src/wx/timing_panel.cc

   1 /*
   2     Copyright (C) 2012-2018 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 "timing_panel.h"
  22 #include "wx_util.h"
  23 #include "film_viewer.h"
  24 #include "timecode.h"
  25 #include "content_panel.h"
  26 #include "move_to_dialog.h"
  27 #include "static_text.h"
  28 #include "dcpomatic_button.h"
  29 #include "lib/content.h"
  30 #include "lib/image_content.h"
  31 #include "lib/text_content.h"
  32 #include "lib/dcp_subtitle_content.h"
  33 #include "lib/audio_content.h"
  34 #include "lib/string_text_file_content.h"
  35 #include "lib/video_content.h"
  36 #include "lib/dcp_content.h"
  37 #include "lib/ffmpeg_content.h"
  38 #include <dcp/locale_convert.h>
  39 #include "lib/warnings.h"
  40 #if defined(__WXGTK20__) && !defined(__WXGTK3__)
  41 #define TIMING_PANEL_ALIGNMENT_HACK 1
  42 DCPOMATIC_DISABLE_WARNINGS
  43 #include <gtk/gtk.h>
  44 DCPOMATIC_ENABLE_WARNINGS
  45 #endif
  46 #include <boost/foreach.hpp>
  47 #include <set>
  48 #include <iostream>
  49
  50 using std::cout;
  51 using std::string;
  52 using std::set;
  53 using boost::shared_ptr;
  54 using boost::weak_ptr;
  55 using boost::dynamic_pointer_cast;
  56 using boost::optional;
  57 using dcp::locale_convert;
  58 using namespace dcpomatic;
  59
  60 TimingPanel::TimingPanel (ContentPanel* p, weak_ptr<FilmViewer> viewer)
  61         /* horrid hack for apparent lack of context support with wxWidgets i18n code */
  62         /// TRANSLATORS: translate the word "Timing" here; do not include the "Timing|" prefix
  63         : ContentSubPanel (p, S_("Timing|Timing"))
  64         , _viewer (viewer)
  65         , _film_content_changed_suspender (boost::bind(&TimingPanel::film_content_changed, this, _1))
  66 {
  67         wxSize size = TimecodeBase::size (this);
  68
  69         for (int i = 0; i < 3; ++i) {
  70                 _colon[i] = create_label (this, wxT(":"), false);
  71         }
  72
  73         //// TRANSLATORS: this is an abbreviation for "hours"
  74         _h_label = new StaticText (this, _("h"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
  75 #ifdef TIMING_PANEL_ALIGNMENT_HACK
  76         /* Hack to work around failure to centre text on GTK */
  77         gtk_label_set_line_wrap (GTK_LABEL(_h_label->GetHandle()), FALSE);
  78 #endif
  79         //// TRANSLATORS: this is an abbreviation for "minutes"
  80         _m_label = new StaticText (this, _("m"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
  81 #ifdef TIMING_PANEL_ALIGNMENT_HACK
  82         gtk_label_set_line_wrap (GTK_LABEL (_m_label->GetHandle()), FALSE);
  83 #endif
  84         //// TRANSLATORS: this is an abbreviation for "seconds"
  85         _s_label = new StaticText (this, _("s"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
  86 #ifdef TIMING_PANEL_ALIGNMENT_HACK
  87         gtk_label_set_line_wrap (GTK_LABEL(_s_label->GetHandle()), FALSE);
  88 #endif
  89         //// TRANSLATORS: this is an abbreviation for "frames"
  90         _f_label = new StaticText (this, _("f"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
  91 #ifdef TIMING_PANEL_ALIGNMENT_HACK
  92         gtk_label_set_line_wrap (GTK_LABEL(_f_label->GetHandle()), FALSE);
  93 #endif
  94
  95         _position_label = create_label (this, _("Position"), true);
  96         _position = new Timecode<DCPTime> (this);
  97         _move_to_start_of_reel = new Button (this, _("Move to start of reel"));
  98         _full_length_label = create_label (this, _("Full length"), true);
  99         _full_length = new Timecode<DCPTime> (this);
 100         _trim_start_label = create_label (this, _("Trim from start"), true);
 101         _trim_start = new Timecode<ContentTime> (this);
