Add Panel Widgets Dialog has several rendering issues

[nebulade]

There is a small "_" below the icon on selected delegates.

For some delegates the text is clipped on the bottom of a delegate

Probably related to the second issue, the bounding rect for delegates seems wrong. I was looking into the code briefly and maybe the size hint calculation is different from the actual rendering?

[jleclanche]

Is this on qt5 only or does it happen on qt4 too? Ive never seen this. Although by resizing the window you can see the clipping (I filed an issue about it way back on razor-qt, it was a qt issue and not fixable really)

[nebulade]

I use Qt5, no Qt4 build on hand. In this case I use the breeze settings for QtCurve style engine.

After playing with that code path a bit, it seems it is 'simply' an issue of disconnect between the size hint and the actual painted area, although I couldn't come up with something that actually is in sync...

[jleclanche]

Let's merge this into lxqt/lxqt#347