Checks whether rectangle is inside, outside or partially contained in region Since 1.10
a cairo_rectangle_int_t
CAIRO_REGION_OVERLAP_IN if rectangle is entirely inside region, CAIRO_REGION_OVERLAP_OUT if rectangle is entirely outside region, or CAIRO_REGION_OVERLAP_PART if rectangle is partially inside and partially outside region.
See Implementation
Checks whether rectangle is inside, outside or partially contained in region Since 1.10