the user data to be passed to all callbacks
content type for the pixel data that will be returned. Knowing the content type ahead of time is used for analysing the operation and picking the appropriate rendering path.
maximum size of the sample area
maximum size of the sample area
a newly created #cairo_pattern_t. Free with cairo.pattern.Pattern.destroy when you are done using it.
Creates a new user pattern for providing pixel data.
Use the setter functions to associate callbacks with the returned pattern. The only mandatory callback is acquire.