D16453: [effects/dialogparent] React to active full screen effect changes

zzag created this revision.
zzag added a reviewer: KWin.
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REVISION SUMMARY
  If a full screen effect has been activated, we need to brighten main
  windows because the full screen effect can dim windows on its own
  (one such effect is the Present Windows, for example).
  
  If the full screen effect is no longer active, we need to dim main
  windows back.

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D16453

AFFECTED FILES
  effects/dialogparent/package/contents/code/main.js

To: zzag, #kwin
Cc: kwin, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart