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() && _was_rolling && _stop) {
2114                         _editor->session()->request_stop ();
2115                 }
2116
2117                 if (_editor->session() && _editor->session()->is_auditioning()) {
2118                         _editor->session()->cancel_audition ();
2119                 }
2120         }
2121
2122         _pointer_frame_offset = grab_frame() - _cursor->current_frame;
2123
2124         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2125 }
2126
2127 void
2128 CursorDrag::motion (GdkEvent* event, bool)
2129 {
2130         nframes64_t const adjusted_frame = adjusted_current_frame (event);
2131
2132         if (adjusted_frame == last_pointer_frame()) {
2133                 return;
2134         }
2135
2136         _cursor->set_position (adjusted_frame);
2137
2138         _editor->show_verbose_time_cursor (_cursor->current_frame, 10);
2139
2140         if (_editor->session() && _item == &_editor->playhead_cursor->canvas_item) {
2141                 _editor->session()->request_locate (_editor->playhead_cursor->current_frame, false);
2142                 _editor->_pending_locate_request = true;
2143         }
2144
2145
2146 #ifdef GTKOSX
2147         _editor->update_canvas_now ();
2148 #endif
2149         _editor->UpdateAllTransportClocks (_cursor->current_frame);
2150 }
2151
2152 void
2153 CursorDrag::finished (GdkEvent* event, bool movement_occurred)
2154 {
2155         _editor->_dragging_playhead = false;
2156
2157         if (!movement_occurred && _stop) {
2158                 return;
2159         }
2160
2161         motion (event, false);
2162
2163         if (_item == &_editor->playhead_cursor->canvas_item) {
2164                 if (_editor->session()) {
2165                         _editor->session()->request_locate (_editor->playhead_cursor->current_frame, _was_rolling);
2166                         _editor->_pending_locate_request = true;
2167                 }
2168         }
2169 }
2170
2171 void
2172 CursorDrag::aborted ()
2173 {
2174         _editor->_dragging_playhead = false;
2175         _cursor->set_position (adjusted_frame (grab_frame (), 0, false));
2176 }
2177
2178 FadeInDrag::FadeInDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2179         : RegionDrag (e, i, p, v)
2180 {
2181
2182 }
2183
2184 void
2185 FadeInDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2186 {
2187         Drag::start_grab (event, cursor);
2188
2189         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2190         boost::shared_ptr<AudioRegion> const r = a->audio_region ();
2191
2192         _pointer_frame_offset = grab_frame() - ((nframes64_t) r->fade_in()->back()->when + r->position());
2193         _editor->show_verbose_duration_cursor (r->position(), r->position() + r->fade_in()->back()->when, 10);
2194
2195 }
2196
2197 void
2198 FadeInDrag::motion (GdkEvent* event, bool)
2199 {
2200         nframes64_t fade_length;
2201
2202         nframes64_t const pos = adjusted_current_frame (event);
2203
2204         boost::shared_ptr<Region> region = _primary->region ();
2205
2206         if (pos < (region->position() + 64)) {
2207                 fade_length = 64; // this should be a minimum defined somewhere
2208         } else if (pos > region->last_frame()) {
2209                 fade_length = region->length();
2210         } else {
2211                 fade_length = pos - region->position();
2212         }
2213
2214         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2215
2216                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2217
2218                 if (!tmp) {
2219                         continue;
2220                 }
2221
2222                 tmp->reset_fade_in_shape_width (fade_length);
2223         }
2224
2225         _editor->show_verbose_duration_cursor (region->position(), region->position() + fade_length, 10);
2226 }
2227
2228 void
2229 FadeInDrag::finished (GdkEvent* event, bool movement_occurred)
2230 {
2231         if (!movement_occurred) {
2232                 return;
2233         }
2234
2235         nframes64_t fade_length;
2236
2237         nframes64_t const pos = adjusted_current_frame (event);
2238
2239         boost::shared_ptr<Region> region = _primary->region ();
2240
2241         if (pos < (region->position() + 64)) {
2242                 fade_length = 64; // this should be a minimum defined somewhere
2243         } else if (pos > region->last_frame()) {
2244                 fade_length = region->length();
2245         } else {
2246                 fade_length = pos - region->position();
2247         }
2248
2249         _editor->begin_reversible_command (_("change fade in length"));
2250
2251         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2252
2253                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2254
2255                 if (!tmp) {
2256                         continue;
2257                 }
2258
2259                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_in();
2260                 XMLNode &before = alist->get_state();
2261
2262                 tmp->audio_region()->set_fade_in_length (fade_length);
2263                 tmp->audio_region()->set_fade_in_active (true);
2264
2265                 XMLNode &after = alist->get_state();
2266                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2267         }
2268
2269         _editor->commit_reversible_command ();
2270 }
2271
2272 void
2273 FadeInDrag::aborted ()
2274 {
2275         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2276                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2277
2278                 if (!tmp) {
2279                         continue;
2280                 }
2281
2282                 tmp->reset_fade_in_shape_width (tmp->audio_region()->fade_in()->back()->when);
2283         }
2284 }
2285
2286 FadeOutDrag::FadeOutDrag (Editor* e, ArdourCanvas::Item* i, RegionView* p, list<RegionView*> const & v)
2287         : RegionDrag (e, i, p, v)
2288 {
2289
2290 }
2291
2292 void
2293 FadeOutDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2294 {
2295         Drag::start_grab (event, cursor);
2296
2297         AudioRegionView* a = dynamic_cast<AudioRegionView*> (_primary);
2298         boost::shared_ptr<AudioRegion> r = a->audio_region ();
2299
2300         _pointer_frame_offset = grab_frame() - (r->length() - (nframes64_t) r->fade_out()->back()->when + r->position());
2301         _editor->show_verbose_duration_cursor (r->last_frame() - r->fade_out()->back()->when, r->last_frame(), 10);
2302 }
2303
2304 void
2305 FadeOutDrag::motion (GdkEvent* event, bool)
2306 {
2307         nframes64_t fade_length;
2308
2309         nframes64_t const pos = adjusted_current_frame (event);
2310
2311         boost::shared_ptr<Region> region = _primary->region ();
2312
2313         if (pos > (region->last_frame() - 64)) {
2314                 fade_length = 64; // this should really be a minimum fade defined somewhere
2315         }
2316         else if (pos < region->position()) {
2317                 fade_length = region->length();
2318         }
2319         else {
2320                 fade_length = region->last_frame() - pos;
2321         }
2322
2323         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2324
2325                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2326
2327                 if (!tmp) {
2328                         continue;
2329                 }
2330
2331                 tmp->reset_fade_out_shape_width (fade_length);
2332         }
2333
2334         _editor->show_verbose_duration_cursor (region->last_frame() - fade_length, region->last_frame(), 10);
2335 }
2336
2337 void
2338 FadeOutDrag::finished (GdkEvent* event, bool movement_occurred)
2339 {
2340         if (!movement_occurred) {
2341                 return;
2342         }
2343
2344         nframes64_t fade_length;
2345
2346         nframes64_t const pos = adjusted_current_frame (event);
2347
2348         boost::shared_ptr<Region> region = _primary->region ();
2349
2350         if (pos > (region->last_frame() - 64)) {
2351                 fade_length = 64; // this should really be a minimum fade defined somewhere
2352         }
2353         else if (pos < region->position()) {
2354                 fade_length = region->length();
2355         }
2356         else {
2357                 fade_length = region->last_frame() - pos;
2358         }
2359
2360         _editor->begin_reversible_command (_("change fade out length"));
2361
2362         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2363
2364                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2365
2366                 if (!tmp) {
2367                         continue;
2368                 }
2369
2370                 boost::shared_ptr<AutomationList> alist = tmp->audio_region()->fade_out();
2371                 XMLNode &before = alist->get_state();
2372
2373                 tmp->audio_region()->set_fade_out_length (fade_length);
2374                 tmp->audio_region()->set_fade_out_active (true);
2375
2376                 XMLNode &after = alist->get_state();
