear ();
1882
1883                 if (_have_transaction) {
1884                         _editor->commit_reversible_command();
1885                 }
1886
1887         } else {
1888                 /* no mouse movement */
1889                 _editor->point_trim (event, adjusted_current_frame (event));
1890         }
1891 }
1892
1893 void
1894 TrimDrag::aborted ()
1895 {
1896         /* Our motion method is changing model state, so use the Undo system
1897            to cancel.  Perhaps not ideal, as this will leave an Undo point
1898            behind which may be slightly odd from the user's point of view.
1899         */
1900
1901         finished (0, true);
1902
1903         if (_have_transaction) {
1904                 _editor->undo ();
1905         }
1906 }
1907
1908 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
1909         : Drag (e, i),
1910           _copy (c)
1911 {
1912         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
1913         assert (_marker);
1914 }
1915
1916 void
1917 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
1918 {
1919         if (_copy) {
1920                 // create a dummy marker for visual representation of moving the copy.
1921                 // The actual copying is not done before we reach the finish callback.
1922                 char name[64];
1923                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().beats_per_bar(), _marker->meter().note_divisor ());
1924                 MeterMarker* new_marker = new MeterMarker(*_editor, *_editor->meter_group, ARDOUR_UI::config()->canvasvar_MeterMarker.get(), name,
1925                                                           *new MeterSection (_marker->meter()));
1926
1927                 _item = &new_marker->the_item ();
1928                 _marker = new_marker;
1929
1930         } else {
1931
1932                 MetricSection& section (_marker->meter());
1933
1934                 if (!section.movable()) {
1935                         return;
1936                 }
1937
1938         }
1939
1940         Drag::start_grab (event, cursor);
1941
1942         _pointer_frame_offset = grab_frame() - _marker->meter().frame();
1943
1944         _editor->show_verbose_time_cursor (adjusted_current_frame(event), 10);
1945 }
1946
1947 void
1948 MeterMarkerDrag::motion (GdkEvent* event, bool)
1949 {
1950         nframes64_t const pf = adjusted_current_frame (event);
1951
1952         _marker->set_position (pf);
1953
1954         _editor->show_verbose_time_cursor (pf, 10);
1955 }
1956
1957 void
1958 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
1959 {
1960         if (!movement_occurred) {
1961                 return;
1962         }
1963
1964         motion (event, false);
1965
1966         BBT_Time when;
1967
1968         TempoMap& map (_editor->session()->tempo_map());
1969         map.bbt_time (last_pointer_frame(), when);
1970
1971         if (_copy == true) {
1972                 _editor->begin_reversible_command (_("copy meter mark"));
1973                 XMLNode &before = map.get_state();
1974                 map.add_meter (_marker->meter(), when);
1975                 XMLNode &after = map.get_state();
1976                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
1977                 _editor->commit_reversible_command ();
1978
1979                 // delete the dummy marker we used for visual representation of copying.
1980                 // a new visual marker will show up automatically.
1981                 delete _marker;
1982         } else {
1983                 _editor->begin_reversible_command (_("move meter mark"));
1984                 XMLNode &before = map.get_state();
1985                 map.move_meter (_marker->meter(), when);
1986                 XMLNode &after = map.get_state();
1987                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
1988                 _editor->commit_reversible_command ();
1989         }
1990 }
1991
1992 void
1993 MeterMarkerDrag::aborted ()
1994 {
1995         _marker->set_position (_marker->meter().frame ());
1996 }
1997
1998 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
1999         : Drag (e, i),
2000           _copy (c)
2001 {
2002         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
2003         assert (_marker);
2004 }
2005
2006 void
2007 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2008 {
2009
2010         if (_copy) {
2011
2012                 // create a dummy marker for visual representation of moving the copy.
2013                 // The actual copying is not done before we reach the finish callback.
2014                 char name[64];
2015                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
2016                 TempoMarker* new_marker = new TempoMarker(*_editor, *_editor->tempo_group, ARDOUR_UI::config()->canvasvar_TempoMarker.get(), name,
2017                                                           *new TempoSection (_marker->tempo()));
2018
2019                 _item = &new_marker->the_item ();
2020                 _marker = new_marker;
2021
2022         } else {
2023
2024                 MetricSection& section (_marker->tempo());
2025
2026                 if (!section.movable()) {
2027                         return;
2028                 }
2029         }
2030
2031         Drag::start_grab (event, cursor);
2032
2033         _pointer_frame_offset = grab_frame() - _marker->tempo().frame();
2034         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
2035 }
2036
2037 void
2038 TempoMarkerDrag::motion (GdkEvent* event, bool)
2039 {
2040         nframes64_t const pf = adjusted_current_frame (event);
2041         _marker->set_position (pf);
2042         _editor->show_verbose_time_cursor (pf, 10);
2043 }
2044
2045 void
2046 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
2047 {
2048         if (!movement_occurred) {
2049                 return;
2050         }
2051
2052         motion (event, false);
2053
2054         BBT_Time when;
2055
2056         TempoMap& map (_editor->session()->tempo_map());
2057         map.bbt_time (last_pointer_frame(), when);
2058
2059         if (_copy == true) {
2060                 _editor->begin_reversible_command (_("copy tempo mark"));
2061                 XMLNode &before = map.get_state();
2062                 map.add_tempo (_marker->tempo(), when);
2063                 XMLNode &after = map.get_state();
2064                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
2065                 _editor->commit_reversible_command ();
2066
2067                 // delete the dummy marker we used for visual representation of copying.
2068                 // a new visual marker will show up automatically.
