src/wx/timeline.cc

   1 /*
   2     Copyright (C) 2013-2021 Carl Hetherington <cth@carlh.net>
   3
   4     This file is part of DCP-o-matic.
   5
   6     DCP-o-matic is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     DCP-o-matic is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
  18
  19 */
  20
  21 #include "content_panel.h"
  22 #include "film_editor.h"
  23 #include "film_viewer.h"
  24 #include "timeline.h"
  25 #include "timeline_atmos_content_view.h"
  26 #include "timeline_audio_content_view.h"
  27 #include "timeline_labels_view.h"
  28 #include "timeline_reels_view.h"
  29 #include "timeline_text_content_view.h"
  30 #include "timeline_time_axis_view.h"
  31 #include "timeline_video_content_view.h"
  32 #include "wx_util.h"
  33 #include "lib/atmos_mxf_content.h"
  34 #include "lib/audio_content.h"
  35 #include "lib/film.h"
  36 #include "lib/image_content.h"
  37 #include "lib/playlist.h"
  38 #include "lib/scope_guard.h"
  39 #include "lib/text_content.h"
  40 #include "lib/timer.h"
  41 #include "lib/video_content.h"
  42 #include <dcp/warnings.h>
  43 LIBDCP_DISABLE_WARNINGS
  44 #include <wx/graphics.h>
  45 LIBDCP_ENABLE_WARNINGS
  46 #include <iterator>
  47 #include <list>
  48
  49
  50 using std::abs;
  51 using std::dynamic_pointer_cast;
  52 using std::list;
  53 using std::make_shared;
  54 using std::max;
  55 using std::min;
  56 using std::shared_ptr;
  57 using std::weak_ptr;
  58 using boost::bind;
  59 using boost::optional;
  60 using namespace dcpomatic;
  61 #if BOOST_VERSION >= 106100
  62 using namespace boost::placeholders;
  63 #endif
  64
  65
  66 /* 3 hours in 640 pixels */
  67 double const Timeline::_minimum_pixels_per_second = 640.0 / (60 * 60 * 3);
  68 int const Timeline::_minimum_pixels_per_track = 16;
  69
  70
  71 Timeline::Timeline(wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film, FilmViewer& viewer)
  72         : wxPanel (parent, wxID_ANY)
  73         , _labels_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  74         , _main_canvas (new wxScrolledCanvas (this, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE))
  75         , _content_panel (cp)
  76         , _film (film)
  77         , _viewer (viewer)
  78         , _time_axis_view (new TimelineTimeAxisView (*this, 64))
  79         , _reels_view (new TimelineReelsView (*this, 32))
  80         , _labels_view (new TimelineLabelsView (*this))
  81         , _tracks (0)
  82         , _left_down (false)
  83         , _down_view_position (0)
  84         , _first_move (false)
  85         , _menu (this, viewer)
  86         , _snap (true)
  87         , _tool (SELECT)
  88         , _x_scroll_rate (16)
  89         , _y_scroll_rate (16)
  90         , _pixels_per_track (48)
  91         , _first_resize (true)
  92         , _timer (this)
  93 {
  94 #ifndef __WXOSX__
  95         _labels_canvas->SetDoubleBuffered (true);
  96         _main_canvas->SetDoubleBuffered (true);
  97 #endif
  98
  99         auto sizer = new wxBoxSizer (wxHORIZONTAL);
 100         sizer->Add (_labels_canvas, 0, wxEXPAND);
 101         _labels_canvas->SetMinSize (wxSize (_labels_view->bbox().width, -1));
 102         sizer->Add (_main_canvas, 1, wxEXPAND);
 103         SetSizer (sizer);
 104
 105         _labels_canvas->Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint_labels, this));
 106         _main_canvas->Bind   (wxEVT_PAINT,      boost::bind (&Timeline::paint_main,   this));
 107         _main_canvas->Bind   (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,    this, _1));
 108         _main_canvas->Bind   (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,      this, _1));
 109         _main_canvas->Bind   (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,   this, _1));
 110         _main_canvas->Bind   (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved,  this, _1));
 111         _main_canvas->Bind   (wxEVT_SIZE,       boost::bind (&Timeline::resized,      this));
 112         _main_canvas->Bind   (wxEVT_SCROLLWIN_TOP,        boost::bind (&Timeline::scrolled,     this, _1));
 113         _main_canvas->Bind   (wxEVT_SCROLLWIN_BOTTOM,     boost::bind (&Timeline::scrolled,     this, _1));
 114         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 115         _main_canvas->Bind   (wxEVT_SCROLLWIN_LINEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 116         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEUP,     boost::bind (&Timeline::scrolled,     this, _1));
 117         _main_canvas->Bind   (wxEVT_SCROLLWIN_PAGEDOWN,   boost::bind (&Timeline::scrolled,     this, _1));
 118         _main_canvas->Bind   (wxEVT_SCROLLWIN_THUMBTRACK, boost::bind (&Timeline::scrolled,     this, _1));
 119
 120         film_change (ChangeType::DONE, Film::Property::CONTENT);
 121
 122         SetMinSize (wxSize (640, 4 * pixels_per_track() + 96));
 123
 124         _film_changed_connection = film->Change.connect (bind (&Timeline::film_change, this, _1, _2));
 125         _film_content_change_connection = film->ContentChange.connect (bind (&Timeline::film_content_change, this, _1, _3, _4));
 126
 127         Bind (wxEVT_TIMER, boost::bind(&Timeline::update_playhead, this));
 128         _timer.Start (200, wxTIMER_CONTINUOUS);
 129
 130         setup_scrollbars ();
 131         _labels_canvas->ShowScrollbars (wxSHOW_SB_NEVER, wxSHOW_SB_NEVER);
 132 }
 133
 134
 135 void
 136 Timeline::update_playhead ()
 137 {
 138         Refresh ();
 139 }
 140
 141
 142 void
 143 Timeline::set_pixels_per_second (double pps)
 144 {
 145         _pixels_per_second = max (_minimum_pixels_per_second, pps);
 146 }
 147
 148
 149 void
 150 Timeline::paint_labels ()
 151 {
 152         wxPaintDC dc (_labels_canvas);
 153
 154         auto film = _film.lock();
 155         if (film->content().empty()) {
 156                 return;
 157         }
 158
 159         auto gc = wxGraphicsContext::Create (dc);
 160         if (!gc) {
 161                 return;
 162         }
 163
 164         ScopeGuard sg = [gc]() { delete gc; };
 165
 166         int vsx, vsy;
 167         _labels_canvas->GetViewStart (&vsx, &vsy);
 168         gc->Translate (-vsx * _x_scroll_rate, -vsy * _y_scroll_rate + tracks_y_offset());
 169
 170         _labels_view->paint (gc, {});
 171 }
 172
 173
 174 void
 175 Timeline::paint_main ()
 176 {
 177         wxPaintDC dc (_main_canvas);
 178
 179         auto film = _film.lock();
 180         if (film->content().empty()) {
 181                 return;
 182         }
 183
 184         _main_canvas->DoPrepareDC (dc);
 185
 186         auto gc = wxGraphicsContext::Create (dc);
 187         if (!gc) {
 188                 return;
 189         }
 190
 191         ScopeGuard sg = [gc]() { delete gc; };
 192
 193         gc->SetAntialiasMode (wxANTIALIAS_DEFAULT);
 194
 195         for (auto i: _views) {
 196
 197                 auto ic = dynamic_pointer_cast<TimelineContentView> (i);
 198
 199                 /* Find areas of overlap with other content views, so that we can plot them */
 200                 list<dcpomatic::Rect<int>> overlaps;
 201                 for (auto j: _views) {
 202                         auto jc = dynamic_pointer_cast<TimelineContentView> (j);
 203                         /* No overlap with non-content views, views on different tracks, audio views or non-active views */
 204                         if (!ic || !jc || i == j || ic->track() != jc->track() || ic->track().get_value_or(2) >= 2 || !ic->active() || !jc->active()) {
 205                                 continue;
 206                         }
 207
 208                         auto r = j->bbox().intersection(i->bbox());
 209                         if (r) {
 210                                 overlaps.push_back (r.get ());
 211                         }
 212                 }
 213
 214                 i->paint (gc, overlaps);
 215         }
 216
 217         if (_zoom_point) {
 218                 gc->SetPen(gui_is_dark() ? *wxWHITE_PEN : *wxBLACK_PEN);
 219                 gc->SetBrush (*wxTRANSPARENT_BRUSH);
 220                 gc->DrawRectangle (
 221                         min (_down_point.x, _zoom_point->x),
 222                         min (_down_point.y, _zoom_point->y),
 223                         abs (_down_point.x - _zoom_point->x),
 224                         abs (_down_point.y - _zoom_point->y)
 225                         );
 226         }
 227
 228         /* Playhead */
 229
 230         gc->SetPen (*wxRED_PEN);
 231         auto path = gc->CreatePath ();
 232         double const ph = _viewer.position().seconds() * pixels_per_second().get_value_or(0);
 233         path.MoveToPoint (ph, 0);
 234         path.AddLineToPoint (ph, pixels_per_track() * _tracks + 32);
 235         gc->StrokePath (path);
 236 }
 237
 238
 239 void
 240 Timeline::film_change (ChangeType type, Film::Property p)
 241 {
 242         if (type != ChangeType::DONE) {
 243                 return;
 244         }
 245
 246         if (p == Film::Property::CONTENT || p == Film::Property::REEL_TYPE || p == Film::Property::REEL_LENGTH) {
 247                 ensure_ui_thread ();
 248                 recreate_views ();
 249         } else if (p == Film::Property::CONTENT_ORDER) {
 250                 Refresh ();
 251         }
 252 }
 253
 254
 255 void
 256 Timeline::recreate_views ()
 257 {
 258         auto film = _film.lock ();
 259         if (!film) {
 260                 return;
 261         }
 262
 263         _views.clear ();
 264         _views.push_back (_time_axis_view);
 265         _views.push_back (_reels_view);
 266
 267         for (auto i: film->content ()) {
 268                 if (i->video) {
 269                         _views.push_back (make_shared<TimelineVideoContentView>(*this, i));
 270                 }
 271
 272                 if (i->audio && !i->audio->mapping().mapped_output_channels().empty ()) {
 273                         _views.push_back (make_shared<TimelineAudioContentView>(*this, i));
 274                 }
 275
 276                 for (auto j: i->text) {
 277                         _views.push_back (make_shared<TimelineTextContentView>(*this, i, j));
 278                 }
 279
 280                 if (i->atmos) {
 281                         _views.push_back (make_shared<TimelineAtmosContentView>(*this, i));
 282                 }
 283         }
 284
 285         assign_tracks ();
 286         setup_scrollbars ();
 287         Refresh ();
 288 }
 289
 290
 291 void
 292 Timeline::film_content_change (ChangeType type, int property, bool frequent)
 293 {
 294         if (type != ChangeType::DONE) {
 295                 return;
 296         }
 297
 298         ensure_ui_thread ();
 299
 300         if (property == AudioContentProperty::STREAMS || property == VideoContentProperty::FRAME_TYPE) {
 301                 recreate_views ();
 302         } else if (property == ContentProperty::POSITION || property == ContentProperty::LENGTH) {
 303                 _reels_view->force_redraw ();
 304         } else if (!frequent) {
 305                 setup_scrollbars ();
 306                 Refresh ();
 307         }
 308 }
 309
 310
 311 template <class T>
 312 int
 313 place (shared_ptr<const Film> film, TimelineViewList& views, int& tracks)
 314 {
 315         int const base = tracks;
 316
 317         for (auto i: views) {
 318                 if (!dynamic_pointer_cast<T>(i)) {
 319                         continue;
 320                 }
 321
 322                 auto cv = dynamic_pointer_cast<TimelineContentView> (i);
 323
 324                 int t = base;
 325
 326                 auto content = cv->content();
 327                 DCPTimePeriod const content_period = content->period(film);
 328
 329                 while (true) {
 330                         auto j = views.begin();
 331                         while (j != views.end()) {
 332                                 auto test = dynamic_pointer_cast<T> (*j);
 333                                 if (!test) {
 334                                         ++j;
 335                                         continue;
 336                                 }
 337
 338                                 auto test_content = test->content();
 339                                 if (
 340                                         test->track() && test->track().get() == t &&
 341                                         content_period.overlap(test_content->period(film))
 342                                    ) {
 343                                         /* we have an overlap on track `t' */
 344                                         ++t;
 345                                         break;
 346                                 }
 347
 348                                 ++j;
 349                         }
 350
 351                         if (j == views.end ()) {
 352                                 /* no overlap on `t' */
 353                                 break;
 354                         }
 355                 }
 356
 357                 cv->set_track (t);
 358                 tracks = max (tracks, t + 1);
 359         }
 360
 361         return tracks - base;
 362 }
 363
 364
 365 /** Compare the mapped output channels of two TimelineViews, so we can into
 366  *  order of first mapped DCP channel.