2377                 _editor->session()->add_command(new MementoCommand<AutomationList>(*alist.get(), &before, &after));
2378         }
2379
2380         _editor->commit_reversible_command ();
2381 }
2382
2383 void
2384 FadeOutDrag::aborted ()
2385 {
2386         for (list<DraggingView>::iterator i = _views.begin(); i != _views.end(); ++i) {
2387                 AudioRegionView* tmp = dynamic_cast<AudioRegionView*> (i->view);
2388
2389                 if (!tmp) {
2390                         continue;
2391                 }
2392
2393                 tmp->reset_fade_out_shape_width (tmp->audio_region()->fade_out()->back()->when);
2394         }
2395 }
2396
2397 MarkerDrag::MarkerDrag (Editor* e, ArdourCanvas::Item* i)
2398         : Drag (e, i)
2399 {
2400         _marker = reinterpret_cast<Marker*> (_item->get_data ("marker"));
2401         assert (_marker);
2402
2403         _points.push_back (Gnome::Art::Point (0, 0));
2404         _points.push_back (Gnome::Art::Point (0, _editor->physical_screen_height));
2405
2406         _line = new ArdourCanvas::Line (*_editor->timebar_group);
2407         _line->property_width_pixels() = 1;
2408         _line->property_points () = _points;
2409         _line->hide ();
2410
2411         _line->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_MarkerDragLine.get();
2412 }
2413
2414 MarkerDrag::~MarkerDrag ()
2415 {
2416         for (list<Location*>::iterator i = _copied_locations.begin(); i != _copied_locations.end(); ++i) {
2417                 delete *i;
2418         }
2419 }
2420
2421 void
2422 MarkerDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
2423 {
2424         Drag::start_grab (event, cursor);
2425
2426         bool is_start;
2427
2428         Location *location = _editor->find_location_from_marker (_marker, is_start);
2429         _editor->_dragging_edit_point = true;
2430
2431         _pointer_frame_offset = grab_frame() - (is_start ? location->start() : location->end());
2432
2433         update_item (location);
2434
2435         // _drag_line->show();
2436         // _line->raise_to_top();
2437
2438         if (is_start) {
2439                 _editor->show_verbose_time_cursor (location->start(), 10);
2440         } else {
2441                 _editor->show_verbose_time_cursor (location->end(), 10);
2442         }
2443
2444         Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2445
2446         switch (op) {
2447         case Selection::Toggle:
2448                 _editor->selection->toggle (_marker);
2449                 break;
2450         case Selection::Set:
2451                 if (!_editor->selection->selected (_marker)) {
2452                         _editor->selection->set (_marker);
2453                 }
2454                 break;
2455         case Selection::Extend:
2456         {
2457                 Locations::LocationList ll;
2458                 list<Marker*> to_add;
2459                 nframes64_t s, e;
2460                 _editor->selection->markers.range (s, e);
2461                 s = min (_marker->position(), s);
2462                 e = max (_marker->position(), e);
2463                 s = min (s, e);
2464                 e = max (s, e);
2465                 if (e < max_frames) {
2466                         ++e;
2467                 }
2468                 _editor->session()->locations()->find_all_between (s, e, ll, Location::Flags (0));
2469                 for (Locations::LocationList::iterator i = ll.begin(); i != ll.end(); ++i) {
2470                         Editor::LocationMarkers* lm = _editor->find_location_markers (*i);
2471                         if (lm) {
2472                                 if (lm->start) {
2473                                         to_add.push_back (lm->start);
2474                                 }
2475                                 if (lm->end) {
2476                                         to_add.push_back (lm->end);
2477                                 }
2478                         }
2479                 }
2480                 if (!to_add.empty()) {
2481                         _editor->selection->add (to_add);
2482                 }
2483                 break;
2484         }
2485         case Selection::Add:
2486                 _editor->selection->add (_marker);
2487                 break;
2488         }
2489
2490         /* Set up copies for us to manipulate during the drag */
2491
2492         for (MarkerSelection::iterator i = _editor->selection->markers.begin(); i != _editor->selection->markers.end(); ++i) {
2493                 Location* l = _editor->find_location_from_marker (*i, is_start);
2494                 _copied_locations.push_back (new Location (*l));
2495         }
2496 }
2497
2498 void
2499 MarkerDrag::motion (GdkEvent* event, bool)
2500 {
2501         nframes64_t f_delta = 0;
2502         bool is_start;
2503         bool move_both = false;
2504         Marker* marker;
2505         Location *real_location;
2506         Location *copy_location = 0;
2507
2508         nframes64_t const newframe = adjusted_current_frame (event);
2509
2510         nframes64_t next = newframe;
2511
2512         if (newframe == last_pointer_frame()) {
2513                 return;
2514         }
2515
2516         if (Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier)) {
2517                 move_both = true;
2518         }
2519
2520         MarkerSelection::iterator i;
2521         list<Location*>::iterator x;
2522
2523         /* find the marker we're dragging, and compute the delta */
2524
2525         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2526              x != _copied_locations.end() && i != _editor->selection->markers.end();
2527              ++i, ++x) {
2528
2529                 copy_location = *x;
2530                 marker = *i;
2531
2532                 if (marker == _marker) {
2533
2534                         if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2535                                 /* que pasa ?? */
2536                                 return;
2537                         }
2538
2539                         if (real_location->is_mark()) {
2540                                 f_delta = newframe - copy_location->start();
2541                         } else {
2542
2543
2544                                 switch (marker->type()) {
2545                                 case Marker::Start:
2546                                 case Marker::LoopStart:
2547                                 case Marker::PunchIn:
2548                                         f_delta = newframe - copy_location->start();
2549                                         break;
2550
2551                                 case Marker::End:
2552                                 case Marker::LoopEnd:
2553                                 case Marker::PunchOut:
2554                                         f_delta = newframe - copy_location->end();
2555                                         break;
2556                                 default:
2557                                         /* what kind of marker is this ? */
2558                                         return;
2559                                 }
2560                         }
2561                         break;
2562                 }
2563         }
2564
2565         if (i == _editor->selection->markers.end()) {
2566                 /* hmm, impossible - we didn't find the dragged marker */
2567                 return;
2568         }
2569
2570         /* now move them all */
2571
2572         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2573              x != _copied_locations.end() && i != _editor->selection->markers.end();
2574              ++i, ++x) {
2575
2576                 copy_location = *x;
2577                 marker = *i;
2578
2579                 /* call this to find out if its the start or end */
2580
2581                 if ((real_location = _editor->find_location_from_marker (marker, is_start)) == 0) {
2582                         continue;
2583                 }
2584
2585                 if (real_location->locked()) {
2586                         continue;
2587                 }
2588
2589                 if (copy_location->is_mark()) {
2590
2591                         /* now move it */
2592
2593                         copy_location->set_start (copy_location->start() + f_delta);
2594
2595                 } else {
2596
2597                         nframes64_t new_start = copy_location->start() + f_delta;
2598                         nframes64_t new_end = copy_location->end() + f_delta;
2599
2600                         if (is_start) { // start-of-range marker
2601
2602                                 if (move_both) {
2603                                         copy_location->set_start (new_start);
2604                                         copy_location->set_end (new_end);
2605                                 } else  if (new_start < copy_location->end()) {
2606                                         copy_location->set_start (new_start);
2607                                 } else {
2608                                         _editor->snap_to (next, 1, true);
