src/wx/timeline.cc

   1 /*
   2     Copyright (C) 2013-2014 Carl Hetherington <cth@carlh.net>
   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 #include <list>
  21 #include <wx/graphics.h>
  22 #include <boost/weak_ptr.hpp>
  23 #include "lib/film.h"
  24 #include "lib/playlist.h"
  25 #include "lib/image_content.h"
  26 #include "film_editor.h"
  27 #include "timeline.h"
  28 #include "content_panel.h"
  29 #include "wx_util.h"
  30
  31 using std::list;
  32 using std::cout;
  33 using std::max;
  34 using boost::shared_ptr;
  35 using boost::weak_ptr;
  36 using boost::dynamic_pointer_cast;
  37 using boost::bind;
  38 using boost::optional;
  39
  40 /** @class View
  41  *  @brief Parent class for components of the timeline (e.g. a piece of content or an axis).
  42  */
  43 class View : public boost::noncopyable
  44 {
  45 public:
  46         View (Timeline& t)
  47                 : _timeline (t)
  48         {
  49
  50         }
  51
  52         virtual ~View () {}
  53
  54         void paint (wxGraphicsContext* g)
  55         {
  56                 _last_paint_bbox = bbox ();
  57                 do_paint (g);
  58         }
  59
  60         void force_redraw ()
  61         {
  62                 _timeline.force_redraw (_last_paint_bbox);
  63                 _timeline.force_redraw (bbox ());
  64         }
  65
  66         virtual dcpomatic::Rect<int> bbox () const = 0;
  67
  68 protected:
  69         virtual void do_paint (wxGraphicsContext *) = 0;
  70
  71         int time_x (DCPTime t) const
  72         {
  73                 return _timeline.tracks_position().x + t.seconds() * _timeline.pixels_per_second().get_value_or (0);
  74         }
  75
  76         Timeline& _timeline;
  77
  78 private:
  79         dcpomatic::Rect<int> _last_paint_bbox;
  80 };
  81
  82
  83 /** @class ContentView
  84  *  @brief Parent class for views of pieces of content.
  85  */
  86 class ContentView : public View
  87 {
  88 public:
  89         ContentView (Timeline& tl, shared_ptr<Content> c)
  90                 : View (tl)
  91                 , _content (c)
  92                 , _selected (false)
  93         {
  94                 _content_connection = c->Changed.connect (bind (&ContentView::content_changed, this, _2, _3));
  95         }
  96
  97         dcpomatic::Rect<int> bbox () const
  98         {
  99                 assert (_track);
 100
 101                 shared_ptr<const Film> film = _timeline.film ();
 102                 shared_ptr<const Content> content = _content.lock ();
 103                 if (!film || !content) {
 104                         return dcpomatic::Rect<int> ();
 105                 }
 106
 107                 return dcpomatic::Rect<int> (
 108                         time_x (content->position ()) - 8,
 109                         y_pos (_track.get()) - 8,
 110                         content->length_after_trim().seconds() * _timeline.pixels_per_second().get_value_or(0) + 16,
 111                         _timeline.track_height() + 16
 112                         );
 113         }
 114
 115         void set_selected (bool s) {
 116                 _selected = s;
 117                 force_redraw ();
 118         }
 119
 120         bool selected () const {
 121                 return _selected;
 122         }
 123
 124         shared_ptr<Content> content () const {
 125                 return _content.lock ();
 126         }
 127
 128         void set_track (int t) {
 129                 _track = t;
 130         }
 131
 132         void unset_track () {
 133                 _track = boost::optional<int> ();
 134         }
 135
 136         optional<int> track () const {
 137                 return _track;
 138         }
 139
 140         virtual wxString type () const = 0;
 141         virtual wxColour background_colour () const = 0;
 142         virtual wxColour foreground_colour () const = 0;
 143
 144 private:
 145
 146         void do_paint (wxGraphicsContext* gc)
 147         {
 148                 assert (_track);
 149
 150                 shared_ptr<const Film> film = _timeline.film ();
 151                 shared_ptr<const Content> cont = content ();
 152                 if (!film || !cont) {
 153                         return;
 154                 }
 155
 156                 DCPTime const position = cont->position ();
 157                 DCPTime const len = cont->length_after_trim ();
 158
 159                 wxColour selected (background_colour().Red() / 2, background_colour().Green() / 2, background_colour().Blue() / 2);
 160
 161                 gc->SetPen (*wxThePenList->FindOrCreatePen (foreground_colour(), 4, wxPENSTYLE_SOLID));