 367  */
 368 struct AudioMappingComparator {
 369         bool operator()(shared_ptr<TimelineView> a, shared_ptr<TimelineView> b) {
 370                 int la = -1;
 371                 auto cva = dynamic_pointer_cast<TimelineAudioContentView>(a);
 372                 if (cva) {
 373                         auto oc = cva->content()->audio->mapping().mapped_output_channels();
 374                         la = *min_element(boost::begin(oc), boost::end(oc));
 375                 }
 376                 int lb = -1;
 377                 auto cvb = dynamic_pointer_cast<TimelineAudioContentView>(b);
 378                 if (cvb) {
 379                         auto oc = cvb->content()->audio->mapping().mapped_output_channels();
 380                         lb = *min_element(boost::begin(oc), boost::end(oc));
 381                 }
 382                 return la < lb;
 383         }
 384 };
 385
 386
 387 void
 388 Timeline::assign_tracks ()
 389 {
 390         /* Tracks are:
 391            Video 1
 392            Video 2
 393            Video N
 394            Text 1
 395            Text 2
 396            Text N
 397            Atmos
 398            Audio 1
 399            Audio 2
 400            Audio N
 401         */
 402
 403         auto film = _film.lock ();
 404         DCPOMATIC_ASSERT (film);
 405
 406         _tracks = 0;
 407
 408         for (auto i: _views) {
 409                 auto c = dynamic_pointer_cast<TimelineContentView>(i);
 410                 if (c) {
 411                         c->unset_track ();
 412                 }
 413         }
 414
 415         int const video_tracks = place<TimelineVideoContentView> (film, _views, _tracks);
 416         int const text_tracks = place<TimelineTextContentView> (film, _views, _tracks);
 417
 418         /* Atmos */
 419
 420         bool have_atmos = false;
 421         for (auto i: _views) {
 422                 auto cv = dynamic_pointer_cast<TimelineAtmosContentView>(i);
 423                 if (cv) {
 424                         cv->set_track (_tracks);
 425                         have_atmos = true;
 426                 }
 427         }
 428
 429         if (have_atmos) {
 430                 ++_tracks;
 431         }
 432
 433         /* Audio.  We're sorting the views so that we get the audio views in order of increasing
