// void cairo_show_text_glyphs(cairo_t *cr, const char *utf8, int utf8_len,
// const cairo_glyph_t *glyphs, int num_glyphs,
// const cairo_text_cluster_t *clusters, int num_clusters,
// cairo_text_cluster_flags_t cluster_flags );
func (self *Surface) ShowTextGlyphs(text string, glyphs []Glyph, clusters []TextCluster, flag TextClusterFlag) {
utf8 := C.CString(text)
defer C.free(unsafe.Pointer(utf8))
C.cairo_show_text_glyphs(self.context, utf8, C.int(len(text)),
(*C.cairo_glyph_t)(unsafe.Pointer(&glyphs[0])), C.int(len(glyphs)),
(*C.cairo_text_cluster_t)(unsafe.Pointer(&clusters[0])), C.int(len(clusters)),
C.cairo_text_cluster_flags_t(flag))
}
func (t TextClusterFlags) c() C.cairo_text_cluster_flags_t {
return C.cairo_text_cluster_flags_t(t)
}