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List:       kde-kimageshop
Subject:    Re: Colorspace inheritance, Lab, Basic ect
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2005-12-10 17:44:22
Message-ID: Pine.LNX.4.53.0512101842570.23859 () calcifer ! valdyas ! org
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On Sat, 10 Dec 2005, Casper Boemann wrote:

> Hi
>
> Following a discussion with Bart on IRC we have come up with some thoughts on
> how to design the colorspace inheritance.
>
> The superclass is of course KisColorSpace defining the interface and nothing
> else.

Right.

> Subclass to that we have KisLabColorSpace which uses lcms to implement
> everything from scratch.
>
> And Subclass to that we have KisBasicLcmsColorSpace which provide default
> implementations for every other ColorSpace that is represented in lcms.
>
> Now there are a couple of colorspaces that don't have lcms types to go along.
> They need to implement everything from scratch as well, but they could reuse
> KisLabColorSpace in some cases by first converting to Lab, then call labCS to
> do the work and then convert back.
>

Right, too.

> The u16 etc helper classes we should think about some more. Perhaps
> inheritance isn't the best way to leverage the power. Anyway they are fast
> loosing their contents these days.

The big thing there was the alpha channel.

Boudewijn
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