+void
+Mixer_UI::scroll_left ()
+{
+ Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
+ /* stupid GTK: can't rely on clamping across versions */
+ scroller.get_hscrollbar()->set_value (max (adj->get_lower(), adj->get_value() - adj->get_step_increment()));
+}
+
+void
+Mixer_UI::scroll_right ()
+{
+ Adjustment* adj = scroller.get_hscrollbar()->get_adjustment();
+ /* stupid GTK: can't rely on clamping across versions */
+ scroller.get_hscrollbar()->set_value (min (adj->get_upper(), adj->get_value() + adj->get_step_increment()));
+}