2069                 delete _marker;
2070         } else {
2071                 _editor->begin_reversible_command (_("move tempo mark"));
2072                 XMLNode &before = map.get_state();
2073                 map.move_tempo (_marker->tempo(), when);
2074                 XMLNode &after = map.get_state();
2075                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
2076                 _editor->commit_reversible_command ();
2077         }
2078 }
2079
2080 void
2081 TempoMarkerDrag::aborted ()
2082 {
2083         _marker->set_position (_marker->tempo().frame());
2084 }
2085
2086 CursorDrag::CursorDrag (Editor* e, ArdourCanvas::Item* i, bool s)
2087         : Drag (e, i),
2088           _stop (s)
2089 {
2090         _cursor = reinterpret_cast<EditorCursor*> (_item->get_data ("cursor"));
2091         assert (_cursor);
2092 }
2093
2094 void
2095 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
2096 {
2097         Drag::start_grab (event, c);
2098
2099         if (!_stop) {
2100
2101                 nframes64_t where = _editor->event_frame (event, 0, 0);
2102
2103                 _editor->snap_to_with_modifier (where, event);
2104                 _editor->playhead_cursor->set_position (where);
2105
2106         }
2107
2108         if (_cursor == _editor->playhead_cursor) {
2109                 _editor->_dragging_playhead = true;
2110
2111                 if (_editor->session() && _was_rolling && _stop) {
2112                         _editor->session()->request_stop ();
2113                 }
2114
2115                 if (_editor->session() && _editor->session()->is_auditioning()) {
2116                         _editor->session()->cancel_audition ();
2117                 }
2118         }
2119
2120         _pointer_frame_offset = grab_frame() - _cursor->current_frame;
2121
2122         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2123 }
2124
2125 void
2126 CursorDrag::motion (GdkEvent* event, bool)
2127 {
2128         nframes64_t const adjusted_frame = adjusted_current_frame (event);
2129
2130         if (adjusted_frame == last_pointer_frame()) {
2131                 return;
2132         }
2133
2134         _cursor->set_position (adjusted_frame);
2135
2136         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2137
2138 #ifdef GTKOSX
2139         _editor->update_canvas_now ();
2140 #endif
2141         _editor->UpdateAllTransportClocks (_cursor->current_frame);
2142 }
2143
2144 void
2145 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
2146 {
2147         _editor->_dragging_playhead = false;
2148
2149         if (!movement_occurred && _stop) {
2150                 return;
2151         }
2152
2153         motion (event, false);
2154
2155         if (_item == &_editor->playhead_cursor->canvas_item) {
2156                 if (_editor->session()) {
2157                         _editor->session()->request_locate (_editor->playhead_cursor->current_frame, _was_rolling);
2158                         _editor->_pending_locate_request = true;
2159                 }
2160         }
2161 }
2162
2163 void
2164 CursorDrag::aborted ()
2165 {
2166         _editor->_dragging_playhead = false;
2167         _cursor->set_position (adjusted_frame (grab_frame (), 0, false));
2168 }
2169
2170 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2171         : RegionDrag (e, i, p, v)
2172 {
2173
2174 }
2175
2176 void
2177 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2178 {
2179         Drag::start_grab (event, cursor);
2180
2181         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2182         boost::shared_ptr<AudioRegion> const r = a->audio_region ();
2183
2184         _pointer_frame_offset = grab_frame() - ((nframes64_t) r->fade_in()->back()->when + r->position());
2185         _editor->show_verbose_duration_cursor (r->position(), r->position() + r->fade_in()->back()->when, 10);
2186 }
2187
2188 void
2189 FadeInDrag::motion (GdkEvent* event, bool)
2190 {
2191         nframes64_t fade_length;
2192
2193         nframes64_t const pos = adjusted_current_frame (event);
2194
2195         boost::shared_ptr<Region> region = _primary->region ();
2196
2197         if (pos < (region->position() + 64)) {
2198                 fade_length = 64; // this should be a minimum defined somewhere
2199         } else if (pos > region->last_frame()) {
2200                 fade_length = region->length();
2201         } else {
2202                 fade_length = pos - region->position();
2203         }
2204
2205         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2206
2207                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2208
2209                 if (!tmp) {
2210                         continue;
2211                 }
2212
2213                 tmp->reset_fade_in_shape_width (fade_length);
2214         }
2215
2216         _editor->show_verbose_duration_cursor (region->position(), region->position() + fade_length, 10);
2217 }
2218
2219 void
2220 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
2221 {
2222         if (!movement_occurred) {
2223                 return;
2224         }
2225
2226         nframes64_t fade_length;
2227
2228         nframes64_t const pos = adjusted_current_frame (event);
2229
2230         boost::shared_ptr<Region> region = _primary->region ();
2231
2232         if (pos < (region->position() + 64)) {
2233                 fade_length = 64; // this should be a minimum defined somewhere
2234         } else if (pos > region->last_frame()) {
2235                 fade_length = region->length();
2236         } else {
2237                 fade_length = pos - region->position();
2238         }
2239
2240         _editor->begin_reversible_command (_("change fade in length"));
2241
2242         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2243
2244                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2245
2246                 if (!tmp) {
2247                         continue;
2248                 }
2249
2250                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
2251                 XMLNode &before = alist->get_state();
2252
2253                 tmp->audio_region()->set_fade_in_length (fade_length);
2254                 tmp->audio_region()->set_fade_in_active (true);
2255
2256                 XMLNode &after = alist->get_state();
2257                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2258         }
2259
2260         _editor->commit_reversible_command ();
2261 }
2262
2263 void
2264 FadeInDrag::aborted ()
2265 {
2266         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2267                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2268
2269                 if (!tmp) {
2270                         continue;
2271                 }
2272
2273                 tmp->reset_fade_in_shape_width (tmp->audio_region()->fade_in()->back()->when);
2274         }
2275 }
2276
2277 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2278         : RegionDrag (e, i, p, v)
2279 {
2280
2281 }
2282
2283 void
2284 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2285 {
2286         Drag::start_grab (event, cursor);
2287
2288         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2289         boost::shared_ptr<AudioRegion> r = a->audio_region ();
2290
2291         _pointer_frame_offset = grab_frame() - (r->length() - (nframes64_t) r->fade_out()->back()->when + r->position());
2292         _editor->show_verbose_duration_cursor (r->last_frame() - r->fade_out()->back()->when, r->last_frame(), 10);
2293 }
2294
2295 void
2296 FadeOutDrag::motion (GdkEvent* event, bool)
2297 {
2298         nframes64_t fade_length;
2299
2300         nframes64_t const pos = adjusted_current_frame (event);
2301
2302         boost::shared_ptr<Region> region = _primary->region ();
2303
2304         if (pos > (region->last_frame() - 64)) {
2305                 fade_length = 64; // this should really be a minimum fade defined somewhere
2306         }
2307         else if (pos < region->position()) {
2308                 fade_length = region->length();
2309         }
2310         else {
2311                 fade_length = region->last_frame() - pos;
2312         }
2313
2314         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2315
2316                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2317
2318                 if (!tmp) {
2319                         continue;
2320                 }
2321
2322                 tmp->reset_fade_out_shape_width (fade_length);
2323         }
2324
2325         _editor->show_verbose_duration_cursor (region->last_frame() - fade_length, region->last_frame(), 10);
2326 }
2327
2328 void
2329 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
2330 {
2331         if (!movement_occurred) {
2332                 return;
2333         }
2334
2335         nframes64_t fade_length;
2336
2337         nframes64_t const pos = adjusted_current_frame (event);
2338
2339         boost::shared_ptr<Region> region = _primary->region ();
2340
2341         if (pos > (region->last_frame() - 64)) {
2342                 fade_length = 64; // this should really be a minimum fade defined somewhere
2343         }
2344         else if (pos < region->position()) {
2345                 fade_length = region->length();