2609                                         copy_location->set_end (next);
2610                                         copy_location->set_start (newframe);
2611                                 }
2612
2613                         } else { // end marker
2614
2615                                 if (move_both) {
2616                                         copy_location->set_end (new_end);
2617                                         copy_location->set_start (new_start);
2618                                 } else if (new_end > copy_location->start()) {
2619                                         copy_location->set_end (new_end);
2620                                 } else if (newframe > 0) {
2621                                         _editor->snap_to (next, -1, true);
2622                                         copy_location->set_start (next);
2623                                         copy_location->set_end (newframe);
2624                                 }
2625                         }
2626                 }
2627
2628                 update_item (copy_location);
2629
2630                 Editor::LocationMarkers* lm = _editor->find_location_markers (real_location);
2631
2632                 if (lm) {
2633                         lm->set_position (copy_location->start(), copy_location->end());
2634                 }
2635         }
2636
2637         assert (!_copied_locations.empty());
2638
2639         _editor->show_verbose_time_cursor (newframe, 10);
2640
2641 #ifdef GTKOSX
2642         _editor->update_canvas_now ();
2643 #endif
2644 }
2645
2646 void
2647 MarkerDrag::finished (GdkEvent* event, bool movement_occurred)
2648 {
2649         if (!movement_occurred) {
2650
2651                 /* just a click, do nothing but finish
2652                    off the selection process
2653                 */
2654
2655                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
2656
2657                 switch (op) {
2658                 case Selection::Set:
2659                         if (_editor->selection->selected (_marker) && _editor->selection->markers.size() > 1) {
2660                                 _editor->selection->set (_marker);
2661                         }
2662                         break;
2663
2664                 case Selection::Toggle:
2665                 case Selection::Extend:
2666                 case Selection::Add:
2667                         break;
2668                 }
2669
2670                 return;
2671         }
2672
2673         _editor->_dragging_edit_point = false;
2674
2675         _editor->begin_reversible_command ( _("move marker") );
2676         XMLNode &before = _editor->session()->locations()->get_state();
2677
2678         MarkerSelection::iterator i;
2679         list<Location*>::iterator x;
2680         bool is_start;
2681
2682         for (i = _editor->selection->markers.begin(), x = _copied_locations.begin();
2683              x != _copied_locations.end() && i != _editor->selection->markers.end();
2684              ++i, ++x) {
2685
2686                 Location * location = _editor->find_location_from_marker (*i, is_start);
2687
2688                 if (location) {
2689
2690                         if (location->locked()) {
2691                                 return;
2692                         }
2693
2694                         if (location->is_mark()) {
2695                                 location->set_start ((*x)->start());
2696                         } else {
2697                                 location->set ((*x)->start(), (*x)->end());
2698                         }
2699                 }
2700         }
2701
2702         XMLNode &after = _editor->session()->locations()->get_state();
2703         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
2704         _editor->commit_reversible_command ();
2705
2706         _line->hide();
2707 }
2708
2709 void
2710 MarkerDrag::aborted ()
2711 {
2712         /* XXX: TODO */
2713 }
2714
2715 void
2716 MarkerDrag::update_item (Location* location)
2717 {
2718         double const x1 = _editor->frame_to_pixel (location->start());
2719
2720         _points.front().set_x(x1);
2721         _points.back().set_x(x1);
2722         _line->property_points() = _points;
2723 }
2724
2725 ControlPointDrag::ControlPointDrag (Editor* e, ArdourCanvas::Item* i)
2726         : Drag (e, i),
2727           _cumulative_x_drag (0),
2728           _cumulative_y_drag (0)
2729 {
2730         _point = reinterpret_cast<ControlPoint*> (_item->get_data ("control_point"));
2731         assert (_point);
2732 }
2733
2734
2735 void
2736 ControlPointDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2737 {
2738         Drag::start_grab (event, _editor->fader_cursor);
2739
2740         // start the grab at the center of the control point so
2741         // the point doesn't 'jump' to the mouse after the first drag
2742         _time_axis_view_grab_x = _point->get_x();
2743         _time_axis_view_grab_y = _point->get_y();
2744
2745         float const fraction = 1 - (_point->get_y() / _point->line().height());
2746
2747         _point->line().start_drag_single (_point, _time_axis_view_grab_x, fraction);
2748
2749         _editor->set_verbose_canvas_cursor (_point->line().get_verbose_cursor_string (fraction),
2750                                             event->button.x + 10, event->button.y + 10);
2751
2752         _editor->show_verbose_canvas_cursor ();
2753 }
2754
2755 void
2756 ControlPointDrag::motion (GdkEvent* event, bool)
2757 {
2758         double dx = _drags->current_pointer_x() - last_pointer_x();
2759         double dy = _drags->current_pointer_y() - last_pointer_y();
2760
2761         if (event->button.state & Keyboard::SecondaryModifier) {
2762                 dx *= 0.1;
2763                 dy *= 0.1;
2764         }
2765
2766         /* coordinate in TimeAxisView's space */
2767         double cx = _time_axis_view_grab_x + _cumulative_x_drag + dx;
2768         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2769
2770         // calculate zero crossing point. back off by .01 to stay on the
2771         // positive side of zero
2772         double const zero_gain_y = (1.0 - _zero_gain_fraction) * _point->line().height() - .01;
2773
2774         // make sure we hit zero when passing through
2775         if ((cy < zero_gain_y && (cy - dy) > zero_gain_y) || (cy > zero_gain_y && (cy - dy) < zero_gain_y)) {
2776                 cy = zero_gain_y;
2777         }
2778
2779         if (_x_constrained) {
2780                 cx = _time_axis_view_grab_x;
2781         }
2782         if (_y_constrained) {
2783                 cy = _time_axis_view_grab_y;
2784         }
2785
2786         _cumulative_x_drag = cx - _time_axis_view_grab_x;
2787         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2788
2789         cx = max (0.0, cx);
2790         cy = max (0.0, cy);
2791         cy = min ((double) _point->line().height(), cy);
2792
2793         nframes64_t cx_frames = _editor->unit_to_frame (cx);
2794
2795         if (!_x_constrained) {
2796                 _editor->snap_to_with_modifier (cx_frames, event);
2797         }
2798
2799         float const fraction = 1.0 - (cy / _point->line().height());
2800
2801         bool const push = Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier);
2802
2803         _point->line().drag_motion (_editor->frame_to_unit (cx_frames), fraction, false, push);
2804
2805         _editor->set_verbose_canvas_cursor_text (_point->line().get_verbose_cursor_string (fraction));
2806 }
2807
2808 void
2809 ControlPointDrag::finished (GdkEvent* event, bool movement_occurred)
2810 {
2811         if (!movement_occurred) {
2812
2813                 /* just a click */
2814
2815                 if ((event->type == GDK_BUTTON_RELEASE) && (event->button.button == 1) && Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
2816                         _editor->reset_point_selection ();
2817                 }
2818
2819         } else {
2820                 motion (event, false);
2821         }
2822         _point->line().end_drag ();
2823 }
2824
2825 void
2826 ControlPointDrag::aborted ()
2827 {
2828         _point->line().reset ();
2829 }
2830
2831 bool
2832 ControlPointDrag::active (Editing::MouseMode m)
2833 {
2834         if (m == Editing::MouseGain) {
2835                 /* always active in mouse gain */
2836                 return true;
2837         }
2838
2839         /* otherwise active if the point is on an automation line (ie not if its on a region gain line) */
2840         return dynamic_cast<AutomationLine*> (&(_point->line())) != 0;
2841 }
2842
2843 LineDrag::LineDrag (Editor* e, ArdourCanvas::Item* i)
2844         : Drag (e, i),
2845           _line (0),
2846           _cumulative_y_drag (0)
2847 {
2848
2849 }
2850 void
2851 LineDrag::start_grab (GdkEvent* event, Gdk::Cursor* /*cursor*/)
2852 {
2853         _line = reinterpret_cast<AutomationLine*> (_item->get_data ("line"));
2854         assert (_line);
2855
2856         _item = &_line->grab_item ();
2857
2858         /* need to get x coordinate in terms of parent (TimeAxisItemView)
2859            origin, and ditto for y.
