In T10889#184037, @kossebau wrote:

What do you mean exactly by "RECTANGULATED" and "ORTHOGONAL"? Can you give some examples?

So, if your aunt or uncle asks you what the difference between a dock and a panel is, the answer is?

@kossebau just to add some info, about your comment:

In D21013#460765, @kossebau wrote:

Eek, sorry for breaking things. Will have some thoughts about it.
Though, hm, item->window()->mask().isNull() is really a random heuristic asking to break sooner or later, given we have seen all kind of panel/dock styles by the time :) Well, actually it was already broken before given that the Oxygen Theme is non-simple-rect and the missing proper mask was a bug.
This really needs a proper solution with well defined concepts.

In D21013#460745, @kossebau wrote:

In D21013#460743, @mvourlakos wrote:

@kossebau one information please, with this set of paches the svg mask is also applied and in COMPOSITING state for the panels?

Yes. As in: at least most of the time as there are still some propagation bugs in the property chain to be uncovered and fixed. At least things work properly here after a clean plasma start with a clean cache.

For compositing my reference here is the Oxygen Plasma Theme with the rounded panel corners.
One can also try my special background test theme, which points issues out clearly: https://share.kde.org/s/6zJZg8RiEReFbfA

@kossebau one information please, with this set of paches the svg mask is also applied and in COMPOSITING state for the panels?