This is a convenience function for creating a pattern from surface
and setting it as the source in cr with cairo_set_source().
The x and y parameters give the user-space coordinate at which
the surface origin should appear. (The surface origin is its
upper-left corner before any transformation has been applied.) The
x and y parameters are negated and then set as translation values
in the pattern matrix.
Other than the initial translation pattern matrix, as described
above, all other pattern attributes, (such as its extend mode), are
set to the default values as in cairo_pattern_create_for_surface().
The resulting pattern can be queried with cairo_get_source() so
that these attributes can be modified if desired, (eg. to create a
repeating pattern with cairo_pattern_set_extend()).
Since 1.0
This is a convenience function for creating a pattern from surface and setting it as the source in cr with cairo_set_source(). The x and y parameters give the user-space coordinate at which the surface origin should appear. (The surface origin is its upper-left corner before any transformation has been applied.) The x and y parameters are negated and then set as translation values in the pattern matrix. Other than the initial translation pattern matrix, as described above, all other pattern attributes, (such as its extend mode), are set to the default values as in cairo_pattern_create_for_surface(). The resulting pattern can be queried with cairo_get_source() so that these attributes can be modified if desired, (eg. to create a repeating pattern with cairo_pattern_set_extend()). Since 1.0