func patternSetSubtypeID(p *C.cairo_pattern_t, s subtypeID) {
if fontType(C.cairo_pattern_get_type(p)) != PatternTypeRasterSource {
panic("pattern is not a raster pattern")
}
if C.cairo_pattern_get_user_data(p, stkey) != nil {
panic("pattern already has subtype set")
}
C.cairo_pattern_set_user_data(p, stkey, s.c(), free)
}
func patternGetSubtypeID(p *C.cairo_pattern_t) subtypeID {
if fontType(C.cairo_pattern_get_type(p)) != PatternTypeRasterSource {
panic("pattern is not a raster pattern")
}
ptr := C.cairo_pattern_get_user_data(p, stkey)
if ptr == nil {
panic("no subtype set: pattern not registered")
}
return subtypeID(ctoint(ptr))
}
// cairo_pattern_type_t cairo_pattern_get_type (cairo_pattern_t *pattern);
func (self *Pattern) GetType() PatternType {
return PatternType(C.cairo_pattern_get_type(self.pattern))
}
func getPatternType(p *C.cairo_pattern_t) patternType {
return patternType(C.cairo_pattern_get_type(p))
}
