[Differential] [Request, 241 lines] D3480: [effects] Add a colorpicker effect

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma on Wayland, broulik.
Restricted Application added subscribers: kwin, plasma-devel.
Restricted Application added projects: Plasma on Wayland, KWin.

REVISION SUMMARY
  The effect exports itself to DBus as object "/ColorPicker" and provides
  an own interface "org.kde.kwin.ColorPicker".
  
  It has one exported method to DBus "pick" which returns a QColor. When
  invoked an interactive position picking selection is started. If it ends
  the effect reads the color value at the picked position from the OpenGL
  color buffer.
  
  This implements https://phabricator.kde.org/T4568.

REPOSITORY
  rKWIN KWin

BRANCH
  color-picker-effect

REVISION DETAIL
  https://phabricator.kde.org/D3480

AFFECTED FILES
  autotests/test_builtin_effectloader.cpp
  autotests/test_plugin_effectloader.cpp
  autotests/test_scripted_effectloader.cpp
  effects/CMakeLists.txt
  effects/colorpicker/colorpicker.cpp
  effects/colorpicker/colorpicker.h
  effects/effect_builtins.cpp
  effects/effect_builtins.h

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: graesslin, #kwin, #plasma_on_wayland, broulik
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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