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Re: sRGB color support in NS port

From: Jan Djärv
Subject: Re: sRGB color support in NS port
Date: Fri, 20 Dec 2013 19:55:17 +0100


20 dec 2013 kl. 19:13 skrev Eli Zaretskii <address@hidden>:

>> From: Steve Purcell <address@hidden>
>> Date: Fri, 20 Dec 2013 18:04:46 +0000
>> Cc: emacs-devel <address@hidden>
>> On 20 Dec 2013, at 17:41, Bozhidar Batsov <address@hidden> wrote:
>>> Some time ago Steve Purcell reported an issue with hex colour rendering on 
>>> OS X 
>>> (http://lists.gnu.org/archive/html/bug-gnu-emacs/2011-05/msg00077.html). 
>>> While nothing was changed in Emacs, many OS X users apply a patch similar 
>>> to this one https://gist.github.com/purcell/3858136 (an older version of 
>>> the patch is used by homebrew) to get the desired behaviour. I wonder if we 
>>> cannot finally include the aforementioned patch or conditionnaly allow the 
>>> use sRGB colour via a build option (like —with-srgb).
>> That would be great, and I’d be happy to do whatever is necessary to help 
>> this become a reality, e.g. contributor agreements etc.
> The patch is just 4 lines, so it doesn't need any legal paperwork.
>> My understanding is that everyone who cares about colour accuracy on OS X 
>> builds his Emacs with an sRGB patch of some sort.

Your understanding is not fact.

>> As for making this a build option, I don’t even think the non-sRGB colours 
>> should be an option on OS X, though I can’t speak for the whole NS platform.

It must be an option.  The patch uses colorWithSRGBRed, which isn't availiable 
on OSX < 10.7.
sRGBColorSpace isn't available on OSX 10.4, which Emacs still supports.
Are you proposing ditching earlier OSX versions than 10.7?

        Jan D.

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