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/session.h"
  26 #include "ardour/dB.h"
  27 #include "ardour/region_factory.h"
  28 #include "editor.h"
  29 #include "i18n.h"
  30 #include "keyboard.h"
  31 #include "audio_region_view.h"
  32 #include "midi_region_view.h"
  33 #include "ardour_ui.h"
  34 #include "gui_thread.h"
  35 #include "control_point.h"
  36 #include "utils.h"
  37 #include "region_gain_line.h"
  38 #include "editor_drag.h"
  39 #include "audio_time_axis.h"
  40 #include "midi_time_axis.h"
  41 #include "canvas-note.h"
  42 #include "selection.h"
  43 #include "midi_selection.h"
  44 #include "automation_time_axis.h"
  45
  46 using namespace std;
  47 using namespace ARDOUR;
  48 using namespace PBD;
  49 using namespace Gtk;
  50 using namespace Editing;
  51 using namespace ArdourCanvas;
  52
  53 using Gtkmm2ext::Keyboard;
  54
  55 double const ControlPointDrag::_zero_gain_fraction = gain_to_slider_position (dB_to_coefficient (0.0));
  56
  57 DragManager::DragManager (Editor* e)
  58         : _editor (e)
  59         , _ending (false)
  60         , _current_pointer_frame (0)
  61 {
  62
  63 }
  64
  65 DragManager::~DragManager ()
  66 {
  67         abort ();
  68 }
  69
  70 /** Call abort for each active drag */
  71 void
  72 DragManager::abort ()
  73 {
  74         _ending = true;
  75
  76         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
  77                 (*i)->abort ();
  78                 delete *i;
  79         }
  80
  81         _drags.clear ();
  82
  83         _ending = false;
  84 }
  85
  86 void
  87 DragManager::add (Drag* d)
  88 {
  89         d->set_manager (this);
  90         _drags.push_back (d);
  91 }
  92
  93 void
  94 DragManager::set (Drag* d, GdkEvent* e, Gdk::Cursor* c)
  95 {
  96         assert (_drags.empty ());
  97         d->set_manager (this);
  98         _drags.push_back (d);
  99         start_grab (e);
 100 }
 101
 102 void
 103 DragManager::start_grab (GdkEvent* e)
 104 {
 105         _current_pointer_frame = _editor->event_frame (e, &_current_pointer_x, &_current_pointer_y);
 106
 107         for (list<Drag*>::const_iterator i = _drags.begin(); i != _drags.end(); ++i) {
 108                 (*i)->start_grab (e);
 109         }
 110 }
 111
 112 /** Call end_grab for each active drag.
 113  *  @return true if any drag reported movement having occurred.
 114  */
 115 bool
 116 DragManager::end_grab (GdkEvent* e)
 117 {
 118         _ending = true;
 119
 120         bool r = false;
 121         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 122                 bool const t = (*i)->end_grab (e);
 123                 if (t) {
 124                         r = true;
 125                 }
 126                 delete *i;
 127         }
 128
 129         _drags.clear ();
 130
 131         _ending = false;
 132
 133         return r;
 134 }
 135
 136 bool
 137 DragManager::motion_handler (GdkEvent* e, bool from_autoscroll)
 138 {
 139         bool r = false;
 140
 141         _current_pointer_frame = _editor->event_frame (e, &_current_pointer_x, &_current_pointer_y);
 142
 143         for (list<Drag*>::iterator i = _drags.begin(); i != _drags.end(); ++i) {
 144                 bool const t = (*i)->motion_handler (e, from_autoscroll);
 145                 if (t) {
 146                         r = true;
 147                 }
 148
 149         }
 150
 151         return r;
 152 }
 153
 154 bool
 155 DragManager::have_item (ArdourCanvas::Item* i) const
 156 {
 157         list<Drag*>::const_iterator j = _drags.begin ();
 158         while (j != _drags.end() && (*j)->item () != i) {
 159                 ++j;
 160         }
 161
 162         return j != _drags.end ();
 163 }
 164
 165 Drag::Drag (Editor* e, ArdourCanvas::Item* i)
 166         : _editor (e)
 167         , _item (i)
 168         , _pointer_frame_offset (0)
 169         , _move_threshold_passed (false)
 170         , _grab_frame (0)
 171         , _last_pointer_frame (0)
 172 {
 173
 174 }
 175
 176 void
 177 Drag::swap_grab (ArdourCanvas::Item* new_item, Gdk::Cursor* cursor, uint32_t time)
 178 {
 179         _item->ungrab (0);
 180         _item = new_item;
 181
 182         if (cursor == 0) {
 183                 cursor = _editor->which_grabber_cursor ();
 184         }
 185
 186         _item->grab (Gdk::POINTER_MOTION_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK, *cursor, time);
 187 }
 188
 189 void
 190 Drag::start_grab (GdkEvent* event, Gdk::Cursor *cursor)
 191 {
 192         if (cursor == 0) {
 193                 cursor = _editor->which_grabber_cursor ();
 194         }
 195
 196         // if dragging with button2, the motion is x constrained, with Alt-button2 it is y constrained
 197
 198         if (Keyboard::is_button2_event (&event->button)) {
 199                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::SecondaryModifier)) {
 200                         _y_constrained = true;
 201                         _x_constrained = false;
 202                 } else {
 203                         _y_constrained = false;
 204                         _x_constrained = true;
 205                 }
 206         } else {
 207                 _x_constrained = false;
 208                 _y_constrained = false;
 209         }
 210
 211         _grab_frame = _editor->event_frame (event, &_grab_x, &_grab_y);
 212         _grab_frame = adjusted_frame (_grab_frame, event);
 213         _last_pointer_frame = _grab_frame;
 214         _last_pointer_x = _grab_x;
 215         _last_pointer_y = _grab_y;
 216
 217         _item->grab (Gdk::POINTER_MOTION_MASK|Gdk::BUTTON_PRESS_MASK|Gdk::BUTTON_RELEASE_MASK,
 218                      *cursor,
 219                      event->button.time);
 220
 221         if (_editor->session() && _editor->session()->transport_rolling()) {
 222                 _was_rolling = true;
 223         } else {
 224                 _was_rolling = false;
 225         }
 226
 227         switch (_editor->snap_type()) {
 228         case SnapToRegionStart:
 229         case SnapToRegionEnd:
 230         case SnapToRegionSync:
 231         case SnapToRegionBoundary:
 232                 _editor->build_region_boundary_cache ();
 233                 break;
 234         default:
 235                 break;
 236         }
 237 }
 238
 239 /** Call to end a drag `successfully'.  Ungrabs item and calls
 240  *  subclass' finished() method.
 241  *
 242  *  @param event GDK event, or 0.
 243  *  @return true if some movement occurred, otherwise false.
 244  */
 245 bool
 246 Drag::end_grab (GdkEvent* event)
 247 {
 248         _editor->stop_canvas_autoscroll ();
 249
 250         _item->ungrab (event ? event->button.time : 0);
 251
 252         finished (event, _move_threshold_passed);
 253
 254         _editor->hide_verbose_canvas_cursor();
 255
 256         return _move_threshold_passed;
 257 }
 258
 259 nframes64_t
 260 Drag::adjusted_frame (nframes64_t f, GdkEvent const * event, bool snap) const
 261 {
 262         nframes64_t pos = 0;
 263
 264         if (f > _pointer_frame_offset) {
 265                 pos = f - _pointer_frame_offset;
 266         }
 267
 268         if (snap) {
 269                 _editor->snap_to_with_modifier (pos, event);
 270         }
 271
 272         return pos;
 273 }
 274
 275 nframes64_t
 276 Drag::adjusted_current_frame (GdkEvent const * event, bool snap) const
 277 {
 278         return adjusted_frame (_drags->current_pointer_frame (), event, snap);
 279 }
 280
 281 bool
 282 Drag::motion_handler (GdkEvent* event, bool from_autoscroll)
 283 {
 284         /* check to see if we have moved in any way that matters since the last motion event */
 285         if ( (!x_movement_matters() || _last_pointer_frame == adjusted_current_frame (event)) &&
 286              (!y_movement_matters() || _last_pointer_y == _drags->current_pointer_y ()) ) {
 287                 return false;
 288         }
 289
 290         pair<nframes64_t, int> const threshold = move_threshold ();
 291
 292         bool const old_move_threshold_passed = _move_threshold_passed;
 293
 294         if (!from_autoscroll && !_move_threshold_passed) {
 295
 296                 bool const xp = (::llabs (adjusted_current_frame (event) - _grab_frame) >= threshold.first);
 297                 bool const yp = (::fabs ((_drags->current_pointer_y () - _grab_y)) >= threshold.second);
 298
 299                 _move_threshold_passed = ((xp && x_movement_matters()) || (yp && y_movement_matters()));
 300         }
 301
 302         if (active (_editor->mouse_mode) && _move_threshold_passed) {
 303
 304                 if (event->motion.state & Gdk::BUTTON1_MASK || event->motion.state & Gdk::BUTTON2_MASK) {
 305                         if (!from_autoscroll) {
 306                                 _editor->maybe_autoscroll (true, allow_vertical_autoscroll ());
 307                         }
 308
 309                         motion (event, _move_threshold_passed != old_move_threshold_passed);
 310
 311                         _last_pointer_x = _drags->current_pointer_x ();
 312                         _last_pointer_y = _drags->current_pointer_y ();
 313                         _last_pointer_frame = adjusted_current_frame (event);
 314
 315                         return true;
 316                 }
 317         }
 318         return false;
 319 }
 320
 321 /** Call to abort a drag.  Ungrabs item and calls subclass's aborted () */
 322 void
 323 Drag::abort ()
 324 {
 325         if (_item) {
 326                 _item->ungrab (0);
 327         }
 328
 329         aborted ();
 330
 331         _editor->stop_canvas_autoscroll ();
 332         _editor->hide_verbose_canvas_cursor ();
 333 }
 334
 335 RegionDrag::RegionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
 336         : Drag (e, i),
 337           _primary (p)
 338 {
 339         for (list<RegionView*>::const_iterator i = v.begin(); i != v.end(); ++i) {
 340                 _views.push_back (DraggingView (*i));
 341         }
 342
 343         RegionView::RegionViewGoingAway.connect (death_connection, invalidator (*this), ui_bind (&RegionDrag::region_going_away, this, _1), gui_context());
 344 }
 345
 346 void
 347 RegionDrag::region_going_away (RegionView* v)
 348 {
 349         list<DraggingView>::iterator i = _views.begin ();
 350         while (i != _views.end() && i->view != v) {
 351                 ++i;
 352         }
 353
 354         if (i != _views.end()) {
 355                 _views.erase (i);
 356         }
 357 }
 358
 359 RegionMotionDrag::RegionMotionDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b)
 360         : RegionDrag (e, i, p, v),
 361           _dest_trackview (0),
 362           _dest_layer (0),
 363           _brushing (b),
 364           _total_x_delta (0)
 365 {
 366
 367 }
 368
 369
 370 void
 371 RegionMotionDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
 372 {
 373         Drag::start_grab (event);
 374
 375         _editor->show_verbose_time_cursor (_last_frame_position, 10);
 376 }
 377
 378 RegionMotionDrag::TimeAxisViewSummary
 379 RegionMotionDrag::get_time_axis_view_summary ()
 380 {
 381         int32_t children = 0;
 382         TimeAxisViewSummary sum;
 383
 384         _editor->visible_order_range (&sum.visible_y_low, &sum.visible_y_high);
 385
 386         /* get a bitmask representing the visible tracks */
 387
 388         for (TrackViewList::iterator i = _editor->track_views.begin(); i != _editor->track_views.end(); ++i) {
 389                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (*i);
 390                 TimeAxisView::Children children_list;
 391
 392                 /* zeroes are audio/MIDI tracks. ones are other types. */
 393
 394                 if (!rtv->hidden()) {
 395
 396                         if (!rtv->is_track()) {
 397                                 /* not an audio nor MIDI track */
 398                                 sum.tracks = sum.tracks |= (0x01 << rtv->order());
 399                         }
 400
 401                         sum.height_list[rtv->order()] = (*i)->current_height();
 402                         children = 1;
 403
 404                         if ((children_list = rtv->get_child_list()).size() > 0) {
 405                                 for (TimeAxisView::Children::iterator j = children_list.begin(); j != children_list.end(); ++j) {
 406                                         sum.tracks = sum.tracks |= (0x01 << (rtv->order() + children));
 407                                         sum.height_list[rtv->order() + children] = (*j)->current_height();
 408                                         children++;
 409                                 }
 410                         }
 411                 }
 412         }
 413
 414         return sum;
 415 }
 416
 417 bool
 418 RegionMotionDrag::compute_y_delta (
 419         TimeAxisView const * last_pointer_view, TimeAxisView* current_pointer_view,
 420         int32_t last_pointer_layer, int32_t current_pointer_layer,
 421         TimeAxisViewSummary const & tavs,
 422         int32_t* pointer_order_span, int32_t* pointer_layer_span,
 423         int32_t* canvas_pointer_order_span
 424         )
 425 {
 426         if (_brushing) {
 427                 *pointer_order_span = 0;
 428                 *pointer_layer_span = 0;
 429                 return true;
 430         }
 431
 432         bool clamp_y_axis = false;
 433
 434         /* the change in track order between this callback and the last */
 435         *pointer_order_span = last_pointer_view->order() - current_pointer_view->order();
 436         /* the change in layer between this callback and the last;
 437            only meaningful if pointer_order_span == 0 (ie we've not moved tracks) */
 438         *pointer_layer_span = last_pointer_layer - current_pointer_layer;
 439
 440         if (*pointer_order_span != 0) {
 441
 442                 /* find the actual pointer span, in terms of the number of visible tracks;
 443                    to do this, we reduce |pointer_order_span| by the number of hidden tracks
 444                    over the span */
 445
 446                 *canvas_pointer_order_span = *pointer_order_span;
 447                 if (last_pointer_view->order() >= current_pointer_view->order()) {
 448                         for (int32_t y = current_pointer_view->order(); y < last_pointer_view->order(); y++) {
 449                                 if (tavs.height_list[y] == 0) {
 450                                         *canvas_pointer_order_span--;
 451                                 }
 452                         }
 453                 } else {
 454                         for (int32_t y = last_pointer_view->order(); y <= current_pointer_view->order(); y++) {
 455                                 if (tavs.height_list[y] == 0) {
 456                                         *canvas_pointer_order_span++;
 457                                 }
 458                         }
 459                 }
 460
 461                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 462
 463                         RegionView* rv = i->view;
 464
 465                         if (rv->region()->locked()) {
 466                                 continue;
 467                         }
 468
 469                         double ix1, ix2, iy1, iy2;
 470                         rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
 471                         rv->get_canvas_frame()->i2w (ix1, iy1);
 472                         iy1 += _editor->vertical_adjustment.get_value() - _editor->canvas_timebars_vsize;
 473
 474                         /* get the new trackview for this particular region */
 475                         pair<TimeAxisView*, int> const tvp = _editor->trackview_by_y_position (iy1);
 476                         assert (tvp.first);
 477                         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tvp.first);
 478
 479                         /* XXX: not sure that we should be passing canvas_pointer_order_span in here,
 480                            as surely this is a per-region thing... */
 481
 482                         clamp_y_axis = y_movement_disallowed (
 483                                 rtv->order(), last_pointer_view->order(), *canvas_pointer_order_span, tavs
 484                                 );
 485
 486                         if (clamp_y_axis) {
 487                                 break;
 488                         }
 489                 }
 490
 491         } else if (_dest_trackview == current_pointer_view) {
 492
 493                 if (current_pointer_layer == last_pointer_layer) {
 494                         /* No movement; clamp */
 495                         clamp_y_axis = true;
 496                 }
 497         }
 498
 499         if (!clamp_y_axis) {
 500                 _dest_trackview = current_pointer_view;
 501                 _dest_layer = current_pointer_layer;
 502         }
 503
 504         return clamp_y_axis;
 505 }
 506
 507
 508 double
 509 RegionMotionDrag::compute_x_delta (GdkEvent const * event, nframes64_t* pending_region_position)
 510 {
 511         /* compute the amount of pointer motion in frames, and where
 512            the region would be if we moved it by that much.
 513         */
 514         *pending_region_position = adjusted_current_frame (event);
 515
 516         nframes64_t sync_frame;
 517         nframes64_t sync_offset;
 518         int32_t sync_dir;
 519
 520         sync_offset = _primary->region()->sync_offset (sync_dir);
 521
 522         /* we don't handle a sync point that lies before zero.
 523          */
 524         if (sync_dir >= 0 || (sync_dir < 0 && *pending_region_position >= sync_offset)) {
 525
 526                 sync_frame = *pending_region_position + (sync_dir*sync_offset);
 527
 528                 _editor->snap_to_with_modifier (sync_frame, event);
 529
 530                 *pending_region_position = _primary->region()->adjust_to_sync (sync_frame);
 531
 532         } else {
 533                 *pending_region_position = _last_frame_position;
 534         }
 535
 536         if (*pending_region_position > max_frames - _primary->region()->length()) {
 537                 *pending_region_position = _last_frame_position;
 538         }
 539
 540         double x_delta = 0;
 541
 542         if ((*pending_region_position != _last_frame_position) && x_move_allowed ()) {
 543
 544                 /* now compute the canvas unit distance we need to move the regionview
 545                    to make it appear at the new location.
 546                 */
 547
 548                 x_delta = (static_cast<double> (*pending_region_position) - _last_frame_position) / _editor->frames_per_unit;
 549
 550                 if (*pending_region_position <= _last_frame_position) {
 551
 552                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 553
 554                                 RegionView* rv = i->view;
 555
 556                                 // If any regionview is at zero, we need to know so we can stop further leftward motion.
 557
 558                                 double ix1, ix2, iy1, iy2;
 559                                 rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
 560                                 rv->get_canvas_frame()->i2w (ix1, iy1);
 561
 562                                 if (-x_delta > ix1 + _editor->horizontal_position()) {
 563                                         x_delta = 0;
 564                                         *pending_region_position = _last_frame_position;
 565                                         break;
 566                                 }
 567                         }
 568
 569                 }
 570
 571                 _last_frame_position = *pending_region_position;
 572         }
 573
 574         return x_delta;
 575 }
 576
 577 void
 578 RegionMotionDrag::motion (GdkEvent* event, bool first_move)
 579 {
 580         double y_delta = 0;
 581
 582         TimeAxisViewSummary tavs = get_time_axis_view_summary ();
 583
 584         vector<int32_t>::iterator j;
 585
 586         /* *pointer* variables reflect things about the pointer; as we may be moving
 587            multiple regions, much detail must be computed per-region */
 588
 589         /* current_pointer_view will become the TimeAxisView that we're currently pointing at, and
 590            current_pointer_layer the current layer on that TimeAxisView; in this code layer numbers
 591            are with respect to how the view's layers are displayed; if we are in Overlaid mode, layer
 592            is always 0 regardless of what the region's "real" layer is */
 593         RouteTimeAxisView* current_pointer_view;
 594         layer_t current_pointer_layer;
 595         if (!check_possible (&current_pointer_view, &current_pointer_layer)) {
 596                 return;
 597         }
 598
 599         /* TimeAxisView that we were pointing at last time we entered this method */
 600         TimeAxisView const * const last_pointer_view = _dest_trackview;
 601         /* the order of the track that we were pointing at last time we entered this method */
 602         int32_t const last_pointer_order = last_pointer_view->order ();
 603         /* the layer that we were pointing at last time we entered this method */
 604         layer_t const last_pointer_layer = _dest_layer;
 605
 606         int32_t pointer_order_span;
 607         int32_t pointer_layer_span;
 608         int32_t canvas_pointer_order_span;
 609
 610         bool const clamp_y_axis = compute_y_delta (
 611                 last_pointer_view, current_pointer_view,
 612                 last_pointer_layer, current_pointer_layer, tavs,
 613                 &pointer_order_span, &pointer_layer_span,
 614                 &canvas_pointer_order_span
 615                 );
 616
 617         nframes64_t pending_region_position;
 618         double const x_delta = compute_x_delta (event, &pending_region_position);
 619
 620         /*************************************************************
 621             PREPARE TO MOVE
 622         ************************************************************/
 623
 624         if (x_delta == 0 && pointer_order_span == 0 && pointer_layer_span == 0 && !first_move) {
 625                 /* haven't reached next snap point, and we're not switching
 626                    trackviews nor layers. nothing to do.
 627                 */
 628                 return;
 629         }
 630
 631         /*************************************************************
 632             MOTION
 633         ************************************************************/
 634
 635         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
 636
 637         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 638
 639                 RegionView* rv = i->view;
 640
 641                 if (rv->region()->locked()) {
 642                         continue;
 643                 }
 644
 645                 /* here we are calculating the y distance from the
 646                    top of the first track view to the top of the region
 647                    area of the track view that we're working on */
 648
 649                 /* this x value is just a dummy value so that we have something
 650                    to pass to i2w () */
 651
 652                 double ix1 = 0;
 653
 654                 /* distance from the top of this track view to the region area
 655                    of our track view is always 1 */
 656
 657                 double iy1 = 1;
 658
 659                 /* convert to world coordinates, ie distance from the top of
 660                    the ruler section */
 661
 662                 rv->get_canvas_frame()->i2w (ix1, iy1);
 663
 664                 /* compensate for the ruler section and the vertical scrollbar position */
 665                 iy1 += _editor->get_trackview_group_vertical_offset ();
 666
 667                 if (first_move) {
 668
 669                         // hide any dependent views
 670
 671                         rv->get_time_axis_view().hide_dependent_views (*rv);
 672
 673                         /*
 674                            reparent to a non scrolling group so that we can keep the
 675                            region selection above all time axis views.
 676                            reparenting means we have to move the rv as the two
 677                            parent groups have different coordinates.
 678                         */
 679
 680                         rv->get_canvas_group()->property_y() = iy1 - 1;
 681                         rv->get_canvas_group()->reparent(*(_editor->_region_motion_group));
 682
 683                         rv->fake_set_opaque (true);
 684                 }
 685
 686                 /* current view for this particular region */
 687                 pair<TimeAxisView*, int> pos = _editor->trackview_by_y_position (iy1);
 688                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (pos.first);
 689
 690                 if (pointer_order_span != 0 && !clamp_y_axis) {
 691
 692                         /* INTER-TRACK MOVEMENT */
 693
 694                         /* move through the height list to the track that the region is currently on */
 695                         vector<int32_t>::iterator j = tavs.height_list.begin ();
 696                         int32_t x = 0;
 697                         while (j != tavs.height_list.end () && x != rtv->order ()) {
 698                                 ++x;
 699                                 ++j;
 700                         }
 701
 702                         y_delta = 0;
 703                         int32_t temp_pointer_order_span = canvas_pointer_order_span;
 704
 705                         if (j != tavs.height_list.end ()) {
 706
 707                                 /* Account for layers in the original and
 708                                    destination tracks.  If we're moving around in layers we assume
 709                                    that only one track is involved, so it's ok to use *pointer*
 710                                    variables here. */
 711
 712                                 StreamView* lv = last_pointer_view->view ();
 713                                 assert (lv);
 714
 715                                 /* move to the top of the last trackview */
 716                                 if (lv->layer_display () == Stacked) {
 717                                         y_delta -= (lv->layers() - last_pointer_layer - 1) * lv->child_height ();
 718                                 }
 719
 720                                 StreamView* cv = current_pointer_view->view ();
 721                                 assert (cv);
 722
 723                                 /* move to the right layer on the current trackview */
 724                                 if (cv->layer_display () == Stacked) {
 725                                         y_delta += (cv->layers() - current_pointer_layer - 1) * cv->child_height ();
 726                                 }
 727
 728                                 /* And for being on a non-topmost layer on the new
 729                                    track */
 730
 731                                 while (temp_pointer_order_span > 0) {
 732                                         /* we're moving up canvas-wise,
 733                                            so we need to find the next track height
 734                                         */
 735                                         if (j != tavs.height_list.begin()) {
 736                                                 j--;
 737                                         }
 738
 739                                         if (x != last_pointer_order) {
 740                                                 if ((*j) == 0) {
 741                                                         ++temp_pointer_order_span;
 742                                                 }
 743                                         }
 744
 745                                         y_delta -= (*j);
 746                                         temp_pointer_order_span--;
 747                                 }
 748
 749                                 while (temp_pointer_order_span < 0) {
 750
 751                                         y_delta += (*j);
 752
 753                                         if (x != last_pointer_order) {
 754                                                 if ((*j) == 0) {
 755                                                         --temp_pointer_order_span;
 756                                                 }
 757                                         }
 758
 759                                         if (j != tavs.height_list.end()) {
 760                                                 j++;
 761                                         }
 762
 763                                         temp_pointer_order_span++;
 764                                 }
 765
 766
 767                                 /* find out where we'll be when we move and set height accordingly */
 768
 769                                 pair<TimeAxisView*, int> const pos = _editor->trackview_by_y_position (iy1 + y_delta);
 770                                 RouteTimeAxisView const * temp_rtv = dynamic_cast<RouteTimeAxisView*> (pos.first);
 771                                 rv->set_height (temp_rtv->view()->child_height());
 772
 773                                 /* if you un-comment the following, the region colours will follow
 774                                    the track colours whilst dragging; personally
 775                                    i think this can confuse things, but never mind.
 776                                 */
 777
 778                                 //const GdkColor& col (temp_rtv->view->get_region_color());
 779                                 //rv->set_color (const_cast<GdkColor&>(col));
 780                         }
 781                 }
 782
 783                 if (pointer_order_span == 0 && pointer_layer_span != 0 && !clamp_y_axis) {
 784
 785                         /* INTER-LAYER MOVEMENT in the same track */
 786                         y_delta = rtv->view()->child_height () * pointer_layer_span;
 787                 }
 788
 789
 790                 if (_brushing) {
 791                         _editor->mouse_brush_insert_region (rv, pending_region_position);
 792                 } else {
 793                         rv->move (x_delta, y_delta);
 794                 }
 795
 796         } /* foreach region */
 797
 798         _total_x_delta += x_delta;
 799
 800         if (first_move) {
 801                 _editor->cursor_group->raise_to_top();
 802         }
 803
 804         if (x_delta != 0 && !_brushing) {
 805                 _editor->show_verbose_time_cursor (_last_frame_position, 10);
 806         }
 807 }
 808
 809 void
 810 RegionMoveDrag::motion (GdkEvent* event, bool first_move)
 811 {
 812         if (_copy && first_move) {
 813                 copy_regions (event);
 814         }
 815
 816         RegionMotionDrag::motion (event, first_move);
 817 }
 818
 819 void
 820 RegionMoveDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
 821 {
 822         vector<RegionView*> copies;
 823         boost::shared_ptr<Track> tr;
 824         boost::shared_ptr<Playlist> from_playlist;
 825         boost::shared_ptr<Playlist> to_playlist;
 826         RegionSelection new_views;
 827         typedef set<boost::shared_ptr<Playlist> > PlaylistSet;
 828         PlaylistSet modified_playlists;
 829         PlaylistSet frozen_playlists;
 830         list <sigc::connection> modified_playlist_connections;
 831         pair<PlaylistSet::iterator,bool> insert_result, frozen_insert_result;
 832         nframes64_t drag_delta;
 833         bool changed_tracks, changed_position;
 834         map<RegionView*, pair<RouteTimeAxisView*, int> > final;
 835         RouteTimeAxisView* source_tv;
 836         vector<StatefulDiffCommand*> sdc;
 837
 838         if (!movement_occurred) {
 839                 /* just a click */
 840                 return;
 841         }
 842
 843         if (_brushing) {
 844                 /* all changes were made during motion event handlers */
 845
 846                 if (_copy) {
 847                         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
 848                                 copies.push_back (i->view);
 849                         }
 850                 }
 851
 852                 goto out;
 853         }
 854
 855         /* reverse this here so that we have the correct logic to finalize
 856            the drag.
 857         */
 858
 859         if (Config->get_edit_mode() == Lock) {
 860                 _x_constrained = !_x_constrained;
 861         }
 862
 863         if (_copy) {
 864                 if (_x_constrained) {
 865                         _editor->begin_reversible_command (_("fixed time region copy"));
 866                 } else {
 867                         _editor->begin_reversible_command (_("region copy"));
 868                 }
 869         } else {
 870                 if (_x_constrained) {
 871                         _editor->begin_reversible_command (_("fixed time region drag"));
 872                 } else {
 873                         _editor->begin_reversible_command (_("region drag"));
 874                 }
 875         }
 876
 877         changed_position = (_last_frame_position != (nframes64_t) (_primary->region()->position()));
 878         changed_tracks = (_dest_trackview != &_primary->get_time_axis_view());
 879
 880         drag_delta = _primary->region()->position() - _last_frame_position;
 881
 882         _editor->update_canvas_now ();
 883
 884         /* make a list of where each region ended up */
 885         final = find_time_axis_views_and_layers ();
 886
 887         cerr << "Iterate over " << _views.size() << " views\n";
 888
 889         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ) {
 890
 891                 RegionView* rv = i->view;
 892                 RouteTimeAxisView* dest_rtv = final[rv].first;
 893                 layer_t dest_layer = final[rv].second;
 894
 895                 nframes64_t where;
 896
 897                 from_playlist.reset ();
 898                 to_playlist.reset ();
 899
 900                 if (rv->region()->locked()) {
 901                         ++i;
 902                         continue;
 903                 }
 904
 905                 if (changed_position && !_x_constrained) {
 906                         where = rv->region()->position() - drag_delta;
 907                 } else {
 908                         where = rv->region()->position();
 909                 }
 910
 911                 boost::shared_ptr<Region> new_region;
 912
 913                 if (_copy) {
 914                         /* we already made a copy */
 915                         new_region = rv->region();
 916
 917                         /* undo the previous hide_dependent_views so that xfades don't
 918                            disappear on copying regions
 919                         */
 920
 921                         //rv->get_time_axis_view().reveal_dependent_views (*rv);
 922
 923                 } else if (changed_tracks && dest_rtv->playlist()) {
 924                         new_region = RegionFactory::create (rv->region());
 925                 }
 926
 927                 if (changed_tracks || _copy) {
 928
 929                         to_playlist = dest_rtv->playlist();
 930
 931                         if (!to_playlist) {
 932                                 ++i;
 933                                 continue;
 934                         }
 935
 936                         _editor->latest_regionviews.clear ();
 937
 938                         sigc::connection c = dest_rtv->view()->RegionViewAdded.connect (sigc::mem_fun(*_editor, &Editor::collect_new_region_view));
 939
 940                         insert_result = modified_playlists.insert (to_playlist);
 941
 942                         if (insert_result.second) {
 943                                 to_playlist->clear_history ();
 944                         }
 945
 946                         cerr << "To playlist " << to_playlist->name() << " region history contains "
 947                              << to_playlist->region_list().change().added.size() << " adds and "
 948                              << to_playlist->region_list().change().removed.size() << " removes\n";
 949
 950                         cerr << "Adding new region " << new_region->id() << " based on "
 951                              << rv->region()->id() << endl;
 952
 953                         to_playlist->add_region (new_region, where);
 954
 955                         if (dest_rtv->view()->layer_display() == Stacked) {
 956                                 new_region->set_layer (dest_layer);
 957                                 new_region->set_pending_explicit_relayer (true);
 958                         }
 959
 960                         c.disconnect ();
 961
 962                         if (!_editor->latest_regionviews.empty()) {
 963                                 // XXX why just the first one ? we only expect one
 964                                 // commented out in nick_m's canvas reworking. is that intended?
