+void
+TimeAxisViewItem::set_frame_gradient ()
+{
+ if (UIConfiguration::instance().get_timeline_item_gradient_depth() == 0.0) {
+ frame->set_gradient (ArdourCanvas::Fill::StopList (), 0);
+ return;
+ }
+
+ ArdourCanvas::Fill::StopList stops;
+ double r, g, b, a;
+ double h, s, v;
+ ArdourCanvas::Color f (get_fill_color());
+
+ /* need to get alpha value */
+ ArdourCanvas::color_to_rgba (f, r, g, b, a);
+
+ stops.push_back (std::make_pair (0.0, f));
+
+ /* now a darker version */
+
+ ArdourCanvas::color_to_hsv (f, h, s, v);
+
+ v = min (1.0, v * (1.0 - UIConfiguration::instance().get_timeline_item_gradient_depth()));
+
+ ArdourCanvas::Color darker = ArdourCanvas::hsva_to_color (h, s, v, a);
+ stops.push_back (std::make_pair (1.0, darker));
+
+ frame->set_gradient (stops, true);
+}
+