 162                 if (_selected) {
 163                         gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (selected, wxBRUSHSTYLE_SOLID));
 164                 } else {
 165                         gc->SetBrush (*wxTheBrushList->FindOrCreateBrush (background_colour(), wxBRUSHSTYLE_SOLID));
 166                 }
 167
 168                 wxGraphicsPath path = gc->CreatePath ();
 169                 path.MoveToPoint    (time_x (position),       y_pos (_track.get()) + 4);
 170                 path.AddLineToPoint (time_x (position + len), y_pos (_track.get()) + 4);
 171                 path.AddLineToPoint (time_x (position + len), y_pos (_track.get() + 1) - 4);
 172                 path.AddLineToPoint (time_x (position),       y_pos (_track.get() + 1) - 4);
 173                 path.AddLineToPoint (time_x (position),       y_pos (_track.get()) + 4);
 174                 gc->StrokePath (path);
 175                 gc->FillPath (path);
 176
 177                 wxString name = wxString::Format (wxT ("%s [%s]"), std_to_wx (cont->summary()).data(), type().data());
 178                 wxDouble name_width;
 179                 wxDouble name_height;
 180                 wxDouble name_descent;
 181                 wxDouble name_leading;
 182                 gc->GetTextExtent (name, &name_width, &name_height, &name_descent, &name_leading);
 183
 184                 gc->Clip (wxRegion (time_x (position), y_pos (_track.get()), len.seconds() * _timeline.pixels_per_second().get_value_or(0), _timeline.track_height()));
 185                 gc->SetFont (gc->CreateFont (*wxNORMAL_FONT, foreground_colour ()));
 186                 gc->DrawText (name, time_x (position) + 12, y_pos (_track.get() + 1) - name_height - 4);
 187                 gc->ResetClip ();
 188         }
 189
 190         int y_pos (int t) const
 191         {
 192                 return _timeline.tracks_position().y + t * _timeline.track_height();
 193         }
 194
 195         void content_changed (int p, bool frequent)
 196         {
 197                 ensure_ui_thread ();
 198
 199                 if (p == ContentProperty::POSITION || p == ContentProperty::LENGTH) {
 200                         force_redraw ();
 201                 }
 202
 203                 if (!frequent) {
 204                         _timeline.setup_pixels_per_second ();
 205                         _timeline.Refresh ();
 206                 }
 207         }
 208
 209         boost::weak_ptr<Content> _content;
 210         optional<int> _track;
 211         bool _selected;
 212
 213         boost::signals2::scoped_connection _content_connection;
 214 };
 215
 216 class AudioContentView : public ContentView
 217 {
 218 public:
 219         AudioContentView (Timeline& tl, shared_ptr<Content> c)
 220                 : ContentView (tl, c)
 221         {}
 222
 223 private:
 224         wxString type () const
 225         {
 226                 return _("audio");
 227         }
 228
 229         wxColour background_colour () const
 230         {
 231                 return wxColour (149, 121, 232, 255);
 232         }
 233
 234         wxColour foreground_colour () const
 235         {
 236                 return wxColour (0, 0, 0, 255);
 237         }
 238 };
 239
 240 class VideoContentView : public ContentView
 241 {
 242 public:
 243         VideoContentView (Timeline& tl, shared_ptr<Content> c)
 244                 : ContentView (tl, c)
 245         {}
 246
 247 private:
 248
 249         wxString type () const
 250         {
 251                 if (dynamic_pointer_cast<ImageContent> (content ()) && content()->number_of_paths() == 1) {
 252                         return _("still");
 253                 } else {
 254                         return _("video");
 255                 }
 256         }
 257
 258         wxColour background_colour () const
 259         {
 260                 return wxColour (242, 92, 120, 255);
 261         }
 262
 263         wxColour foreground_colour () const
 264         {
 265                 return wxColour (0, 0, 0, 255);
 266         }
 267 };
 268
 269 class SubtitleContentView : public ContentView
 270 {
 271 public:
 272         SubtitleContentView (Timeline& tl, shared_ptr<SubtitleContent> c)
 273                 : ContentView (tl, c)
 274                 , _subtitle_content (c)
 275         {}
 276
 277 private:
 278         wxString type () const
 279         {
 280                 return _("subtitles");
 281         }
 282
 283         wxColour background_colour () const
 284         {
 285                 shared_ptr<SubtitleContent> sc = _subtitle_content.lock ();