 965                                 //dest_atv->reveal_dependent_views (*latest_regionviews.front());
 966                                 new_views.push_back (_editor->latest_regionviews.front());
 967                         }
 968
 969                 } else {
 970                         rv->region()->clear_history ();
 971
 972                         /*
 973                            motion on the same track. plonk the previously reparented region
 974                            back to its original canvas group (its streamview).
 975                            No need to do anything for copies as they are fake regions which will be deleted.
 976                         */
 977
 978                         rv->get_canvas_group()->reparent (*dest_rtv->view()->canvas_item());
 979                         rv->get_canvas_group()->property_y() = i->initial_y;
 980                         rv->get_time_axis_view().reveal_dependent_views (*rv);
 981
 982                         /* just change the model */
 983
 984                         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
 985
 986                         if (dest_rtv->view()->layer_display() == Stacked) {
 987                                 rv->region()->set_layer (dest_layer);
 988                                 rv->region()->set_pending_explicit_relayer (true);
 989                         }
 990
 991                         /* freeze playlist to avoid lots of relayering in the case of a multi-region drag */
 992
 993                         frozen_insert_result = frozen_playlists.insert(playlist);
 994
 995                         if (frozen_insert_result.second) {
 996                                 playlist->freeze();
 997                         }
 998
 999                         cerr << "Moving region " << rv->region()->id() << endl;
1000
1001                         rv->region()->set_position (where, (void*) this);
1002
1003                         sdc.push_back (new StatefulDiffCommand (rv->region()));
1004                 }
1005
1006                 if (changed_tracks && !_copy) {
1007
1008                         /* get the playlist where this drag started. we can't use rv->region()->playlist()
1009                            because we may have copied the region and it has not been attached to a playlist.
1010                         */
1011
1012                         source_tv = dynamic_cast<RouteTimeAxisView*> (&rv->get_time_axis_view());
1013                         tr = source_tv->track();
1014                         from_playlist = tr->playlist();
1015
1016                         assert (source_tv);
1017                         assert (tr);
1018                         assert (from_playlist);
1019
1020                         /* moved to a different audio track, without copying */
1021
1022                         /* the region that used to be in the old playlist is not
1023                            moved to the new one - we use a copy of it. as a result,
1024                            any existing editor for the region should no longer be
1025                            visible.
1026                         */
1027
1028                         rv->hide_region_editor();
1029                         rv->fake_set_opaque (false);
1030
1031                         /* remove the region from the old playlist */
1032
1033                         insert_result = modified_playlists.insert (from_playlist);
1034
1035                         if (insert_result.second) {
1036                                 from_playlist->clear_history ();
1037                         }
1038
1039                         cerr << "From playlist " << from_playlist->name() << " region history contains "
1040                              << from_playlist->region_list().change().added.size() << " adds and "
1041                              << from_playlist->region_list().change().removed.size() << " removes\n";
1042
1043                         cerr << "removing region " << rv->region() << endl;
1044
1045                         from_playlist->remove_region (rv->region());
1046
1047                         /* OK, this is where it gets tricky. If the playlist was being used by >1 tracks, and the region
1048                            was selected in all of them, then removing it from a playlist will have removed all
1049                            trace of it from the selection (i.e. there were N regions selected, we removed 1,
1050                            but since its the same playlist for N tracks, all N tracks updated themselves, removed the
1051                            corresponding regionview, and the selection is now empty).
1052
1053                            this could have invalidated any and all iterators into the region selection.
1054
1055                            the heuristic we use here is: if the region selection is empty, break out of the loop
1056                            here. if the region selection is not empty, then restart the loop because we know that
1057                            we must have removed at least the region(view) we've just been working on as well as any
1058                            that we processed on previous iterations.
1059
1060                            EXCEPT .... if we are doing a copy drag, then the selection hasn't been modified and
1061                            we can just iterate.
1062                         */
1063
1064                         if (_views.empty()) {
1065                                 if (to_playlist) {
1066                                         sdc.push_back (new StatefulDiffCommand (to_playlist));
1067                                         cerr << "Saved diff for to:" << to_playlist->name() << endl;
1068                                 }
1069
1070                                 if (from_playlist && (from_playlist != to_playlist)) {
1071                                         sdc.push_back (new StatefulDiffCommand (from_playlist));
1072                                         cerr << "Saved diff for from:" << from_playlist->name() << endl;
1073                                 }
1074                                 break;
1075                         } else {
1076                                 i = _views.begin();
1077                         }
1078
1079                 } else {
1080                         ++i;
1081                 }
1082
1083                 if (_copy) {
1084                         copies.push_back (rv);
1085                 }
1086
1087                 cerr << "Done with TV, top = " << to_playlist << " from = " << from_playlist << endl;
1088
1089                 if (to_playlist) {
1090                         sdc.push_back (new StatefulDiffCommand (to_playlist));
1091                         cerr << "Saved diff for to:" << to_playlist->name() << endl;
1092                 }
1093
1094                 if (from_playlist && (from_playlist != to_playlist)) {
1095                         sdc.push_back (new StatefulDiffCommand (from_playlist));
1096                         cerr << "Saved diff for from:" << from_playlist->name() << endl;
1097                 }
1098         }
1099
1100         /*
1101            if we've created new regions either by copying or moving
1102            to a new track, we want to replace the old selection with the new ones
1103         */
1104
1105         if (new_views.size() > 0) {
1106                 _editor->selection->set (new_views);
1107         }
1108
1109         for (set<boost::shared_ptr<Playlist> >::iterator p = frozen_playlists.begin(); p != frozen_playlists.end(); ++p) {
1110                 (*p)->thaw();
1111         }
1112
1113   out:
1114         for (vector<StatefulDiffCommand*>::iterator i = sdc.begin(); i != sdc.end(); ++i) {
1115                 _editor->session()->add_command (*i);
1116         }
1117
1118         _editor->commit_reversible_command ();
1119
1120         for (vector<RegionView*>::iterator x = copies.begin(); x != copies.end(); ++x) {
1121                 delete *x;
1122         }
1123 }
1124
1125 void
1126 RegionMoveDrag::aborted ()
1127 {
1128         if (_copy) {
1129
1130                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1131                         delete i->view;
1132                 }
1133
1134                 _views.clear ();
1135
1136         } else {
1137                 RegionMotionDrag::aborted ();
1138         }
1139 }
1140
1141 void
1142 RegionMotionDrag::aborted ()
1143 {
1144         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1145                 RegionView* rv = i->view;
1146                 TimeAxisView* tv = &(rv->get_time_axis_view ());
1147                 RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1148                 assert (rtv);
1149                 rv->get_canvas_group()->reparent (*rtv->view()->canvas_item());
1150                 rv->get_canvas_group()->property_y() = 0;
1151                 rv->get_time_axis_view().reveal_dependent_views (*rv);
1152                 rv->fake_set_opaque (false);
1153                 rv->move (-_total_x_delta, 0);
1154                 rv->set_height (rtv->view()->child_height ());
1155         }
1156
1157         _editor->update_canvas_now ();
1158 }
1159
1160
1161 bool
1162 RegionMotionDrag::x_move_allowed () const
1163 {
1164         if (Config->get_edit_mode() == Lock) {
1165                 /* in locked edit mode, reverse the usual meaning of _x_constrained */
1166                 return _x_constrained;
1167         }
1168
1169         return !_x_constrained;
1170 }
1171
1172 void
1173 RegionMotionDrag::copy_regions (GdkEvent* event)
1174 {
1175         /* duplicate the regionview(s) and region(s) */
1176
1177         list<DraggingView> new_regionviews;
1178
1179         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1180
1181                 RegionView* rv = i->view;
1182                 AudioRegionView* arv = dynamic_cast<AudioRegionView*>(rv);
1183                 MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(rv);
1184
1185                 const boost::shared_ptr<const Region> original = rv->region();
1186                 boost::shared_ptr<Region> region_copy = RegionFactory::create (original);
1187                 region_copy->set_position (original->position(), this);
1188
1189                 RegionView* nrv;
1190                 if (arv) {
1191                         boost::shared_ptr<AudioRegion> audioregion_copy
1192                                 = boost::dynamic_pointer_cast<AudioRegion>(region_copy);
1193
1194                         nrv = new AudioRegionView (*arv, audioregion_copy);
1195                 } else if (mrv) {
1196                         boost::shared_ptr<MidiRegion> midiregion_copy
1197                                 = boost::dynamic_pointer_cast<MidiRegion>(region_copy);
1198                         nrv = new MidiRegionView (*mrv, midiregion_copy);
1199                 } else {
1200                         continue;
1201                 }
1202
1203                 nrv->get_canvas_group()->show ();
1204                 new_regionviews.push_back (DraggingView (nrv));
1205
1206                 /* swap _primary to the copy */
1207
1208                 if (rv == _primary) {
1209                         _primary = nrv;
1210                 }
1211
1212                 /* ..and deselect the one we copied */
1213
1214                 rv->set_selected (false);
1215         }
1216
1217         if (new_regionviews.empty()) {
1218                 return;
1219         }
1220
1221         /* reflect the fact that we are dragging the copies */
1222
1223         _views = new_regionviews;
1224
1225         swap_grab (new_regionviews.front().view->get_canvas_group (), 0, event ? event->motion.time : 0);
1226
1227         /*
1228            sync the canvas to what we think is its current state
1229            without it, the canvas seems to
1230            "forget" to update properly after the upcoming reparent()
1231            ..only if the mouse is in rapid motion at the time of the grab.
1232            something to do with regionview creation taking so long?
1233         */
1234         _editor->update_canvas_now();
1235 }
1236
1237 bool
1238 RegionMotionDrag::check_possible (RouteTimeAxisView** tv, layer_t* layer)
1239 {
1240         /* Which trackview is this ? */
1241
1242         pair<TimeAxisView*, int> const tvp = _editor->trackview_by_y_position (_drags->current_pointer_y ());
1243         (*tv) = dynamic_cast<RouteTimeAxisView*> (tvp.first);
1244         (*layer) = tvp.second;
1245
1246         if (*tv && (*tv)->layer_display() == Overlaid) {
1247                 *layer = 0;
1248         }
1249
1250         /* The region motion is only processed if the pointer is over
1251            an audio track.
1252         */
1253
1254         if (!(*tv) || !(*tv)->is_track()) {
1255                 /* To make sure we hide the verbose canvas cursor when the mouse is
1256                    not held over and audiotrack.
1257                 */
1258                 _editor->hide_verbose_canvas_cursor ();
1259                 return false;
1260         }
1261
1262         return true;
1263 }
1264
1265 /** @param new_order New track order.
1266  *  @param old_order Old track order.
1267  *  @param visible_y_low Lowest visible order.
1268  *  @return true if y movement should not happen, otherwise false.
