X-Git-Url: https://main.carlh.net/gitweb/?p=dcpomatic.git;a=blobdiff_plain;f=src%2Fwx%2Ftiming_panel.cc;h=93ac0278438bac6ff8932f4e0ecaa094fc123be3;hp=38891fb0e841af1b65c038d130298079e5edc2a5;hb=507a389e9c5f84ec1d51e7566e38fbf42f658537;hpb=864467b923a8df73af37e3f662d2889735a7f95d

diff --git a/src/wx/timing_panel.cc b/src/wx/timing_panel.cc
index 38891fb0e..93ac02784 100644
--- a/src/wx/timing_panel.cc
+++ b/src/wx/timing_panel.cc
@@ -1,58 +1,115 @@
 /*
-    Copyright (C) 2012-2013 Carl Hetherington <cth@carlh.net>
+    Copyright (C) 2012-2016 Carl Hetherington <cth@carlh.net>
 
-    This program is free software; you can redistribute it and/or modify
+    This file is part of DCP-o-matic.
+
+    DCP-o-matic is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
     the Free Software Foundation; either version 2 of the License, or
     (at your option) any later version.
 
-    This program is distributed in the hope that it will be useful,
+    DCP-o-matic is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     GNU General Public License for more details.
 
     You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+    along with DCP-o-matic.  If not, see <http://www.gnu.org/licenses/>.
 
 */
 
-#include <libdcp/raw_convert.h>
-#include "lib/content.h"
-#include "lib/image_content.h"
 #include "timing_panel.h"
 #include "wx_util.h"
+#include "film_viewer.h"
 #include "timecode.h"
-#include "film_editor.h"
+#include "content_panel.h"
+#include "move_to_dialog.h"
+#include "lib/content.h"
+#include "lib/image_content.h"
+#include "lib/text_content.h"
+#include "lib/dcp_text_content.h"
+#include "lib/audio_content.h"
+#include "lib/plain_text_file_content.h"
+#include "lib/video_content.h"
+#include <dcp/locale_convert.h>
+#include <boost/foreach.hpp>
+#include <set>
+#include <iostream>
 
 using std::cout;
 using std::string;
 using std::set;
 using boost::shared_ptr;
 using boost::dynamic_pointer_cast;
-using libdcp::raw_convert;
+using boost::optional;
+using dcp::locale_convert;
 
-TimingPanel::TimingPanel (FilmEditor* e)
+TimingPanel::TimingPanel (ContentPanel* p, FilmViewer* viewer)
 	/* horrid hack for apparent lack of context support with wxWidgets i18n code */
-	: FilmEditorPanel (e, S_("Timing|Timing"))
+	/// TRANSLATORS: translate the word "Timing" here; do not include the "Timing|" prefix
+	: ContentSubPanel (p, S_("Timing|Timing"))
+	, _viewer (viewer)
 {
 	wxFlexGridSizer* grid = new wxFlexGridSizer (2, 4, 4);
 	_sizer->Add (grid, 0, wxALL, 8);
 
