Fix hidden notes at trimmed region start.

diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index b64c116b3f9f0816749fe07f3fc4faaf8d7b5e34..ad7b618f5d3c79cf1b3b429bb5717de7f8318939 100644 (file)
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -1657,8 +1657,12 @@ MidiRegionView::start_playing_midi_chord (vector<boost::shared_ptr<NoteType> > n
 bool
 MidiRegionView::note_in_region_range (const boost::shared_ptr<NoteType> note, bool& visible) const
 {
+       /* This is imprecise due to all the conversion conversion involved, so only
+          hide notes if they seem to start more than one tick before the start. */
+       const framecnt_t tick_frames       = Evoral::Beats::tick().to_ticks(trackview.session()->frame_rate());
        const framepos_t note_start_frames = source_beats_to_region_frames (note->time());
-       bool outside = (note_start_frames  < 0) || (note_start_frames > _region->last_frame());
+       const bool       outside           = ((note_start_frames <= -tick_frames) ||
+                                             (note_start_frames > _region->last_frame()));
 
        visible = (note->note() >= midi_stream_view()->lowest_note()) &&
                (note->note() <= midi_stream_view()->highest_note());