1269  */
1270 bool
1271 RegionMotionDrag::y_movement_disallowed (int new_order, int old_order, int y_span, TimeAxisViewSummary const & tavs) const
1272 {
1273         if (new_order != old_order) {
1274
1275                 /* this isn't the pointer track */
1276
1277                 if (y_span > 0) {
1278
1279                         /* moving up the canvas */
1280                         if ( (new_order - y_span) >= tavs.visible_y_low) {
1281
1282                                 int32_t n = 0;
1283
1284                                 /* work out where we'll end up with this y span, taking hidden TimeAxisViews into account */
1285                                 int32_t visible_tracks = 0;
1286                                 while (visible_tracks < y_span ) {
1287                                         visible_tracks++;
1288                                         while (tavs.height_list[new_order - (visible_tracks - n)] == 0) {
1289                                                 /* passing through a hidden track */
1290                                                 n--;
1291                                         }
1292                                 }
1293
1294                                 if (tavs.tracks[new_order - (y_span - n)] != 0x00) {
1295                                         /* moving to a non-track; disallow */
1296                                         return true;
1297                                 }
1298
1299
1300                         } else {
1301                                 /* moving beyond the lowest visible track; disallow */
1302                                 return true;
1303                         }
1304
1305                 } else if (y_span < 0) {
1306
1307                         /* moving down the canvas */
1308                         if ((new_order - y_span) <= tavs.visible_y_high) {
1309
1310                                 int32_t visible_tracks = 0;
1311                                 int32_t n = 0;
1312                                 while (visible_tracks > y_span ) {
1313                                         visible_tracks--;
1314
1315                                         while (tavs.height_list[new_order - (visible_tracks - n)] == 0) {
1316                                                 /* passing through a hidden track */
1317                                                 n++;
1318                                         }
1319                                 }
1320
1321                                 if (tavs.tracks[new_order - (y_span - n)] != 0x00) {
1322                                         /* moving to a non-track; disallow */
1323                                         return true;
1324                                 }
1325
1326
1327                         } else {
1328
1329                                 /* moving beyond the highest visible track; disallow */
1330                                 return true;
1331                         }
1332                 }
1333
1334         } else {
1335
1336                 /* this is the pointer's track */
1337
1338                 if ((new_order - y_span) > tavs.visible_y_high) {
1339                         /* we will overflow */
1340                         return true;
1341                 } else if ((new_order - y_span) < tavs.visible_y_low) {
1342                         /* we will overflow */
1343                         return true;
1344                 }
1345         }
1346
1347         return false;
1348 }
1349
1350
1351 RegionMoveDrag::RegionMoveDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v, bool b, bool c)
1352         : RegionMotionDrag (e, i, p, v, b),
1353           _copy (c)
1354 {
1355         TimeAxisView* const tv = &_primary->get_time_axis_view ();
1356
1357         _dest_trackview = tv;
1358         if (tv->layer_display() == Overlaid) {
1359                 _dest_layer = 0;
1360         } else {
1361                 _dest_layer = _primary->region()->layer ();
1362         }
1363
1364         double speed = 1;
1365         RouteTimeAxisView* rtv = dynamic_cast<RouteTimeAxisView*> (tv);
1366         if (rtv && rtv->is_track()) {
1367                 speed = rtv->track()->speed ();
1368         }
1369
1370         _last_frame_position = static_cast<nframes64_t> (_primary->region()->position() / speed);
1371 }
1372
1373 void
1374 RegionMoveDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
1375 {
1376         RegionMotionDrag::start_grab (event, c);
1377
1378         _pointer_frame_offset = grab_frame() - _last_frame_position;
1379 }
1380
1381 RegionInsertDrag::RegionInsertDrag (Editor* e, boost::shared_ptr<Region> r, RouteTimeAxisView* v, nframes64_t pos)
1382         : RegionMotionDrag (e, 0, 0, list<RegionView*> (), false)
1383 {
1384         assert ((boost::dynamic_pointer_cast<AudioRegion> (r) && dynamic_cast<AudioTimeAxisView*> (v)) ||
1385                 (boost::dynamic_pointer_cast<MidiRegion> (r) && dynamic_cast<MidiTimeAxisView*> (v)));
1386
1387         _primary = v->view()->create_region_view (r, false, false);
1388
1389         _primary->get_canvas_group()->show ();
1390         _primary->set_position (pos, 0);
1391         _views.push_back (DraggingView (_primary));
1392
1393         _last_frame_position = pos;
1394
1395         _item = _primary->get_canvas_group ();
1396         _dest_trackview = v;
1397         _dest_layer = _primary->region()->layer ();
1398 }
1399
1400 map<RegionView*, pair<RouteTimeAxisView*, int> >
1401 RegionMotionDrag::find_time_axis_views_and_layers ()
1402 {
1403         map<RegionView*, pair<RouteTimeAxisView*, int> > tav;
1404
1405         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1406
1407                 double ix1, ix2, iy1, iy2;
1408                 RegionView* rv = i->view;
1409                 rv->get_canvas_frame()->get_bounds (ix1, iy1, ix2, iy2);
1410                 rv->get_canvas_frame()->i2w (ix1, iy1);
1411                 iy1 += _editor->vertical_adjustment.get_value() - _editor->canvas_timebars_vsize;
1412
1413                 pair<TimeAxisView*, int> tv = _editor->trackview_by_y_position (iy1);
1414                 tav[rv] = make_pair (dynamic_cast<RouteTimeAxisView*> (tv.first), tv.second);
1415         }
1416
1417         return tav;
1418 }
1419
1420
1421 void
1422 RegionInsertDrag::finished (GdkEvent* /*event*/, bool /*movement_occurred*/)
1423 {
1424         _editor->update_canvas_now ();
1425
1426         map<RegionView*, pair<RouteTimeAxisView*, int> > final = find_time_axis_views_and_layers ();
1427
1428         RouteTimeAxisView* dest_rtv = final[_primary].first;
1429
1430         _primary->get_canvas_group()->reparent (*dest_rtv->view()->canvas_item());
1431         _primary->get_canvas_group()->property_y() = 0;
1432
1433         boost::shared_ptr<Playlist> playlist = dest_rtv->playlist();
1434
1435         _editor->begin_reversible_command (_("insert region"));
1436         playlist->clear_history ();
1437         playlist->add_region (_primary->region (), _last_frame_position);
1438         _editor->session()->add_command (new StatefulDiffCommand (playlist));
1439         _editor->commit_reversible_command ();
1440
1441         delete _primary;
1442         _primary = 0;
1443         _views.clear ();
1444 }
1445
1446 void
1447 RegionInsertDrag::aborted ()
1448 {
1449         delete _primary;
1450         _primary = 0;
1451         _views.clear ();
1452 }
1453
1454 RegionSpliceDrag::RegionSpliceDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1455         : RegionMoveDrag (e, i, p, v, false, false)
1456 {
1457
1458 }
1459
1460 struct RegionSelectionByPosition {
1461     bool operator() (RegionView*a, RegionView* b) {
1462             return a->region()->position () < b->region()->position();
1463     }
1464 };
1465
1466 void
1467 RegionSpliceDrag::motion (GdkEvent* event, bool)
1468 {
1469         RouteTimeAxisView* tv;
1470         layer_t layer;
1471
1472         if (!check_possible (&tv, &layer)) {
1473                 return;
1474         }
1475
1476         int dir;
1477
1478         if ((_drags->current_pointer_x() - last_pointer_x()) > 0) {
1479                 dir = 1;
1480         } else {
1481                 dir = -1;
1482         }
1483
1484         RegionSelection copy (_editor->selection->regions);
1485
1486         RegionSelectionByPosition cmp;
1487         copy.sort (cmp);
1488
1489         nframes64_t const pf = adjusted_current_frame (event);
1490
1491         for (RegionSelection::iterator i = copy.begin(); i != copy.end(); ++i) {
1492
1493                 RouteTimeAxisView* atv = dynamic_cast<RouteTimeAxisView*> (&(*i)->get_time_axis_view());
1494
1495                 if (!atv) {
1496                         continue;
1497                 }
1498
1499                 boost::shared_ptr<Playlist> playlist;
1500
1501                 if ((playlist = atv->playlist()) == 0) {
1502                         continue;
1503                 }
1504
1505                 if (!playlist->region_is_shuffle_constrained ((*i)->region())) {
1506                         continue;
1507                 }
1508
1509                 if (dir > 0) {
1510                         if (pf < (*i)->region()->last_frame() + 1) {
1511                                 continue;
1512                         }
1513                 } else {
1514                         if (pf > (*i)->region()->first_frame()) {
1515                                 continue;
1516                         }
1517                 }
1518
1519
1520                 playlist->shuffle ((*i)->region(), dir);
1521         }
1522 }
1523
1524 void
1525 RegionSpliceDrag::finished (GdkEvent* /*event*/, bool)
1526 {
1527
1528 }
1529
1530 void
1531 RegionSpliceDrag::aborted ()
1532 {
1533         /* XXX: TODO */
1534 }
1535
1536 RegionCreateDrag::RegionCreateDrag (Editor* e, ArdourCanvas::Item* i, TimeAxisView* v)
1537         : Drag (e, i),
1538           _view (v)
1539 {
1540
1541 }
1542
1543 void
1544 RegionCreateDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
1545 {
1546         _dest_trackview = _view;
1547
1548         Drag::start_grab (event);
1549 }
1550
1551
1552 void
1553 RegionCreateDrag::motion (GdkEvent* /*event*/, bool first_move)
1554 {
1555         if (first_move) {
1556                 // TODO: create region-create-drag region view here
1557         }
1558
1559         // TODO: resize region-create-drag region view here
1560 }
1561
1562 void
1563 RegionCreateDrag::finished (GdkEvent* event, bool movement_occurred)
1564 {
1565         MidiTimeAxisView* mtv = dynamic_cast<MidiTimeAxisView*> (_dest_trackview);
1566
1567         if (!mtv) {
1568                 return;
1569         }
1570
1571         if (!movement_occurred) {
1572                 mtv->add_region (grab_frame ());
1573         } else {
1574                 motion (event, false);
1575                 // TODO: create region-create-drag region here
1576         }
1577 }
1578
1579 void
1580 RegionCreateDrag::aborted ()
1581 {
1582         /* XXX: TODO */
1583 }
1584
1585 NoteResizeDrag::NoteResizeDrag (Editor* e, ArdourCanvas::Item* i)
1586         : Drag (e, i)
1587         , region (0)
1588 {
1589
1590 }
1591
1592 void
1593 NoteResizeDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*ignored*/)
1594 {
1595         Gdk::Cursor* cursor;
1596         ArdourCanvas::CanvasNote* cnote = dynamic_cast<ArdourCanvas::CanvasNote*>(_item);
1597
1598         Drag::start_grab (event);
1599
1600         region = &cnote->region_view();
1601
1602         double const region_start = region->get_position_pixels();
1603         double const middle_point = region_start + cnote->x1() + (cnote->x2() - cnote->x1()) / 2.0L;
1604
1605         if (grab_x() <= middle_point) {
1606                 cursor = _editor->left_side_trim_cursor;
1607                 at_front = true;
1608         } else {
1609                 cursor = _editor->right_side_trim_cursor;
1610                 at_front = false;
1611         }
1612
1613         _item->grab(GDK_POINTER_MOTION_MASK | GDK_BUTTON_RELEASE_MASK, *cursor, event->motion.time);
1614
1615         if (event->motion.state & Keyboard::PrimaryModifier) {
1616                 relative = false;
1617         } else {
1618                 relative = true;
1619         }
1620
1621         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1622
1623         if (ms.size() > 1) {
1624                 /* has to be relative, may make no sense otherwise */
1625                 relative = true;
1626         }
1627
1628         /* select this note; if it is already selected, preserve the existing selection,
1629            otherwise make this note the only one selected.
1630         */
1631         region->note_selected (cnote, cnote->selected ());
1632
1633         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ) {
1634                 MidiRegionSelection::iterator next;
1635                 next = r;
1636                 ++next;
1637                 (*r)->begin_resizing (at_front);
1638                 r = next;
1639         }
1640 }
1641
1642 void
1643 NoteResizeDrag::motion (GdkEvent* /*event*/, bool /*first_move*/)
1644 {
1645         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1646         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
1647                 (*r)->update_resizing (dynamic_cast<ArdourCanvas::CanvasNote*>(_item), at_front, _drags->current_pointer_x() - grab_x(), relative);
1648         }
1649 }
1650
1651 void
1652 NoteResizeDrag::finished (GdkEvent*, bool /*movement_occurred*/)
1653 {
1654         MidiRegionSelection& ms (_editor->get_selection().midi_regions);
1655         for (MidiRegionSelection::iterator r = ms.begin(); r != ms.end(); ++r) {
1656                 (*r)->commit_resizing (dynamic_cast<ArdourCanvas::CanvasNote*>(_item), at_front, _drags->current_pointer_x() - grab_x(), relative);
1657         }
1658 }
1659
1660 void
1661 NoteResizeDrag::aborted ()
1662 {
1663         /* XXX: TODO */
1664 }
1665
1666 void
1667 RegionGainDrag::motion (GdkEvent* /*event*/, bool)
1668 {
1669
1670 }
1671
1672 void
1673 RegionGainDrag::finished (GdkEvent *, bool)
1674 {
1675
1676 }
1677
1678 void
1679 RegionGainDrag::aborted ()
1680 {
1681         /* XXX: TODO */
1682 }
1683
1684 TrimDrag::TrimDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
1685         : RegionDrag (e, i, p, v)
1686         , _have_transaction (false)
1687 {
1688
1689 }
1690
1691 void
1692 TrimDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
1693 {
1694         double speed = 1.0;
1695         TimeAxisView* tvp = &_primary->get_time_axis_view ();
1696         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
1697
1698         if (tv && tv->is_track()) {
1699                 speed = tv->track()->speed();
1700         }
1701
1702         nframes64_t const region_start = (nframes64_t) (_primary->region()->position() / speed);
1703         nframes64_t const region_end = (nframes64_t) (_primary->region()->last_frame() / speed);
1704         nframes64_t const region_length = (nframes64_t) (_primary->region()->length() / speed);
1705
1706         nframes64_t const pf = adjusted_current_frame (event);
1707
1708         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
1709                 _operation = ContentsTrim;
1710                 Drag::start_grab (event, _editor->trimmer_cursor);
1711         } else {
1712                 /* These will get overridden for a point trim.*/
1713                 if (pf < (region_start + region_length/2)) {
1714                         /* closer to start */
1715                         _operation = StartTrim;
1716                         Drag::start_grab (event, _editor->left_side_trim_cursor);
1717                 } else {
1718                         /* closer to end */
1719                         _operation = EndTrim;
1720                         Drag::start_grab (event, _editor->right_side_trim_cursor);
1721                 }
1722         }
1723
1724         switch (_operation) {
1725         case StartTrim:
1726                 _editor->show_verbose_time_cursor (region_start, 10);
1727                 break;
1728         case EndTrim:
1729                 _editor->show_verbose_time_cursor (region_end, 10);
1730                 break;
1731         case ContentsTrim:
1732                 _editor->show_verbose_time_cursor (pf, 10);
1733                 break;
1734         }
1735 }
1736
1737 void
1738 TrimDrag::motion (GdkEvent* event, bool first_move)
1739 {
1740         RegionView* rv = _primary;
1741
1742         /* snap modifier works differently here..
1743            its current state has to be passed to the
1744            various trim functions in order to work properly
1745         */
1746
1747         double speed = 1.0;
1748         TimeAxisView* tvp = &_primary->get_time_axis_view ();
1749         RouteTimeAxisView* tv = dynamic_cast<RouteTimeAxisView*>(tvp);
1750         pair<set<boost::shared_ptr<Playlist> >::iterator,bool> insert_result;
1751
1752         if (tv && tv->is_track()) {
1753                 speed = tv->track()->speed();
1754         }
1755
1756         nframes64_t const pf = adjusted_current_frame (event);
1757
1758         if (first_move) {
1759
1760                 string trim_type;
1761
1762                 switch (_operation) {
1763                 case StartTrim:
1764                         trim_type = "Region start trim";
1765                         break;
1766                 case EndTrim:
1767                         trim_type = "Region end trim";
1768                         break;
1769                 case ContentsTrim:
1770                         trim_type = "Region content trim";
1771                         break;
1772                 }
1773
1774                 _editor->begin_reversible_command (trim_type);
1775                 _have_transaction = true;
1776
1777                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1778                         RegionView* rv = i->view;
1779                         rv->fake_set_opaque(false);
1780                         rv->enable_display (false);
1781                         rv->region()->clear_history ();
1782                         rv->region()->suspend_property_changes ();
1783
1784                         AudioRegionView* const arv = dynamic_cast<AudioRegionView*> (rv);
1785
1786                         if (arv){
1787                                 arv->temporarily_hide_envelope ();
1788                         }
1789
1790                         boost::shared_ptr<Playlist> pl = rv->region()->playlist();
1791                         insert_result = _editor->motion_frozen_playlists.insert (pl);
1792
1793                         if (insert_result.second) {
1794                                 pl->freeze();
1795                         }
1796                 }
1797         }
1798
1799         bool non_overlap_trim = false;
1800
1801         if (event && Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
1802                 non_overlap_trim = true;
1803         }
1804
1805         switch (_operation) {
1806         case StartTrim:
1807                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1808                         _editor->single_start_trim (*i->view, pf, non_overlap_trim);
1809                 }
1810                 break;
1811
1812         case EndTrim:
1813                 for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1814                         _editor->single_end_trim (*i->view, pf, non_overlap_trim);
1815                 }
1816                 break;
1817
1818         case ContentsTrim:
1819                 {
1820                         bool swap_direction = false;
1821
1822                         if (event && Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
1823                                 swap_direction = true;
1824                         }
1825
1826                         nframes64_t frame_delta = 0;
1827
1828                         bool left_direction = false;
1829                         if (last_pointer_frame() > pf) {
1830                                 left_direction = true;
1831                         }
1832
1833                         if (left_direction) {
1834                                 frame_delta = (last_pointer_frame() - pf);
1835                         } else {
1836                                 frame_delta = (pf - last_pointer_frame());
1837                         }
1838
1839                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1840                                 _editor->single_contents_trim (*i->view, frame_delta, left_direction, swap_direction);
1841                         }
1842                 }
1843                 break;
1844         }
1845
1846         switch (_operation) {
1847         case StartTrim:
1848                 _editor->show_verbose_time_cursor((nframes64_t) (rv->region()->position()/speed), 10);
1849                 break;
1850         case EndTrim:
1851                 _editor->show_verbose_time_cursor((nframes64_t) (rv->region()->last_frame()/speed), 10);
1852                 break;
1853         case ContentsTrim:
1854                 _editor->show_verbose_time_cursor (pf, 10);
1855                 break;
1856         }
1857 }
1858
1859
1860 void
1861 TrimDrag::finished (GdkEvent* event, bool movement_occurred)
1862 {
1863         if (movement_occurred) {
1864                 motion (event, false);
1865
1866                 if (!_editor->selection->selected (_primary)) {
1867                         _editor->thaw_region_after_trim (*_primary);
1868                 } else {
1869
1870                         for (list<DraggingView>::const_iterator i = _views.begin(); i != _views.end(); ++i) {
1871                                 _editor->thaw_region_after_trim (*i->view);
1872                                 i->view->enable_display (true);
1873                                 i->view->fake_set_opaque (true);
1874                                 if (_have_transaction) {
1875                                         _editor->session()->add_command (new StatefulDiffCommand (i->view->region()));
1876                                 }
1877                         }
1878                 }
1879                 for (set<boost::shared_ptr<Playlist> >::iterator p = _editor->motion_frozen_playlists.begin(); p != _editor->motion_frozen_playlists.end(); ++p) {
1880                         (*p)->thaw ();
1881                 }
1882
1883                 _editor->motion_frozen_playlists.clear ();
1884
1885                 if (_have_transaction) {
1886                         _editor->commit_reversible_command();
1887                 }
1888
1889         } else {
1890                 /* no mouse movement */
1891                 _editor->point_trim (event, adjusted_current_frame (event));
1892         }
1893 }
1894
1895 void
1896 TrimDrag::aborted ()
1897 {
1898         /* Our motion method is changing model state, so use the Undo system
1899            to cancel.  Perhaps not ideal, as this will leave an Undo point
1900            behind which may be slightly odd from the user's point of view.
