(No version information available, might only be in SVN)
Enum class that specifies the type of antialiasing to do when rendering text or shapes.
CairoAntialias::MODE_DEFAULT
     Use the default antialiasing for the subsystem and target device
CairoAntialias::MODE_NONE
     Use a bilevel alpha mask
CairoAntialias::MODE_GRAY
     Perform single-color antialiasing (using shades of gray for black text on a white background, for example).
CairoAntialias::MODE_SUBPIXEL
     Perform antialiasing by taking advantage of the order of subpixel elements on devices such as LCD panels.