std::string fit_to_pixels (const std::string&, int pixel_width, Pango::FontDescription& font, int& actual_width, bool with_ellipses = false);
std::pair<std::string, double> fit_to_pixels (cairo_t *, std::string, double);
std::string fit_to_pixels (const std::string&, int pixel_width, Pango::FontDescription& font, int& actual_width, bool with_ellipses = false);
std::pair<std::string, double> fit_to_pixels (cairo_t *, std::string, double);