 434            DCP channel index.
 435         */
 436
 437         auto views = _views;
 438         sort(views.begin(), views.end(), AudioMappingComparator());
 439         int const audio_tracks = place<TimelineAudioContentView> (film, views, _tracks);
 440
 441         _labels_view->set_video_tracks (video_tracks);
 442         _labels_view->set_audio_tracks (audio_tracks);
 443         _labels_view->set_text_tracks (text_tracks);
 444         _labels_view->set_atmos (have_atmos);
 445
 446         _time_axis_view->set_y (tracks());
 447         _reels_view->set_y (8);
 448 }
 449
 450
 451 int
 452 Timeline::tracks () const
 453 {
 454         return _tracks;
 455 }
 456
 457
 458 void
 459 Timeline::setup_scrollbars ()
 460 {
 461         auto film = _film.lock ();
 462         if (!film || !_pixels_per_second) {
 463                 return;
 464         }
 465
 466         int const h = tracks() * pixels_per_track() + tracks_y_offset() + _time_axis_view->bbox().height;
 467
 468         _labels_canvas->SetVirtualSize (_labels_view->bbox().width, h);
 469         _labels_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 470         _main_canvas->SetVirtualSize (*_pixels_per_second * film->length().seconds(), h);
 471         _main_canvas->SetScrollRate (_x_scroll_rate, _y_scroll_rate);
 472 }
 473
 474
 475 shared_ptr<TimelineView>
 476 Timeline::event_to_view (wxMouseEvent& ev)
 477 {
 478         /* Search backwards through views so that we find the uppermost one first */
 479         auto i = _views.rbegin();
 480
 481         int vsx, vsy;
 482         _main_canvas->GetViewStart (&vsx, &vsy);
 483         Position<int> const p (ev.GetX() + vsx * _x_scroll_rate, ev.GetY() + vsy * _y_scroll_rate);
 484
 485         while (i != _views.rend() && !(*i)->bbox().contains (p)) {
 486                 ++i;
 487         }
 488
 489         if (i == _views.rend ()) {
 490                 return {};
 491         }
 492
 493         return *i;
 494 }
 495
 496
 497 void
 498 Timeline::left_down (wxMouseEvent& ev)
 499 {
 500         _left_down = true;
 501         _down_point = ev.GetPosition ();
 502
 503         switch (_tool) {
 504         case SELECT:
 505                 left_down_select (ev);
 506                 break;
 507         case ZOOM:
 508         case ZOOM_ALL:
 509         case SNAP:
 510         case SEQUENCE:
 511                 /* Nothing to do */
 512                 break;
 513         }
 514 }
 515
 516
 517 void
 518 Timeline::left_down_select (wxMouseEvent& ev)
 519 {
 520         auto view = event_to_view (ev);
 521         auto content_view = dynamic_pointer_cast<TimelineContentView>(view);
 522
 523         _down_view.reset ();
 524
 525         if (content_view) {
 526                 _down_view = content_view;
 527                 _down_view_position = content_view->content()->position ();
 528         }
 529
 530         if (dynamic_pointer_cast<TimelineTimeAxisView>(view)) {
 531                 int vsx, vsy;
 532                 _main_canvas->GetViewStart(&vsx, &vsy);
 533                 _viewer.seek(DCPTime::from_seconds((ev.GetPosition().x + vsx * _x_scroll_rate) / _pixels_per_second.get_value_or(1)), true);
 534         }
 535
 536         for (auto i: _views) {
 537                 auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 538                 if (!cv) {
 539                         continue;
 540                 }
 541
 542                 if (!ev.ShiftDown ()) {
 543                         cv->set_selected (view == i);
 544                 }
 545         }
 546
 547         if (content_view && ev.ShiftDown ()) {
 548                 content_view->set_selected (!content_view->selected ());
 549         }
 550
 551         _first_move = false;
 552
 553         if (_down_view) {
 554                 /* Pre-compute the points that we might snap to */
 555                 for (auto i: _views) {
 556                         auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 557                         if (!cv || cv == _down_view || cv->content() == _down_view->content()) {
 558                                 continue;
 559                         }
 560
 561                         auto film = _film.lock ();
 562                         DCPOMATIC_ASSERT (film);
 563
 564                         _start_snaps.push_back (cv->content()->position());
 565                         _end_snaps.push_back (cv->content()->position());
 566                         _start_snaps.push_back (cv->content()->end(film));
 567                         _end_snaps.push_back (cv->content()->end(film));
 568
 569                         for (auto i: cv->content()->reel_split_points(film)) {
 570                                 _start_snaps.push_back (i);
 571                         }
 572                 }
 573
 574                 /* Tell everyone that things might change frequently during the drag */
 575                 _down_view->content()->set_change_signals_frequent (true);
 576         }
 577 }
 578
 579
 580 void
 581 Timeline::left_up (wxMouseEvent& ev)
 582 {
 583         _left_down = false;
 584
 585         switch (_tool) {
 586         case SELECT:
 587                 left_up_select (ev);
 588                 break;
 589         case ZOOM:
 590                 left_up_zoom (ev);
 591                 break;
 592         case ZOOM_ALL:
 593         case SNAP:
 594         case SEQUENCE:
 595                 break;
 596         }
 597 }
 598
 599
 600 void
 601 Timeline::left_up_select (wxMouseEvent& ev)
 602 {
 603         if (_down_view) {
 604                 _down_view->content()->set_change_signals_frequent (false);
 605         }
 606
 607         _content_panel->set_selection (selected_content ());
 608         /* Since we may have just set change signals back to `not-frequent', we have to
 609            make sure this position change is signalled, even if the position value has
 610            not changed since the last time it was set (with frequent=true).  This is
 611            a bit of a hack.
