public static NSFont ToNsFont (this Font font)
{
if (font == null)
return NSFont.SystemFontOfSize (NSFont.SystemFontSize);
NSFontManager fontManager = NSFontManager.SharedFontManager;
NSFont theFont = fontManager.FontWithFamily (font.Name, getFontTraits (font), 0, font.Size);
return theFont;
}
private static NSFontTraitMask getFontTraits (Font font)