2860         */
2861
2862         double cx = event->button.x;
2863         double cy = event->button.y;
2864
2865         _line->parent_group().w2i (cx, cy);
2866
2867         nframes64_t const frame_within_region = (nframes64_t) floor (cx * _editor->frames_per_unit);
2868
2869         uint32_t before;
2870         uint32_t after;
2871
2872         if (!_line->control_points_adjacent (frame_within_region, before, after)) {
2873                 /* no adjacent points */
2874                 return;
2875         }
2876
2877         Drag::start_grab (event, _editor->fader_cursor);
2878
2879         /* store grab start in parent frame */
2880
2881         _time_axis_view_grab_x = cx;
2882         _time_axis_view_grab_y = cy;
2883
2884         double fraction = 1.0 - (cy / _line->height());
2885
2886         _line->start_drag_line (before, after, fraction);
2887
2888         _editor->set_verbose_canvas_cursor (_line->get_verbose_cursor_string (fraction),
2889                                             event->button.x + 10, event->button.y + 10);
2890
2891         _editor->show_verbose_canvas_cursor ();
2892 }
2893
2894 void
2895 LineDrag::motion (GdkEvent* event, bool)
2896 {
2897         double dy = _drags->current_pointer_y() - last_pointer_y();
2898
2899         if (event->button.state & Keyboard::SecondaryModifier) {
2900                 dy *= 0.1;
2901         }
2902
2903         double cy = _time_axis_view_grab_y + _cumulative_y_drag + dy;
2904
2905         _cumulative_y_drag = cy - _time_axis_view_grab_y;
2906
2907         cy = max (0.0, cy);
2908         cy = min ((double) _line->height(), cy);
2909
2910         double const fraction = 1.0 - (cy / _line->height());
2911
2912         bool push;
2913
2914         if (Keyboard::modifier_state_contains (event->button.state, Keyboard::PrimaryModifier)) {
2915                 push = false;
2916         } else {
2917                 push = true;
2918         }
2919
2920         /* we are ignoring x position for this drag, so we can just pass in anything */
2921         _line->drag_motion (0, fraction, true, push);
2922
2923         _editor->set_verbose_canvas_cursor_text (_line->get_verbose_cursor_string (fraction));
2924 }
2925
2926 void
2927 LineDrag::finished (GdkEvent* event, bool)
2928 {
2929         motion (event, false);
2930         _line->end_drag ();
2931 }
2932
2933 void
2934 LineDrag::aborted ()
2935 {
2936         _line->reset ();
2937 }
2938
2939 void
2940 RubberbandSelectDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
2941 {
2942         Drag::start_grab (event);
2943         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
2944 }
2945
2946 void
2947 RubberbandSelectDrag::motion (GdkEvent* event, bool)
2948 {
2949         nframes64_t start;
2950         nframes64_t end;
2951         double y1;
2952         double y2;
2953
2954         nframes64_t const pf = adjusted_current_frame (event, Config->get_rubberbanding_snaps_to_grid ());
2955
2956         nframes64_t grab = grab_frame ();
2957         if (Config->get_rubberbanding_snaps_to_grid ()) {
2958                 _editor->snap_to_with_modifier (grab, event);
2959         }
2960
2961         /* base start and end on initial click position */
2962
2963         if (pf < grab) {
2964                 start = pf;
2965                 end = grab;
2966         } else {
2967                 end = pf;
2968                 start = grab;
2969         }
2970
2971         if (_drags->current_pointer_y() < grab_y()) {
2972                 y1 = _drags->current_pointer_y();
2973                 y2 = grab_y();
2974         } else {
2975                 y2 = _drags->current_pointer_y();
2976                 y1 = grab_y();
2977         }
2978
2979
2980         if (start != end || y1 != y2) {
2981
2982                 double x1 = _editor->frame_to_pixel (start);
2983                 double x2 = _editor->frame_to_pixel (end);
2984
2985                 _editor->rubberband_rect->property_x1() = x1;
2986                 _editor->rubberband_rect->property_y1() = y1;
2987                 _editor->rubberband_rect->property_x2() = x2;
2988                 _editor->rubberband_rect->property_y2() = y2;
2989
2990                 _editor->rubberband_rect->show();
2991                 _editor->rubberband_rect->raise_to_top();
2992
2993                 _editor->show_verbose_time_cursor (pf, 10);
2994         }
2995 }
2996
2997 void
2998 RubberbandSelectDrag::finished (GdkEvent* event, bool movement_occurred)
2999 {
3000         if (movement_occurred) {
3001
3002                 motion (event, false);
3003
3004                 double y1,y2;
3005                 if (_drags->current_pointer_y() < grab_y()) {
3006                         y1 = _drags->current_pointer_y();
3007                         y2 = grab_y();
3008                 } else {
3009                         y2 = _drags->current_pointer_y();
3010                         y1 = grab_y();
3011                 }
3012
3013
3014                 Selection::Operation op = ArdourKeyboard::selection_type (event->button.state);
3015                 bool committed;
3016
3017                 _editor->begin_reversible_command (_("rubberband selection"));
3018
3019                 if (grab_frame() < last_pointer_frame()) {
3020                         committed = _editor->select_all_within (grab_frame(), last_pointer_frame() - 1, y1, y2, _editor->track_views, op);
3021                 } else {
3022                         committed = _editor->select_all_within (last_pointer_frame(), grab_frame() - 1, y1, y2, _editor->track_views, op);
3023                 }
3024
3025                 if (!committed) {
3026                         _editor->commit_reversible_command ();
3027                 }
3028
3029         } else {
3030                 if (!getenv("ARDOUR_SAE")) {
3031                         _editor->selection->clear_tracks();
3032                 }
3033                 _editor->selection->clear_regions();
3034                 _editor->selection->clear_points ();
3035                 _editor->selection->clear_lines ();
3036         }
3037
3038         _editor->rubberband_rect->hide();
3039 }
3040
3041 void
3042 RubberbandSelectDrag::aborted ()
3043 {
3044         _editor->rubberband_rect->hide ();
3045 }
3046
3047 void
3048 TimeFXDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3049 {
3050         Drag::start_grab (event);
3051
3052         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3053 }
3054
3055 void
3056 TimeFXDrag::motion (GdkEvent* event, bool)
3057 {
3058         RegionView* rv = _primary;
3059
3060         nframes64_t const pf = adjusted_current_frame (event);
3061
3062         if (pf > rv->region()->position()) {
3063                 rv->get_time_axis_view().show_timestretch (rv->region()->position(), pf);
3064         }
3065
3066         _editor->show_verbose_time_cursor (pf, 10);
3067 }
3068
3069 void
3070 TimeFXDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3071 {
3072         _primary->get_time_axis_view().hide_timestretch ();
3073
3074         if (!movement_occurred) {
3075                 return;
3076         }
3077
3078         if (last_pointer_frame() < _primary->region()->position()) {
3079                 /* backwards drag of the left edge - not usable */
3080                 return;
3081         }
3082
3083         nframes64_t newlen = last_pointer_frame() - _primary->region()->position();
3084
3085         float percentage = (double) newlen / (double) _primary->region()->length();
3086
3087 #ifndef USE_RUBBERBAND
3088         // Soundtouch uses percentage / 100 instead of normal (/ 1)
3089         if (_primary->region()->data_type() == DataType::AUDIO) {
3090                 percentage = (float) ((double) newlen - (double) _primary->region()->length()) / ((double) newlen) * 100.0f;
3091         }
3092 #endif
3093
3094         _editor->begin_reversible_command (_("timestretch"));
3095
3096         // XXX how do timeFX on multiple regions ?
