highlight area below automation lanes

gtk2_ardour/automation_line.cc

@@ -86,6 +86,7 @@ AutomationLine::AutomationLine (const string&                              name,
 	, _parent_group (parent)
 	, _offset (0)
 	, _maximum_time (max_framepos)
+	, _fill (false)
 	, _desc (desc)
 {
 	if (converter) {
@@ -229,6 +230,11 @@ AutomationLine::set_height (guint32 h)
 			(*i)->set_size (bsz);
 		}
 
+		if (_fill) {
+			line->set_fill_y1 (_height);
+		} else {
+			line->set_fill_y1 (0);
+		}
 		reset ();
 	}
 }
@@ -238,6 +244,7 @@ AutomationLine::set_line_color (uint32_t color)
 {
 	_line_color = color;
 	line->set_outline_color (color);
+	line->set_fill_color ((color & 0xffff00) + 80); // XXX TODO configurable transparency
 }
 
 void

gtk2_ardour/automation_line.h

@@ -73,6 +73,7 @@ public:
 	void queue_reset ();
 	void reset ();
 	void clear ();
+	void set_fill (bool f) { _fill = f; } // owner needs to call set_height
 
 	void set_selected_points (PointSelection const &);
 	void get_selectables (ARDOUR::framepos_t, ARDOUR::framepos_t, double, double, std::list<Selectable*>&);
@@ -236,6 +237,8 @@ private:
 	/** maximum time that a point on this line can be at, relative to the position of its region or start of its track */
 	ARDOUR::framecnt_t _maximum_time;
 
+	bool _fill;
+
 	const ARDOUR::ParameterDescriptor _desc;
 
 	friend class AudioRegionGainLine;

gtk2_ardour/automation_time_axis.cc

@@ -270,6 +270,7 @@ AutomationTimeAxisView::AutomationTimeAxisView (
 			);
 
 		line->set_line_color (UIConfiguration::instance().color ("processor automation line"));
+		line->set_fill (true);
 		line->queue_reset ();
 		add_line (line);
 	}