Widget previewer

[Reza Shah]

Hi,

Currently i'm creating widget previewer, well hope not confusing you
guys with the name.
It's not plasmoid viewer,  but a plasmoid which i put all visible
widget from Plasma namespace.

The screenshot is here http://imagebin.ca/view/RfJLkMtP.html.

And questions follow:
1. Why the theme combobox items drawn below other widget?
2. How to paint each widget using certain desktop theme selected from
theme combobox?

Suggestions for further development welcome :)
I'm thinking about adding animation or another class from plasma namespace.

Regards,
Reza