Pattern.setExtend
void setExtend(cairo.types.Extend extend)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.types.Extend.None for surface patterns and cairo.types.Extend.Pad for gradient patterns.
Parameters
extend | a #cairo_extend_t describing how the area outside of the pattern will be drawn |