 102         _trim_start_to_playhead = new Button (this, _("Trim up to current position"));
 103         _trim_end_label = create_label (this, _("Trim from end"), true);
 104         _trim_end = new Timecode<ContentTime> (this);
 105         _trim_end_to_playhead = new Button (this, _("Trim after current position"));
 106         _play_length_label = create_label (this, _("Play length"), true);
 107         _play_length = new Timecode<DCPTime> (this);
 108
 109         _video_frame_rate_label = create_label (this, _("Video frame rate"), true);
 110         _video_frame_rate = new wxTextCtrl (this, wxID_ANY);
 111         _set_video_frame_rate = new Button (this, _("Set"));
 112         _set_video_frame_rate->Enable (false);
 113
 114         /* We can't use Wrap() here as it doesn't work with markup:
 115          * http://trac.wxwidgets.org/ticket/13389
 116          */
 117
 118         wxString in = _("<i>Only change this if the content's frame rate has been read incorrectly.</i>");
 119         wxString out;
 120         int const width = 20;
 121         int current = 0;
 122         for (size_t i = 0; i < in.Length(); ++i) {
 123                 if (in[i] == ' ' && current >= width) {
 124                         out += '\n';
 125                         current = 0;
 126                 } else {
 127                         out += in[i];
 128                         ++current;
 129                 }
 130         }
 131
 132         _tip = new StaticText (this, wxT (""));
 133         _tip->SetLabelMarkup (out);
 134 #ifdef DCPOMATIC_OSX
 135         /* Hack to stop hidden text on some versions of OS X */
 136         _tip->SetMinSize (wxSize (-1, 256));
 137 #endif
 138
 139         _position->Changed.connect    (boost::bind (&TimingPanel::position_changed, this));
 140         _move_to_start_of_reel->Bind  (wxEVT_BUTTON, boost::bind (&TimingPanel::move_to_start_of_reel_clicked, this));
 141         _full_length->Changed.connect (boost::bind (&TimingPanel::full_length_changed, this));
 142         _trim_start->Changed.connect  (boost::bind (&TimingPanel::trim_start_changed, this));
 143         _trim_start_to_playhead->Bind (wxEVT_BUTTON, boost::bind (&TimingPanel::trim_start_to_playhead_clicked, this));
 144         _trim_end->Changed.connect    (boost::bind (&TimingPanel::trim_end_changed, this));
 145         _trim_end_to_playhead->Bind   (wxEVT_BUTTON, boost::bind (&TimingPanel::trim_end_to_playhead_clicked, this));
 146         _play_length->Changed.connect (boost::bind (&TimingPanel::play_length_changed, this));
 147         _video_frame_rate->Bind       (wxEVT_TEXT, boost::bind (&TimingPanel::video_frame_rate_changed, this));
 148         _set_video_frame_rate->Bind   (wxEVT_BUTTON, boost::bind (&TimingPanel::set_video_frame_rate, this));
 149
 150         shared_ptr<FilmViewer> fv = _viewer.lock ();
 151         DCPOMATIC_ASSERT (fv);
 152         fv->ImageChanged.connect (boost::bind (&TimingPanel::setup_sensitivity, this));
 153
 154         setup_sensitivity ();
 155         add_to_grid ();
 156 }
 157
 158 void
 159 TimingPanel::add_to_grid ()
 160 {
 161         bool const full = Config::instance()->interface_complexity() == Config::INTERFACE_FULL;
 162
 163         int r = 0;
 164
 165         wxSizer* labels = new wxBoxSizer (wxHORIZONTAL);
 166         labels->Add (_h_label, 1, wxEXPAND);
 167         add_label_to_sizer (labels, _colon[0], false);
 168         labels->Add (_m_label, 1, wxEXPAND);
 169         add_label_to_sizer (labels, _colon[1], false);
 170         labels->Add (_s_label, 1, wxEXPAND);
 171         add_label_to_sizer (labels, _colon[2], false);
 172         labels->Add (_f_label, 1, wxEXPAND);
 173         _grid->Add (labels, wxGBPosition(r, 1));
 174         ++r;
 175
