+void
+Gtkmm2ext::rounded_left_half_rectangle (cairo_t* cr, double x, double y, double w, double h, double r)
+{
+ double degrees = M_PI / 180.0;
+
+ cairo_new_sub_path (cr);
+ cairo_line_to (cr, x+w, y); // tr
+ cairo_line_to (cr, x+w, y + h); // br
+ cairo_arc (cr, x + r, y + h - r, r, 90 * degrees, 180 * degrees); //bl
+ cairo_arc (cr, x + r, y + r, r, 180 * degrees, 270 * degrees); //tl
+ cairo_close_path (cr);
+}
+