1901         */
1902
1903         finished (0, true);
1904
1905         if (_have_transaction) {
1906                 _editor->undo ();
1907         }
1908 }
1909
1910 MeterMarkerDrag::MeterMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
1911         : Drag (e, i),
1912           _copy (c)
1913 {
1914         _marker = reinterpret_cast<MeterMarker*> (_item->get_data ("marker"));
1915         assert (_marker);
1916 }
1917
1918 void
1919 MeterMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
1920 {
1921         if (_copy) {
1922                 // create a dummy marker for visual representation of moving the copy.
1923                 // The actual copying is not done before we reach the finish callback.
1924                 char name[64];
1925                 snprintf (name, sizeof(name), "%g/%g", _marker->meter().beats_per_bar(), _marker->meter().note_divisor ());
1926                 MeterMarker* new_marker = new MeterMarker(*_editor, *_editor->meter_group, ARDOUR_UI::config()->canvasvar_MeterMarker.get(), name,
1927                                                           *new MeterSection (_marker->meter()));
1928
1929                 _item = &new_marker->the_item ();
1930                 _marker = new_marker;
1931
1932         } else {
1933
1934                 MetricSection& section (_marker->meter());
1935
1936                 if (!section.movable()) {
1937                         return;
1938                 }
1939
1940         }
1941
1942         Drag::start_grab (event, cursor);
1943
1944         _pointer_frame_offset = grab_frame() - _marker->meter().frame();
1945
1946         _editor->show_verbose_time_cursor (adjusted_current_frame(event), 10);
1947 }
1948
1949 void
1950 MeterMarkerDrag::motion (GdkEvent* event, bool)
1951 {
1952         nframes64_t const pf = adjusted_current_frame (event);
1953
1954         _marker->set_position (pf);
1955
1956         _editor->show_verbose_time_cursor (pf, 10);
1957 }
1958
1959 void
1960 MeterMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
1961 {
1962         if (!movement_occurred) {
1963                 return;
1964         }
1965
1966         motion (event, false);
1967
1968         BBT_Time when;
1969
1970         TempoMap& map (_editor->session()->tempo_map());
1971         map.bbt_time (last_pointer_frame(), when);
1972
1973         if (_copy == true) {
1974                 _editor->begin_reversible_command (_("copy meter mark"));
1975                 XMLNode &before = map.get_state();
1976                 map.add_meter (_marker->meter(), when);
1977                 XMLNode &after = map.get_state();
1978                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
1979                 _editor->commit_reversible_command ();
1980
1981                 // delete the dummy marker we used for visual representation of copying.
1982                 // a new visual marker will show up automatically.
1983                 delete _marker;
1984         } else {
1985                 _editor->begin_reversible_command (_("move meter mark"));
1986                 XMLNode &before = map.get_state();
1987                 map.move_meter (_marker->meter(), when);
1988                 XMLNode &after = map.get_state();
1989                 _editor->session()->add_command(new MementoCommand<TempoMap>(map, &before, &after));
1990                 _editor->commit_reversible_command ();
1991         }
1992 }
1993
1994 void
1995 MeterMarkerDrag::aborted ()
1996 {
1997         _marker->set_position (_marker->meter().frame ());
1998 }
1999
2000 TempoMarkerDrag::TempoMarkerDrag (Editor* e, ArdourCanvas::Item* i, bool c)
2001         : Drag (e, i),
2002           _copy (c)
2003 {
2004         _marker = reinterpret_cast<TempoMarker*> (_item->get_data ("marker"));
2005         assert (_marker);
2006 }
2007
2008 void
2009 TempoMarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2010 {
2011
2012         if (_copy) {
2013
2014                 // create a dummy marker for visual representation of moving the copy.
2015                 // The actual copying is not done before we reach the finish callback.
2016                 char name[64];
2017                 snprintf (name, sizeof (name), "%.2f", _marker->tempo().beats_per_minute());
2018                 TempoMarker* new_marker = new TempoMarker(*_editor, *_editor->tempo_group, ARDOUR_UI::config()->canvasvar_TempoMarker.get(), name,
2019                                                           *new TempoSection (_marker->tempo()));
2020
2021                 _item = &new_marker->the_item ();
2022                 _marker = new_marker;
2023
2024         } else {
2025
2026                 MetricSection& section (_marker->tempo());
2027
2028                 if (!section.movable()) {
2029                         return;
2030                 }
2031         }
2032
2033         Drag::start_grab (event, cursor);
2034
2035         _pointer_frame_offset = grab_frame() - _marker->tempo().frame();
2036         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
2037 }
2038
2039 void
2040 TempoMarkerDrag::motion (GdkEvent* event, bool)
2041 {
2042         nframes64_t const pf = adjusted_current_frame (event);
2043         _marker->set_position (pf);
2044         _editor->show_verbose_time_cursor (pf, 10);
2045 }
2046
2047 void
2048 TempoMarkerDrag::finished (GdkEvent* event, bool movement_occurred)
2049 {
2050         if (!movement_occurred) {
2051                 return;
2052         }
2053
2054         motion (event, false);
2055
2056         BBT_Time when;
2057
2058         TempoMap& map (_editor->session()->tempo_map());
2059         map.bbt_time (last_pointer_frame(), when);
2060
2061         if (_copy == true) {
2062                 _editor->begin_reversible_command (_("copy tempo mark"));
2063                 XMLNode &before = map.get_state();
2064                 map.add_tempo (_marker->tempo(), when);
2065                 XMLNode &after = map.get_state();
2066                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
2067                 _editor->commit_reversible_command ();
2068
2069                 // delete the dummy marker we used for visual representation of copying.
2070                 // a new visual marker will show up automatically.
2071                 delete _marker;
2072         } else {
2073                 _editor->begin_reversible_command (_("move tempo mark"));
2074                 XMLNode &before = map.get_state();
2075                 map.move_tempo (_marker->tempo(), when);
2076                 XMLNode &after = map.get_state();
2077                 _editor->session()->add_command (new MementoCommand<TempoMap>(map, &before, &after));
2078                 _editor->commit_reversible_command ();
2079         }
2080 }
2081
2082 void
2083 TempoMarkerDrag::aborted ()
2084 {
2085         _marker->set_position (_marker->tempo().frame());
2086 }
2087
2088 CursorDrag::CursorDrag (Editor* e, ArdourCanvas::Item* i, bool s)
2089         : Drag (e, i),
2090           _stop (s)
2091 {
2092         _cursor = reinterpret_cast<EditorCursor*> (_item->get_data ("cursor"));
2093         assert (_cursor);
2094 }
2095
2096 void
2097 CursorDrag::start_grab (GdkEvent* event, Gdk::Cursor* c)
2098 {
2099         Drag::start_grab (event, c);
2100
2101         if (!_stop) {
2102
2103                 nframes64_t where = _editor->event_frame (event, 0, 0);
2104
2105                 _editor->snap_to_with_modifier (where, event);
2106                 _editor->playhead_cursor->set_position (where);
2107
2108         }
2109
2110         if (_cursor == _editor->playhead_cursor) {
2111                 _editor->_dragging_playhead = true;
2112
2113                 if (_editor->session()) {
2114                         if (_was_rolling && _stop) {
2115                                 _editor->session()->request_stop ();
2116                         }
2117
2118                         if (_editor->session()->is_auditioning()) {
2119                                 _editor->session()->cancel_audition ();
2120                         }
2121
2122                         nframes64_t const f = _editor->playhead_cursor->current_frame;
2123                         _editor->session()->send_mmc_locate (f);
2124                         _editor->session()->send_full_time_code (f);
2125                 }
2126         }
2127
2128         _pointer_frame_offset = grab_frame() - _cursor->current_frame;
2129
2130         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2131 }
2132
2133 void
2134 CursorDrag::motion (GdkEvent* event, bool)
2135 {
2136         nframes64_t const adjusted_frame = adjusted_current_frame (event);
2137
2138         if (adjusted_frame == last_pointer_frame()) {
2139                 return;
2140         }
2141
2142         _cursor->set_position (adjusted_frame);
2143
2144         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2145
2146         if (_editor->session() && _item == &_editor->playhead_cursor->canvas_item) {
2147                 nframes64_t const f = _editor->playhead_cursor->current_frame;
2148                 _editor->session()->send_mmc_locate (f);
2149                 _editor->session()->send_full_time_code (f);
2150         }
2151
2152
2153 #ifdef GTKOSX
2154         _editor->update_canvas_now ();
2155 #endif
2156         _editor->UpdateAllTransportClocks (_cursor->current_frame);
2157 }
2158
2159 void
2160 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
2161 {
2162         _editor->_dragging_playhead = false;
2163
2164         if (!movement_occurred && _stop) {
2165                 return;
2166         }
2167
2168         motion (event, false);
2169
2170         if (_item == &_editor->playhead_cursor->canvas_item) {
2171                 if (_editor->session()) {
2172                         _editor->session()->request_locate (_editor->playhead_cursor->current_frame, _was_rolling);
2173                         _editor->_pending_locate_request = true;
2174                 }
2175         }
2176 }
2177
2178 void
2179 CursorDrag::aborted ()
2180 {
2181         _editor->_dragging_playhead = false;
2182         _cursor->set_position (adjusted_frame (grab_frame (), 0, false));
2183 }
2184
2185 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2186         : RegionDrag (e, i, p, v)
2187 {
2188
2189 }
2190
2191 void
2192 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2193 {
2194         Drag::start_grab (event, cursor);
2195
2196         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2197         boost::shared_ptr<AudioRegion> const r = a->audio_region ();
2198
2199         _pointer_frame_offset = grab_frame() - ((nframes64_t) r->fade_in()->back()->when + r->position());
2200         _editor->show_verbose_duration_cursor (r->position(), r->position() + r->fade_in()->back()->when, 10);
2201
2202 }
2203
2204 void
2205 FadeInDrag::motion (GdkEvent* event, bool)
2206 {
2207         nframes64_t fade_length;
2208
2209         nframes64_t const pos = adjusted_current_frame (event);
2210
2211         boost::shared_ptr<Region> region = _primary->region ();
2212
2213         if (pos < (region->position() + 64)) {
2214                 fade_length = 64; // this should be a minimum defined somewhere
2215         } else if (pos > region->last_frame()) {
2216                 fade_length = region->length();
2217         } else {
2218                 fade_length = pos - region->position();
2219         }
2220
2221         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2222
2223                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2224
2225                 if (!tmp) {
2226                         continue;
2227                 }
2228
2229                 tmp->reset_fade_in_shape_width (fade_length);
2230         }
2231
2232         _editor->show_verbose_duration_cursor (region->position(), region->position() + fade_length, 10);
2233 }
2234
2235 void
2236 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
2237 {
2238         if (!movement_occurred) {
2239                 return;
2240         }
2241
2242         nframes64_t fade_length;
2243
2244         nframes64_t const pos = adjusted_current_frame (event);
2245
2246         boost::shared_ptr<Region> region = _primary->region ();
2247
2248         if (pos < (region->position() + 64)) {
2249                 fade_length = 64; // this should be a minimum defined somewhere
2250         } else if (pos > region->last_frame()) {
2251                 fade_length = region->length();
2252         } else {
2253                 fade_length = pos - region->position();
2254         }
2255
2256         _editor->begin_reversible_command (_("change fade in length"));
2257
2258         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2259
2260                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2261
2262                 if (!tmp) {
2263                         continue;
2264                 }
2265
2266                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
2267                 XMLNode &before = alist->get_state();
2268
2269                 tmp->audio_region()->set_fade_in_length (fade_length);
2270                 tmp->audio_region()->set_fade_in_active (true);
2271
2272                 XMLNode &after = alist->get_state();
2273                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2274         }
2275
2276         _editor->commit_reversible_command ();
2277 }
2278
2279 void
2280 FadeInDrag::aborted ()
2281 {
2282         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2283                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2284
2285                 if (!tmp) {
2286                         continue;
2287                 }
2288
2289                 tmp->reset_fade_in_shape_width (tmp->audio_region()->fade_in()->back()->when);
2290         }
2291 }
2292
2293 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2294         : RegionDrag (e, i, p, v)
2295 {
2296
2297 }
2298
2299 void
2300 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2301 {
2302         Drag::start_grab (event, cursor);
2303
2304         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2305         boost::shared_ptr<AudioRegion> r = a->audio_region ();
2306
2307         _pointer_frame_offset = grab_frame() - (r->length() - (nframes64_t) r->fade_out()->back()->when + r->position());
2308         _editor->show_verbose_duration_cursor (r->last_frame() - r->fade_out()->back()->when, r->last_frame(), 10);
2309 }
2310
2311 void
2312 FadeOutDrag::motion (GdkEvent* event, bool)
2313 {
2314         nframes64_t fade_length;
2315
2316         nframes64_t const pos = adjusted_current_frame (event);
2317
2318         boost::shared_ptr<Region> region = _primary->region ();
2319
2320         if (pos > (region->last_frame() - 64)) {
2321                 fade_length = 64; // this should really be a minimum fade defined somewhere
2322         }
2323         else if (pos < region->position()) {
2324                 fade_length = region->length();
2325         }
2326         else {
2327                 fade_length = region->last_frame() - pos;
2328         }
2329
2330         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2331
2332                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2333
2334                 if (!tmp) {
2335                         continue;
2336                 }
2337
2338                 tmp->reset_fade_out_shape_width (fade_length);
2339         }
2340
2341         _editor->show_verbose_duration_cursor (region->last_frame() - fade_length, region->last_frame(), 10);
2342 }
2343
2344 void
2345 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
2346 {
2347         if (!movement_occurred) {
2348                 return;
2349         }
2350
2351         nframes64_t fade_length;
2352
2353         nframes64_t const pos = adjusted_current_frame (event);
2354
2355         boost::shared_ptr<Region> region = _primary->region ();
2356
2357         if (pos > (region->last_frame() - 64)) {
2358                 fade_length = 64; // this should really be a minimum fade defined somewhere
2359         }
2360         else if (pos < region->position()) {
2361                 fade_length = region->length();
2362         }
2363         else {
2364                 fade_length = region->last_frame() - pos;
2365         }
2366
2367         _editor->begin_reversible_command (_("change fade out length"));
2368
2369         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2370
2371                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2372
2373                 if (!tmp) {
2374                         continue;
2375                 }
2376
2377                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
2378                 XMLNode &before = alist->get_state();
2379
2380                 tmp->audio_region()->set_fade_out_length (fade_length);
2381                 tmp->audio_region()->set_fade_out_active (true);
2382
2383                 XMLNode &after = alist->get_state();
2384                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2385         }
2386
2387         _editor->commit_reversible_command ();
2388 }
2389
2390 void
2391 FadeOutDrag::aborted ()
2392 {
2393         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2394                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2395