+	wxSize size = TimecodeBase::size (this);
+
+	wxSizer* labels = new wxBoxSizer (wxHORIZONTAL);
+	//// TRANSLATORS: this is an abbreviation for "hours"
+	wxStaticText* t = new wxStaticText (this, wxID_ANY, _("h"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
+#ifdef DCPOMATIC_LINUX
+	/* Hack to work around failure to centre text on GTK */
+	gtk_label_set_line_wrap (GTK_LABEL (t->GetHandle()), FALSE);
+#endif
+	labels->Add (t, 1, wxEXPAND);
+	add_label_to_sizer (labels, this, wxT (":"), false);
+	//// TRANSLATORS: this is an abbreviation for "minutes"
+	t = new wxStaticText (this, wxID_ANY, _("m"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
+#ifdef DCPOMATIC_LINUX
+	gtk_label_set_line_wrap (GTK_LABEL (t->GetHandle()), FALSE);
+#endif
+	labels->Add (t, 1, wxEXPAND);
+	add_label_to_sizer (labels, this, wxT (":"), false);
+	//// TRANSLATORS: this is an abbreviation for "seconds"
+	t = new wxStaticText (this, wxID_ANY, _("s"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
+#ifdef DCPOMATIC_LINUX
+	gtk_label_set_line_wrap (GTK_LABEL (t->GetHandle()), FALSE);
+#endif
+	labels->Add (t, 1, wxEXPAND);
+	add_label_to_sizer (labels, this, wxT (":"), false);
+	//// TRANSLATORS: this is an abbreviation for "frames"
+	t = new wxStaticText (this, wxID_ANY, _("f"), wxDefaultPosition, size, wxALIGN_CENTRE_HORIZONTAL);
+#ifdef DCPOMATIC_LINUX
+	gtk_label_set_line_wrap (GTK_LABEL (t->GetHandle()), FALSE);
+#endif
+	labels->Add (t, 1, wxEXPAND);
+	grid->Add (new wxStaticText (this, wxID_ANY, wxT ("")));
+	grid->Add (labels);
+
 	add_label_to_sizer (grid, this, _("Position"), true);
-	_position = new Timecode (this);
+	_position = new Timecode<DCPTime> (this);
 	grid->Add (_position);
+	_move_to_start_of_reel = new wxButton (this, wxID_ANY, _("Move to start of reel"));
+	grid->AddSpacer (0);
+	grid->Add (_move_to_start_of_reel);
 	add_label_to_sizer (grid, this, _("Full length"), true);
-	_full_length = new Timecode (this);
+	_full_length = new Timecode<DCPTime> (this);
 	grid->Add (_full_length);
 	add_label_to_sizer (grid, this, _("Trim from start"), true);
-	_trim_start = new Timecode (this);
+	_trim_start = new Timecode<ContentTime> (this);
 	grid->Add (_trim_start);
+	_trim_start_to_playhead = new wxButton (this, wxID_ANY, _("Trim up to current position"));
+	grid->AddSpacer (0);
+	grid->Add (_trim_start_to_playhead);
 	add_label_to_sizer (grid, this, _("Trim from end"), true);
-	_trim_end = new Timecode (this);
+	_trim_end = new Timecode<ContentTime> (this);
 	grid->Add (_trim_end);
+	_trim_end_to_playhead = new wxButton (this, wxID_ANY, _("Trim after current position"));
+	grid->AddSpacer (0);
+	grid->Add (_trim_end_to_playhead);
 	add_label_to_sizer (grid, this, _("Play length"), true);
-	_play_length = new Timecode (this);
+	_play_length = new Timecode<DCPTime> (this);
 	grid->Add (_play_length);
 
 	{
@@ -66,79 +123,137 @@ TimingPanel::TimingPanel (FilmEditor* e)
 		grid->Add (s, 1, wxEXPAND);
 	}
 
