+void
+Timeline::mouse_moved (wxMouseEvent& ev)
+{
+ if (!_left_down) {
+ return;
+ }
+
+ set_position_from_event (ev);
+}
+
+void
+Timeline::right_down (wxMouseEvent& ev)
+{
+ shared_ptr<View> view = event_to_view (ev);
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (view);
+ if (!cv) {
+ return;
+ }
+
+ if (!cv->selected ()) {
+ clear_selection ();
+ cv->set_selected (true);
+ }
+
+ _menu.popup (_film, selected_content (), ev.GetPosition ());
+}
+
+void
+Timeline::set_position_from_event (wxMouseEvent& ev)
+{
+ if (!_pixels_per_time_unit) {
+ return;
+ }
+
+ double const pptu = _pixels_per_time_unit.get ();
+
+ wxPoint const p = ev.GetPosition();
+
+ if (!_first_move) {
+ /* We haven't moved yet; in that case, we must move the mouse some reasonable distance
+ before the drag is considered to have started.
+ */
+ int const dist = sqrt (pow (p.x - _down_point.x, 2) + pow (p.y - _down_point.y, 2));
+ if (dist < 8) {
+ return;
+ }
+ _first_move = true;
+ }
+
+ if (!_down_view) {
+ return;
+ }
+
+ Time new_position = _down_view_position + (p.x - _down_point.x) / pptu;
+
+ if (_snap) {
+
+ bool first = true;
+ Time nearest_distance = TIME_MAX;
+ Time nearest_new_position = TIME_MAX;
+
+ /* Find the nearest content edge; this is inefficient */
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (!cv || cv == _down_view) {
+ continue;
+ }
+
+ {
+ /* Snap starts to ends */
+ Time const d = abs (cv->content()->end() - new_position);
+ if (first || d < nearest_distance) {
+ nearest_distance = d;
+ nearest_new_position = cv->content()->end();
+ }
+ }
+
+ {
+ /* Snap ends to starts */
+ Time const d = abs (cv->content()->position() - (new_position + _down_view->content()->length_after_trim()));
+ if (d < nearest_distance) {
+ nearest_distance = d;
+ nearest_new_position = cv->content()->position() - _down_view->content()->length_after_trim ();
+ }
+ }
+
+ first = false;
+ }
+
+ if (!first) {
+ /* Snap if it's close; `close' means within a proportion of the time on the timeline */
+ if (nearest_distance < (width() / pptu) / 32) {
+ new_position = nearest_new_position;
+ }
+ }
+ }
+
+ if (new_position < 0) {
+ new_position = 0;
+ }
+
+ _down_view->content()->set_position (new_position);
+
+ shared_ptr<Film> film = _film.lock ();
+ assert (film);
+ film->set_sequence_video (false);
+}
+
+void
+Timeline::force_redraw (dcpomatic::Rect<int> const & r)
+{
+ RefreshRect (wxRect (r.x, r.y, r.width, r.height), false);
+}
+
+shared_ptr<const Film>
+Timeline::film () const
+{
+ return _film.lock ();
+}
+
+void
+Timeline::resized ()
+{
+ setup_pixels_per_time_unit ();
+}
+
+void
+Timeline::clear_selection ()
+{
+ for (ViewList::iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (cv) {
+ cv->set_selected (false);
+ }
+ }
+}
+
+Timeline::ContentViewList
+Timeline::selected_views () const
+{
+ ContentViewList sel;
+
+ for (ViewList::const_iterator i = _views.begin(); i != _views.end(); ++i) {
+ shared_ptr<ContentView> cv = dynamic_pointer_cast<ContentView> (*i);
+ if (cv && cv->selected()) {
+ sel.push_back (cv);
+ }
+ }
+
+ return sel;
+}
+
+ContentList
+Timeline::selected_content () const
+{
+ ContentList sel;
+ ContentViewList views = selected_views ();
+
+ for (ContentViewList::const_iterator i = views.begin(); i != views.end(); ++i) {
+ sel.push_back ((*i)->content ());
+ }
+
+ return sel;
+}