The possible rotations which can be passed to the gdk-pixbuf-rotate-simple function. To make them easier to use, their numerical values are the actual degrees.

(define-g-enum "GdkPixbufRotation" gdk-pixbuf-rotation
  (:export t
   :type-initializer "gdk_pixbuf_rotation_get_type")
  (:none 0)
  (:counterclockwise 90)
  (:upsidedown 180)
  (:clockwise 270))  

:none

No rotation.

:counterclockwise

Rotate by 90 degrees.

:upsidedown

Rotate by 180 degrees.

:clockwise

Rotate by 270 degrees.