+	grid->AddSpacer (0);
+
+	/* We can't use Wrap() here as it doesn't work with markup:
+	 * http://trac.wxwidgets.org/ticket/13389
+	 */
+
+	wxString in = _("<i>Only change this if the content's frame rate has been read incorrectly.</i>");
+	wxString out;
+	int const width = 20;
+	int current = 0;
+	for (size_t i = 0; i < in.Length(); ++i) {
+		if (in[i] == ' ' && current >= width) {
+			out += '\n';
+			current = 0;
+		} else {
+			out += in[i];
+			++current;
+		}
+	}
+
+	t = new wxStaticText (this, wxID_ANY, wxT (""));
+	t->SetLabelMarkup (out);
+#ifdef DCPOMATIC_OSX
+	/* Hack to stop hidden text on some versions of OS X */
+	t->SetMinSize (wxSize (-1, 256));
+#endif
+	grid->Add (t, 0, wxALIGN_CENTER_VERTICAL | wxLEFT | wxRIGHT, 6);
+
+	/* Completely speculative fix for #891 */
+	grid->Layout ();
+
 	_position->Changed.connect    (boost::bind (&TimingPanel::position_changed, this));
+	_move_to_start_of_reel->Bind  (wxEVT_BUTTON, boost::bind (&TimingPanel::move_to_start_of_reel_clicked, this));
 	_full_length->Changed.connect (boost::bind (&TimingPanel::full_length_changed, this));
 	_trim_start->Changed.connect  (boost::bind (&TimingPanel::trim_start_changed, this));
+	_trim_start_to_playhead->Bind (wxEVT_BUTTON, boost::bind (&TimingPanel::trim_start_to_playhead_clicked, this));
 	_trim_end->Changed.connect    (boost::bind (&TimingPanel::trim_end_changed, this));
+	_trim_end_to_playhead->Bind   (wxEVT_BUTTON, boost::bind (&TimingPanel::trim_end_to_playhead_clicked, this));
 	_play_length->Changed.connect (boost::bind (&TimingPanel::play_length_changed, this));
-	_video_frame_rate->Bind       (wxEVT_COMMAND_TEXT_UPDATED, boost::bind (&TimingPanel::video_frame_rate_changed, this));
-	_set_video_frame_rate->Bind   (wxEVT_COMMAND_BUTTON_CLICKED, boost::bind (&TimingPanel::set_video_frame_rate, this));
+	_video_frame_rate->Bind       (wxEVT_TEXT, boost::bind (&TimingPanel::video_frame_rate_changed, this));
+	_set_video_frame_rate->Bind   (wxEVT_BUTTON, boost::bind (&TimingPanel::set_video_frame_rate, this));
+
+	_viewer->ImageChanged.connect (boost::bind (&TimingPanel::setup_sensitivity, this));
+
+	setup_sensitivity ();
+}
+
+void
+TimingPanel::update_full_length ()
+{
+	set<DCPTime> check;
+	BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+		check.insert (i->full_length ());
+	}
+
+	if (check.size() == 1) {
+		_full_length->set (_parent->selected().front()->full_length (), _parent->film()->video_frame_rate ());
+	} else {
+		_full_length->clear ();
+	}
+}
+
+void
+TimingPanel::update_play_length ()
+{
+	set<DCPTime> check;
+	BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+		check.insert (i->length_after_trim ());
+	}
+
+	if (check.size() == 1) {
+		_play_length->set (_parent->selected().front()->length_after_trim (), _parent->film()->video_frame_rate ());
+	} else {
+		_play_length->clear ();
+	}
 }
 
 void
 TimingPanel::film_content_changed (int property)
 {
-	ContentList cl = _editor->selected_content ();
-	int const film_video_frame_rate = _editor->film()->video_frame_rate ();
+	int const film_video_frame_rate = _parent->film()->video_frame_rate ();
 
 	/* Here we check to see if we have exactly one different value of various
 	   properties, and fill the controls with that value if so.
 	*/
-	
+
 	if (property == ContentProperty::POSITION) {
 
-		set<Time> check;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			check.insert ((*i)->position ());
+		set<DCPTime> check;
+		BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+			check.insert (i->position ());
 		}
 
 		if (check.size() == 1) {
-			_position->set (cl.front()->position(), film_video_frame_rate);
+			_position->set (_parent->selected().front()->position(), film_video_frame_rate);
 		} else {
 			_position->clear ();
 		}
-		
+
 	} else if (
 		property == ContentProperty::LENGTH ||
-		property == VideoContentProperty::VIDEO_FRAME_RATE ||
-		property == VideoContentProperty::VIDEO_FRAME_TYPE
+		property == ContentProperty::VIDEO_FRAME_RATE ||
+		property == VideoContentProperty::FRAME_TYPE
 		) {
 
-		set<Time> check;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			check.insert ((*i)->full_length ());
-		}
-		
-		if (check.size() == 1) {
-			_full_length->set (cl.front()->full_length (), film_video_frame_rate);
-		} else {
-			_full_length->clear ();
-		}
+		update_full_length ();
 