2346         }
2347         else {
2348                 fade_length = region->last_frame() - pos;
2349         }
2350
2351         _editor->begin_reversible_command (_("change fade out length"));
2352
2353         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2354
2355                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2356
2357                 if (!tmp) {
2358                         continue;
2359                 }
2360
2361                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
2362                 XMLNode &before = alist->get_state();
2363
2364                 tmp->audio_region()->set_fade_out_length (fade_length);
2365                 tmp->audio_region()->set_fade_out_active (true);
2366
2367                 XMLNode &after = alist->get_state();
2368                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2369         }
2370
2371         _editor->commit_reversible_command ();
2372 }
2373
2374 void
2375 FadeOutDrag::aborted ()
2376 {
2377         for (RegionSelection::iterator i = _views.begin(); i != _views.end(); ++i) {
2378                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (*i);
2379
2380                 if (!tmp) {
2381                         continue;
2382                 }
2383
2384                 tmp->reset_fade_out_shape_width (tmp->audio_region()->fade_out()->back()->when);
2385         }
2386 }
2387
2388 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
2389         : Drag (e, i)
2390 {
2391         _marker = reinterpret_cast<Marker*> (_item->get_data ("marker"));
2392         assert (_marker);
2393
2394         _points.push_back (Gnome::Art::Point (0, 0));
2395         _points.push_back (Gnome::Art::Point (0, _editor->physical_screen_height));
2396
2397         _line = new ArdourCanvas::Line (*_editor->timebar_group);
2398         _line->property_width_pixels() = 1;
2399         _line->property_points () = _points;
2400         _line->hide ();
2401
2402         _line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
2403 }
2404
2405 MarkerDrag::~MarkerDrag ()
2406 {
2407         for (list<Location*>::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
2408                 delete *i;
2409         }
2410 }
2411
2412 void
2413 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2414 {
2415         Drag::start_grab (event, cursor);
2416
2417         bool is_start;
2418
2419         Location *location = _editor->find_location_from_marker (_marker, is_start);
2420         _editor->_dragging_edit_point = true;
2421
2422         _pointer_frame_offset = grab_frame() - (is_start ? location->start() : location->end());
2423
2424         update_item (location);
2425
2426         // _drag_line->show();
2427         // _line->raise_to_top();
2428
2429         if (is_start) {
2430                 _editor->show_verbose_time_cursor (location->start(), 10);
2431         } else {
2432                 _editor->show_verbose_time_cursor (location->end(), 10);
2433         }
2434
2435         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2436
2437         switch (op) {
2438         case Selection::Toggle:
2439                 _editor->selection->toggle (_marker);
2440                 break;
2441         case Selection::Set:
2442                 if (!_editor->selection->selected (_marker)) {
2443                         _editor->selection->set (_marker);
2444                 }
2445                 break;
2446         case Selection::Extend:
2447         {
2448                 Locations::LocationList ll;
2449                 list<Marker*> to_add;
2450                 nframes64_t s, e;
2451                 _editor->selection->markers.range (s, e);
2452                 s = min (_marker->position(), s);
2453                 e = max (_marker->position(), e);
2454                 s = min (s, e);
2455                 e = max (s, e);
2456                 if (e < max_frames) {
2457                         ++e;
2458                 }
2459                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
2460                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
2461                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
2462                         if (lm) {
2463                                 if (lm->start) {
2464                                         to_add.push_back (lm->start);
2465                                 }
2466                                 if (lm->end) {
2467                                         to_add.push_back (lm->end);
2468                                 }
2469                         }
2470                 }
2471                 if (!to_add.empty()) {
2472                         _editor->selection->add (to_add);
2473                 }
2474                 break;
2475         }
2476         case Selection::Add:
2477                 _editor->selection->add (_marker);
2478                 break;
2479         }
2480
2481         /* set up copies for us to manipulate during the drag */
2482
2483         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
2484                 Location *l = _editor->find_location_from_marker (*i, is_start);
2485                 _copied_locations.push_back (new Location (*l));
2486         }
2487 }
2488
2489 void
2490 MarkerDrag::motion (GdkEvent* event, bool)
2491 {
2492         nframes64_t f_delta = 0;
2493         bool is_start;
2494         bool move_both = false;
2495         Marker* marker;
2496         Location  *real_location;
2497         Location *copy_location = 0;
2498
2499         nframes64_t const newframe = adjusted_current_frame (event);
2500
2501         nframes64_t next = newframe;
2502
2503         if (newframe == last_pointer_frame()) {
2504                 return;
2505         }
2506
2507         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
2508                 move_both = true;
2509         }
2510
2511         MarkerSelection::iterator i;
2512         list<Location*>::iterator x;
2513
2514         /* find the marker we're dragging, and compute the delta */
2515
2516         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2517              x != _copied_locations.end() && i != _editor->selection->markers.end();
2518              ++i, ++x) {
2519
2520                 copy_location = *x;
2521                 marker = *i;
2522
2523                 if (marker == _marker) {
2524
2525                         if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2526                                 /* que pasa ?? */
2527                                 return;
2528                         }
2529
2530                         if (real_location->is_mark()) {
2531                                 f_delta = newframe - copy_location->start();
2532                         } else {
2533
2534
2535                                 switch (marker->type()) {
2536                                 case Marker::Start:
2537                                 case Marker::LoopStart:
2538                                 case Marker::PunchIn:
2539                                         f_delta = newframe - copy_location->start();
2540                                         break;
2541
2542                                 case Marker::End:
2543                                 case Marker::LoopEnd:
2544                                 case Marker::PunchOut:
2545                                         f_delta = newframe - copy_location->end();
2546                                         break;
2547                                 default:
2548                                         /* what kind of marker is this ? */
2549                                         return;
2550                                 }
2551                         }
2552                         break;
2553                 }
2554         }
2555
2556         if (i == _editor->selection->markers.end()) {
2557                 /* hmm, impossible - we didn't find the dragged marker */
2558                 return;
2559         }
2560
2561         /* now move them all */
2562
2563         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2564              x != _copied_locations.end() && i != _editor->selection->markers.end();
2565              ++i, ++x) {
2566
2567                 copy_location = *x;
2568                 marker = *i;
2569
2570                 /* call this to find out if its the start or end */
2571
2572                 if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2573                         continue;
2574                 }
2575
2576                 if (real_location->locked()) {
2577                         continue;
2578                 }
2579
2580                 if (copy_location->is_mark()) {
2581
2582                         /* just move it */
2583
2584                         copy_location->set_start (copy_location->start() + f_delta);
2585
2586                 } else {
2587
2588                         nframes64_t new_start = copy_location->start() + f_delta;
2589                         nframes64_t new_end = copy_location->end() + f_delta;
2590
2591                         if (is_start) { // start-of-range marker
2592
2593                                 if (move_both) {
