These enumeration values describe the possible transitions when the child widget of a gtk-revealer widget is shown or hidden.

(define-g-enum "GtkRevealerTransitionType" gtk-revealer-transition-type
  (:export t
   :type-initializer "gtk_revealer_transition_type_get_type")
  (:none 0)
  (:crossfade 1)
  (:slide-right 2)
  (:slide-left 3)
  (:slide-up 4)
  (:slide-down 5))  

:none

No transition

:crossfade

Fade in.

:slide-right

Slide in from the left.

:slide-left

Slide in from the right.

:slide-up

Slide in from the bottom.

:slide-down

Slide in from the top.