 176         add_label_to_sizer (_grid, _position_label, true, wxGBPosition(r, 0));
 177         _grid->Add (_position, wxGBPosition(r, 1));
 178         ++r;
 179
 180         _move_to_start_of_reel->Show (full);
 181         _full_length_label->Show (full);
 182         _full_length->Show (full);
 183         _play_length_label->Show (full);
 184         _play_length->Show (full);
 185         _video_frame_rate_label->Show (full);
 186         _video_frame_rate->Show (full);
 187         _set_video_frame_rate->Show (full);
 188         _tip->Show (full);
 189
 190         if (full) {
 191                 _grid->Add (_move_to_start_of_reel, wxGBPosition(r, 1));
 192                 ++r;
 193
 194                 add_label_to_sizer (_grid, _full_length_label, true, wxGBPosition(r, 0));
 195                 _grid->Add (_full_length, wxGBPosition(r, 1));
 196                 ++r;
 197         }
 198
 199         add_label_to_sizer (_grid, _trim_start_label, true, wxGBPosition(r, 0));
 200         _grid->Add (_trim_start, wxGBPosition(r, 1));
 201         ++r;
 202
 203         _grid->Add (_trim_start_to_playhead, wxGBPosition(r, 1));
 204         ++r;
 205
 206         add_label_to_sizer (_grid, _trim_end_label, true, wxGBPosition(r, 0));
 207         _grid->Add (_trim_end, wxGBPosition(r, 1));
 208         ++r;
 209
 210         _grid->Add (_trim_end_to_playhead, wxGBPosition(r, 1));
 211         ++r;
 212
 213         if (full) {
 214                 add_label_to_sizer (_grid, _play_length_label, true, wxGBPosition(r, 0));
 215                 _grid->Add (_play_length, wxGBPosition(r, 1));
 216                 ++r;
 217
 218                 {
 219                         add_label_to_sizer (_grid, _video_frame_rate_label, true, wxGBPosition(r, 0));
 220                         wxBoxSizer* s = new wxBoxSizer (wxHORIZONTAL);
 221                         s->Add (_video_frame_rate, 1, wxEXPAND);
 222                         s->Add (_set_video_frame_rate, 0, wxLEFT | wxRIGHT, 8);
 223                         _grid->Add (s, wxGBPosition(r, 1), wxGBSpan(1, 2));
 224                 }
 225                 ++r;
 226
 227                 _grid->Add (_tip, wxGBPosition(r, 1), wxGBSpan(1, 2));
 228         }
 229
 230         /* Completely speculative fix for #891 */
 231         _grid->Layout ();
 232 }
 233
 234 void
 235 TimingPanel::update_full_length ()
 236 {
 237         set<DCPTime> check;
 238         BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 239                 check.insert (i->full_length(_parent->film()));
 240         }
 241
 242         if (check.size() == 1) {
 243                 _full_length->set (_parent->selected().front()->full_length(_parent->film()), _parent->film()->video_frame_rate());
 244         } else {
 245                 _full_length->clear ();
 246         }
 247 }
 248
 249 void
 250 TimingPanel::update_play_length ()
 251 {
 252         set<DCPTime> check;
 253         BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 254                 check.insert (i->length_after_trim(_parent->film()));
 255         }
 256
 257         if (check.size() == 1) {
 258                 _play_length->set (_parent->selected().front()->length_after_trim(_parent->film()), _parent->film()->video_frame_rate());
 259         } else {
 260                 _play_length->clear ();
 261         }
 262 }
 263
 264 void
 265 TimingPanel::film_content_changed (int property)
 266 {
 267         if (_film_content_changed_suspender.check(property)) {
 268                 return;
 269         }
 270
 271         int const film_video_frame_rate = _parent->film()->video_frame_rate ();
 272
 273         /* Here we check to see if we have exactly one different value of various
 274            properties, and fill the controls with that value if so.