2396                 if (!tmp) {
2397                         continue;
2398                 }
2399
2400                 tmp->reset_fade_out_shape_width (tmp->audio_region()->fade_out()->back()->when);
2401         }
2402 }
2403
2404 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
2405         : Drag (e, i)
2406 {
2407         _marker = reinterpret_cast<Marker*> (_item->get_data ("marker"));
2408         assert (_marker);
2409
2410         _points.push_back (Gnome::Art::Point (0, 0));
2411         _points.push_back (Gnome::Art::Point (0, _editor->physical_screen_height));
2412
2413         _line = new ArdourCanvas::Line (*_editor->timebar_group);
2414         _line->property_width_pixels() = 1;
2415         _line->property_points () = _points;
2416         _line->hide ();
2417
2418         _line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
2419 }
2420
2421 MarkerDrag::~MarkerDrag ()
2422 {
2423         for (list<Location*>::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
2424                 delete *i;
2425         }
2426 }
2427
2428 void
2429 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2430 {
2431         Drag::start_grab (event, cursor);
2432
2433         bool is_start;
2434
2435         Location *location = _editor->find_location_from_marker (_marker, is_start);
2436         _editor->_dragging_edit_point = true;
2437
2438         _pointer_frame_offset = grab_frame() - (is_start ? location->start() : location->end());
2439
2440         update_item (location);
2441
2442         // _drag_line->show();
2443         // _line->raise_to_top();
2444
2445         if (is_start) {
2446                 _editor->show_verbose_time_cursor (location->start(), 10);
2447         } else {
2448                 _editor->show_verbose_time_cursor (location->end(), 10);
2449         }
2450
2451         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2452
2453         switch (op) {
2454         case Selection::Toggle:
2455                 _editor->selection->toggle (_marker);
2456                 break;
2457         case Selection::Set:
2458                 if (!_editor->selection->selected (_marker)) {
2459                         _editor->selection->set (_marker);
2460                 }
2461                 break;
2462         case Selection::Extend:
2463         {
2464                 Locations::LocationList ll;
2465                 list<Marker*> to_add;
2466                 nframes64_t s, e;
2467                 _editor->selection->markers.range (s, e);
2468                 s = min (_marker->position(), s);
2469                 e = max (_marker->position(), e);
2470                 s = min (s, e);
2471                 e = max (s, e);
2472                 if (e < max_frames) {
2473                         ++e;
2474                 }
2475                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
2476                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
2477                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
2478                         if (lm) {
2479                                 if (lm->start) {
2480                                         to_add.push_back (lm->start);
2481                                 }
2482                                 if (lm->end) {
2483                                         to_add.push_back (lm->end);
2484                                 }
2485                         }
2486                 }
2487                 if (!to_add.empty()) {
2488                         _editor->selection->add (to_add);
2489                 }
2490                 break;
2491         }
2492         case Selection::Add:
2493                 _editor->selection->add (_marker);
2494                 break;
2495         }
2496
2497         /* Set up copies for us to manipulate during the drag */
2498
2499         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
2500                 Location* l = _editor->find_location_from_marker (*i, is_start);
2501                 _copied_locations.push_back (new Location (*l));
2502         }
2503 }
2504
2505 void
2506 MarkerDrag::motion (GdkEvent* event, bool)
2507 {
2508         nframes64_t f_delta = 0;
2509         bool is_start;
2510         bool move_both = false;
2511         Marker* marker;
2512         Location *real_location;
2513         Location *copy_location = 0;
2514
2515         nframes64_t const newframe = adjusted_current_frame (event);
2516
2517         nframes64_t next = newframe;
2518
2519         if (newframe == last_pointer_frame()) {
2520                 return;
2521         }
2522
2523         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
2524                 move_both = true;
2525         }
2526
2527         MarkerSelection::iterator i;
2528         list<Location*>::iterator x;
2529
2530         /* find the marker we're dragging, and compute the delta */
2531
2532         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2533              x != _copied_locations.end() && i != _editor->selection->markers.end();
2534              ++i, ++x) {
2535
2536                 copy_location = *x;
2537                 marker = *i;
2538
2539                 if (marker == _marker) {
2540
2541                         if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2542                                 /* que pasa ?? */
2543                                 return;
2544                         }
2545
2546                         if (real_location->is_mark()) {
2547                                 f_delta = newframe - copy_location->start();
2548                         } else {
2549
2550
2551                                 switch (marker->type()) {
2552                                 case Marker::Start:
2553                                 case Marker::LoopStart:
2554                                 case Marker::PunchIn:
2555                                         f_delta = newframe - copy_location->start();
2556                                         break;
2557
2558                                 case Marker::End:
2559                                 case Marker::LoopEnd:
2560                                 case Marker::PunchOut:
2561                                         f_delta = newframe - copy_location->end();
2562                                         break;
2563                                 default:
2564                                         /* what kind of marker is this ? */
2565                                         return;
2566                                 }
2567                         }
2568                         break;
2569                 }
2570         }
2571
2572         if (i == _editor->selection->markers.end()) {
2573                 /* hmm, impossible - we didn't find the dragged marker */
2574                 return;
2575         }
2576
2577         /* now move them all */
2578
2579         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2580              x != _copied_locations.end() && i != _editor->selection->markers.end();
2581              ++i, ++x) {
2582
2583                 copy_location = *x;
2584                 marker = *i;
2585
2586                 /* call this to find out if its the start or end */
2587
2588                 if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2589                         continue;
2590                 }
2591
2592                 if (real_location->locked()) {
2593                         continue;
2594                 }
2595
2596                 if (copy_location->is_mark()) {
2597
2598                         /* now move it */
2599
2600                         copy_location->set_start (copy_location->start() + f_delta);
2601
2602                 } else {
2603
2604                         nframes64_t new_start = copy_location->start() + f_delta;
2605                         nframes64_t new_end = copy_location->end() + f_delta;
2606
2607                         if (is_start) { // start-of-range marker
2608
2609                                 if (move_both) {
2610                                         copy_location->set_start (new_start);
2611                                         copy_location->set_end (new_end);
2612                                 } else  if (new_start < copy_location->end()) {
2613                                         copy_location->set_start (new_start);
2614                                 } else {
2615                                         _editor->snap_to (next, 1, true);
2616                                         copy_location->set_end (next);
2617                                         copy_location->set_start (newframe);
2618                                 }
2619
2620                         } else { // end marker
2621
2622                                 if (move_both) {
2623                                         copy_location->set_end (new_end);
2624                                         copy_location->set_start (new_start);
2625                                 } else if (new_end > copy_location->start()) {
2626                                         copy_location->set_end (new_end);
2627                                 } else if (newframe > 0) {
2628                                         _editor->snap_to (next, -1, true);
2629                                         copy_location->set_start (next);
2630                                         copy_location->set_end (newframe);
2631                                 }
2632                         }
2633                 }
2634
2635                 update_item (copy_location);
2636
2637                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
2638
2639                 if (lm) {
2640                         lm->set_position (copy_location->start(), copy_location->end());
2641                 }
2642         }
2643
2644         assert (!_copied_locations.empty());
2645
2646         _editor->show_verbose_time_cursor (newframe, 10);
2647
2648 #ifdef GTKOSX
2649         _editor->update_canvas_now ();
2650 #endif
2651 }
2652
2653 void
2654 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
2655 {
2656         if (!movement_occurred) {
2657
2658                 /* just a click, do nothing but finish
2659                    off the selection process
2660                 */
2661
2662                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2663
2664                 switch (op) {
2665                 case Selection::Set:
2666                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
2667                                 _editor->selection->set (_marker);
2668                         }
2669                         break;
2670
2671                 case Selection::Toggle:
2672                 case Selection::Extend:
2673                 case Selection::Add:
2674                         break;
2675                 }
2676
2677                 return;
2678         }
2679
2680         _editor->_dragging_edit_point = false;
2681
2682         _editor->begin_reversible_command ( _("move marker") );
2683         XMLNode &before = _editor->session()->locations()->get_state();
2684
2685         MarkerSelection::iterator i;
2686         list<Location*>::iterator x;
2687         bool is_start;
2688
2689         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2690              x != _copied_locations.end() && i != _editor->selection->markers.end();
2691              ++i, ++x) {
2692
2693                 Location * location = _editor->find_location_from_marker (*i, is_start);
2694
2695                 if (location) {
2696
2697                         if (location->locked()) {
2698                                 return;
2699                         }
2700
2701                         if (location->is_mark()) {
2702                                 location->set_start ((*x)->start());
2703                         } else {
2704                                 location->set ((*x)->start(), (*x)->end());
2705                         }
2706                 }
2707         }
2708
2709         XMLNode &after = _editor->session()->locations()->get_state();
2710         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
2711         _editor->commit_reversible_command ();
2712
2713         _line->hide();
2714 }
2715
2716 void
2717 MarkerDrag::aborted ()
2718 {
2719         /* XXX: TODO */
2720 }
2721
2722 void
2723 MarkerDrag::update_item (Location* location)
2724 {
2725         double const x1 = _editor->frame_to_pixel (location->start());
2726
2727         _points.front().set_x(x1);
2728         _points.back().set_x(x1);
2729         _line->property_points() = _points;
2730 }
2731
2732 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
2733         : Drag (e, i),
2734           _cumulative_x_drag (0),
2735           _cumulative_y_drag (0)
2736 {
2737         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
2738         assert (_point);
2739 }
2740
2741
2742 void
2743 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2744 {
2745         Drag::start_grab (event, _editor->fader_cursor);
2746
2747         // start the grab at the center of the control point so
2748         // the point doesn't 'jump' to the mouse after the first drag
2749         _time_axis_view_grab_x = _point->get_x();
2750         _time_axis_view_grab_y = _point->get_y();
2751
2752         float const fraction = 1 - (_point->get_y() / _point->line().height());
2753
2754         _point->line().start_drag_single (_point, _time_axis_view_grab_x, fraction);
2755
2756         _editor->set_verbose_canvas_cursor (_point->line().get_verbose_cursor_string (fraction),
2757                                             event->button.x + 10, event->button.y + 10);
2758
2759         _editor->show_verbose_canvas_cursor ();
2760 }
2761
2762 void
2763 ControlPointDrag::motion (GdkEvent* event, bool)
2764 {
2765         double dx = _drags->current_pointer_x() - last_pointer_x();
2766         double dy = _drags->current_pointer_y() - last_pointer_y();
2767
2768         if (event->button.state & Keyboard::SecondaryModifier) {
2769                 dx *= 0.1;
2770                 dy *= 0.1;
2771         }
2772
2773         /* coordinate in TimeAxisView's space */
2774         double cx = _time_axis_view_grab_x + _cumulative_x_drag + dx;
2775         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2776
2777         // calculate zero crossing point. back off by .01 to stay on the
2778         // positive side of zero
2779         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
2780
2781         // make sure we hit zero when passing through
2782         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
2783                 cy = zero_gain_y;
2784         }
2785
2786         if (_x_constrained) {
2787                 cx = _time_axis_view_grab_x;
2788         }
2789         if (_y_constrained) {
2790                 cy = _time_axis_view_grab_y;
2791         }
2792
2793         _cumulative_x_drag = cx - _time_axis_view_grab_x;
2794         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2795
2796         cx = max (0.0, cx);
2797         cy = max (0.0, cy);
2798         cy = min ((double) _point->line().height(), cy);
2799
2800         nframes64_t cx_frames = _editor->unit_to_frame (cx);
2801
2802         if (!_x_constrained) {
2803                 _editor->snap_to_with_modifier (cx_frames, event);
2804         }
2805
2806         float const fraction = 1.0 - (cy / _point->line().height());
2807
2808         bool const push = Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier);
2809
2810         _point->line().drag_motion (_editor->frame_to_unit (cx_frames), fraction, false, push);
2811
2812         _editor->set_verbose_canvas_cursor_text (_point->line().get_verbose_cursor_string (fraction));
2813 }
2814
2815 void
2816 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
2817 {
2818         if (!movement_occurred) {
2819
2820                 /* just a click */
2821
2822                 if ((event->type == GDK_BUTTON_RELEASE) && (event->button.button == 1) && Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
2823                         _editor->reset_point_selection ();
2824                 }
2825
2826         } else {
2827                 motion (event, false);
2828         }
2829         _point->line().end_drag ();
2830 }
2831
2832 void
2833 ControlPointDrag::aborted ()
2834 {
2835         _point->line().reset ();
2836 }
2837
2838 bool
2839 ControlPointDrag::active (Editing::MouseMode m)
2840 {
2841         if (m == Editing::MouseGain) {
2842                 /* always active in mouse gain */
2843                 return true;
2844         }
2845
2846         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
2847         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
2848 }
2849
2850 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
2851         : Drag (e, i),
2852           _line (0),
2853           _cumulative_y_drag (0)
2854 {
2855
2856 }
2857 void
2858 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2859 {
2860         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
2861         assert (_line);
2862
2863         _item = &_line->grab_item ();
2864
2865         /* need to get x coordinate in terms of parent (TimeAxisItemView)
2866            origin, and ditto for y.
