Filter refactoring (Was: are selections part of kispaintdevice or aren't they?)

[Cyrille Berger]

Btw, thinking about this. To limit the time spend on refactoring (yet again) 
the filter. We need to make all the remaining changes in one go. (it's really 
an ultra boring task, I know about what I am talking).

That means, the switch to the new progress report, that would allow us to 
remove the protected fields of KisFilter and have process be a const 
function, and probably be "thread-safe" (at least at the API level, then 
nothing prevent a nasty filter author to use const_cast).

So the list would be:
 - integrate 
 - all remaining fields of KisFilter moved to the d-pointer
 - constify KisFilter::process
 - the KisSelection change

Am I missing something ?

-- 
Cyrille Berger