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