+/** Given a note in our parent region (ie the actual MidiRegionView), find our
+ * representation of it.
+ * @return Our Event, or 0 if not found.
+ */
+
+MidiGhostRegion::Event *
+MidiGhostRegion::find_event (ArdourCanvas::CanvasNoteEvent* parent)
+{
+ /* we are using _optimization_iterator to speed up the common case where a caller
+ is going through our notes in order.
+ */
+
+ if (_optimization_iterator != events.end()) {
+ ++_optimization_iterator;
+ }
+
+ if (_optimization_iterator != events.end() && (*_optimization_iterator)->event == parent) {
+ return *_optimization_iterator;
+ }
+
+ for (_optimization_iterator = events.begin(); _optimization_iterator != events.end(); ++_optimization_iterator) {
+ if ((*_optimization_iterator)->event == parent) {
+ return *_optimization_iterator;
+ }
+ }
+
+ return 0;
+}