Make the Window Decoration themes' Configure buttons more obvious
As documented via bug reports and online support requests, many users have difficulty learning that window decorations are customizable, because they don't notice or understand the little icon-only button in the bottom-left corner of each theme preview.
This patch centers the buttons and adds text including the theme name , making it obvious what the buttons are for.
Also, clicking on one of the buttons now automatically selects its corresponding theme, because configuring an un-selected theme doesn't make a lot of sense and could lead to user confusion once this UI is more obvious and widely-used.
- Clicked on the configure buttons; each one selects its parent theme and opens its configuration dialog
Subscribers: richardbowen, zzag, kigwana, rkflx, matheusm, fabianr, abetts, Fuchs, graesslin, kwin
Differential Revision: https://phabricator.kde.org/D11201