Helper effect for KScreen integration
Review Request #110661 - Created May 27, 2013 and submitted
Helper effect for KScreen integration This effect is controlled by KScreen. It fades out all windows when KScreen requests this and gives feedback to KScreen once all windows are faded out. This allows KScreen to adjust the screens in a flicker free way. Security consideration: the effect is controlled through a root window property, so it is possible to turn the screen black with a command line command. This can render the system unusable. Possible solution: forced fade-in after a defined timeout.