protected override void FillContextMenu(ContextMenu contextMenu)
{
int beat = (int)noteArea.GetHorizontalMousePositionInBeats();
int midiNote = noteArea.GetVerticalMousePositionInMidiNote();
contextMenu.AddItem("Fit vertical", () => noteArea.FitViewportVerticalToNotes());
List <Note> selectedNotes = selectionController.GetSelectedNotes();
if (selectedNotes.Count > 0)
{
contextMenu.AddItem("Fit horizontal to selection", () => noteArea.FitViewportHorizontalToNotes(selectedNotes));
}
contextMenu.AddSeparator();
contextMenu.AddItem("Add note", () => addNoteAction.ExecuteAndNotify(songMeta, beat, midiNote));
}