 275         */
 276
 277         if (property == ContentProperty::POSITION) {
 278
 279                 set<DCPTime> check;
 280                 BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 281                         check.insert (i->position ());
 282                 }
 283
 284                 if (check.size() == 1) {
 285                         _position->set (_parent->selected().front()->position(), film_video_frame_rate);
 286                 } else {
 287                         _position->clear ();
 288                 }
 289
 290         } else if (
 291                 property == ContentProperty::LENGTH ||
 292                 property == ContentProperty::VIDEO_FRAME_RATE ||
 293                 property == VideoContentProperty::FRAME_TYPE
 294                 ) {
 295
 296                 update_full_length ();
 297
 298         } else if (property == ContentProperty::TRIM_START) {
 299
 300                 set<ContentTime> check;
 301                 BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 302                         check.insert (i->trim_start ());
 303                 }
 304
 305                 if (check.size() == 1) {
 306                         _trim_start->set (_parent->selected().front()->trim_start (), film_video_frame_rate);
 307                 } else {
 308                         _trim_start->clear ();
 309                 }
 310
 311         } else if (property == ContentProperty::TRIM_END) {
 312
 313                 set<ContentTime> check;
 314                 BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 315                         check.insert (i->trim_end ());
 316                 }
 317
 318                 if (check.size() == 1) {
 319                         _trim_end->set (_parent->selected().front()->trim_end (), film_video_frame_rate);
 320                 } else {
 321                         _trim_end->clear ();
 322                 }
 323         }
 324
 325         if (
 326                 property == ContentProperty::LENGTH ||
 327                 property == ContentProperty::TRIM_START ||
 328                 property == ContentProperty::TRIM_END ||
 329                 property == ContentProperty::VIDEO_FRAME_RATE ||
 330                 property == VideoContentProperty::FRAME_TYPE
 331                 ) {
 332
 333                 update_play_length ();
 334         }
 335
 336         if (property == ContentProperty::VIDEO_FRAME_RATE) {
 337                 set<double> check_vc;
 338                 shared_ptr<const Content> content;
 339                 int count_ac = 0;
 340                 int count_sc = 0;
 341                 BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 342                         if (i->video && i->video_frame_rate()) {
 343                                 check_vc.insert (i->video_frame_rate().get());
 344                                 content = i;
 345                         }
 346                         if (i->audio && i->video_frame_rate()) {
 347                                 ++count_ac;
 348                                 content = i;
 349                         }
 350                         if (!i->text.empty() && i->video_frame_rate()) {
 351                                 ++count_sc;
 352                                 content = i;
 353                         }
 354
 355                 }
 356
 357                 bool const single_frame_image_content = content && dynamic_pointer_cast<const ImageContent> (content) && content->number_of_paths() == 1;
 358
 359                 if ((check_vc.size() == 1 || count_ac == 1 || count_sc == 1) && !single_frame_image_content) {
 360                         checked_set (_video_frame_rate, locale_convert<string> (content->video_frame_rate().get(), 5));
 361                         _video_frame_rate->Enable (true);
 362                 } else {
 363                         checked_set (_video_frame_rate, wxT (""));
 364                         _video_frame_rate->Enable (false);
 365                 }
 366         }
 367
 368         bool have_still = false;
 369         BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 370                 shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (i);
 371                 if (ic && ic->still ()) {
 372                         have_still = true;
 373                 }
 374         }
 375
 376         _full_length->set_editable (have_still);
 377         _play_length->set_editable (!have_still);
 378         _set_video_frame_rate->Enable (false);
 379         setup_sensitivity ();
 380 }
 381
 382 void
 383 TimingPanel::position_changed ()
 384 {
 385         DCPTime const pos = _position->get (_parent->film()->video_frame_rate ());
 386         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 387                 i->set_position (_parent->film(), pos);
 388         }
 389 }
 390
 391 void
 392 TimingPanel::full_length_changed ()
 393 {
 394         int const vfr = _parent->film()->video_frame_rate ();
 395         Frame const len = _full_length->get (vfr).frames_round (vfr);
 396         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 397                 shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (i);
 398                 if (ic && ic->still ()) {
 399                         ic->video->set_length (len);
 400                 }
 401         }
 402 }
 403
 404 void
 405 TimingPanel::trim_start_changed ()
 406 {
 407         shared_ptr<FilmViewer> fv = _viewer.lock ();
 408         if (!fv) {
 409                 return;
 410         }
 411
 412         DCPTime const ph = fv->position ();
 413
 414         fv->set_coalesce_player_changes (true);
 415
 416         shared_ptr<Content> ref;
 417         optional<FrameRateChange> ref_frc;
 418         optional<DCPTime> ref_ph;
 419
 420         Suspender::Block bl = _film_content_changed_suspender.block ();
 421         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 422                 if (i->position() <= ph && ph < i->end(_parent->film())) {
 423                         /* The playhead is in i.  Use it as a reference to work out
 424                            where to put the playhead post-trim; we're trying to keep the playhead
 425                            at the same frame of content that we're looking at pre-trim.