2867         */
2868
2869         double cx = event->button.x;
2870         double cy = event->button.y;
2871
2872         _line->parent_group().w2i (cx, cy);
2873
2874         nframes64_t const frame_within_region = (nframes64_t) floor (cx * _editor->frames_per_unit);
2875
2876         uint32_t before;
2877         uint32_t after;
2878
2879         if (!_line->control_points_adjacent (frame_within_region, before, after)) {
2880                 /* no adjacent points */
2881                 return;
2882         }
2883
2884         Drag::start_grab (event, _editor->fader_cursor);
2885
2886         /* store grab start in parent frame */
2887
2888         _time_axis_view_grab_x = cx;
2889         _time_axis_view_grab_y = cy;
2890
2891         double fraction = 1.0 - (cy / _line->height());
2892
2893         _line->start_drag_line (before, after, fraction);
2894
2895         _editor->set_verbose_canvas_cursor (_line->get_verbose_cursor_string (fraction),
2896                                             event->button.x + 10, event->button.y + 10);
2897
2898         _editor->show_verbose_canvas_cursor ();
2899 }
2900
2901 void
2902 LineDrag::motion (GdkEvent* event, bool)
2903 {
2904         double dy = _drags->current_pointer_y() - last_pointer_y();
2905
2906         if (event->button.state & Keyboard::SecondaryModifier) {
2907                 dy *= 0.1;
2908         }
2909
2910         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2911
2912         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2913
2914         cy = max (0.0, cy);
2915         cy = min ((double) _line->height(), cy);
2916
2917         double const fraction = 1.0 - (cy / _line->height());
2918
2919         bool push;
2920
2921         if (Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier)) {
2922                 push = false;
2923         } else {
2924                 push = true;
2925         }
2926
2927         /* we are ignoring x position for this drag, so we can just pass in anything */
2928         _line->drag_motion (0, fraction, true, push);
2929
2930         _editor->set_verbose_canvas_cursor_text (_line->get_verbose_cursor_string (fraction));
2931 }
2932
2933 void
2934 LineDrag::finished (GdkEvent* event, bool)
2935 {
2936         motion (event, false);
2937         _line->end_drag ();
2938 }
2939
2940 void
2941 LineDrag::aborted ()
2942 {
2943         _line->reset ();
2944 }
2945
2946 FeatureLineDrag::FeatureLineDrag (Editor* e, ArdourCanvas::Item* i)
2947         : Drag (e, i),
2948           _line (0),
2949           _cumulative_x_drag (0)
2950 {
2951
2952 }
2953 void
2954 FeatureLineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2955 {
2956
2957         Drag::start_grab (event);
2958
2959         _line = reinterpret_cast<SimpleLine*> (_item);
2960         assert (_line);
2961
2962         /* need to get x coordinate in terms of parent (AudioRegionView) origin. */
2963
2964         double cx = event->button.x;
2965         double cy = event->button.y;
2966
2967         _item->property_parent().get_value()->w2i(cx, cy);
2968
2969         /* store grab start in parent frame */
2970         _region_view_grab_x = cx;
2971
2972         _before = _line->property_x1();
2973
2974         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
2975
2976         _max_x = _editor->frame_to_pixel(_arv->get_duration());
2977 }
2978
2979 void
2980 FeatureLineDrag::motion (GdkEvent* event, bool)
2981 {
2982         double dx = _drags->current_pointer_x() - last_pointer_x();
2983
2984         double cx = _region_view_grab_x + _cumulative_x_drag + dx;
2985
2986         _cumulative_x_drag += dx;
2987
2988         /* Clamp the min and max extent of the drag to keep it within the region view bounds */
2989
2990         if (cx > _max_x){
2991                 cx = _max_x;
2992         }
2993         else if(cx < 0){
2994                 cx = 0;
2995         }
2996
2997         _line->property_x1() = cx;
2998         _line->property_x2() = cx;
2999
3000         _before = _line->property_x1();
3001 }
3002
3003 void
3004 FeatureLineDrag::finished (GdkEvent* event, bool)
3005 {
3006         _arv = reinterpret_cast<AudioRegionView*> (_item->get_data ("regionview"));
3007         _arv->update_transient(_before, _line->property_x1());
3008 }
3009
3010 void
3011 FeatureLineDrag::aborted ()
3012 {
3013         //_line->reset ();
3014 }
3015
3016 void
3017 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3018 {
3019         Drag::start_grab (event);
3020         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3021 }
3022
3023 void
3024 RubberbandSelectDrag::motion (GdkEvent* event, bool)
3025 {
3026         nframes64_t start;
3027         nframes64_t end;
3028         double y1;
3029         double y2;
3030
3031         nframes64_t const pf = adjusted_current_frame (event, Config->get_rubberbanding_snaps_to_grid ());
3032
3033         nframes64_t grab = grab_frame ();
3034         if (Config->get_rubberbanding_snaps_to_grid ()) {
3035                 _editor->snap_to_with_modifier (grab, event);
3036         }
3037
3038         /* base start and end on initial click position */
3039
3040         if (pf < grab) {
3041                 start = pf;
3042                 end = grab;
3043         } else {
3044                 end = pf;
3045                 start = grab;
3046         }
3047
3048         if (_drags->current_pointer_y() < grab_y()) {
3049                 y1 = _drags->current_pointer_y();
3050                 y2 = grab_y();
3051         } else {
3052                 y2 = _drags->current_pointer_y();
3053                 y1 = grab_y();
3054         }
3055
3056
3057         if (start != end || y1 != y2) {
3058
3059                 double x1 = _editor->frame_to_pixel (start);
3060                 double x2 = _editor->frame_to_pixel (end);
3061
3062                 _editor->rubberband_rect->property_x1() = x1;
3063                 _editor->rubberband_rect->property_y1() = y1;
3064                 _editor->rubberband_rect->property_x2() = x2;
3065                 _editor->rubberband_rect->property_y2() = y2;
3066
3067                 _editor->rubberband_rect->show();
3068                 _editor->rubberband_rect->raise_to_top();
3069
3070                 _editor->show_verbose_time_cursor (pf, 10);
3071         }
3072 }
3073
3074 void
3075 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
3076 {
3077         if (movement_occurred) {
3078
3079                 motion (event, false);
3080
3081                 double y1,y2;
3082                 if (_drags->current_pointer_y() < grab_y()) {
3083                         y1 = _drags->current_pointer_y();
3084                         y2 = grab_y();
3085                 } else {
3086                         y2 = _drags->current_pointer_y();
3087                         y1 = grab_y();
3088                 }
3089
3090
3091                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3092                 bool committed;
3093
3094                 _editor->begin_reversible_command (_("rubberband selection"));
3095
3096                 if (grab_frame() < last_pointer_frame()) {
3097                         committed = _editor->select_all_within (grab_frame(), last_pointer_frame() - 1, y1, y2, _editor->track_views, op);
3098                 } else {
3099                         committed = _editor->select_all_within (last_pointer_frame(), grab_frame() - 1, y1, y2, _editor->track_views, op);
3100                 }
3101
3102                 if (!committed) {
3103                         _editor->commit_reversible_command ();
3104                 }
3105
3106         } else {
3107                 if (!getenv("ARDOUR_SAE")) {
3108                         _editor->selection->clear_tracks();
3109                 }
3110                 _editor->selection->clear_regions();
3111                 _editor->selection->clear_points ();
3112                 _editor->selection->clear_lines ();
3113         }
3114
3115         _editor->rubberband_rect->hide();
3116 }
3117
3118 void
3119 RubberbandSelectDrag::aborted ()
3120 {
3121         _editor->rubberband_rect->hide ();
3122 }
3123
3124 void
3125 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3126 {
3127         Drag::start_grab (event);
3128
3129         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3130 }
3131
3132 void
3133 TimeFXDrag::motion (GdkEvent* event, bool)
3134 {
3135         RegionView* rv = _primary;
3136
3137         nframes64_t const pf = adjusted_current_frame (event);
3138
3139         if (pf > rv->region()->position()) {
3140                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf);
3141         }
3142
3143         _editor->show_verbose_time_cursor (pf, 10);
3144 }
3145
3146 void
3147 TimeFXDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3148 {
3149         _primary->get_time_axis_view().hide_timestretch ();
3150
3151         if (!movement_occurred) {
3152                 return;
3153         }
3154
3155         if (last_pointer_frame() < _primary->region()->position()) {
3156                 /* backwards drag of the left edge - not usable */
3157                 return;
3158         }
3159
3160         nframes64_t newlen = last_pointer_frame() - _primary->region()->position();
3161
3162         float percentage = (double) newlen / (double) _primary->region()->length();
3163
3164 #ifndef USE_RUBBERBAND
3165         // Soundtouch uses percentage / 100 instead of normal (/ 1)
3166         if (_primary->region()->data_type() == DataType::AUDIO) {
3167                 percentage = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
3168         }
3169 #endif
3170
3171         _editor->begin_reversible_command (_("timestretch"));
3172
3173         // XXX how do timeFX on multiple regions ?
3174
3175         RegionSelection rs;
3176         rs.add (_primary);
3177
3178         if (_editor->time_stretch (rs, percentage) == -1) {
3179                 error << _("An error occurred while executing time stretch operation") << endmsg;
3180         }
3181 }
3182
3183 void
3184 TimeFXDrag::aborted ()
3185 {
3186         _primary->get_time_axis_view().hide_timestretch ();
3187 }
3188
3189
3190 void
3191 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3192 {
3193         Drag::start_grab (event);
3194 }
3195
3196 void
3197 ScrubDrag::motion (GdkEvent* /*event*/, bool)
3198 {
3199         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
3200 }
3201
3202 void
3203 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3204 {
3205         if (movement_occurred && _editor->session()) {
3206                 /* make sure we stop */
3207                 _editor->session()->request_transport_speed (0.0);
3208         }
3209 }
3210
3211 void
3212 ScrubDrag::aborted ()
3213 {
3214         /* XXX: TODO */
3215 }
3216
3217 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3218         : Drag (e, i)
3219         , _operation (o)
3220         , _copy (false)
3221         , _original_pointer_time_axis (-1)
3222         , _last_pointer_time_axis (-1)
3223 {
3224
3225 }
3226
3227 void
3228 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
3229 {
3230         nframes64_t start = 0;
3231         nframes64_t end = 0;
3232
3233         if (_editor->session() == 0) {
3234                 return;
3235         }
3236
3237         Gdk::Cursor* cursor = 0;
3238
3239         switch (_operation) {
3240         case CreateSelection:
3241                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3242                         _copy = true;
3243                 } else {
3244                         _copy = false;
3245                 }
3246                 cursor = _editor->selector_cursor;
3247                 Drag::start_grab (event, cursor);
3248                 break;
3249
3250         case SelectionStartTrim:
3251                 if (_editor->clicked_axisview) {
3252                         _editor->clicked_axisview->order_selection_trims (_item, true);
3253                 }
3254                 Drag::start_grab (event, _editor->left_side_trim_cursor);
3255                 start = _editor->selection->time[_editor->clicked_selection].start;
3256                 _pointer_frame_offset = grab_frame() - start;
3257                 break;
3258
3259         case SelectionEndTrim:
3260                 if (_editor->clicked_axisview) {
3261                         _editor->clicked_axisview->order_selection_trims (_item, false);
3262                 }
3263                 Drag::start_grab (event, _editor->right_side_trim_cursor);
3264                 end = _editor->selection->time[_editor->clicked_selection].end;
3265                 _pointer_frame_offset = grab_frame() - end;
3266                 break;
3267
3268         case SelectionMove:
3269                 start = _editor->selection->time[_editor->clicked_selection].start;
3270                 Drag::start_grab (event, cursor);
3271                 _pointer_frame_offset = grab_frame() - start;
3272                 break;
3273         }
3274
3275         if (_operation == SelectionMove) {
3276                 _editor->show_verbose_time_cursor (start, 10);
3277         } else {
3278                 _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3279         }
3280
3281         _original_pointer_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ()).first->order ();
3282 }
3283
3284 void
3285 SelectionDrag::motion (GdkEvent* event, bool first_move)
3286 {
3287         nframes64_t start = 0;
3288         nframes64_t end = 0;
3289         nframes64_t length;
3290
3291         pair<TimeAxisView*, int> const pending_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ());
3292         if (pending_time_axis.first == 0) {
3293                 return;
3294         }
3295
3296         nframes64_t const pending_position = adjusted_current_frame (event);
3297
3298         /* only alter selection if things have changed */
3299
3300         if (pending_time_axis.first->order() == _last_pointer_time_axis && pending_position == last_pointer_frame()) {
3301                 return;
3302         }
3303
3304         switch (_operation) {
3305         case CreateSelection:
3306         {
3307                 nframes64_t grab = grab_frame ();
3308
3309                 if (first_move) {
3310                         _editor->snap_to (grab);
3311                 }
3312
3313                 if (pending_position < grab_frame()) {
3314                         start = pending_position;
3315                         end = grab;
3316                 } else {
3317                         end = pending_position;
3318                         start = grab;
3319                 }
3320
3321                 /* first drag: Either add to the selection
3322                    or create a new selection
3323                 */
3324
3325                 if (first_move) {
3326
3327                         if (_copy) {
3328                                 /* adding to the selection */
3329                                 _editor->selection->add (_editor->clicked_axisview);
3330                                 _editor->clicked_selection = _editor->selection->add (start, end);
3331                                 _copy = false;
3332                         } else {
3333                                 /* new selection */
3334
3335                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
3336                                         _editor->selection->set (_editor->clicked_axisview);
3337                                 }
3338
3339                                 _editor->clicked_selection = _editor->selection->set (start, end);
3340                         }
3341                 }
3342
3343                 /* select the track that we're in */
3344                 if (find (_added_time_axes.begin(), _added_time_axes.end(), pending_time_axis.first) == _added_time_axes.end()) {
3345                         _editor->selection->add (pending_time_axis.first);
3346                         _added_time_axes.push_back (pending_time_axis.first);
3347                 }
3348
3349                 /* deselect any tracks that this drag no longer includes, being careful to only deselect
3350                    tracks that we selected in the first place.
3351                 */
3352
3353                 int min_order = min (_original_pointer_time_axis, pending_time_axis.first->order());
3354                 int max_order = max (_original_pointer_time_axis, pending_time_axis.first->order());
3355
3356                 list<TimeAxisView*>::iterator i = _added_time_axes.begin();
3357                 while (i != _added_time_axes.end()) {
3358
3359                         list<TimeAxisView*>::iterator tmp = i;
3360                         ++tmp;
3361
3362                         if ((*i)->order() < min_order || (*i)->order() > max_order) {
3363                                 _editor->selection->remove (*i);
3364                                 _added_time_axes.remove (*i);
3365                         }
3366
3367                         i = tmp;
3368                 }
3369
3370         }
3371         break;
3372
3373         case SelectionStartTrim:
3374
3375                 start = _editor->selection->time[_editor->clicked_selection].start;
3376                 end = _editor->selection->time[_editor->clicked_selection].end;
3377
3378                 if (pending_position > end) {
3379                         start = end;
3380                 } else {
3381                         start = pending_position;
3382                 }
3383                 break;
3384
3385         case SelectionEndTrim:
3386
3387                 start = _editor->selection->time[_editor->clicked_selection].start;
3388                 end = _editor->selection->time[_editor->clicked_selection].end;
3389
3390                 if (pending_position < start) {
3391                         end = start;
3392                 } else {
3393                         end = pending_position;
3394                 }
3395
3396                 break;
3397
3398         case SelectionMove:
3399
3400                 start = _editor->selection->time[_editor->clicked_selection].start;
3401                 end = _editor->selection->time[_editor->clicked_selection].end;
3402
3403                 length = end - start;
3404
3405                 start = pending_position;
3406                 _editor->snap_to (start);
3407
3408                 end = start + length;
3409
3410                 break;
3411         }
3412
3413         if (event->button.x >= _editor->horizontal_position() + _editor->_canvas_width) {
3414                 _editor->start_canvas_autoscroll (1, 0);
3415         }
3416
3417         if (start != end) {
3418                 _editor->selection->replace (_editor->clicked_selection, start, end);
3419         }
3420
3421         if (_operation == SelectionMove) {
3422                 _editor->show_verbose_time_cursor(start, 10);
3423         } else {
3424                 _editor->show_verbose_time_cursor(pending_position, 10);
3425         }
3426 }
3427
3428 void
3429 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
3430 {
3431         Session* s = _editor->session();
3432
3433         if (movement_occurred) {
3434                 motion (event, false);
3435                 /* XXX this is not object-oriented programming at all. ick */
3436                 if (_editor->selection->time.consolidate()) {
3437                         _editor->selection->TimeChanged ();
3438                 }
3439
3440                 /* XXX what if its a music time selection? */
3441                 if (s && (s->config.get_auto_play() || (s->get_play_range() && s->transport_rolling()))) {
3442                         s->request_play_range (&_editor->selection->time, true);
3443                 }
3444
3445
3446         } else {
3447                 /* just a click, no pointer movement.*/
3448
3449                 if (Keyboard::no_modifier_keys_pressed (&event->button)) {
3450                         _editor->selection->clear_time();
3451                 }
3452
3453                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
3454                         _editor->selection->set (_editor->clicked_axisview);
3455                 }
3456
3457                 if (s && s->get_play_range () && s->transport_rolling()) {
3458                         s->request_stop (false, false);
3459                 }
3460
3461         }
3462
3463         _editor->stop_canvas_autoscroll ();
3464 }
3465
3466 void
3467 SelectionDrag::aborted ()
3468 {
3469         /* XXX: TODO */
3470 }
3471
3472 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3473         : Drag (e, i),
3474           _operation (o),
3475           _copy (false)
3476 {
3477         _drag_rect = new ArdourCanvas::SimpleRect (*_editor->time_line_group, 0.0, 0.0, 0.0, _editor->physical_screen_height);
3478         _drag_rect->hide ();
3479
3480         _drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3481         _drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3482 }
3483
3484 void
3485 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3486 {
3487         if (_editor->session() == 0) {
3488                 return;
3489         }
3490
3491         Gdk::Cursor* cursor = 0;
3492
3493         if (!_editor->temp_location) {
3494                 _editor->temp_location = new Location;
3495         }
3496
3497         switch (_operation) {
3498         case CreateRangeMarker:
3499         case CreateTransportMarker:
3500         case CreateCDMarker:
3501
3502                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3503                         _copy = true;
3504                 } else {
3505                         _copy = false;
3506                 }
3507                 cursor = _editor->selector_cursor;
3508                 break;
3509         }
3510
3511         Drag::start_grab (event, cursor);
3512
3513         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3514 }
3515
3516 void
3517 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
3518 {
3519         nframes64_t start = 0;
3520         nframes64_t end = 0;
3521         ArdourCanvas::SimpleRect *crect;
3522
3523         switch (_operation) {
3524         case CreateRangeMarker:
3525                 crect = _editor->range_bar_drag_rect;
3526                 break;
3527         case CreateTransportMarker:
3528                 crect = _editor->transport_bar_drag_rect;
3529                 break;
3530         case CreateCDMarker:
3531                 crect = _editor->cd_marker_bar_drag_rect;
3532                 break;
3533         default:
3534                 cerr << "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()" << endl;
3535                 return;
3536                 break;
3537         }
3538
3539         nframes64_t const pf = adjusted_current_frame (event);
3540
3541         if (_operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
3542                 nframes64_t grab = grab_frame ();
3543                 _editor->snap_to (grab);
3544
3545                 if (pf < grab_frame()) {
3546                         start = pf;
3547                         end = grab;
3548                 } else {
3549                         end = pf;
3550                         start = grab;
3551                 }
3552
3553                 /* first drag: Either add to the selection
3554                    or create a new selection.