 	} else if (property == ContentProperty::TRIM_START) {
 
-		set<Time> check;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			check.insert ((*i)->trim_start ());
+		set<ContentTime> check;
+		BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+			check.insert (i->trim_start ());
 		}
-		
+
 		if (check.size() == 1) {
-			_trim_start->set (cl.front()->trim_start (), film_video_frame_rate);
+			_trim_start->set (_parent->selected().front()->trim_start (), film_video_frame_rate);
 		} else {
 			_trim_start->clear ();
 		}
-		
+
 	} else if (property == ContentProperty::TRIM_END) {
 
-		set<Time> check;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			check.insert ((*i)->trim_end ());
+		set<ContentTime> check;
+		BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+			check.insert (i->trim_end ());
 		}
-		
+
 		if (check.size() == 1) {
-			_trim_end->set (cl.front()->trim_end (), film_video_frame_rate);
+			_trim_end->set (_parent->selected().front()->trim_end (), film_video_frame_rate);
 		} else {
-			_trim_end->set (0, 24);
+			_trim_end->clear ();
 		}
 	}
 
@@ -146,43 +261,48 @@ TimingPanel::film_content_changed (int property)
 		property == ContentProperty::LENGTH ||
 		property == ContentProperty::TRIM_START ||
 		property == ContentProperty::TRIM_END ||
-		property == VideoContentProperty::VIDEO_FRAME_RATE ||
-		property == VideoContentProperty::VIDEO_FRAME_TYPE
+		property == ContentProperty::VIDEO_FRAME_RATE ||
+		property == VideoContentProperty::FRAME_TYPE
 		) {
 
-		set<Time> check;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			check.insert ((*i)->length_after_trim ());
-		}
-		
-		if (check.size() == 1) {
-			_play_length->set (cl.front()->length_after_trim (), film_video_frame_rate);
-		} else {
-			_play_length->clear ();
-		}
+		update_play_length ();
 	}
 
-	if (property == VideoContentProperty::VIDEO_FRAME_RATE) {
-		set<float> check;
-		shared_ptr<VideoContent> vc;
-		for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-			vc = dynamic_pointer_cast<VideoContent> (*i);
-			if (vc) {
-				check.insert (vc->video_frame_rate ());
+	if (property == ContentProperty::VIDEO_FRAME_RATE) {
+		set<double> check_vc;
+		shared_ptr<const Content> content;
+		int count_ac = 0;
+		int count_sc = 0;
+		BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+			if (i->video && i->video_frame_rate()) {
+				check_vc.insert (i->video_frame_rate().get());
+				content = i;
+			}
+			if (i->audio && i->video_frame_rate()) {
+				++count_ac;
+				content = i;
+			}
+			if (i->subtitle && i->video_frame_rate()) {
+				++count_sc;
+				content = i;
 			}
+
 		}
-		if (check.size() == 1) {
-			_video_frame_rate->SetValue (std_to_wx (raw_convert<string> (vc->video_frame_rate (), 5)));
+
+		bool const single_frame_image_content = content && dynamic_pointer_cast<const ImageContent> (content) && content->number_of_paths() == 1;
+
+		if ((check_vc.size() == 1 || count_ac == 1 || count_sc == 1) && !single_frame_image_content) {
+			checked_set (_video_frame_rate, locale_convert<string> (content->video_frame_rate().get(), 5));
 			_video_frame_rate->Enable (true);
 		} else {
-			_video_frame_rate->SetValue ("");
+			checked_set (_video_frame_rate, wxT (""));
 			_video_frame_rate->Enable (false);
 		}
 	}
 
 	bool have_still = false;
-	for (ContentList::const_iterator i = cl.begin (); i != cl.end(); ++i) {
-		shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (*i);
+	BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+		shared_ptr<const ImageContent> ic = dynamic_pointer_cast<const ImageContent> (i);
 		if (ic && ic->still ()) {
 			have_still = true;
 		}
@@ -191,25 +311,27 @@ TimingPanel::film_content_changed (int property)
 	_full_length->set_editable (have_still);
 	_play_length->set_editable (!have_still);
 	_set_video_frame_rate->Enable (false);
+	setup_sensitivity ();
 }
 
