D7853: Add a dedicated X11EventFilter for forwarding property events to the effect system

[Martin Flöser]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma.
Restricted Application added a project: KWin.
Restricted Application added subscribers: kwin, plasma-devel.

REVISION SUMMARY
  So far both Workspace and Toplevel emitted signals for every property
  notify event on the root window and the respective Toplevel windows. The
  signals were only used in EffectsHandlerImpl to forward to the effect
  system in case the property which changed is registered by an effect.
  
  This change introduces a dedicated event filter for this which is only
  created in EffectsHandlerImpl in case an X11 connection is available. It
  supports a restart of the X11 system.
  
  The signals used so far are removed from Workspace and Toplevel.

REPOSITORY
  R108 KWin

BRANCH
  window-property-x11-filter

REVISION DETAIL
  https://phabricator.kde.org/D7853

AFFECTED FILES
  CMakeLists.txt
  effects.cpp
  effects.h
  events.cpp
  toplevel.h
  window_property_notify_x11_filter.cpp
  window_property_notify_x11_filter.h
  workspace.h

To: graesslin, #kwin, #plasma
Cc: plasma-devel, kwin, bwowk, ZrenBot, progwolff, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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