[WidgetExplorer] Fix blurry previews

Authored by filipf on May 5 2019, 11:34 AM.

Description

[WidgetExplorer] Fix blurry previews

Summary:
Round the cell width to avoid getting blurry previews.

NOTE: It also seems further improvements could be done for the icons themselves (advice, tips?)

Subscribers: plasma-devel

Tags: Plasma

Differential Revision: https://phabricator.kde.org/D21030

Details