2594                                         copy_location->set_start (new_start);
2595                                         copy_location->set_end (new_end);
2596                                 } else  if (new_start < copy_location->end()) {
2597                                         copy_location->set_start (new_start);
2598                                 } else {
2599                                         _editor->snap_to (next, 1, true);
2600                                         copy_location->set_end (next);
2601                                         copy_location->set_start (newframe);
2602                                 }
2603
2604                         } else { // end marker
2605
2606                                 if (move_both) {
2607                                         copy_location->set_end (new_end);
2608                                         copy_location->set_start (new_start);
2609                                 } else if (new_end > copy_location->start()) {
2610                                         copy_location->set_end (new_end);
2611                                 } else if (newframe > 0) {
2612                                         _editor->snap_to (next, -1, true);
2613                                         copy_location->set_start (next);
2614                                         copy_location->set_end (newframe);
2615                                 }
2616                         }
2617                 }
2618
2619                 update_item (copy_location);
2620
2621                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
2622
2623                 if (lm) {
2624                         lm->set_position (copy_location->start(), copy_location->end());
2625                 }
2626         }
2627
2628         assert (!_copied_locations.empty());
2629
2630         _editor->show_verbose_time_cursor (newframe, 10);
2631
2632 #ifdef GTKOSX
2633         _editor->update_canvas_now ();
2634 #endif
2635 }
2636
2637 void
2638 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
2639 {
2640         if (!movement_occurred) {
2641
2642                 /* just a click, do nothing but finish
2643                    off the selection process
2644                 */
2645
2646                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2647
2648                 switch (op) {
2649                 case Selection::Set:
2650                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
2651                                 _editor->selection->set (_marker);
2652                         }
2653                         break;
2654
2655                 case Selection::Toggle:
2656                 case Selection::Extend:
2657                 case Selection::Add:
2658                         break;
2659                 }
2660
2661                 return;
2662         }
2663
2664         _editor->_dragging_edit_point = false;
2665
2666         _editor->begin_reversible_command ( _("move marker") );
2667         XMLNode &before = _editor->session()->locations()->get_state();
2668
2669         MarkerSelection::iterator i;
2670         list<Location*>::iterator x;
2671         bool is_start;
2672
2673         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2674              x != _copied_locations.end() && i != _editor->selection->markers.end();
2675              ++i, ++x) {
2676
2677                 Location * location = _editor->find_location_from_marker (*i, is_start);
2678
2679                 if (location) {
2680
2681                         if (location->locked()) {
2682                                 return;
2683                         }
2684
2685                         if (location->is_mark()) {
2686                                 location->set_start ((*x)->start());
2687                         } else {
2688                                 location->set ((*x)->start(), (*x)->end());
2689                         }
2690                 }
2691         }
2692
2693         XMLNode &after = _editor->session()->locations()->get_state();
2694         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
2695         _editor->commit_reversible_command ();
2696
2697         _line->hide();
2698 }
2699
2700 void
2701 MarkerDrag::aborted ()
2702 {
2703         /* XXX: TODO */
2704 }
2705
2706 void
2707 MarkerDrag::update_item (Location* location)
2708 {
2709         double const x1 = _editor->frame_to_pixel (location->start());
2710
2711         _points.front().set_x(x1);
2712         _points.back().set_x(x1);
2713         _line->property_points() = _points;
2714 }
2715
2716 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
2717         : Drag (e, i),
2718           _cumulative_x_drag (0),
2719           _cumulative_y_drag (0)
2720 {
2721         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
2722         assert (_point);
2723 }
2724
2725
2726 void
2727 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2728 {
2729         Drag::start_grab (event, _editor->fader_cursor);
2730
2731         // start the grab at the center of the control point so
2732         // the point doesn't 'jump' to the mouse after the first drag
2733         _time_axis_view_grab_x = _point->get_x();
2734         _time_axis_view_grab_y = _point->get_y();
2735
2736         float const fraction = 1 - (_point->get_y() / _point->line().height());
2737
2738         _point->line().start_drag_single (_point, _time_axis_view_grab_x, fraction);
2739
2740         _editor->set_verbose_canvas_cursor (_point->line().get_verbose_cursor_string (fraction),
2741                                             event->button.x + 10, event->button.y + 10);
2742
2743         _editor->show_verbose_canvas_cursor ();
2744 }
2745
2746 void
2747 ControlPointDrag::motion (GdkEvent* event, bool)
2748 {
2749         double dx = _drags->current_pointer_x() - last_pointer_x();
2750         double dy = _drags->current_pointer_y() - last_pointer_y();
2751
2752         if (event->button.state & Keyboard::SecondaryModifier) {
2753                 dx *= 0.1;
2754                 dy *= 0.1;
2755         }
2756
2757         /* coordinate in TimeAxisView's space */
2758         double cx = _time_axis_view_grab_x + _cumulative_x_drag + dx;
2759         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2760
2761         // calculate zero crossing point. back off by .01 to stay on the
2762         // positive side of zero
2763         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
2764
2765         // make sure we hit zero when passing through
2766         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
2767                 cy = zero_gain_y;
2768         }
2769
2770         if (_x_constrained) {
2771                 cx = _time_axis_view_grab_x;
2772         }
2773         if (_y_constrained) {
2774                 cy = _time_axis_view_grab_y;
2775         }
2776
2777         _cumulative_x_drag = cx - _time_axis_view_grab_x;
2778         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2779
2780         cx = max (0.0, cx);
2781         cy = max (0.0, cy);
2782         cy = min ((double) _point->line().height(), cy);
2783
2784         nframes64_t cx_frames = _editor->unit_to_frame (cx);
2785
2786         if (!_x_constrained) {
2787                 _editor->snap_to_with_modifier (cx_frames, event);
2788         }
2789
2790         float const fraction = 1.0 - (cy / _point->line().height());
2791
2792         bool const push = Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier);
2793
2794         _point->line().drag_motion (_editor->frame_to_unit (cx_frames), fraction, false, push);
2795
2796         _editor->set_verbose_canvas_cursor_text (_point->line().get_verbose_cursor_string (fraction));
2797 }
2798
2799 void
2800 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
2801 {
2802         if (!movement_occurred) {
2803
2804                 /* just a click */
2805
2806                 if ((event->type == GDK_BUTTON_RELEASE) && (event->button.button == 1) && Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
2807                         _editor->reset_point_selection ();
2808                 }
2809
2810         } else {
2811                 motion (event, false);
2812         }
2813         _point->line().end_drag ();
2814 }
2815
2816 void
2817 ControlPointDrag::aborted ()
2818 {
2819         _point->line().reset ();
2820 }
2821
2822 bool
2823 ControlPointDrag::active (Editing::MouseMode m)
2824 {
2825         if (m == Editing::MouseGain) {
2826                 /* always active in mouse gain */
2827                 return true;
2828         }
2829
2830         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
2831         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
2832 }
2833
2834 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
2835         : Drag (e, i),
2836           _line (0),
2837           _cumulative_y_drag (0)
2838 {
2839
2840 }
2841 void
2842 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2843 {
2844         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
2845         assert (_line);
2846
2847         _item = &_line->grab_item ();
2848
2849         /* need to get x coordinate in terms of parent (TimeAxisItemView)
2850            origin, and ditto for y.
