Prevent setting of negative trims by changing play length.

diff --git a/src/wx/timing_panel.cc b/src/wx/timing_panel.cc
index 653e4466955e55e880683cb054ee2daaa84afad7..4006c5d3e7625de67e7124172c1893508572c95f 100644 (file)
--- a/src/wx/timing_panel.cc
+++ b/src/wx/timing_panel.cc
@@ -395,7 +395,7 @@ TimingPanel::play_length_changed ()
        BOOST_FOREACH (shared_ptr<Content> i, _parent->selected ()) {
                FrameRateChange const frc = _parent->film()->active_frame_rate_change (i->position ());
                i->set_trim_end (
-                       ContentTime (i->full_length() - play_length, frc) - i->trim_start ()
+                       ContentTime (max(DCPTime(), i->full_length() - play_length), frc) - i->trim_start ()
                        );
        }
 }