 void
 TimingPanel::position_changed ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		(*i)->set_position (_position->get (_editor->film()->video_frame_rate ()));
+	DCPTime const pos = _position->get (_parent->film()->video_frame_rate ());
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		i->set_position (pos);
 	}
 }
 
 void
 TimingPanel::full_length_changed ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (*i);
+	int const vfr = _parent->film()->video_frame_rate ();
+	Frame const len = _full_length->get (vfr).frames_round (vfr);
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		shared_ptr<ImageContent> ic = dynamic_pointer_cast<ImageContent> (i);
 		if (ic && ic->still ()) {
-			ic->set_video_length (rint (_full_length->get (_editor->film()->video_frame_rate()) * ic->video_frame_rate() / TIME_HZ));
+			ic->video->set_length (len);
 		}
 	}
 }
@@ -217,28 +339,64 @@ TimingPanel::full_length_changed ()
 void
 TimingPanel::trim_start_changed ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		(*i)->set_trim_start (_trim_start->get (_editor->film()->video_frame_rate ()));
+	DCPTime const ph = _viewer->position ();
+
+	_viewer->set_coalesce_player_changes (true);
+
+	shared_ptr<Content> ref;
+	optional<FrameRateChange> ref_frc;
+	optional<DCPTime> ref_ph;
+
+	ContentTime const trim = _trim_start->get (_parent->film()->video_frame_rate ());
+
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		if (i->position() <= ph && ph < i->end()) {
+			/* The playhead is in i.  Use it as a reference to work out
+			   where to put the playhead post-trim; we're trying to keep the playhead
+			   at the same frame of content that we're looking at pre-trim.
+			*/
+			ref = i;
+			ref_frc = _parent->film()->active_frame_rate_change (i->position ());
+			ref_ph = ph - i->position() + DCPTime (i->trim_start(), ref_frc.get());
+		}
+
+		i->set_trim_start (trim);
 	}
-}
 
+	if (ref) {
+		_viewer->set_position (max (DCPTime(), ref_ph.get() + ref->position() - DCPTime (ref->trim_start(), ref_frc.get())));
+	}
+
+	_viewer->set_coalesce_player_changes (false);
+}
 
 void
 TimingPanel::trim_end_changed ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		(*i)->set_trim_end (_trim_end->get (_editor->film()->video_frame_rate ()));
+	_viewer->set_coalesce_player_changes (true);
+
+	ContentTime const trim = _trim_end->get (_parent->film()->video_frame_rate ());
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		i->set_trim_end (trim);
 	}
+
+	/* XXX: maybe playhead-off-the-end-of-the-film should be handled elsewhere */
+	if (_viewer->position() >= _parent->film()->length()) {
+		_viewer->set_position (_parent->film()->length() - DCPTime::from_frames (1, _parent->film()->video_frame_rate()));
+	}
+
+	_viewer->set_coalesce_player_changes (true);
 }
 
 void
 TimingPanel::play_length_changed ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		(*i)->set_trim_end ((*i)->full_length() - _play_length->get (_editor->film()->video_frame_rate()) - (*i)->trim_start());
+	DCPTime const play_length = _play_length->get (_parent->film()->video_frame_rate());
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		FrameRateChange const frc = _parent->film()->active_frame_rate_change (i->position ());
+		i->set_trim_end (
+			ContentTime (max(DCPTime(), i->full_length() - play_length), frc) - i->trim_start ()
+			);
 	}
 }
 
@@ -251,31 +409,127 @@ TimingPanel::video_frame_rate_changed ()
 void
 TimingPanel::set_video_frame_rate ()
 {
-	ContentList c = _editor->selected_content ();
-	for (ContentList::iterator i = c.begin(); i != c.end(); ++i) {
-		shared_ptr<VideoContent> vc = dynamic_pointer_cast<VideoContent> (*i);
-		if (vc) {
-			vc->set_video_frame_rate (raw_convert<float> (wx_to_std (_video_frame_rate->GetValue ())));
+	optional<double> fr;
+	if (_video_frame_rate->GetValue() != wxT("")) {
+		fr = locale_convert<double> (wx_to_std (_video_frame_rate->GetValue ()));
+	}
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		if (fr) {
+			i->set_video_frame_rate (*fr);
+		} else {
+			i->unset_video_frame_rate ();
 		}
-		_set_video_frame_rate->Enable (false);
 	}
+
+	_set_video_frame_rate->Enable (false);
 }
 