 286                 if (!sc || !sc->use_subtitles ()) {
 287                         return wxColour (210, 210, 210, 128);
 288                 }
 289
 290                 return wxColour (163, 255, 154, 255);
 291         }
 292
 293         wxColour foreground_colour () const
 294         {
 295                 shared_ptr<SubtitleContent> sc = _subtitle_content.lock ();
 296                 if (!sc || !sc->use_subtitles ()) {
 297                         return wxColour (180, 180, 180, 128);
 298                 }
 299
 300                 return wxColour (0, 0, 0, 255);
 301         }
 302
 303         boost::weak_ptr<SubtitleContent> _subtitle_content;
 304 };
 305
 306 class TimeAxisView : public View
 307 {
 308 public:
 309         TimeAxisView (Timeline& tl, int y)
 310                 : View (tl)
 311                 , _y (y)
 312         {}
 313
 314         dcpomatic::Rect<int> bbox () const
 315         {
 316                 return dcpomatic::Rect<int> (0, _y - 4, _timeline.width(), 24);
 317         }
 318
 319         void set_y (int y)
 320         {
 321                 _y = y;
 322                 force_redraw ();
 323         }
 324
 325 private:
 326
 327         void do_paint (wxGraphicsContext* gc)
 328         {
 329                 if (!_timeline.pixels_per_second()) {
 330                         return;
 331                 }
 332
 333                 double const pps = _timeline.pixels_per_second().get ();
 334
 335                 gc->SetPen (*wxThePenList->FindOrCreatePen (wxColour (0, 0, 0), 1, wxPENSTYLE_SOLID));
 336
 337                 double mark_interval = rint (128 / pps);
 338                 if (mark_interval > 5) {
 339                         mark_interval -= int (rint (mark_interval)) % 5;
 340                 }
 341                 if (mark_interval > 10) {
 342                         mark_interval -= int (rint (mark_interval)) % 10;
 343                 }
 344                 if (mark_interval > 60) {
 345                         mark_interval -= int (rint (mark_interval)) % 60;
 346                 }
 347                 if (mark_interval > 3600) {
 348                         mark_interval -= int (rint (mark_interval)) % 3600;
 349                 }
 350
 351                 if (mark_interval < 1) {
 352                         mark_interval = 1;
 353                 }
 354
 355                 wxGraphicsPath path = gc->CreatePath ();
 356                 path.MoveToPoint (_timeline.x_offset(), _y);
 357                 path.AddLineToPoint (_timeline.width(), _y);
 358                 gc->StrokePath (path);
 359
 360                 gc->SetFont (gc->CreateFont (*wxNORMAL_FONT));
 361
 362                 /* Time in seconds */
 363                 DCPTime t;
 364                 while ((t.seconds() * pps) < _timeline.width()) {
 365                         wxGraphicsPath path = gc->CreatePath ();
 366                         path.MoveToPoint (time_x (t), _y - 4);
 367                         path.AddLineToPoint (time_x (t), _y + 4);
 368                         gc->StrokePath (path);
 369
 370                         double tc = t.seconds ();
 371                         int const h = tc / 3600;
 372                         tc -= h * 3600;
 373                         int const m = tc / 60;
 374                         tc -= m * 60;
 375                         int const s = tc;
 376
 377                         wxString str = wxString::Format (wxT ("%02d:%02d:%02d"), h, m, s);
 378                         wxDouble str_width;
 379                         wxDouble str_height;
 380                         wxDouble str_descent;
 381                         wxDouble str_leading;
 382                         gc->GetTextExtent (str, &str_width, &str_height, &str_descent, &str_leading);
 383
 384                         int const tx = _timeline.x_offset() + t.seconds() * pps;
 385                         if ((tx + str_width) < _timeline.width()) {
 386                                 gc->DrawText (str, time_x (t), _y + 16);
 387                         }
 388
 389                         t += DCPTime::from_seconds (mark_interval);
 390                 }
 391         }
 392
 393 private:
 394         int _y;
 395 };
 396
 397
 398 Timeline::Timeline (wxWindow* parent, ContentPanel* cp, shared_ptr<Film> film)
 399         : wxPanel (parent, wxID_ANY, wxDefaultPosition, wxDefaultSize, wxFULL_REPAINT_ON_RESIZE)
 400         , _content_panel (cp)
 401         , _film (film)
 402         , _time_axis_view (new TimeAxisView (*this, 32))
 403         , _tracks (0)
 404         , _left_down (false)
 405         , _down_view_position (0)