 612         */
 613         set_position_from_event (ev, true);
 614
 615         /* Clear up up the stuff we don't do during drag */
 616         assign_tracks ();
 617         setup_scrollbars ();
 618         Refresh ();
 619
 620         _start_snaps.clear ();
 621         _end_snaps.clear ();
 622 }
 623
 624
 625 void
 626 Timeline::left_up_zoom (wxMouseEvent& ev)
 627 {
 628         _zoom_point = ev.GetPosition ();
 629
 630         int vsx, vsy;
 631         _main_canvas->GetViewStart (&vsx, &vsy);
 632
 633         wxPoint top_left(min(_down_point.x, _zoom_point->x), min(_down_point.y, _zoom_point->y));
 634         wxPoint bottom_right(max(_down_point.x, _zoom_point->x), max(_down_point.y, _zoom_point->y));
 635
 636         if ((bottom_right.x - top_left.x) < 8 || (bottom_right.y - top_left.y) < 8) {
 637                 /* Very small zoom rectangle: we assume it wasn't intentional */
 638                 _zoom_point = optional<wxPoint> ();
 639                 Refresh ();
 640                 return;
 641         }
 642
 643         auto const time_left = DCPTime::from_seconds((top_left.x + vsx) / *_pixels_per_second);
 644         auto const time_right = DCPTime::from_seconds((bottom_right.x + vsx) / *_pixels_per_second);
 645         set_pixels_per_second (double(GetSize().GetWidth()) / (time_right.seconds() - time_left.seconds()));
 646
 647         double const tracks_top = double(top_left.y - tracks_y_offset()) / _pixels_per_track;
 648         double const tracks_bottom = double(bottom_right.y - tracks_y_offset()) / _pixels_per_track;
 649         set_pixels_per_track (lrint(GetSize().GetHeight() / (tracks_bottom - tracks_top)));
 650
 651         setup_scrollbars ();
 652         int const y = (tracks_top * _pixels_per_track + tracks_y_offset()) / _y_scroll_rate;
 653         _main_canvas->Scroll (time_left.seconds() * *_pixels_per_second / _x_scroll_rate, y);
 654         _labels_canvas->Scroll (0, y);
 655
 656         _zoom_point = optional<wxPoint> ();
 657         Refresh ();
 658 }
 659
 660
 661 void
 662 Timeline::set_pixels_per_track (int h)
 663 {
 664         _pixels_per_track = max(_minimum_pixels_per_track, h);
 665 }
 666
 667
 668 void
 669 Timeline::mouse_moved (wxMouseEvent& ev)
 670 {
 671         switch (_tool) {
 672         case SELECT:
 673                 mouse_moved_select (ev);
 674                 break;
 675         case ZOOM:
 676                 mouse_moved_zoom (ev);
 677                 break;
 678         case ZOOM_ALL:
 679         case SNAP:
 680         case SEQUENCE:
 681                 break;
 682         }
 683 }
 684
 685
 686 void
 687 Timeline::mouse_moved_select (wxMouseEvent& ev)
 688 {
 689         if (!_left_down) {
 690                 return;
 691         }
 692
 693         set_position_from_event (ev);
 694 }
 695
 696
 697 void
 698 Timeline::mouse_moved_zoom (wxMouseEvent& ev)
