getFontDesc
Gets the currently-selected font.
Note that this can be a different string than what you set with method@Gtk.FontChooser.set_font, as the font chooser widget may normalize font names and thus return a string with a different structure. For example, “Helvetica Italic Bold 12” could be normalized to “Helvetica Bold Italic 12”.
Use method@Pango.FontDescription.equal if you want to compare two font descriptions.
Return
A PangoFontDescription
for the current font