3097
3098         RegionSelection rs;
3099         rs.add (_primary);
3100
3101         if (_editor->time_stretch (rs, percentage) == -1) {
3102                 error << _("An error occurred while executing time stretch operation") << endmsg;
3103         }
3104 }
3105
3106 void
3107 TimeFXDrag::aborted ()
3108 {
3109         _primary->get_time_axis_view().hide_timestretch ();
3110 }
3111
3112
3113 void
3114 ScrubDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3115 {
3116         Drag::start_grab (event);
3117 }
3118
3119 void
3120 ScrubDrag::motion (GdkEvent* /*event*/, bool)
3121 {
3122         _editor->scrub (adjusted_current_frame (0, false), _drags->current_pointer_x ());
3123 }
3124
3125 void
3126 ScrubDrag::finished (GdkEvent* /*event*/, bool movement_occurred)
3127 {
3128         if (movement_occurred && _editor->session()) {
3129                 /* make sure we stop */
3130                 _editor->session()->request_transport_speed (0.0);
3131         }
3132 }
3133
3134 void
3135 ScrubDrag::aborted ()
3136 {
3137         /* XXX: TODO */
3138 }
3139
3140 SelectionDrag::SelectionDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3141         : Drag (e, i)
3142         , _operation (o)
3143         , _copy (false)
3144         , _original_pointer_time_axis (-1)
3145         , _last_pointer_time_axis (-1)
3146 {
3147
3148 }
3149
3150 void
3151 SelectionDrag::start_grab (GdkEvent* event, Gdk::Cursor*)
3152 {
3153         nframes64_t start = 0;
3154         nframes64_t end = 0;
3155
3156         if (_editor->session() == 0) {
3157                 return;
3158         }
3159
3160         Gdk::Cursor* cursor = 0;
3161
3162         switch (_operation) {
3163         case CreateSelection:
3164                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3165                         _copy = true;
3166                 } else {
3167                         _copy = false;
3168                 }
3169                 cursor = _editor->selector_cursor;
3170                 Drag::start_grab (event, cursor);
3171                 break;
3172
3173         case SelectionStartTrim:
3174                 if (_editor->clicked_axisview) {
3175                         _editor->clicked_axisview->order_selection_trims (_item, true);
3176                 }
3177                 Drag::start_grab (event, _editor->left_side_trim_cursor);
3178                 start = _editor->selection->time[_editor->clicked_selection].start;
3179                 _pointer_frame_offset = grab_frame() - start;
3180                 break;
3181
3182         case SelectionEndTrim:
3183                 if (_editor->clicked_axisview) {
3184                         _editor->clicked_axisview->order_selection_trims (_item, false);
3185                 }
3186                 Drag::start_grab (event, _editor->right_side_trim_cursor);
3187                 end = _editor->selection->time[_editor->clicked_selection].end;
3188                 _pointer_frame_offset = grab_frame() - end;
3189                 break;
3190
3191         case SelectionMove:
3192                 start = _editor->selection->time[_editor->clicked_selection].start;
3193                 Drag::start_grab (event, cursor);
3194                 _pointer_frame_offset = grab_frame() - start;
3195                 break;
3196         }
3197
3198         if (_operation == SelectionMove) {
3199                 _editor->show_verbose_time_cursor (start, 10);
3200         } else {
3201                 _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3202         }
3203
3204         _original_pointer_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ()).first->order ();
3205 }
3206
3207 void
3208 SelectionDrag::motion (GdkEvent* event, bool first_move)
3209 {
3210         nframes64_t start = 0;
3211         nframes64_t end = 0;
3212         nframes64_t length;
3213
3214         pair<TimeAxisView*, int> const pending_time_axis = _editor->trackview_by_y_position (_drags->current_pointer_y ());
3215         if (pending_time_axis.first == 0) {
3216                 return;
3217         }
3218
3219         nframes64_t const pending_position = adjusted_current_frame (event);
3220
3221         /* only alter selection if things have changed */
3222
3223         if (pending_time_axis.first->order() == _last_pointer_time_axis && pending_position == last_pointer_frame()) {
3224                 return;
3225         }
3226
3227         switch (_operation) {
3228         case CreateSelection:
3229         {
3230                 nframes64_t grab = grab_frame ();
3231
3232                 if (first_move) {
3233                         _editor->snap_to (grab);
3234                 }
3235
3236                 if (pending_position < grab_frame()) {
3237                         start = pending_position;
3238                         end = grab;
3239                 } else {
3240                         end = pending_position;
3241                         start = grab;
3242                 }
3243
3244                 /* first drag: Either add to the selection
3245                    or create a new selection
3246                 */
3247
3248                 if (first_move) {
3249
3250                         if (_copy) {
3251                                 /* adding to the selection */
3252                                 _editor->selection->add (_editor->clicked_axisview);
3253                                 _editor->clicked_selection = _editor->selection->add (start, end);
3254                                 _copy = false;
3255                         } else {
3256                                 /* new selection */
3257
3258                                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
3259                                         _editor->selection->set (_editor->clicked_axisview);
3260                                 }
3261
3262                                 _editor->clicked_selection = _editor->selection->set (start, end);
3263                         }
3264                 }
3265
3266                 /* select the track that we're in */
3267                 if (find (_added_time_axes.begin(), _added_time_axes.end(), pending_time_axis.first) == _added_time_axes.end()) {
3268                         _editor->selection->add (pending_time_axis.first);
3269                         _added_time_axes.push_back (pending_time_axis.first);
3270                 }
3271
3272                 /* deselect any tracks that this drag no longer includes, being careful to only deselect
3273                    tracks that we selected in the first place.