 699 {
 700         if (!_left_down) {
 701                 return;
 702         }
 703
 704         _zoom_point = ev.GetPosition ();
 705         Refresh ();
 706 }
 707
 708
 709 void
 710 Timeline::right_down (wxMouseEvent& ev)
 711 {
 712         switch (_tool) {
 713         case SELECT:
 714                 right_down_select (ev);
 715                 break;
 716         case ZOOM:
 717                 /* Zoom out */
 718                 set_pixels_per_second (*_pixels_per_second / 2);
 719                 set_pixels_per_track (_pixels_per_track / 2);
 720                 setup_scrollbars ();
 721                 Refresh ();
 722                 break;
 723         case ZOOM_ALL:
 724         case SNAP:
 725         case SEQUENCE:
 726                 break;
 727         }
 728 }
 729
 730
 731 void
 732 Timeline::right_down_select (wxMouseEvent& ev)
 733 {
 734         auto view = event_to_view (ev);
 735         auto cv = dynamic_pointer_cast<TimelineContentView> (view);
 736         if (!cv) {
 737                 return;
 738         }
 739
 740         if (!cv->selected ()) {
 741                 clear_selection ();
 742                 cv->set_selected (true);
 743         }
 744
 745         _menu.popup (_film, selected_content (), selected_views (), ev.GetPosition ());
 746 }
 747
 748
 749 void
 750 Timeline::maybe_snap (DCPTime a, DCPTime b, optional<DCPTime>& nearest_distance) const
 751 {
 752         auto const d = a - b;
 753         if (!nearest_distance || d.abs() < nearest_distance.get().abs()) {
 754                 nearest_distance = d;
 755         }
 756 }
 757
 758
 759 void
 760 Timeline::set_position_from_event (wxMouseEvent& ev, bool force_emit)
 761 {
 762         if (!_pixels_per_second) {
 763                 return;
 764         }
 765
 766         double const pps = _pixels_per_second.get ();
 767
 768         auto const p = ev.GetPosition();
 769
 770         if (!_first_move) {
 771                 /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
 772                    before the drag is considered to have started.
 773                 */
 774                 int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
 775                 if (dist < 8) {
 776                         return;
 777                 }
 778                 _first_move = true;
 779         }
 780
 781         if (!_down_view) {
 782                 return;
 783         }
 784
 785         auto new_position = _down_view_position + DCPTime::from_seconds ((p.x - _down_point.x) / pps);
 786
 787         auto film = _film.lock ();
 788         DCPOMATIC_ASSERT (film);
 789
 790         if (_snap) {
 791                 auto const new_end = new_position + _down_view->content()->length_after_trim(film);
 792                 /* Signed `distance' to nearest thing (i.e. negative is left on the timeline,
 793                    positive is right).
