func cNew(s *C.cairo_surface_t) (cairo.Surface, error) {
//Note that if the surface was created with a Writer we have no way of
//getting it here but that's okay as long as the original reference lives on.
S := Surface{
XtensionVectorSurface: cairo.NewXtensionVectorSurface(s),
}
return S, S.Err()
}
//New creates a new SVG surface that writes to writer.
//
//If writer needs to be flushed or closed, that is the responsibility
//of the caller.
//
//The parameters width and height are in the unit of a typographical point
//(1 point = 1/72 inch).
//
//Originally cairo_svg_surface_create_for_stream.
func New(w io.Writer, width, height float64) (Surface, error) {
wp := cairo.XtensionWrapWriter(w)
svg := C.cairo_svg_surface_create_for_stream(cairo.XtensionCairoWriteFuncT, wp, C.double(width), C.double(height))
s := Surface{
XtensionVectorSurface: cairo.NewXtensionVectorSurface(svg),
}
s.XtensionRegisterWriter(wp)
return s, s.Err()
}