broulik created this revision. broulik added a reviewer: Plasma. Herald added a project: Plasma. Herald added a subscriber: plasma-devel. broulik requested review of this revision.
REVISION SUMMARY Since there isn't a real window, the widgets think they're inactive, leading to dull appearance. Also, while at it create the `QPalette` only once. `KColorScheme::applicationPalette` parses configuration and is super slow. Doing it only once significantly speeds up the KCM. TEST PLAN Before F7788650: Screenshot_20191128_161303.png <https://phabricator.kde.org/F7788650> After F7788649: Screenshot_20191128_161218.png <https://phabricator.kde.org/F7788649> REPOSITORY R119 Plasma Desktop REVISION DETAIL https://phabricator.kde.org/D25594 AFFECTED FILES kcms/style/previewitem.cpp To: broulik, #plasma Cc: plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, ZrenBot, ngraham, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart
