D21948: [colorcorrection] Add "Constant" mode

[Vlad Zagorodniy]

zzag created this revision.
zzag added a reviewer: KWin.
Herald added a project: KWin.
Herald added a subscriber: kwin.
zzag requested review of this revision.

REVISION SUMMARY
  Currently, the Night Color manager supports three operation modes:
  
  - Automatic: in this mode, screen color temperature is computed based on
  
  the current position of the Sun. In order to calculate sunrise & sunset
  times, the manager needs coordinates of the user, which are provided by
  Plasma;
  
  - Location: this mode is very similar to the Automatic, except one minor
  
  detail: user needs to provide his/her/their location. This mode can be
  very useful if coordinates provided by Plasma are incorrect;
  
  - Timings: unfortunately we can't compute timings of the Sun for people
  
  living near Earth poles. This mode allows the user to specify timings of
  sunrise and sunset as well the transition time.
  
  This change introduces another mode, called Constant. With this mode the
  screen color temperature is constant throughout the day. The new mode
  can be useful for people wishing constant screen color temperature or
  just for people living near Earth's North or South poles.

REPOSITORY
  R108 KWin

BRANCH
  native-redshift

REVISION DETAIL
  https://phabricator.kde.org/D21948

AFFECTED FILES
  autotests/integration/colorcorrect_nightcolor_test.cpp
  colorcorrection/colorcorrect_settings.kcfg
  colorcorrection/manager.cpp
  colorcorrection/manager.h

To: zzag, #kwin
Cc: kwin, LeGast00n, sbergeron, jraleigh, fbampaloukas, GB_2, mkulinski, ragreen, jackyalcine, Pitel, iodelay, bwowk, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart
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