 426                         */
 427                         ref = i;
 428                         ref_frc = _parent->film()->active_frame_rate_change (i->position ());
 429                         ref_ph = ph - i->position() + DCPTime (i->trim_start(), ref_frc.get());
 430                 }
 431
 432                 ContentTime const trim = _trim_start->get (i->video_frame_rate().get_value_or(_parent->film()->video_frame_rate()));
 433                 i->set_trim_start (trim);
 434         }
 435
 436         if (ref) {
 437                 fv->seek (max(DCPTime(), ref_ph.get() + ref->position() - DCPTime(ref->trim_start(), ref_frc.get())), true);
 438         }
 439
 440         fv->set_coalesce_player_changes (false);
 441 }
 442
 443 void
 444 TimingPanel::trim_end_changed ()
 445 {
 446         shared_ptr<FilmViewer> fv = _viewer.lock ();
 447         if (!fv) {
 448                 return;
 449         }
 450
 451         fv->set_coalesce_player_changes (true);
 452
 453         Suspender::Block bl = _film_content_changed_suspender.block ();
 454         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 455                 ContentTime const trim = _trim_end->get (i->video_frame_rate().get_value_or(_parent->film()->video_frame_rate()));
 456                 i->set_trim_end (trim);
 457         }
 458
 459         /* XXX: maybe playhead-off-the-end-of-the-film should be handled elsewhere */
 460         if (fv->position() >= _parent->film()->length()) {
 461                 fv->seek (_parent->film()->length() - DCPTime::from_frames(1, _parent->film()->video_frame_rate()), true);
 462         }
 463
 464         fv->set_coalesce_player_changes (false);
 465 }
 466
 467 void
 468 TimingPanel::play_length_changed ()
 469 {
 470         DCPTime const play_length = _play_length->get (_parent->film()->video_frame_rate());
 471         Suspender::Block bl = _film_content_changed_suspender.block ();
 472         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 473                 FrameRateChange const frc = _parent->film()->active_frame_rate_change (i->position ());
 474                 i->set_trim_end (
 475                         ContentTime (max(DCPTime(), i->full_length(_parent->film()) - play_length), frc) - i->trim_start()
 476                         );
 477         }
 478 }
 479
 480 void
 481 TimingPanel::video_frame_rate_changed ()
 482 {
 483         bool enable = true;
 484         if (_video_frame_rate->GetValue() == wxT("")) {
 485                 /* No frame rate has been entered; if the user clicks "set" now it would unset the video
 486                    frame rate in the selected content.  This can't be allowed for some content types.