3274                 */
3275
3276                 int min_order = min (_original_pointer_time_axis, pending_time_axis.first->order());
3277                 int max_order = max (_original_pointer_time_axis, pending_time_axis.first->order());
3278
3279                 list<TimeAxisView*>::iterator i = _added_time_axes.begin();
3280                 while (i != _added_time_axes.end()) {
3281
3282                         list<TimeAxisView*>::iterator tmp = i;
3283                         ++tmp;
3284
3285                         if ((*i)->order() < min_order || (*i)->order() > max_order) {
3286                                 _editor->selection->remove (*i);
3287                                 _added_time_axes.remove (*i);
3288                         }
3289
3290                         i = tmp;
3291                 }
3292
3293         }
3294         break;
3295
3296         case SelectionStartTrim:
3297
3298                 start = _editor->selection->time[_editor->clicked_selection].start;
3299                 end = _editor->selection->time[_editor->clicked_selection].end;
3300
3301                 if (pending_position > end) {
3302                         start = end;
3303                 } else {
3304                         start = pending_position;
3305                 }
3306                 break;
3307
3308         case SelectionEndTrim:
3309
3310                 start = _editor->selection->time[_editor->clicked_selection].start;
3311                 end = _editor->selection->time[_editor->clicked_selection].end;
3312
3313                 if (pending_position < start) {
3314                         end = start;
3315                 } else {
3316                         end = pending_position;
3317                 }
3318
3319                 break;
3320
3321         case SelectionMove:
3322
3323                 start = _editor->selection->time[_editor->clicked_selection].start;
3324                 end = _editor->selection->time[_editor->clicked_selection].end;
3325
3326                 length = end - start;
3327
3328                 start = pending_position;
3329                 _editor->snap_to (start);
3330
3331                 end = start + length;
3332
3333                 break;
3334         }
3335
3336         if (event->button.x >= _editor->horizontal_position() + _editor->_canvas_width) {
3337                 _editor->start_canvas_autoscroll (1, 0);
3338         }
3339
3340         if (start != end) {
3341                 _editor->selection->replace (_editor->clicked_selection, start, end);
3342         }
3343
3344         if (_operation == SelectionMove) {
3345                 _editor->show_verbose_time_cursor(start, 10);
3346         } else {
3347                 _editor->show_verbose_time_cursor(pending_position, 10);
3348         }
3349 }
3350
3351 void
3352 SelectionDrag::finished (GdkEvent* event, bool movement_occurred)
3353 {
3354         Session* s = _editor->session();
3355
3356         if (movement_occurred) {
3357                 motion (event, false);
3358                 /* XXX this is not object-oriented programming at all. ick */
3359                 if (_editor->selection->time.consolidate()) {
3360                         _editor->selection->TimeChanged ();
3361                 }
3362
3363                 /* XXX what if its a music time selection? */
3364                 if (s && (s->config.get_auto_play() || (s->get_play_range() && s->transport_rolling()))) {
3365                         s->request_play_range (&_editor->selection->time, true);
3366                 }
3367
3368
3369         } else {
3370                 /* just a click, no pointer movement.*/
3371
3372                 if (Keyboard::no_modifier_keys_pressed (&event->button)) {
3373                         _editor->selection->clear_time();
3374                 }
3375
3376                 if (_editor->clicked_axisview && !_editor->selection->selected (_editor->clicked_axisview)) {
3377                         _editor->selection->set (_editor->clicked_axisview);
3378                 }
3379
3380                 if (s && s->get_play_range () && s->transport_rolling()) {
3381                         s->request_stop (false, false);
3382                 }
3383
3384         }
3385
3386         _editor->stop_canvas_autoscroll ();
3387 }
3388
3389 void
3390 SelectionDrag::aborted ()
3391 {
3392         /* XXX: TODO */
3393 }
3394
3395 RangeMarkerBarDrag::RangeMarkerBarDrag (Editor* e, ArdourCanvas::Item* i, Operation o)
3396         : Drag (e, i),
3397           _operation (o),
3398           _copy (false)
3399 {
3400         _drag_rect = new ArdourCanvas::SimpleRect (*_editor->time_line_group, 0.0, 0.0, 0.0, _editor->physical_screen_height);
3401         _drag_rect->hide ();
3402
3403         _drag_rect->property_fill_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3404         _drag_rect->property_outline_color_rgba() = ARDOUR_UI::config()->canvasvar_RangeDragRect.get();
3405 }
3406
3407 void
3408 RangeMarkerBarDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3409 {
3410         if (_editor->session() == 0) {
3411                 return;
3412         }
3413
3414         Gdk::Cursor* cursor = 0;
3415
3416         if (!_editor->temp_location) {
3417                 _editor->temp_location = new Location;
3418         }
3419
3420         switch (_operation) {
3421         case CreateRangeMarker:
3422         case CreateTransportMarker:
3423         case CreateCDMarker:
3424
3425                 if (Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier)) {
3426                         _copy = true;
3427                 } else {
3428                         _copy = false;
3429                 }
3430                 cursor = _editor->selector_cursor;
3431                 break;
3432         }
3433
3434         Drag::start_grab (event, cursor);
3435
3436         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3437 }
3438
3439 void
3440 RangeMarkerBarDrag::motion (GdkEvent* event, bool first_move)
3441 {
3442         nframes64_t start = 0;
3443         nframes64_t end = 0;
3444         ArdourCanvas::SimpleRect *crect;
3445
3446         switch (_operation) {
3447         case CreateRangeMarker:
3448                 crect = _editor->range_bar_drag_rect;
3449                 break;
3450         case CreateTransportMarker:
3451                 crect = _editor->transport_bar_drag_rect;
3452                 break;
3453         case CreateCDMarker:
3454                 crect = _editor->cd_marker_bar_drag_rect;
3455                 break;
3456         default:
3457                 cerr << "Error: unknown range marker op passed to Editor::drag_range_markerbar_op ()" << endl;
3458                 return;
3459                 break;
3460         }
3461
3462         nframes64_t const pf = adjusted_current_frame (event);
3463
3464         if (_operation == CreateRangeMarker || _operation == CreateTransportMarker || _operation == CreateCDMarker) {
3465                 nframes64_t grab = grab_frame ();
3466                 _editor->snap_to (grab);
3467
3468                 if (pf < grab_frame()) {
3469                         start = pf;
3470                         end = grab;
3471                 } else {
3472                         end = pf;
3473                         start = grab;
3474                 }
3475
3476                 /* first drag: Either add to the selection
3477                    or create a new selection.