2851         */
2852
2853         double cx = event->button.x;
2854         double cy = event->button.y;
2855
2856         _line->parent_group().w2i (cx, cy);
2857
2858         nframes64_t const frame_within_region = (nframes64_t) floor (cx * _editor->frames_per_unit);
2859
2860         uint32_t before;
2861         uint32_t after;
2862
2863         if (!_line->control_points_adjacent (frame_within_region, before, after)) {
2864                 /* no adjacent points */
2865                 return;
2866         }
2867
2868         Drag::start_grab (event, _editor->fader_cursor);
2869
2870         /* store grab start in parent frame */
2871
2872         _time_axis_view_grab_x = cx;
2873         _time_axis_view_grab_y = cy;
2874
2875         double fraction = 1.0 - (cy / _line->height());
2876
2877         _line->start_drag_line (before, after, fraction);
2878
2879         _editor->set_verbose_canvas_cursor (_line->get_verbose_cursor_string (fraction),
2880                                             event->button.x + 10, event->button.y + 10);
2881
2882         _editor->show_verbose_canvas_cursor ();
2883 }
2884
2885 void
2886 LineDrag::motion (GdkEvent* event, bool)
2887 {
2888         double dy = _drags->current_pointer_y() - last_pointer_y();
2889
2890         if (event->button.state & Keyboard::SecondaryModifier) {
2891                 dy *= 0.1;
2892         }
2893
2894         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2895
2896         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2897
2898         cy = max (0.0, cy);
2899         cy = min ((double) _line->height(), cy);
2900
2901         double const fraction = 1.0 - (cy / _line->height());
2902
2903         bool push;
2904
2905         if (Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier)) {
2906                 push = false;
2907         } else {
2908                 push = true;
2909         }
2910
2911         /* we are ignoring x position for this drag, so we can just pass in anything */
2912         _line->drag_motion (0, fraction, true, push);
2913
2914         _editor->set_verbose_canvas_cursor_text (_line->get_verbose_cursor_string (fraction));
2915 }
2916
2917 void
2918 LineDrag::finished (GdkEvent* event, bool)
2919 {
2920         motion (event, false);
2921         _line->end_drag ();
2922 }
2923
2924 void
2925 LineDrag::aborted ()
2926 {
2927         _line->reset ();
2928 }
2929
2930 void
2931 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
2932 {
2933         Drag::start_grab (event);
2934         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
2935 }
2936
2937 void
2938 RubberbandSelectDrag::motion (GdkEvent* event, bool)
2939 {
2940         nframes64_t start;
2941         nframes64_t end;
2942         double y1;
2943         double y2;
2944
2945         nframes64_t const pf = adjusted_current_frame (event, Config->get_rubberbanding_snaps_to_grid ());
2946
2947         nframes64_t grab = grab_frame ();
2948         if (Config->get_rubberbanding_snaps_to_grid ()) {
2949                 _editor->snap_to_with_modifier (grab, event);
2950         }
2951
2952         /* base start and end on initial click position */
2953
2954         if (pf < grab) {
2955                 start = pf;
2956                 end = grab;
2957         } else {
2958                 end = pf;
2959                 start = grab;
2960         }
2961
2962         if (_drags->current_pointer_y() < grab_y()) {
2963                 y1 = _drags->current_pointer_y();
2964                 y2 = grab_y();
2965         } else {
2966                 y2 = _drags->current_pointer_y();
2967                 y1 = grab_y();
2968         }
2969
2970
2971         if (start != end || y1 != y2) {
2972
2973                 double x1 = _editor->frame_to_pixel (start);
2974                 double x2 = _editor->frame_to_pixel (end);
2975
2976                 _editor->rubberband_rect->property_x1() = x1;
2977                 _editor->rubberband_rect->property_y1() = y1;
2978                 _editor->rubberband_rect->property_x2() = x2;
2979                 _editor->rubberband_rect->property_y2() = y2;
2980
2981                 _editor->rubberband_rect->show();
2982                 _editor->rubberband_rect->raise_to_top();
2983
2984                 _editor->show_verbose_time_cursor (pf, 10);
2985         }
2986 }
2987
2988 void
2989 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
2990 {
2991         if (movement_occurred) {
2992
2993                 motion (event, false);
2994
2995                 double y1,y2;
2996                 if (_drags->current_pointer_y() < grab_y()) {
2997                         y1 = _drags->current_pointer_y();
2998                         y2 = grab_y();
2999                 } else {
3000                         y2 = _drags->current_pointer_y();
3001                         y1 = grab_y();
3002                 }
3003
3004
3005                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3006                 bool committed;
3007
3008                 _editor->begin_reversible_command (_("rubberband selection"));
3009
3010                 if (grab_frame() < last_pointer_frame()) {
3011                         committed = _editor->select_all_within (grab_frame(), last_pointer_frame() - 1, y1, y2, _editor->track_views, op);
3012                 } else {
3013                         committed = _editor->select_all_within (last_pointer_frame(), grab_frame() - 1, y1, y2, _editor->track_views, op);
3014                 }
3015
3016                 if (!committed) {
3017                         _editor->commit_reversible_command ();
3018                 }
3019
3020         } else {
3021                 if (!getenv("ARDOUR_SAE")) {
3022                         _editor->selection->clear_tracks();
3023                 }
3024                 _editor->selection->clear_regions();
3025                 _editor->selection->clear_points ();
3026                 _editor->selection->clear_lines ();
3027         }
3028
3029         _editor->rubberband_rect->hide();
3030 }
3031
3032 void
3033 RubberbandSelectDrag::aborted ()
3034 {
3035         _editor->rubberband_rect->hide ();
3036 }
3037
3038 void
3039 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3040 {
3041         Drag::start_grab (event);
3042
3043         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3044 }
3045
3046 void
3047 TimeFXDrag::motion (GdkEvent* event, bool)
3048 {
3049         RegionView* rv = _primary;
3050
3051         nframes64_t const pf = adjusted_current_frame (event);
3052
3053         if (pf > rv->region()->position()) {
3054                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf);
3055         }
3056
3057         _editor->show_verbose_time_cursor (pf, 10);
3058 }
3059
3060 void
3061 TimeFXDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3062 {
3063         _primary->get_time_axis_view().hide_timestretch ();
3064
3065         if (!movement_occurred) {
3066                 return;
3067         }
3068
3069         if (last_pointer_frame() < _primary->region()->position()) {
3070                 /* backwards drag of the left edge - not usable */
3071                 return;
3072         }
3073
3074         nframes64_t newlen = last_pointer_frame() - _primary->region()->position();
3075
3076         float percentage = (double) newlen / (double) _primary->region()->length();
3077
3078 #ifndef USE_RUBBERBAND
3079         // Soundtouch uses percentage / 100 instead of normal (/ 1)
3080         if (_primary->region()->data_type() == DataType::AUDIO) {
3081                 percentage = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
3082         }
3083 #endif
3084
3085         _editor->begin_reversible_command (_("timestretch"));
3086
3087         // XXX how do timeFX on multiple regions ?
3088
3089         RegionSelection rs;
3090         rs.add (_primary);
3091
3092         if (!_editor->time_stretch (rs, percentage) == 0) {
3093                 error << _("An error occurred while executing time stretch operation") << endmsg;
3094         }
3095 }
3096
3097 void
3098 TimeFXDrag::aborted ()
3099 {
3100         _primary->get_time_axis_view().hide_timestretch ();
3101 }
3102
3103
3104 void
3105 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3106 {
3107         Drag::start_grab (event);
3108 }
3109
3110 void
3111 ScrubDrag::motion (GdkEvent* /*event*/, bool)
3112 {
3113         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
3114 }
3115
3116 void
3117 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3118 {
3119         if (movement_occurred && _editor->session()) {
3120                 /* make sure we stop */
3121                 _editor->session()->request_transport_speed (0.0);
3122         }
3123 }
3124
3125 void
3126 ScrubDrag::aborted ()
3127 {
3128         /* XXX: TODO */
3129 }
3130
3131 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3132         : Drag (e, i)
3133         , _operation (o)
3134         , _copy (false)
3135         , _original_pointer_time_axis (-1)
3136         , _last_pointer_time_axis (-1)
3137 {
3138
3139 }
3140
3141 void
3142 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
3143 {
3144         nframes64_t start = 0;
3145         nframes64_t end = 0;
3146
3147         if (_editor->session() == 0) {
3148                 return;
3149         }
3150
3151         Gdk::Cursor* cursor = 0;
3152
3153         switch (_operation) {
3154         case CreateSelection:
3155                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3156                         _copy = true;
3157                 } else {
3158                         _copy = false;
3159                 }
3160                 cursor = _editor->selector_cursor;
3161                 Drag::start_grab (event, cursor);
3162                 break;
3163
3164         case SelectionStartTrim:
3165                 if (_editor->clicked_axisview) {
3166                         _editor->clicked_axisview->order_selection_trims (_item, true);
3167                 }
3168                 Drag::start_grab (event, _editor->trimmer_cursor);
3169                 start = _editor->selection->time[_editor->clicked_selection].start;
3170                 _pointer_frame_offset = grab_frame() - start;
3171                 break;
3172
3173         case SelectionEndTrim:
3174                 if (_editor->clicked_axisview) {
3175                         _editor->clicked_axisview->order_selection_trims (_item, false);
3176                 }
3177                 Drag::start_grab (event, _editor->trimmer_cursor);
3178                 end = _editor->selection->time[_editor->clicked_selection].end;
3179                 _pointer_frame_offset = grab_frame() - end;
3180                 break;
3181
