Class e.p.p.s.RotationControl(Control):

Part of elisa.plugins.poblesec.slideshow_controls View In Hierarchy

Control for Image rotation. This requires the database
plugin. When it's activated, it:

- updates the orientation field of the Image in db
- rotates clock-wisee the various drawables showing the image on the UI

When the 90° CCW angle is reached, the next rotation is the
'original' orientation of the image.

Its L{slave} passed to the constructor must be of type
L{elisa.plugins.poblesec.player_slideshow.PlayerController}.

Activating the action runs the action code attached to the control.
For example it can be the code executed when a button is clicked.

Control implementations have to override this method.

@rtype L{elisa.core.utils.defer.Deferred}