 406         , _first_move (false)
 407         , _menu (this)
 408         , _snap (true)
 409 {
 410 #ifndef __WXOSX__
 411         SetDoubleBuffered (true);
 412 #endif
 413
 414         Bind (wxEVT_PAINT,      boost::bind (&Timeline::paint,       this));
 415         Bind (wxEVT_LEFT_DOWN,  boost::bind (&Timeline::left_down,   this, _1));
 416         Bind (wxEVT_LEFT_UP,    boost::bind (&Timeline::left_up,     this, _1));
 417         Bind (wxEVT_RIGHT_DOWN, boost::bind (&Timeline::right_down,  this, _1));
 418         Bind (wxEVT_MOTION,     boost::bind (&Timeline::mouse_moved, this, _1));
 419         Bind (wxEVT_SIZE,       boost::bind (&Timeline::resized,     this));
 420
 421         playlist_changed ();
 422
 423         SetMinSize (wxSize (640, tracks() * track_height() + 96));
 424
 425         _playlist_changed_connection = film->playlist()->Changed.connect (bind (&Timeline::playlist_changed, this));
 426         _playlist_content_changed_connection = film->playlist()->ContentChanged.connect (bind (&Timeline::playlist_content_changed, this, _2));
 427 }
 428
 429 void
 430 Timeline::paint ()
 431 {
 432         wxPaintDC dc (this);
 433
 434         wxGraphicsContext* gc = wxGraphicsContext::Create (dc);
 435         if (!gc) {
 436                 return;
 437         }
 438
 439         for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 440                 (*i)->paint (gc);
 441         }
 442
 443         delete gc;
 444 }
 445
 446 void
 447 Timeline::playlist_changed ()
 448 {
 449         ensure_ui_thread ();
 450
 451         shared_ptr<const Film> fl = _film.lock ();
 452         if (!fl) {
 453                 return;
 454         }
 455
 456         _views.clear ();
 457         _views.push_back (_time_axis_view);
 458
 459         ContentList content = fl->playlist()->content ();
 460
 461         for (ContentList::iterator i = content.begin(); i != content.end(); ++i) {
 462                 if (dynamic_pointer_cast<VideoContent> (*i)) {
 463                         _views.push_back (shared_ptr<View> (new VideoContentView (*this, *i)));
 464                 }
 465                 if (dynamic_pointer_cast<AudioContent> (*i)) {
 466                         _views.push_back (shared_ptr<View> (new AudioContentView (*this, *i)));
 467                 }
 468
 469                 shared_ptr<SubtitleContent> sc = dynamic_pointer_cast<SubtitleContent> (*i);
 470                 if (sc && sc->has_subtitles ()) {
 471                         _views.push_back (shared_ptr<View> (new SubtitleContentView (*this, sc)));
 472                 }
 473         }
 474
 475         assign_tracks ();
 476         setup_pixels_per_second ();
 477         Refresh ();
 478 }
 479
 480 void
 481 Timeline::playlist_content_changed (int property)
 482 {
 483         ensure_ui_thread ();
 484
 485         if (property == ContentProperty::POSITION) {
 486                 assign_tracks ();
 487                 setup_pixels_per_second ();
 488                 Refresh ();
 489         }
 490 }
 491
 492 void
 493 Timeline::assign_tracks ()
 494 {
 495         for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 496                 shared_ptr<ContentView> c = dynamic_pointer_cast<ContentView> (*i);
 497                 if (c) {
 498                         c->unset_track ();
 499                 }
 500         }
 501
 502         for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 503                 shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
 504                 if (!cv) {
 505                         continue;
 506                 }
 507
 508                 shared_ptr<Content> content = cv->content();
 509
 510                 int t = 0;
 511                 while (true) {
 512                         ViewList::iterator j = _views.begin();
 513                         while (j != _views.end()) {
 514                                 shared_ptr<ContentView> test = dynamic_pointer_cast<ContentView> (*j);
 515                                 if (!test) {
 516                                         ++j;
 517                                         continue;
 518                                 }
 519
 520                                 shared_ptr<Content> test_content = test->content();
 521
 522                                 if (test && test->track() && test->track().get() == t) {
 523                                         bool const no_overlap =
 524                                                 (content->position() < test_content->position() && content->end() < test_content->position()) ||
