D23567: [Colors KCM] Don't explicitly reload KWin's configuration

[Kai Uwe Broulik]

broulik created this revision.
broulik added reviewers: Plasma, KWin.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
broulik requested review of this revision.

REVISION SUMMARY
  KWin watches decoration palette changes on its own.
  When Plasma changes its colorscheme it will send new background contrast information to KWin anyway.
  plasma-integration listens to color scheme changes and updates the `QApplication` palette,

TEST PLAN
  This code has been in there for over a decade, likely having been neccessary before KDecoration2 was around?
  
  Changed color scheme:
  
  - No longer have KWin re-initalize its compositor, the overall color scheme change feels a lot less jarring now
  - Decoration color updates immediately
  - Context menu on decoration updates immediately
  - Tabbox stuff updates immediately (plasma theme)
  - The panel flickers funnily during the change but that might have just previously been covered by the fact that KWin drops some frames while reinitializing the compositor?

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D23567

AFFECTED FILES
  kcms/colors/colors.cpp

To: broulik, #plasma, #kwin
Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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