Diffusion Krita 3a3010ca88ff

Add an invert button to the level filter widget

Authored by rempt on Dec 8 2017, 11:02 AM.

Description

Add an invert button to the level filter widget

Differential Revision: https://phabricator.kde.org/D9052
BUG:375842
CCMAIL:vincentl13x@gmail.com

Patch by Wu Weilin -- thanks!