 525                                                 (content->position() > test_content->end()      && content->end() > test_content->end());
 526
 527                                         if (!no_overlap) {
 528                                                 /* we have an overlap on track `t' */
 529                                                 ++t;
 530                                                 break;
 531                                         }
 532                                 }
 533
 534                                 ++j;
 535                         }
 536
 537                         if (j == _views.end ()) {
 538                                 /* no overlap on `t' */
 539                                 break;
 540                         }
 541                 }
 542
 543                 cv->set_track (t);
 544                 _tracks = max (_tracks, t + 1);
 545         }
 546
 547         _time_axis_view->set_y (tracks() * track_height() + 32);
 548 }
 549
 550 int
 551 Timeline::tracks () const
 552 {
 553         return _tracks;
 554 }
 555
 556 void
 557 Timeline::setup_pixels_per_second ()
 558 {
 559         shared_ptr<const Film> film = _film.lock ();
 560         if (!film || film->length() == DCPTime ()) {
 561                 return;
 562         }
 563
 564         _pixels_per_second = static_cast<double>(width() - x_offset() * 2) / film->length().seconds ();
 565 }
 566
 567 shared_ptr<View>
 568 Timeline::event_to_view (wxMouseEvent& ev)
 569 {
 570         ViewList::iterator i = _views.begin();
 571         Position<int> const p (ev.GetX(), ev.GetY());
 572         while (i != _views.end() && !(*i)->bbox().contains (p)) {
 573                 ++i;
 574         }
 575
 576         if (i == _views.end ()) {
 577                 return shared_ptr<View> ();
 578         }
 579
 580         return *i;
 581 }
 582
 583 void
 584 Timeline::left_down (wxMouseEvent& ev)
 585 {
 586         shared_ptr<View> view = event_to_view (ev);
 587         shared_ptr<ContentView> content_view = dynamic_pointer_cast<ContentView> (view);
 588
 589         _down_view.reset ();
 590
 591         if (content_view) {
 592                 _down_view = content_view;
 593                 _down_view_position = content_view->content()->position ();
 594         }
 595
 596         for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 597                 shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
 598                 if (!cv) {
 599                         continue;
 600                 }
 601
 602                 if (!ev.ShiftDown ()) {
 603                         cv->set_selected (view == *i);
 604                 }
 605
 606                 if (view == *i) {
 607                         _content_panel->set_selection (cv->content ());
 608                 }
 609         }
 610
 611         if (content_view && ev.ShiftDown ()) {
 612                 content_view->set_selected (!content_view->selected ());
 613         }
 614
 615         _left_down = true;
 616         _down_point = ev.GetPosition ();
 617         _first_move = false;
 618
 619         if (_down_view) {
 620                 _down_view->content()->set_change_signals_frequent (true);
 621         }
 622 }
 623
 624 void
 625 Timeline::left_up (wxMouseEvent& ev)
 626 {
 627         _left_down = false;
 628
 629         if (_down_view) {
 630                 _down_view->content()->set_change_signals_frequent (false);
 631         }
 632
 633         set_position_from_event (ev);
 634 }
 635
 636 void
 637 Timeline::mouse_moved (wxMouseEvent& ev)
 638 {
 639         if (!_left_down) {
 640                 return;
 641         }
 642
 643         set_position_from_event (ev);
 644 }
 645
 646 void
 647 Timeline::right_down (wxMouseEvent& ev)
 648 {
 649         shared_ptr<View> view = event_to_view (ev);
 650         shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (view);
 651         if (!cv) {
 652                 return;
 653         }
 654
 655         if (!cv->selected ()) {
 656                 clear_selection ();
 657                 cv->set_selected (true);
 658         }
 659
 660         _menu.popup (_film, selected_content (), ev.GetPosition ());
 661 }
 662
 663 void
 664 Timeline::set_position_from_event (wxMouseEvent& ev)
 665 {
 666         if (!_pixels_per_second) {
 667                 return;
 668         }
 669
 670         double const pps = _pixels_per_second.get ();
 671
 672         wxPoint const p = ev.GetPosition();
 673
 674         if (!_first_move) {
 675                 /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
 676                    before the drag is considered to have started.