3478                 */
3479
3480                 if (first_move) {
3481
3482                         _editor->temp_location->set (start, end);
3483
3484                         crect->show ();
3485
3486                         update_item (_editor->temp_location);
3487                         _drag_rect->show();
3488                         //_drag_rect->raise_to_top();
3489
3490                 }
3491         }
3492
3493         if (event->button.x >= _editor->horizontal_position() + _editor->_canvas_width) {
3494                 _editor->start_canvas_autoscroll (1, 0);
3495         }
3496
3497         if (start != end) {
3498                 _editor->temp_location->set (start, end);
3499
3500                 double x1 = _editor->frame_to_pixel (start);
3501                 double x2 = _editor->frame_to_pixel (end);
3502                 crect->property_x1() = x1;
3503                 crect->property_x2() = x2;
3504
3505                 update_item (_editor->temp_location);
3506         }
3507
3508         _editor->show_verbose_time_cursor (pf, 10);
3509
3510 }
3511
3512 void
3513 RangeMarkerBarDrag::finished (GdkEvent* event, bool movement_occurred)
3514 {
3515         Location * newloc = 0;
3516         string rangename;
3517         int flags;
3518
3519         if (movement_occurred) {
3520                 motion (event, false);
3521                 _drag_rect->hide();
3522
3523                 switch (_operation) {
3524                 case CreateRangeMarker:
3525                 case CreateCDMarker:
3526                     {
3527                         _editor->begin_reversible_command (_("new range marker"));
3528                         XMLNode &before = _editor->session()->locations()->get_state();
3529                         _editor->session()->locations()->next_available_name(rangename,"unnamed");
3530                         if (_operation == CreateCDMarker) {
3531                                 flags = Location::IsRangeMarker | Location::IsCDMarker;
3532                                 _editor->cd_marker_bar_drag_rect->hide();
3533                         }
3534                         else {
3535                                 flags = Location::IsRangeMarker;
3536                                 _editor->range_bar_drag_rect->hide();
3537                         }
3538                         newloc = new Location(_editor->temp_location->start(), _editor->temp_location->end(), rangename, (Location::Flags) flags);
3539                         _editor->session()->locations()->add (newloc, true);
3540                         XMLNode &after = _editor->session()->locations()->get_state();
3541                         _editor->session()->add_command(new MementoCommand<Locations>(*(_editor->session()->locations()), &before, &after));
3542                         _editor->commit_reversible_command ();
3543                         break;
3544                     }
3545
3546                 case CreateTransportMarker:
3547                         // popup menu to pick loop or punch
3548                         _editor->new_transport_marker_context_menu (&event->button, _item);
3549                         break;
3550                 }
3551         } else {
3552                 /* just a click, no pointer movement. remember that context menu stuff was handled elsewhere */
3553
3554                 if (Keyboard::no_modifier_keys_pressed (&event->button) && _operation != CreateCDMarker) {
3555
3556                         nframes64_t start;
3557                         nframes64_t end;
3558
3559                         _editor->session()->locations()->marks_either_side (grab_frame(), start, end);
3560
3561                         if (end == max_frames) {
3562                                 end = _editor->session()->current_end_frame ();
3563                         }
3564
3565                         if (start == max_frames) {
3566                                 start = _editor->session()->current_start_frame ();
3567                         }
3568
3569                         switch (_editor->mouse_mode) {
3570                         case MouseObject:
3571                                 /* find the two markers on either side and then make the selection from it */
3572                                 _editor->select_all_within (start, end, 0.0f, FLT_MAX, _editor->track_views, Selection::Set);
3573                                 break;
3574
3575                         case MouseRange:
3576                                 /* find the two markers on either side of the click and make the range out of it */
3577                                 _editor->selection->set (start, end);
3578                                 break;
3579
3580                         default:
3581                                 break;
3582                         }
3583                 }
3584         }
3585
3586         _editor->stop_canvas_autoscroll ();
3587 }
3588
3589 void
3590 RangeMarkerBarDrag::aborted ()
3591 {
3592         /* XXX: TODO */
3593 }
3594
3595 void
3596 RangeMarkerBarDrag::update_item (Location* location)
3597 {
3598         double const x1 = _editor->frame_to_pixel (location->start());
3599         double const x2 = _editor->frame_to_pixel (location->end());
3600
3601         _drag_rect->property_x1() = x1;
3602         _drag_rect->property_x2() = x2;
3603 }
3604
3605 void
3606 MouseZoomDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3607 {
3608         Drag::start_grab (event, _editor->zoom_cursor);
3609         _editor->show_verbose_time_cursor (adjusted_current_frame (event), 10);
3610 }
3611
3612 void
3613 MouseZoomDrag::motion (GdkEvent* event, bool first_move)
3614 {
3615         nframes64_t start;
3616         nframes64_t end;
3617
3618         nframes64_t const pf = adjusted_current_frame (event);
3619
3620         nframes64_t grab = grab_frame ();
3621         _editor->snap_to_with_modifier (grab, event);
3622
3623         /* base start and end on initial click position */
3624         if (pf < grab) {
3625                 start = pf;
3626                 end = grab;
3627         } else {
3628                 end = pf;
3629                 start = grab;
3630         }
3631
3632         if (start != end) {
3633
3634                 if (first_move) {
3635                         _editor->zoom_rect->show();
3636                         _editor->zoom_rect->raise_to_top();
3637                 }
3638
3639                 _editor->reposition_zoom_rect(start, end);
3640
3641                 _editor->show_verbose_time_cursor (pf, 10);
3642         }
3643 }
3644
3645 void
3646 MouseZoomDrag::finished (GdkEvent* event, bool movement_occurred)
3647 {
3648         if (movement_occurred) {
3649                 motion (event, false);
3650
3651                 if (grab_frame() < last_pointer_frame()) {
3652                         _editor->temporal_zoom_by_frame (grab_frame(), last_pointer_frame(), "mouse zoom");
3653                 } else {
3654                         _editor->temporal_zoom_by_frame (last_pointer_frame(), grab_frame(), "mouse zoom");
3655                 }
3656         } else {
3657                 _editor->temporal_zoom_to_frame (false, grab_frame());
3658                 /*
3659                 temporal_zoom_step (false);
3660                 center_screen (grab_frame());
3661                 */
3662         }
3663
3664         _editor->zoom_rect->hide();
3665 }
3666
3667 void
3668 MouseZoomDrag::aborted ()
3669 {
3670         _editor->zoom_rect->hide ();
3671 }
3672
3673 NoteDrag::NoteDrag (Editor* e, ArdourCanvas::Item* i)
3674         : Drag (e, i)
3675 {
3676         CanvasNoteEvent*     cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3677         region = &cnote->region_view();
3678 }
3679
3680 void
3681 NoteDrag::start_grab (GdkEvent* event, Gdk::Cursor *)
3682 {
3683         Drag::start_grab (event);
3684
3685         drag_delta_x = 0;
3686         drag_delta_note = 0;
3687
3688         double event_x;
3689         double event_y;
3690
3691         event_x = _drags->current_pointer_x();
3692         event_y = _drags->current_pointer_y();
3693
3694         _item->property_parent().get_value()->w2i(event_x, event_y);
3695
3696         last_x = region->snap_to_pixel(event_x);
3697         last_y = event_y;
3698
3699         CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3700
3701         if (!(was_selected = cnote->selected())) {
3702
3703                 /* tertiary-click means extend selection - we'll do that on button release,
3704                    so don't add it here, because otherwise we make it hard to figure
3705                    out the "extend-to" range.
