+
+ cairo_text_extents_t ext;
+ cairo_text_extents (cr, bc.bundle->channel_name(bc.channel).c_str(), &ext);
+ double const off = (grid_spacing() - ext.height) / 2;
+
+ Gdk::Color textcolor;
+ ARDOUR_UI_UTILS::set_color_from_rgba(textcolor, Gtkmm2ext::contrasting_text_color(ARDOUR_UI_UTILS::gdk_color_to_rgba(bg_colour)));
+ set_source_rgb (cr, textcolor);