 677                 */
 678                 int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
 679                 if (dist < 8) {
 680                         return;
 681                 }
 682                 _first_move = true;
 683         }
 684
 685         if (!_down_view) {
 686                 return;
 687         }
 688
 689         DCPTime new_position = _down_view_position + DCPTime::from_seconds ((p.x - _down_point.x) / pps);
 690
 691         if (_snap) {
 692
 693                 bool first = true;
 694                 DCPTime nearest_distance = DCPTime::max ();
 695                 DCPTime nearest_new_position = DCPTime::max ();
 696
 697                 /* Find the nearest content edge; this is inefficient */
 698                 for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 699                         shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
 700                         if (!cv || cv == _down_view) {
 701                                 continue;
 702                         }
 703
 704                         {
 705                                 /* Snap starts to ends */
 706                                 DCPTime const d = DCPTime (cv->content()->end() - new_position).abs ();
 707                                 if (first || d < nearest_distance) {
 708                                         nearest_distance = d;
 709                                         nearest_new_position = cv->content()->end();
 710                                 }
 711                         }
 712
 713                         {
 714                                 /* Snap ends to starts */
 715                                 DCPTime const d = DCPTime (
 716                                         cv->content()->position() - (new_position + _down_view->content()->length_after_trim())
 717                                         ).abs ();
 718
 719                                 if (d < nearest_distance) {
 720                                         nearest_distance = d;
 721                                         nearest_new_position = cv->content()->position() - _down_view->content()->length_after_trim ();
 722                                 }
 723                         }
 724
 725                         first = false;
 726                 }
 727
 728                 if (!first) {
 729                         /* Snap if it's close; `close' means within a proportion of the time on the timeline */
 730                         if (nearest_distance < DCPTime::from_seconds ((width() / pps) / 32)) {
 731                                 new_position = nearest_new_position;
 732                         }
 733                 }
 734         }
 735
 736         if (new_position < DCPTime ()) {
 737                 new_position = DCPTime ();
 738         }
 739
 740         _down_view->content()->set_position (new_position);
 741
 742         shared_ptr<Film> film = _film.lock ();
 743         assert (film);
 744         film->set_sequence_video (false);
 745 }
 746
 747 void
 748 Timeline::force_redraw (dcpomatic::Rect<int> const & r)
 749 {
 750         RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
 751 }
 752
 753 shared_ptr<const Film>
 754 Timeline::film () const
 755 {
 756         return _film.lock ();
 757 }
 758
 759 void
 760 Timeline::resized ()
 761 {
 762         setup_pixels_per_second ();
 763 }
 764
 765 void
 766 Timeline::clear_selection ()
 767 {
 768         for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
 769                 shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
 770                 if (cv) {
 771                         cv->set_selected (false);
 772                 }
 773         }
 774 }
 775
 776 Timeline::ContentViewList
 777 Timeline::selected_views () const
 778 {
 779         ContentViewList sel;
 780
 781         for (ViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
 782                 shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
 783                 if (cv && cv->selected()) {
 784                         sel.push_back (cv);
 785                 }
 786         }
 787
 788         return sel;
 789 }
 790
 791 ContentList
 792 Timeline::selected_content () const
 793 {
 794         ContentList sel;
 795         ContentViewList views = selected_views ();
 796
 797         for (ContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
 798                 sel.push_back ((*i)->content ());
 799         }
 800
 801         return sel;
 802 }