D17829: Make sure we don't override QIcon::themeName when we should not

[Aleix Pol Gonzalez]

apol created this revision.
apol added reviewers: Kirigami, mart.
Herald added a project: Kirigami.
Herald added a subscriber: plasma-devel.
apol requested review of this revision.

REVISION SUMMARY
  KirigamiPlugin is lives in a separate thread than QApplication and themeName initialization is a race condition.
  This way at least we limit the initialisation to non-linux desktop systems.

TEST PLAN
  Now kalgebramobile and kirigamigallery show the icons on my system

REPOSITORY
  R169 Kirigami

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D17829

AFFECTED FILES
  src/kirigamiplugin.cpp

To: apol, #kirigami, mart
Cc: plasma-devel, dkardarakos, apol, davidedmundson, mart, hein
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