 void
 TimingPanel::content_selection_changed ()
 {
-	bool const e = !_editor->selected_content().empty ();
+	setup_sensitivity ();
+
+	film_content_changed (ContentProperty::POSITION);
+	film_content_changed (ContentProperty::LENGTH);
+	film_content_changed (ContentProperty::TRIM_START);
+	film_content_changed (ContentProperty::TRIM_END);
+	film_content_changed (ContentProperty::VIDEO_FRAME_RATE);
+}
+
+void
+TimingPanel::film_changed (Film::Property p)
+{
+	if (p == Film::VIDEO_FRAME_RATE) {
+		update_full_length ();
+		update_play_length ();
+	}
+}
+
+void
+TimingPanel::trim_start_to_playhead_clicked ()
+{
+	shared_ptr<const Film> film = _parent->film ();
+	DCPTime const ph = _viewer->position().floor (film->video_frame_rate ());
+	optional<DCPTime> new_ph;
+
+	_viewer->set_coalesce_player_changes (true);
+
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		if (i->position() < ph && ph < i->end ()) {
+			FrameRateChange const frc = film->active_frame_rate_change (i->position ());
+			i->set_trim_start (i->trim_start() + ContentTime (ph - i->position (), frc));
+			new_ph = i->position ();
+		}
+	}
+
+	if (new_ph) {
+		_viewer->set_position (new_ph.get());
+	}
+
+	_viewer->set_coalesce_player_changes (false);
+}
+
+void
+TimingPanel::trim_end_to_playhead_clicked ()
+{
+	shared_ptr<const Film> film = _parent->film ();
+	DCPTime const ph = _viewer->position().floor (film->video_frame_rate ());
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		if (i->position() < ph && ph < i->end ()) {
+			FrameRateChange const frc = film->active_frame_rate_change (i->position ());
+			i->set_trim_end (ContentTime (i->position() + i->full_length() - ph - DCPTime::from_frames (1, frc.dcp), frc) - i->trim_start());
+		}
+	}
+}
+
+void
+TimingPanel::setup_sensitivity ()
+{
+	bool const e = !_parent->selected().empty ();
 
 	_position->Enable (e);
+	_move_to_start_of_reel->Enable (e);
 	_full_length->Enable (e);
 	_trim_start->Enable (e);
 	_trim_end->Enable (e);
 	_play_length->Enable (e);
 	_video_frame_rate->Enable (e);
-	
-	film_content_changed (ContentProperty::POSITION);
-	film_content_changed (ContentProperty::LENGTH);
-	film_content_changed (ContentProperty::TRIM_START);
-	film_content_changed (ContentProperty::TRIM_END);
-	film_content_changed (VideoContentProperty::VIDEO_FRAME_RATE);
+
+	DCPTime const ph = _viewer->position ();
+	bool any_over_ph = false;
+	BOOST_FOREACH (shared_ptr<const Content> i, _parent->selected ()) {
+		if (i->position() <= ph && ph < i->end()) {
+			any_over_ph = true;
+		}
+	}
+
+	_trim_start_to_playhead->Enable (any_over_ph);
+	_trim_end_to_playhead->Enable (any_over_ph);
+}
+
+void
+TimingPanel::move_to_start_of_reel_clicked ()
+{
+	/* Find common position of all selected content, if it exists */
+
+	optional<DCPTime> position;
+	BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+		if (!position) {
+			position = i->position();
+		} else {
+			if (position.get() != i->position()) {
+				position.reset ();
+				break;
+			}
+		}
+	}
+
+	MoveToDialog* d = new MoveToDialog (this, position, _parent->film());
+
+	if (d->ShowModal() == wxID_OK) {
+		BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
+			i->set_position (d->position ());
+		}
+	}
+	d->Destroy ();
 }