 487                 */
 488                 BOOST_FOREACH (shared_ptr<Content> i, _parent->selected()) {
 489                         if (
 490                                 dynamic_pointer_cast<DCPContent>(i) ||
 491                                 dynamic_pointer_cast<FFmpegContent>(i)
 492                                 ) {
 493                                 enable = false;
 494                         }
 495                 }
 496         }
 497
 498         _set_video_frame_rate->Enable (enable);
 499 }
 500
 501 void
 502 TimingPanel::set_video_frame_rate ()
 503 {
 504         optional<double> fr;
 505         if (_video_frame_rate->GetValue() != wxT("")) {
 506                 fr = locale_convert<double> (wx_to_std (_video_frame_rate->GetValue ()));
 507         }
 508         Suspender::Block bl = _film_content_changed_suspender.block ();
 509         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 510                 if (fr) {
 511                         i->set_video_frame_rate (*fr);
 512                 } else {
 513                         i->unset_video_frame_rate ();
 514                 }
 515         }
 516
 517         _set_video_frame_rate->Enable (false);
 518 }
 519
 520 void
 521 TimingPanel::content_selection_changed ()
 522 {
 523         setup_sensitivity ();
 524
 525         film_content_changed (ContentProperty::POSITION);
 526         film_content_changed (ContentProperty::LENGTH);
 527         film_content_changed (ContentProperty::TRIM_START);
 528         film_content_changed (ContentProperty::TRIM_END);
 529         film_content_changed (ContentProperty::VIDEO_FRAME_RATE);
 530 }
 531
 532 void
 533 TimingPanel::film_changed (Film::Property p)
 534 {
 535         if (p == Film::VIDEO_FRAME_RATE) {
 536                 update_full_length ();
 537                 update_play_length ();
 538         }
 539 }
 540
 541 void
 542 TimingPanel::trim_start_to_playhead_clicked ()
 543 {
 544         shared_ptr<FilmViewer> fv = _viewer.lock ();
 545         if (!fv) {
 546                 return;
 547         }
 548
 549         shared_ptr<const Film> film = _parent->film ();
 550         DCPTime const ph = fv->position().floor (film->video_frame_rate ());
 551         optional<DCPTime> new_ph;
 552
 553         fv->set_coalesce_player_changes (true);
 554
 555         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 556                 if (i->position() < ph && ph < i->end(film)) {
 557                         FrameRateChange const frc = film->active_frame_rate_change (i->position());
 558                         i->set_trim_start (i->trim_start() + ContentTime (ph - i->position(), frc));
 559                         new_ph = i->position ();
 560                 }
 561         }
 562
 563         if (new_ph) {
 564                 fv->seek (new_ph.get(), true);
 565         }
 566
 567         fv->set_coalesce_player_changes (false);
 568 }
 569
 570 void
 571 TimingPanel::trim_end_to_playhead_clicked ()
 572 {
 573         shared_ptr<FilmViewer> fv = _viewer.lock ();
 574         if (!fv) {
 575                 return;
 576         }
 577
 578         shared_ptr<const Film> film = _parent->film ();
 579         DCPTime const ph = fv->position().floor (film->video_frame_rate ());
 580         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 581                 if (i->position() < ph && ph < i->end(film)) {
 582                         FrameRateChange const frc = film->active_frame_rate_change (i->position ());
 583                         i->set_trim_end (ContentTime(i->position() + i->full_length(film) - ph - DCPTime::from_frames(1, frc.dcp), frc) - i->trim_start());
 584                 }
 585         }
 586 }
 587
 588 void
 589 TimingPanel::setup_sensitivity ()
 590 {
 591         bool const e = !_parent->selected().empty ();
 592
 593         _position->Enable (e);
 594         _move_to_start_of_reel->Enable (e);
 595         _full_length->Enable (e);
 596         _trim_start->Enable (e);
 597         _trim_end->Enable (e);
 598         _play_length->Enable (e);
 599         _video_frame_rate->Enable (e);
 600
 601         shared_ptr<FilmViewer> fv = _viewer.lock ();
 602         DCPOMATIC_ASSERT (fv);
 603         DCPTime const ph = fv->position ();
 604         bool any_over_ph = false;
 605         BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
 606                 if (i->position() <= ph && ph < i->end(_parent->film())) {
 607                         any_over_ph = true;
 608                 }
 609         }
 610
 611         _trim_start_to_playhead->Enable (any_over_ph);
 612         _trim_end_to_playhead->Enable (any_over_ph);
 613 }
 614
 615 void
 616 TimingPanel::move_to_start_of_reel_clicked ()
 617 {
 618         /* Find common position of all selected content, if it exists */
 619
 620         optional<DCPTime> position;
 621         BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
 622                 if (!position) {
 623                         position = i->position();
 624                 } else {
 625                         if (position.get() != i->position()) {
 626                                 position.reset ();
 627                                 break;
 628                         }
 629                 }
 630         }
 631
 632         MoveToDialog* d = new MoveToDialog (this, position, _parent->film());
 633
 634         if (d->ShowModal() == wxID_OK) {
 635                 BOOST_FOREACH (shared_ptr<Content> i, _parent->selected()) {
 636                         i->set_position (_parent->film(), d->position());
 637                 }
 638         }
 639         d->Destroy ();
 640 }