Plasma 5.12.2 or later !!
Breeze Custom Lock is a partial KDE Look and Feel theme. It only has the lock screen part.
The Breeze Custom Lock has:
Semitransparent sliding rectangle. The lock screen texts are on the rectangle and moving out the sight when not needed.
The rectangle is moving:
- up when up arrow is pressed
- down when the down arrow is pressed.
- mouse movement will also trigger the down movement.
- after configurable time the rectangle is sliding out of sight.
There are option to configure the clock place, font size and date/time format.
- The "Show media controls" configure option is broken in the Kubuntu 18.04. More: https://www.kubuntuforums.net/showthread.php/67703-Kubuntu-video-wallpaper?p=415458#post415458