How to apply frost-Effect (blur and transparency) to parent?

[themts]

Hey guys,

is it possible to apply a frost effect to an items' parent?
I found this post which shows how it should look like:
https://forum.qt.io/topic/38297/a-semi-transparent-rectangle-that-also-blurs/7

Lets say I have a custom-component, e.g. a virtual keyboard. The keyboard has a background-rectangle which should be semi-transparent AND a fast-blur effect to its' parent, so I can place my component on top of something and blur the background.

I don't want to write the complete frost effect every time I place my component somewhere.

Any solution for it?

CU
mts