Sets the mode to be used for drawing outside the area of a pattern.
See cairo_extend_t for details on the semantics of each extend
strategy.
The default extend mode is CAIRO_EXTEND_NONE for surface patterns
and CAIRO_EXTEND_PAD for gradient patterns.
Sets the mode to be used for drawing outside the area of a pattern. See cairo_extend_t for details on the semantics of each extend strategy. The default extend mode is CAIRO_EXTEND_NONE for surface patterns and CAIRO_EXTEND_PAD for gradient patterns.