3182         case SelectionMove:
3183                 start = _editor->selection->time[_editor->clicked_selection].start;
3184                 Drag::start_grab (event, cursor);
3185                 _pointer_frame_offset = grab_frame() - start;
3186                 break;
3187         }
3188
3189         if (_operation == SelectionMove) {
3190                 _editor->show_verbose_time_cursor (start, 10);
3191         } else {
3192                 _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3193         }
3194
3195         _original_pointer_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ()).first->order ();
3196 }
3197
3198 void
3199 SelectionDrag::motion (GdkEvent* event, bool first_move)
3200 {
3201         nframes64_t start = 0;
3202         nframes64_t end = 0;
3203         nframes64_t length;
3204
3205         pair<TimeAxisView*, int> const pending_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ());
3206         if (pending_time_axis.first == 0) {
3207                 return;
3208         }
3209
3210         nframes64_t const pending_position = adjusted_current_frame (event);
3211
3212         /* only alter selection if things have changed */
3213
3214         if (pending_time_axis.first->order() == _last_pointer_time_axis && pending_position == last_pointer_frame()) {
3215                 return;
3216         }
3217
3218         switch (_operation) {
3219         case CreateSelection:
3220         {
3221                 nframes64_t grab = grab_frame ();
3222
3223                 if (first_move) {
3224                         _editor->snap_to (grab);
3225                 }
3226
3227                 if (pending_position < grab_frame()) {
3228                         start = pending_position;
3229                         end = grab;
3230                 } else {
3231                         end = pending_position;
3232                         start = grab;
3233                 }
3234
3235                 /* first drag: Either add to the selection
3236                    or create a new selection
3237                 */
3238
3239                 if (first_move) {
3240
3241                         if (_copy) {
3242                                 /* adding to the selection */
3243                                 _editor->selection->add (_editor->clicked_axisview);
3244                                 _editor->clicked_selection = _editor->selection->add (start, end);
3245                                 _copy = false;
3246                         } else {
3247                                 /* new selection */
3248
3249                                 if (!_editor->selection->selected (_editor->clicked_axisview)) {
3250                                         _editor->selection->set (_editor->clicked_axisview);
3251                                 }
3252
3253                                 _editor->clicked_selection = _editor->selection->set (start, end);
3254                         }
3255                 }
3256
3257                 /* select the track that we're in */
3258                 if (find (_added_time_axes.begin(), _added_time_axes.end(), pending_time_axis.first) == _added_time_axes.end()) {
3259                         _editor->selection->add (pending_time_axis.first);
3260                         _added_time_axes.push_back (pending_time_axis.first);
3261                 }
3262
3263                 /* deselect any tracks that this drag no longer includes, being careful to only deselect
3264                    tracks that we selected in the first place.
3265                 */
3266
3267                 int min_order = min (_original_pointer_time_axis, pending_time_axis.first->order());
3268                 int max_order = max (_original_pointer_time_axis, pending_time_axis.first->order());
3269
3270                 list<TimeAxisView*>::iterator i = _added_time_axes.begin();
3271                 while (i != _added_time_axes.end()) {
3272
3273                         list<TimeAxisView*>::iterator tmp = i;
3274                         ++tmp;
3275
3276                         if ((*i)->order() < min_order || (*i)->order() > max_order) {
3277                                 _editor->selection->remove (*i);
3278                                 _added_time_axes.remove (*i);
3279                         }
3280
3281                         i = tmp;
3282                 }
3283
3284         }
3285         break;
3286
3287         case SelectionStartTrim:
3288
3289                 start = _editor->selection->time[_editor->clicked_selection].start;
3290                 end = _editor->selection->time[_editor->clicked_selection].end;
3291
3292                 if (pending_position > end) {
3293                         start = end;
3294                 } else {
3295                         start = pending_position;
3296                 }
3297                 break;
3298
3299         case SelectionEndTrim:
3300
3301                 start = _editor->selection->time[_editor->clicked_selection].start;
3302                 end = _editor->selection->time[_editor->clicked_selection].end;
3303
3304                 if (pending_position < start) {
3305                         end = start;
3306                 } else {
3307                         end = pending_position;
3308                 }
3309
3310                 break;
3311
3312         case SelectionMove:
3313
3314                 start = _editor->selection->time[_editor->clicked_selection].start;
3315                 end = _editor->selection->time[_editor->clicked_selection].end;
3316
3317                 length = end - start;
3318
3319                 start = pending_position;
3320                 _editor->snap_to (start);
3321
3322                 end = start + length;
3323
3324                 break;
3325         }
3326
3327         if (event->button.x >= _editor->horizontal_adjustment.get_value() + _editor->_canvas_width) {
3328                 _editor->start_canvas_autoscroll (1, 0);
3329         }
3330
3331         if (start != end) {
3332                 _editor->selection->replace (_editor->clicked_selection, start, end);
3333         }
3334
3335         if (_operation == SelectionMove) {
3336                 _editor->show_verbose_time_cursor(start, 10);
3337         } else {
3338                 _editor->show_verbose_time_cursor(pending_position, 10);
3339         }
3340 }
3341
3342 void
3343 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
3344 {
3345         Session* s = _editor->session();
3346
3347         if (movement_occurred) {
3348                 motion (event, false);
3349                 /* XXX this is not object-oriented programming at all. ick */
3350                 if (_editor->selection->time.consolidate()) {
3351                         _editor->selection->TimeChanged ();
3352                 }
3353
3354                 /* XXX what if its a music time selection? */
3355                 if (s && (s->config.get_auto_play() || (s->get_play_range() && s->transport_rolling()))) {
3356                         s->request_play_range (&_editor->selection->time, true);
3357                 }
3358
3359
3360         } else {
3361                 /* just a click, no pointer movement.*/
3362
3363                 if (Keyboard::no_modifier_keys_pressed (&event->button)) {
3364                         _editor->selection->clear_time();
3365                 }
3366
3367                 if (!_editor->selection->selected (_editor->clicked_axisview)) {
3368                         _editor->selection->set (_editor->clicked_axisview);
3369                 }
3370
3371                 if (s && s->get_play_range () && s->transport_rolling()) {
3372                         s->request_stop (false, false);
3373                 }
3374
3375         }
3376
3377         _editor->stop_canvas_autoscroll ();
3378 }
3379
3380 void
3381 SelectionDrag::aborted ()
3382 {
3383         /* XXX: TODO */
3384 }
3385
3386 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3387         : Drag (e, i),
3388           _operation (o),
3389           _copy (false)
3390 {
3391         _drag_rect = new ArdourCanvas::SimpleRect (*_editor->time_line_group, 0.0, 0.0, 0.0, _editor->physical_screen_height);
3392         _drag_rect->hide ();
3393
3394         _drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3395         _drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3396 }
3397
3398 void
3399 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3400 {
3401         if (_editor->session() == 0) {
3402                 return;
3403         }
3404
3405         Gdk::Cursor* cursor = 0;
3406
3407         if (!_editor->temp_location) {
3408                 _editor->temp_location = new Location;
3409         }
3410
3411         switch (_operation) {
3412         case CreateRangeMarker:
3413         case CreateTransportMarker:
3414         case CreateCDMarker:
3415
3416                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3417                         _copy = true;
3418                 } else {
3419                         _copy = false;
3420                 }
3421                 cursor = _editor->selector_cursor;
3422                 break;
3423         }
3424
3425         Drag::start_grab (event, cursor);
3426
3427         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3428 }
3429
3430 void
3431 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
3432 {
3433         nframes64_t start = 0;
3434         nframes64_t end = 0;
3435         ArdourCanvas::SimpleRect *crect;
3436
3437         switch (_operation) {
3438         case CreateRangeMarker:
3439                 crect = _editor->range_bar_drag_rect;
3440                 break;
3441         case CreateTransportMarker:
3442                 crect = _editor->transport_bar_drag_rect;
3443                 break;
3444         case CreateCDMarker:
3445                 crect = _editor->cd_marker_bar_drag_rect;
3446                 break;
3447         default:
3448                 cerr << "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()" << endl;
3449                 return;
3450                 break;
3451         }
3452
3453         nframes64_t const pf = adjusted_current_frame (event);
3454
3455         if (_operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
3456                 nframes64_t grab = grab_frame ();
3457                 _editor->snap_to (grab);
3458
3459                 if (pf < grab_frame()) {
3460                         start = pf;
3461                         end = grab;
3462                 } else {
3463                         end = pf;
3464                         start = grab;
3465                 }
3466
3467                 /* first drag: Either add to the selection
3468                    or create a new selection.
