D25837: [Style KCM] Horizontally center widget style preview

[Kai Uwe Broulik]

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

REVISION SUMMARY
  In case the widget style is too wide. The delegates are already quite large as they is so I'd prefer not having them any bigger (or dynamically adjust), or else I will only be able to fix a single column of previews now.

TEST PLAN
  Before
  F7807399: Screenshot_20191210_113044.png <https://phabricator.kde.org/F7807399>
  After
  F7807400: Screenshot_20191210_113020.png <https://phabricator.kde.org/F7807400>

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D25837

AFFECTED FILES
  kcms/style/package/contents/ui/main.qml

To: broulik, #plasma, #vdg
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
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