From: Juri Linkov <juri@jurta.org>
Cc: eliz@gnu.org, emacs-devel@gnu.org
Subject: Re: list-colors-display: display all color names
Date: Wed, 05 Jan 2005 07:38:28 +0200 [thread overview]
Message-ID: <874qhwzb8r.fsf@jurta.org> (raw)
In-Reply-To: <87vfackhi9.fsf-monnier+emacs@gnu.org> (Stefan Monnier's message of "Tue, 04 Jan 2005 16:57:05 -0500")
Stefan Monnier <monnier@iro.umontreal.ca> writes:
>>> Also, users might want to find the color name corresponding to
>>> the known RGB value.
>
>> Is there any reasonably practical way to do that for an arbitrary RGB
>> triplet?
>
> A guess a function that returns the closest color-name would be good enough.
> What that's good for, I don't know.
There is already such a function: `tty-color-approximate' (currently
it works only for tty colors). I don't know how it is useful from the
user's POV. What I intended with adding #RRGGBB values was to make it
easier for users getting somewhere a #RRGGBB value to see if there is
a corresponding easily rememberable color name.
With #RRGGBB values printed in the *Colors* buffer it would be possible
to find closer color names even without a function, simply with a regexp
isearch like M-C-s #f.[fe].e. It will not find the closest color name,
but it is good enough to help to find all closer colors.
Even better would be if the *Colors* buffer was sorted by RGB values.
I don't suggest to do that by default, but different sorting order would
be useful, e.g. by color name, by color intensity. The latter is good
for finding a darker or brighter color than a given color, but it is not
so obvious since there are too many variants of projecting a color value
from 3-D color space into a 1-D color list. Perhaps the most useful is
sorting by hue into a rainbow, and inside every hue sorting by value*saturation.
>>> gray grey bebebe
>>> light gray light grey, LightGray, LightGrey d3d3d3
>
>> First, if we do that, I'd suggest to use #BE12BE34BE56, i.e. prefix
>> with # and use 4 digits per color.
>
> I agree on the `#'.
I omitted the `#' to save more space. But OK, one character is not
too much to remind the users about the proper format.
--
Juri Linkov
http://www.jurta.org/emacs/
next prev parent reply other threads:[~2005-01-05 5:38 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-26 19:45 list-colors-display: display all color names Juri Linkov
2004-12-28 4:57 ` Richard Stallman
2005-01-04 9:07 ` Juri Linkov
2005-01-04 16:37 ` Drew Adams
2005-01-04 21:09 ` Eli Zaretskii
2005-01-04 21:57 ` Stefan Monnier
2005-01-05 5:38 ` Juri Linkov [this message]
2005-01-05 18:12 ` Drew Adams
2005-01-05 19:11 ` Eli Zaretskii
2005-01-05 19:21 ` Edward O'Connor
2005-01-06 4:35 ` Eli Zaretskii
2005-01-05 5:32 ` Juri Linkov
2005-01-05 18:12 ` Drew Adams
2005-01-05 19:13 ` Eli Zaretskii
2005-01-05 18:59 ` Eli Zaretskii
2005-01-05 19:46 ` Drew Adams
2005-01-06 4:50 ` Eli Zaretskii
2005-01-06 8:27 ` Juri Linkov
2005-01-06 9:05 ` Miles Bader
2005-01-06 10:44 ` Juri Linkov
2005-01-05 20:08 ` Richard Stallman
2005-01-05 3:30 ` Richard Stallman
2005-01-06 8:29 ` Juri Linkov
2004-12-29 14:46 ` Michael Mauger
2004-12-29 19:02 ` Juri Linkov
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