3469                 */
3470
3471                 if (first_move) {
3472
3473                         _editor->temp_location->set (start, end);
3474
3475                         crect->show ();
3476
3477                         update_item (_editor->temp_location);
3478                         _drag_rect->show();
3479                         //_drag_rect->raise_to_top();
3480
3481                 }
3482         }
3483
3484         if (event->button.x >= _editor->horizontal_adjustment.get_value() + _editor->_canvas_width) {
3485                 _editor->start_canvas_autoscroll (1, 0);
3486         }
3487
3488         if (start != end) {
3489                 _editor->temp_location->set (start, end);
3490
3491                 double x1 = _editor->frame_to_pixel (start);
3492                 double x2 = _editor->frame_to_pixel (end);
3493                 crect->property_x1() = x1;
3494                 crect->property_x2() = x2;
3495
3496                 update_item (_editor->temp_location);
3497         }
3498
3499         _editor->show_verbose_time_cursor (pf, 10);
3500
3501 }
3502
3503 void
3504 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
3505 {
3506         Location * newloc = 0;
3507         string rangename;
3508         int flags;
3509
3510         if (movement_occurred) {
3511                 motion (event, false);
3512                 _drag_rect->hide();
3513
3514                 switch (_operation) {
3515                 case CreateRangeMarker:
3516                 case CreateCDMarker:
3517                     {
3518                         _editor->begin_reversible_command (_("new range marker"));
3519                         XMLNode &before = _editor->session()->locations()->get_state();
3520                         _editor->session()->locations()->next_available_name(rangename,"unnamed");
3521                         if (_operation == CreateCDMarker) {
3522                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
3523                                 _editor->cd_marker_bar_drag_rect->hide();
3524                         }
3525                         else {
3526                                 flags = Location::IsRangeMarker;
3527                                 _editor->range_bar_drag_rect->hide();
3528                         }
3529                         newloc = new Location(_editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags);
3530                         _editor->session()->locations()->add (newloc, true);
3531                         XMLNode &after = _editor->session()->locations()->get_state();
3532                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
3533                         _editor->commit_reversible_command ();
3534                         break;
3535                     }
3536
3537                 case CreateTransportMarker:
3538                         // popup menu to pick loop or punch
3539                         _editor->new_transport_marker_context_menu (&event->button, _item);
3540                         break;
3541                 }
3542         } else {
3543                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
3544
3545                 if (Keyboard::no_modifier_keys_pressed (&event->button) && _operation != CreateCDMarker) {
3546
3547                         nframes64_t start;
3548                         nframes64_t end;
3549
3550                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
3551
3552                         if (end == max_frames) {
3553                                 end = _editor->session()->current_end_frame ();
3554                         }
3555
3556                         if (start == max_frames) {
3557                                 start = _editor->session()->current_start_frame ();
3558                         }
3559
3560                         switch (_editor->mouse_mode) {
3561                         case MouseObject:
3562                                 /* find the two markers on either side and then make the selection from it */
3563                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set);
3564                                 break;
3565
3566                         case MouseRange:
3567                                 /* find the two markers on either side of the click and make the range out of it */
3568                                 _editor->selection->set (start, end);
3569                                 break;
3570
3571                         default:
3572                                 break;
3573                         }
3574                 }
3575         }
3576
3577         _editor->stop_canvas_autoscroll ();
3578 }
3579
3580 void
3581 RangeMarkerBarDrag::aborted ()
3582 {
3583         /* XXX: TODO */
3584 }
3585
3586 void
3587 RangeMarkerBarDrag::update_item (Location* location)
3588 {
3589         double const x1 = _editor->frame_to_pixel (location->start());
3590         double const x2 = _editor->frame_to_pixel (location->end());
3591
3592         _drag_rect->property_x1() = x1;
3593         _drag_rect->property_x2() = x2;
3594 }
3595
3596 void
3597 MouseZoomDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3598 {
3599         Drag::start_grab (event, _editor->zoom_cursor);
3600         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3601 }
3602
3603 void
3604 MouseZoomDrag::motion (GdkEvent* event, bool first_move)
3605 {
3606         nframes64_t start;
3607         nframes64_t end;
3608
3609         nframes64_t const pf = adjusted_current_frame (event);
3610
3611         nframes64_t grab = grab_frame ();
3612         _editor->snap_to_with_modifier (grab, event);
3613
3614         /* base start and end on initial click position */
3615         if (pf < grab) {
3616                 start = pf;
3617                 end = grab;
3618         } else {
3619                 end = pf;
3620                 start = grab;
3621         }
3622
3623         if (start != end) {
3624
3625                 if (first_move) {
3626                         _editor->zoom_rect->show();
3627                         _editor->zoom_rect->raise_to_top();
3628                 }
3629
3630                 _editor->reposition_zoom_rect(start, end);
3631
3632                 _editor->show_verbose_time_cursor (pf, 10);
3633         }
3634 }
3635
3636 void
3637 MouseZoomDrag::finished (GdkEvent* event, bool movement_occurred)
3638 {
3639         if (movement_occurred) {
3640                 motion (event, false);
3641
3642                 if (grab_frame() < last_pointer_frame()) {
3643                         _editor->temporal_zoom_by_frame (grab_frame(), last_pointer_frame(), "mouse zoom");
3644                 } else {
3645                         _editor->temporal_zoom_by_frame (last_pointer_frame(), grab_frame(), "mouse zoom");
3646                 }
3647         } else {
3648                 _editor->temporal_zoom_to_frame (false, grab_frame());
3649                 /*
3650                 temporal_zoom_step (false);
3651                 center_screen (grab_frame());
3652                 */
3653         }
3654
3655         _editor->zoom_rect->hide();
3656 }
3657
3658 void
3659 MouseZoomDrag::aborted ()
3660 {
3661         _editor->zoom_rect->hide ();
3662 }
3663
3664 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
3665         : Drag (e, i)
3666 {
3667         CanvasNoteEvent*     cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3668         region = &cnote->region_view();
3669 }
3670
3671 void
3672 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3673 {
3674         Drag::start_grab (event);
3675
3676         drag_delta_x = 0;
3677         drag_delta_note = 0;
3678
3679         double event_x;
3680         double event_y;
3681
3682         event_x = _drags->current_pointer_x();
3683         event_y = _drags->current_pointer_y();
3684
3685         _item->property_parent().get_value()->w2i(event_x, event_y);
3686
3687         last_x = region->snap_to_pixel(event_x);
3688         last_y = event_y;
3689
3690         CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3691
3692         if (!(was_selected = cnote->selected())) {
3693
3694                 /* tertiary-click means extend selection - we'll do that on button release,
3695                    so don't add it here, because otherwise we make it hard to figure
3696                    out the "extend-to" range.
