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List:       kde-kimageshop
Subject:    Re: Filters "dialog" in 2.0
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2007-06-20 19:08:42
Message-ID: 200706202108.42769.boud () valdyas ! org
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On Wednesday 20 June 2007, Cyrille Berger wrote:
> On Wednesday 20 June 2007, Schleimer, Ben wrote:
> > Hi,
> >   I think the modeless is a decent idea, you need to consider the
> > performance of always running the filter on the full image. It might be
> > worth considering allowing the user to select a portion of the image to
> > preview the filter just so it's quick to change filter parameters and see
> > the update.
>
> and I was also thinking that the view of the image should get updated as
> the filter is proceed on the image. That way the user could see how the
> image is affected before the whole processing is finished. That could be
> usefull for effect masks and adjustement layers.

In theory that should work already: the projection code recomposites in chunks 
and sends every chunk to the canvas. However, in practice, Qt queues the 
updates and updates in one go. In fact, I've only seen Krita update the 
individual chunks once, when running under Valgrind :-).

-- 
Boudewijn Rempt 
http://www.valdyas.org/fading/index.cgi

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