work towards shifting functions from timelineview to timelinewidget

app/widget/timelineview/timelinescaledobject.cpp

@@ -6,7 +6,32 @@ TimelineScaledObject::TimelineScaledObject() :
 
 }
 
-double TimelineScaledObject::TimeToScreenCoord(const rational &time)
+const rational &TimelineScaledObject::timebase()
+{
+  return timebase_;
+}
+
+const double &TimelineScaledObject::timebase_dbl()
+{
+  return timebase_dbl_;
+}
+
+double TimelineScaledObject::TimeToScene(const rational &time)
 {
   return time.toDouble() * scale_;
 }
+
+rational TimelineScaledObject::SceneToTime(const double &x)
+{
+  // Adjust screen point by scale and timebase
+  qint64 scaled_x_mvmt = qRound64(x / scale_ / timebase_dbl_);
+
+  // Return a time in the timebase
+  return rational(scaled_x_mvmt * timebase_.numerator(), timebase_.denominator());
+}
+
+void TimelineScaledObject::SetTimebaseInternal(const rational &timebase)
+{
+  timebase_ = timebase;
+  timebase_dbl_ = timebase_.toDouble();
+}