3697                 */
3698
3699                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
3700
3701                 if (!extend) {
3702                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
3703
3704                         if (add) {
3705                                 region->note_selected (cnote, true);
3706                         } else {
3707                                 region->unique_select (cnote);
3708                         }
3709                 }
3710         }
3711 }
3712
3713 void
3714 NoteDrag::motion (GdkEvent*, bool)
3715 {
3716         MidiStreamView* streamview = region->midi_stream_view();
3717         double event_x;
3718         double event_y;
3719
3720         event_x = _drags->current_pointer_x();
3721         event_y = _drags->current_pointer_y();
3722
3723         _item->property_parent().get_value()->w2i(event_x, event_y);
3724
3725         event_x = region->snap_to_pixel(event_x);
3726
3727         double dx     = event_x - last_x;
3728         double dy     = event_y - last_y;
3729         last_x = event_x;
3730
3731         drag_delta_x += dx;
3732
3733         // Snap to note rows
3734
3735         if (abs (dy) < streamview->note_height()) {
3736                 dy = 0.0;
3737         } else {
3738                 int8_t this_delta_note;
3739                 if (dy > 0) {
3740                         this_delta_note = (int8_t)ceil(dy / streamview->note_height() / 2.0);
3741                 } else {
3742                         this_delta_note = (int8_t)floor(dy / streamview->note_height() / 2.0);
3743                 }
3744                 drag_delta_note -= this_delta_note;
3745                 dy = streamview->note_height() * this_delta_note;
3746                 last_y = last_y + dy;
3747         }
3748
3749         if (dx || dy) {
3750                 region->move_selection (dx, dy);
3751
3752                 CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3753                 char buf[4];
3754                 snprintf (buf, sizeof (buf), "%g", (int) cnote->note()->note() + drag_delta_note);
3755                 //editor.show_verbose_canvas_cursor_with (Evoral::midi_note_name (ev->note()->note()));
3756                 _editor->show_verbose_canvas_cursor_with (buf);
3757         }
3758 }
3759
3760 void
3761 NoteDrag::finished (GdkEvent* ev, bool moved)
3762 {
3763         ArdourCanvas::CanvasNote* cnote = dynamic_cast<ArdourCanvas::CanvasNote*>(_item);
3764
3765         if (!moved) {
3766                 if (_editor->current_mouse_mode() == Editing::MouseObject) {
3767
3768                         if (was_selected) {
3769                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3770                                 if (add) {
3771                                         region->note_deselected (cnote);
3772                                 }
3773                         } else {
3774                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
3775                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3776
3777                                 if (!extend && !add && region->selection_size() > 1) {
3778                                         region->unique_select(cnote);
3779                                 } else if (extend) {
3780                                         region->note_selected (cnote, true, true);
3781                                 } else {
3782                                         /* it was added during button press */
3783                                 }
3784                         }
3785                 }
3786         } else {
3787                 region->note_dropped (cnote, drag_delta_x, drag_delta_note);
3788         }
3789 }
3790
3791 void
3792 NoteDrag::aborted ()
3793 {
3794         /* XXX: TODO */
3795 }
3796
3797 AutomationRangeDrag::AutomationRangeDrag (Editor* e, ArdourCanvas::Item* i, list<AudioRange> const & r)
3798         : Drag (e, i)
3799         , _ranges (r)
3800         , _nothing_to_drag (false)
3801 {
3802         _atav = reinterpret_cast<AutomationTimeAxisView*> (_item->get_data ("trackview"));
3803         assert (_atav);
3804
3805         _line = _atav->line ();
3806 }
3807
3808 void
3809 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3810 {
3811         Drag::start_grab (event, cursor);
3812
3813         list<ControlPoint*> points;
3814
3815         XMLNode* state = &_line->get_state ();
3816
3817         if (_ranges.empty()) {
3818
3819                 uint32_t const N = _line->npoints ();
3820                 for (uint32_t i = 0; i < N; ++i) {
3821                         points.push_back (_line->nth (i));
3822                 }
3823
3824         } else {
3825
3826                 boost::shared_ptr<AutomationList> the_list = _line->the_list ();
3827                 for (list<AudioRange>::const_iterator j = _ranges.begin(); j != _ranges.end(); ++j) {
3828
3829                         /* fade into and out of the region that we're dragging;
3830                            64 samples length plucked out of thin air.
3831                         */
3832                         nframes64_t const h = (j->start + j->end) / 2;
3833                         nframes64_t a = j->start + 64;
3834                         if (a > h) {
3835                                 a = h;
3836                         }
3837                         nframes64_t b = j->end - 64;
3838                         if (b < h) {
3839                                 b = h;
3840                         }
3841
3842                         the_list->add (j->start, the_list->eval (j->start));
3843                         _line->add_always_in_view (j->start);
3844                         the_list->add (a, the_list->eval (a));
3845                         _line->add_always_in_view (a);
3846                         the_list->add (b, the_list->eval (b));
3847                         _line->add_always_in_view (b);
3848                         the_list->add (j->end, the_list->eval (j->end));
3849                         _line->add_always_in_view (j->end);
3850                 }
3851
3852                 uint32_t const N = _line->npoints ();
3853                 for (uint32_t i = 0; i < N; ++i) {
3854
3855                         ControlPoint* p = _line->nth (i);
3856
3857                         list<AudioRange>::const_iterator j = _ranges.begin ();
3858                         while (j != _ranges.end() && (j->start >= (*p->model())->when || j->end <= (*p->model())->when)) {
3859                                 ++j;
3860                         }
3861
3862                         if (j != _ranges.end()) {
3863                                 points.push_back (p);
3864                         }
3865                 }
3866         }
3867
3868         if (points.empty()) {
3869                 _nothing_to_drag = true;
3870                 return;
3871         }
3872
3873         _line->start_drag_multiple (points, 1 - (_drags->current_pointer_y() / _line->height ()), state);
3874 }
3875
3876 void
3877 AutomationRangeDrag::motion (GdkEvent* event, bool first_move)
3878 {
3879         if (_nothing_to_drag) {
3880                 return;
3881         }
3882
3883         float const f = 1 - (_drags->current_pointer_y() / _line->height());
3884
3885         /* we are ignoring x position for this drag, so we can just pass in anything */
3886         _line->drag_motion (0, f, true, false);
3887 }
3888
3889 void
3890 AutomationRangeDrag::finished (GdkEvent* event, bool)
3891 {
3892         if (_nothing_to_drag) {
3893                 return;
3894         }
3895
3896         motion (event, false);
3897         _line->end_drag ();
3898         _line->clear_always_in_view ();
3899 }
3900
3901 void
3902 AutomationRangeDrag::aborted ()
3903 {
3904         _line->clear_always_in_view ();
3905         _line->reset ();
3906 }