3555                 */
3556
3557                 if (first_move) {
3558
3559                         _editor->temp_location->set (start, end);
3560
3561                         crect->show ();
3562
3563                         update_item (_editor->temp_location);
3564                         _drag_rect->show();
3565                         //_drag_rect->raise_to_top();
3566
3567                 }
3568         }
3569
3570         if (event->button.x >= _editor->horizontal_position() + _editor->_canvas_width) {
3571                 _editor->start_canvas_autoscroll (1, 0);
3572         }
3573
3574         if (start != end) {
3575                 _editor->temp_location->set (start, end);
3576
3577                 double x1 = _editor->frame_to_pixel (start);
3578                 double x2 = _editor->frame_to_pixel (end);
3579                 crect->property_x1() = x1;
3580                 crect->property_x2() = x2;
3581
3582                 update_item (_editor->temp_location);
3583         }
3584
3585         _editor->show_verbose_time_cursor (pf, 10);
3586
3587 }
3588
3589 void
3590 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
3591 {
3592         Location * newloc = 0;
3593         string rangename;
3594         int flags;
3595
3596         if (movement_occurred) {
3597                 motion (event, false);
3598                 _drag_rect->hide();
3599
3600                 switch (_operation) {
3601                 case CreateRangeMarker:
3602                 case CreateCDMarker:
3603                     {
3604                         _editor->begin_reversible_command (_("new range marker"));
3605                         XMLNode &before = _editor->session()->locations()->get_state();
3606                         _editor->session()->locations()->next_available_name(rangename,"unnamed");
3607                         if (_operation == CreateCDMarker) {
3608                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
3609                                 _editor->cd_marker_bar_drag_rect->hide();
3610                         }
3611                         else {
3612                                 flags = Location::IsRangeMarker;
3613                                 _editor->range_bar_drag_rect->hide();
3614                         }
3615                         newloc = new Location(_editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags);
3616                         _editor->session()->locations()->add (newloc, true);
3617                         XMLNode &after = _editor->session()->locations()->get_state();
3618                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
3619                         _editor->commit_reversible_command ();
3620                         break;
3621                     }
3622
3623                 case CreateTransportMarker:
3624                         // popup menu to pick loop or punch
3625                         _editor->new_transport_marker_context_menu (&event->button, _item);
3626                         break;
3627                 }
3628         } else {
3629                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
3630
3631                 if (Keyboard::no_modifier_keys_pressed (&event->button) && _operation != CreateCDMarker) {
3632
3633                         nframes64_t start;
3634                         nframes64_t end;
3635
3636                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
3637
3638                         if (end == max_frames) {
3639                                 end = _editor->session()->current_end_frame ();
3640                         }
3641
3642                         if (start == max_frames) {
3643                                 start = _editor->session()->current_start_frame ();
3644                         }
3645
3646                         switch (_editor->mouse_mode) {
3647                         case MouseObject:
3648                                 /* find the two markers on either side and then make the selection from it */
3649                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set);
3650                                 break;
3651
3652                         case MouseRange:
3653                                 /* find the two markers on either side of the click and make the range out of it */
3654                                 _editor->selection->set (start, end);
3655                                 break;
3656
3657                         default:
3658                                 break;
3659                         }
3660                 }
3661         }
3662
3663         _editor->stop_canvas_autoscroll ();
3664 }
3665
3666 void
3667 RangeMarkerBarDrag::aborted ()
3668 {
3669         /* XXX: TODO */
3670 }
3671
3672 void
3673 RangeMarkerBarDrag::update_item (Location* location)
3674 {
3675         double const x1 = _editor->frame_to_pixel (location->start());
3676         double const x2 = _editor->frame_to_pixel (location->end());
3677
3678         _drag_rect->property_x1() = x1;
3679         _drag_rect->property_x2() = x2;
3680 }
3681
3682 void
3683 MouseZoomDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3684 {
3685         Drag::start_grab (event, _editor->zoom_cursor);
3686         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3687 }
3688
3689 void
3690 MouseZoomDrag::motion (GdkEvent* event, bool first_move)
3691 {
3692         nframes64_t start;
3693         nframes64_t end;
3694
3695         nframes64_t const pf = adjusted_current_frame (event);
3696
3697         nframes64_t grab = grab_frame ();
3698         _editor->snap_to_with_modifier (grab, event);
3699
3700         /* base start and end on initial click position */
3701         if (pf < grab) {
3702                 start = pf;
3703                 end = grab;
3704         } else {
3705                 end = pf;
3706                 start = grab;
3707         }
3708
3709         if (start != end) {
3710
3711                 if (first_move) {
3712                         _editor->zoom_rect->show();
3713                         _editor->zoom_rect->raise_to_top();
3714                 }
3715
3716                 _editor->reposition_zoom_rect(start, end);
3717
3718                 _editor->show_verbose_time_cursor (pf, 10);
3719         }
3720 }
3721
3722 void
3723 MouseZoomDrag::finished (GdkEvent* event, bool movement_occurred)
3724 {
3725         if (movement_occurred) {
3726                 motion (event, false);
3727
3728                 if (grab_frame() < last_pointer_frame()) {
3729                         _editor->temporal_zoom_by_frame (grab_frame(), last_pointer_frame(), "mouse zoom");
3730                 } else {
3731                         _editor->temporal_zoom_by_frame (last_pointer_frame(), grab_frame(), "mouse zoom");
3732                 }
3733         } else {
3734                 _editor->temporal_zoom_to_frame (false, grab_frame());
3735                 /*
3736                 temporal_zoom_step (false);
3737                 center_screen (grab_frame());
3738                 */
3739         }
3740
3741         _editor->zoom_rect->hide();
3742 }
3743
3744 void
3745 MouseZoomDrag::aborted ()
3746 {
3747         _editor->zoom_rect->hide ();
3748 }
3749
3750 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
3751         : Drag (e, i)
3752 {
3753         CanvasNoteEvent*     cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3754         region = &cnote->region_view();
3755 }
3756
3757 void
3758 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3759 {
3760         Drag::start_grab (event);
3761
3762         drag_delta_x = 0;
3763         drag_delta_note = 0;
3764
3765         double event_x;
3766         double event_y;
3767
3768         event_x = _drags->current_pointer_x();
3769         event_y = _drags->current_pointer_y();
3770
3771         _item->property_parent().get_value()->w2i(event_x, event_y);
3772
3773         last_x = region->snap_to_pixel(event_x);
3774         last_y = event_y;
3775
3776         CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3777
3778         if (!(was_selected = cnote->selected())) {
3779
3780                 /* tertiary-click means extend selection - we'll do that on button release,
3781                    so don't add it here, because otherwise we make it hard to figure
3782                    out the "extend-to" range.
3783                 */
3784
3785                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
3786
3787                 if (!extend) {
3788                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
3789
3790                         if (add) {
3791                                 region->note_selected (cnote, true);
3792                         } else {
3793                                 region->unique_select (cnote);
3794                         }
3795                 }
3796         }
3797 }
3798
3799 void
3800 NoteDrag::motion (GdkEvent*, bool)
3801 {
3802         MidiStreamView* streamview = region->midi_stream_view();
3803         double event_x;
3804         double event_y;
3805
3806         event_x = _drags->current_pointer_x();
3807         event_y = _drags->current_pointer_y();
3808
3809         _item->property_parent().get_value()->w2i(event_x, event_y);
3810
3811         event_x = region->snap_to_pixel(event_x);
3812
3813         double dx     = event_x - last_x;
3814         double dy     = event_y - last_y;
3815         last_x = event_x;
3816
3817         drag_delta_x += dx;
3818
3819         // Snap to note rows
3820
3821         if (abs (dy) < streamview->note_height()) {
3822                 dy = 0.0;
3823         } else {
3824                 int8_t this_delta_note;
3825                 if (dy > 0) {
3826                         this_delta_note = (int8_t)ceil(dy / streamview->note_height() / 2.0);
3827                 } else {
3828                         this_delta_note = (int8_t)floor(dy / streamview->note_height() / 2.0);
3829                 }
3830                 drag_delta_note -= this_delta_note;
3831                 dy = streamview->note_height() * this_delta_note;
3832                 last_y = last_y + dy;
3833         }
3834
3835         if (dx || dy) {
3836
3837                 CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3838                 Evoral::MusicalTime new_time;
3839
3840                 if (drag_delta_x) {
3841                         nframes64_t start_frames = region->beats_to_frames(cnote->note()->time());
3842                         if (drag_delta_x >= 0) {
3843                                 start_frames += region->snap_frame_to_frame(_editor->pixel_to_frame(drag_delta_x));
3844                         } else {
3845                                 start_frames -= region->snap_frame_to_frame(_editor->pixel_to_frame(-drag_delta_x));
3846                         }
3847                         new_time = region->frames_to_beats(start_frames);
3848                 } else {
3849                         new_time = cnote->note()->time();
3850                 }
3851
3852                 boost::shared_ptr<Evoral::Note<Evoral::MusicalTime> > check_note (
3853                         new Evoral::Note<Evoral::MusicalTime> (cnote->note()->channel(),
3854                                                                new_time,
3855                                                                cnote->note()->length(),
3856                                                                cnote->note()->note() + drag_delta_note,
3857                                                                cnote->note()->velocity()));
3858
3859                 region->move_selection (dx, dy);
3860
3861                 char buf[12];
3862                 snprintf (buf, sizeof (buf), "%s (%d)", Evoral::midi_note_name (cnote->note()->note()).c_str(),
3863                           (int) floor ((cnote->note()->note() + drag_delta_note)));
3864                 _editor->show_verbose_canvas_cursor_with (buf);
3865         }
3866 }
3867
3868 void
3869 NoteDrag::finished (GdkEvent* ev, bool moved)
3870 {
3871         ArdourCanvas::CanvasNote* cnote = dynamic_cast<ArdourCanvas::CanvasNote*>(_item);
3872
3873         if (!moved) {
3874                 if (_editor->current_mouse_mode() == Editing::MouseObject) {
3875
3876                         if (was_selected) {
3877                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3878                                 if (add) {
3879                                         region->note_deselected (cnote);
3880                                 }
3881                         } else {
3882                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
3883                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3884
3885                                 if (!extend && !add && region->selection_size() > 1) {
3886                                         region->unique_select(cnote);
3887                                 } else if (extend) {
3888                                         region->note_selected (cnote, true, true);
3889                                 } else {
3890                                         /* it was added during button press */
3891                                 }
3892                         }
3893                 }
3894         } else {
3895                 region->note_dropped (cnote, drag_delta_x, drag_delta_note);
3896         }
3897 }
3898
3899 void
3900 NoteDrag::aborted ()
3901 {
3902         /* XXX: TODO */
3903 }
3904
3905 AutomationRangeDrag::AutomationRangeDrag (Editor* e, ArdourCanvas::Item* i, list<AudioRange> const & r)
3906         : Drag (e, i)
3907         , _ranges (r)
3908         , _nothing_to_drag (false)
3909 {
3910         _atav = reinterpret_cast<AutomationTimeAxisView*> (_item->get_data ("trackview"));
3911         assert (_atav);
3912
3913         _line = _atav->line ();
3914 }
3915
3916 void
3917 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3918 {
3919         Drag::start_grab (event, cursor);
3920
3921         list<ControlPoint*> points;
3922
3923         XMLNode* state = &_line->get_state ();
3924
3925         if (_ranges.empty()) {
3926
3927                 uint32_t const N = _line->npoints ();
3928                 for (uint32_t i = 0; i < N; ++i) {
3929                         points.push_back (_line->nth (i));
3930                 }
3931
3932         } else {
3933
3934                 boost::shared_ptr<AutomationList> the_list = _line->the_list ();
3935                 for (list<AudioRange>::const_iterator j = _ranges.begin(); j != _ranges.end(); ++j) {
3936
3937                         /* fade into and out of the region that we're dragging;
3938                            64 samples length plucked out of thin air.
3939                         */
3940                         nframes64_t const h = (j->start + j->end) / 2;
3941                         nframes64_t a = j->start + 64;
3942                         if (a > h) {
3943                                 a = h;
3944                         }
3945                         nframes64_t b = j->end - 64;
3946                         if (b < h) {
3947                                 b = h;
3948                         }
3949
3950                         the_list->add (j->start, the_list->eval (j->start));
3951                         _line->add_always_in_view (j->start);
3952                         the_list->add (a, the_list->eval (a));
3953                         _line->add_always_in_view (a);
3954                         the_list->add (b, the_list->eval (b));
3955                         _line->add_always_in_view (b);
3956                         the_list->add (j->end, the_list->eval (j->end));
3957                         _line->add_always_in_view (j->end);
3958                 }
3959
3960                 uint32_t const N = _line->npoints ();
3961                 for (uint32_t i = 0; i < N; ++i) {
3962
3963                         ControlPoint* p = _line->nth (i);
3964
3965                         list<AudioRange>::const_iterator j = _ranges.begin ();
3966                         while (j != _ranges.end() && (j->start >= (*p->model())->when || j->end <= (*p->model())->when)) {
3967                                 ++j;
3968                         }
3969
3970                         if (j != _ranges.end()) {
3971                                 points.push_back (p);
3972                         }
3973                 }
3974         }
3975
3976         if (points.empty()) {
3977                 _nothing_to_drag = true;
3978                 return;
3979         }
3980
3981         _line->start_drag_multiple (points, 1 - (_drags->current_pointer_y() / _line->height ()), state);
3982 }
3983
3984 void
3985 AutomationRangeDrag::motion (GdkEvent* event, bool first_move)
3986 {
3987         if (_nothing_to_drag) {
3988                 return;
3989         }
3990
3991         float const f = 1 - (_drags->current_pointer_y() / _line->height());
3992
3993         /* we are ignoring x position for this drag, so we can just pass in anything */
3994         _line->drag_motion (0, f, true, false);
3995 }
3996
3997 void
3998 AutomationRangeDrag::finished (GdkEvent* event, bool)
3999 {
4000         if (_nothing_to_drag) {
4001                 return;
4002         }
4003
4004         motion (event, false);
4005         _line->end_drag ();
4006         _line->clear_always_in_view ();
4007 }
4008
4009 void
4010 AutomationRangeDrag::aborted ()
4011 {
4012         _line->clear_always_in_view ();
4013         _line->reset ();
4014 }
4015
4016 DraggingView::DraggingView (RegionView* v)
4017         : view (v)
4018 {
4019         initial_y = v->get_canvas_group()->property_y ();
4020 }