(define-boxed DimensionData
  (in-module "Rsvg")
  (c-name "RsvgDimensionData")
  (import-header "librsvg/rsvg.h")
  (fields
    '("int" "width")
    '("int" "height")
    '("gdouble" "em")
    '("gdouble" "ex")
  )
)