 794                 */
 795                 optional<DCPTime> nearest_distance;
 796
 797                 /* Find the nearest snap point */
 798
 799                 for (auto i: _start_snaps) {
 800                         maybe_snap (i, new_position, nearest_distance);
 801                 }
 802
 803                 for (auto i: _end_snaps) {
 804                         maybe_snap (i, new_end, nearest_distance);
 805                 }
 806
 807                 if (nearest_distance) {
 808                         /* Snap if it's close; `close' means within a proportion of the time on the timeline */
 809                         if (nearest_distance.get().abs() < DCPTime::from_seconds ((width() / pps) / 64)) {
 810                                 new_position += nearest_distance.get ();
 811                         }
 812                 }
 813         }
 814
 815         if (new_position < DCPTime ()) {
 816                 new_position = DCPTime ();
 817         }
 818
 819         _down_view->content()->set_position (film, new_position, force_emit);
 820
 821         film->set_sequence (false);
 822 }
 823
 824
 825 void
 826 Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 827 {
 828         _main_canvas->RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 829 }
 830
 831
 832 shared_ptr<const Film>
 833 Timeline::film () const
 834 {
 835         return _film.lock ();
 836 }
 837
 838
 839 void
 840 Timeline::resized ()
 841 {
 842         if (_main_canvas->GetSize().GetWidth() > 0 && _first_resize) {
 843                 zoom_all ();
 844                 _first_resize = false;
 845         }
 846         setup_scrollbars ();
 847 }
 848
 849
 850 void
 851 Timeline::clear_selection ()
 852 {
 853         for (auto i: _views) {
 854                 shared_ptr<TimelineContentView> cv = dynamic_pointer_cast<TimelineContentView>(i);
 855                 if (cv) {
 856                         cv->set_selected (false);
 857                 }
 858         }
 859 }
 860
 861
 862 TimelineContentViewList
 863 Timeline::selected_views () const
 864 {
 865         TimelineContentViewList sel;
 866
 867         for (auto i: _views) {
 868                 auto cv = dynamic_pointer_cast<TimelineContentView>(i);
 869                 if (cv && cv->selected()) {
 870                         sel.push_back (cv);
 871                 }
 872         }
 873
 874         return sel;
 875 }
 876
 877
 878 ContentList
 879 Timeline::selected_content () const
 880 {
 881         ContentList sel;
 882
 883         for (auto i: selected_views()) {
 884                 sel.push_back(i->content());
 885         }
 886
 887         return sel;
 888 }
 889
 890
 891 void
 892 Timeline::set_selection (ContentList selection)
 893 {
 894         for (auto i: _views) {
 895                 auto cv = dynamic_pointer_cast<TimelineContentView> (i);
 896                 if (cv) {
 897                         cv->set_selected (find (selection.begin(), selection.end(), cv->content ()) != selection.end ());
 898                 }
 899         }
 900 }
 901
 902
 903 int
 904 Timeline::tracks_y_offset () const
 905 {
 906         return _reels_view->bbox().height + 4;
 907 }
 908
 909
 910 int
 911 Timeline::width () const
 912 {
 913         return _main_canvas->GetVirtualSize().GetWidth();
 914 }
 915
 916
 917 void
 918 Timeline::scrolled (wxScrollWinEvent& ev)
 919 {
 920         if (ev.GetOrientation() == wxVERTICAL) {
 921                 int x, y;
 922                 _main_canvas->GetViewStart (&x, &y);
 923                 _labels_canvas->Scroll (0, y);
 924         }
 925         ev.Skip ();
 926 }
 927
 928
 929 void
 930 Timeline::tool_clicked (Tool t)
 931 {
 932         switch (t) {
 933         case ZOOM:
 934         case SELECT:
 935                 _tool = t;
 936                 break;
 937         case ZOOM_ALL:
 938                 zoom_all ();
 939                 break;
 940         case SNAP:
 941         case SEQUENCE:
 942                 break;
 943         }
 944 }
 945
 946
 947 void
 948 Timeline::zoom_all ()
 949 {
 950         auto film = _film.lock ();
 951         DCPOMATIC_ASSERT (film);
 952         set_pixels_per_second ((_main_canvas->GetSize().GetWidth() - 32) / film->length().seconds());
 953         set_pixels_per_track ((_main_canvas->GetSize().GetHeight() - tracks_y_offset() - _time_axis_view->bbox().height - 32) / _tracks);
 954         setup_scrollbars ();
 955         _main_canvas->Scroll (0, 0);
 956         _labels_canvas->Scroll (0, 0);
 957         Refresh ();
 958 }
 959
 960
 961 void
 962 Timeline::keypress(wxKeyEvent const& event)
 963 {
 964         if (event.GetKeyCode() == WXK_DELETE) {
 965                 auto film = _film.lock();
 966                 DCPOMATIC_ASSERT(film);
 967                 film->remove_content(selected_content());
 968         } else {
 969                 switch (event.GetRawKeyCode()) {
 970                 case '+':
 971                         set_pixels_per_second(_pixels_per_second.get_value_or(1) * 2);
 972                         break;
 973                 case '-':
 974                         set_pixels_per_second(_pixels_per_second.get_value_or(1) / 2);
 975                         break;
 976                 }
 977         }
 978 }
 979