netwm addition

[Michael Zuercher]

I have been looking into the bugs involved with electric borders in kwin. 
There are several bugs here, but one of the more obvious occurs w.r.t the 
pager in a vertical kicker. In this situation, kwin and the pager don't agree 
on the layout (ie, which desktops are above/beside each other), so when you 
touch an electric border it moves to a different desktop than the naive user 
would expect :-).

It seems to me that the best way to solve these problems is to add to the 
netwm spec a new property: NETSize desktopLayout() const.  This would return 
the vertical and horizontal layout of the desktops.  Window managers would be 
encouraged to choose a specific layout, and clients should use this instead 
of simply retrieving the number of desktops and inferring their layout 
relative to one another. Window managers should also set the number as 
before, so that older clients (or clients which do not care about layout) can 
continue unchanged.

Any thoughts on this matter?

Regards, 
Michael Zuercher