3706                 */
3707
3708                 bool extend = Keyboard::modifier_state_equals (event->button.state, Keyboard::TertiaryModifier);
3709
3710                 if (!extend) {
3711                         bool add = Keyboard::modifier_state_equals (event->button.state, Keyboard::PrimaryModifier);
3712
3713                         if (add) {
3714                                 region->note_selected (cnote, true);
3715                         } else {
3716                                 region->unique_select (cnote);
3717                         }
3718                 }
3719         }
3720 }
3721
3722 void
3723 NoteDrag::motion (GdkEvent*, bool)
3724 {
3725         MidiStreamView* streamview = region->midi_stream_view();
3726         double event_x;
3727         double event_y;
3728
3729         event_x = _drags->current_pointer_x();
3730         event_y = _drags->current_pointer_y();
3731
3732         _item->property_parent().get_value()->w2i(event_x, event_y);
3733
3734         event_x = region->snap_to_pixel(event_x);
3735
3736         double dx     = event_x - last_x;
3737         double dy     = event_y - last_y;
3738         last_x = event_x;
3739
3740         drag_delta_x += dx;
3741
3742         // Snap to note rows
3743
3744         if (abs (dy) < streamview->note_height()) {
3745                 dy = 0.0;
3746         } else {
3747                 int8_t this_delta_note;
3748                 if (dy > 0) {
3749                         this_delta_note = (int8_t)ceil(dy / streamview->note_height() / 2.0);
3750                 } else {
3751                         this_delta_note = (int8_t)floor(dy / streamview->note_height() / 2.0);
3752                 }
3753                 drag_delta_note -= this_delta_note;
3754                 dy = streamview->note_height() * this_delta_note;
3755                 last_y = last_y + dy;
3756         }
3757
3758         if (dx || dy) {
3759
3760                 CanvasNoteEvent* cnote = dynamic_cast<CanvasNoteEvent*>(_item);
3761                 Evoral::MusicalTime new_time;
3762
3763                 if (drag_delta_x) {
3764                         nframes64_t start_frames = region->beats_to_frames(cnote->note()->time());
3765                         if (drag_delta_x >= 0) {
3766                                 start_frames += region->snap_frame_to_frame(_editor->pixel_to_frame(drag_delta_x));
3767                         } else {
3768                                 start_frames -= region->snap_frame_to_frame(_editor->pixel_to_frame(-drag_delta_x));
3769                         }
3770                         new_time = region->frames_to_beats(start_frames);
3771                 } else {
3772                         new_time = cnote->note()->time();
3773                 }
3774
3775                 boost::shared_ptr<Evoral::Note<Evoral::MusicalTime> > check_note (
3776                         new Evoral::Note<Evoral::MusicalTime> (cnote->note()->channel(),
3777                                                                new_time,
3778                                                                cnote->note()->length(),
3779                                                                cnote->note()->note() + drag_delta_note,
3780                                                                cnote->note()->velocity()));
3781
3782                 region->move_selection (dx, dy);
3783
3784                 char buf[12];
3785                 snprintf (buf, sizeof (buf), "%s (%d)", Evoral::midi_note_name (cnote->note()->note()).c_str(),
3786                           (int) floor ((cnote->note()->note() + drag_delta_note)));
3787                 _editor->show_verbose_canvas_cursor_with (buf);
3788         }
3789 }
3790
3791 void
3792 NoteDrag::finished (GdkEvent* ev, bool moved)
3793 {
3794         ArdourCanvas::CanvasNote* cnote = dynamic_cast<ArdourCanvas::CanvasNote*>(_item);
3795
3796         if (!moved) {
3797                 if (_editor->current_mouse_mode() == Editing::MouseObject) {
3798
3799                         if (was_selected) {
3800                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3801                                 if (add) {
3802                                         region->note_deselected (cnote);
3803                                 }
3804                         } else {
3805                                 bool extend = Keyboard::modifier_state_equals (ev->button.state, Keyboard::TertiaryModifier);
3806                                 bool add = Keyboard::modifier_state_equals (ev->button.state, Keyboard::PrimaryModifier);
3807
3808                                 if (!extend && !add && region->selection_size() > 1) {
3809                                         region->unique_select(cnote);
3810                                 } else if (extend) {
3811                                         region->note_selected (cnote, true, true);
3812                                 } else {
3813                                         /* it was added during button press */
3814                                 }
3815                         }
3816                 }
3817         } else {
3818                 region->note_dropped (cnote, drag_delta_x, drag_delta_note);
3819         }
3820 }
3821
3822 void
3823 NoteDrag::aborted ()
3824 {
3825         /* XXX: TODO */
3826 }
3827
3828 AutomationRangeDrag::AutomationRangeDrag (Editor* e, ArdourCanvas::Item* i, list<AudioRange> const & r)
3829         : Drag (e, i)
3830         , _ranges (r)
3831         , _nothing_to_drag (false)
3832 {
3833         _atav = reinterpret_cast<AutomationTimeAxisView*> (_item->get_data ("trackview"));
3834         assert (_atav);
3835
3836         _line = _atav->line ();
3837 }
3838
3839 void
3840 AutomationRangeDrag::start_grab (GdkEvent* event, Gdk::Cursor* cursor)
3841 {
3842         Drag::start_grab (event, cursor);
3843
3844         list<ControlPoint*> points;
3845
3846         XMLNode* state = &_line->get_state ();
3847
3848         if (_ranges.empty()) {
3849
3850                 uint32_t const N = _line->npoints ();
3851                 for (uint32_t i = 0; i < N; ++i) {
3852                         points.push_back (_line->nth (i));
3853                 }
3854
3855         } else {
3856
3857                 boost::shared_ptr<AutomationList> the_list = _line->the_list ();
3858                 for (list<AudioRange>::const_iterator j = _ranges.begin(); j != _ranges.end(); ++j) {
3859
3860                         /* fade into and out of the region that we're dragging;
3861                            64 samples length plucked out of thin air.
3862                         */
3863                         nframes64_t const h = (j->start + j->end) / 2;
3864                         nframes64_t a = j->start + 64;
3865                         if (a > h) {
3866                                 a = h;
3867                         }
3868                         nframes64_t b = j->end - 64;
3869                         if (b < h) {
3870                                 b = h;
3871                         }
3872
3873                         the_list->add (j->start, the_list->eval (j->start));
3874                         _line->add_always_in_view (j->start);
3875                         the_list->add (a, the_list->eval (a));
3876                         _line->add_always_in_view (a);
3877                         the_list->add (b, the_list->eval (b));
3878                         _line->add_always_in_view (b);
3879                         the_list->add (j->end, the_list->eval (j->end));
3880                         _line->add_always_in_view (j->end);
3881                 }
3882
3883                 uint32_t const N = _line->npoints ();
3884                 for (uint32_t i = 0; i < N; ++i) {
3885
3886                         ControlPoint* p = _line->nth (i);
3887
3888                         list<AudioRange>::const_iterator j = _ranges.begin ();
3889                         while (j != _ranges.end() && (j->start >= (*p->model())->when || j->end <= (*p->model())->when)) {
3890                                 ++j;
3891                         }
3892
3893                         if (j != _ranges.end()) {
3894                                 points.push_back (p);
3895                         }
3896                 }
3897         }
3898
3899         if (points.empty()) {
3900                 _nothing_to_drag = true;
3901                 return;
3902         }
3903
3904         _line->start_drag_multiple (points, 1 - (_drags->current_pointer_y() / _line->height ()), state);
3905 }
3906
3907 void
3908 AutomationRangeDrag::motion (GdkEvent* event, bool first_move)
3909 {
3910         if (_nothing_to_drag) {
3911                 return;
3912         }
3913
3914         float const f = 1 - (_drags->current_pointer_y() / _line->height());
3915
3916         /* we are ignoring x position for this drag, so we can just pass in anything */
3917         _line->drag_motion (0, f, true, false);
3918 }
3919
3920 void
3921 AutomationRangeDrag::finished (GdkEvent* event, bool)
3922 {
3923         if (_nothing_to_drag) {
3924                 return;
3925         }
3926
3927         motion (event, false);
3928         _line->end_drag ();
3929         _line->clear_always_in_view ();
3930 }
3931
3932 void
3933 AutomationRangeDrag::aborted ()
3934 {
3935         _line->clear_always_in_view ();
3936         _line->reset ();
3937 }
3938
3939 DraggingView::DraggingView (RegionView* v)
3940         : view (v)
3941 {
3942         initial_y = v->get_canvas_group()->property_y ();
3943 }