[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1)
From: |
Eli Zaretskii |
Subject: |
Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1) |
Date: |
Wed, 21 Mar 2018 15:32:17 +0200 |
> From: Richard Copley <address@hidden>
> Date: Wed, 21 Mar 2018 13:22:37 +0000
> Cc: John Wiegley <address@hidden>, Tom Tromey <address@hidden>,
> Emacs Development <address@hidden>
>
> We do something very similar in frame-set-background-mode and in
> tty-color-approximate.
>
> I don't see it. You're talking about this?
>
> ((>= (apply '+ (color-values bg-color frame))
> ;; Just looking at the screen, colors whose
> ;; values add up to .6 of the white total
> ;; still look dark to me.
> (* (apply '+ (color-values "white" frame)) .6))
That's the first example, yes.
> It's this particular way of using color-distance that we appear to
> have invented.
Not according to the article from which the implementation of
color-distance was taken.
> If we didn't then we took it from
> somewhere else, and someone (Tom?) should know where.
The comments in the sources of color-distance tell where we took it
from.
> I don't believe the concept of a sphere centred on black is a useful one in
> this context, or that allowing the
> user to vary its radius makes it any better.
I suggest to read the original article mentioned above.
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/20
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Eli Zaretskii, 2018/03/20
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/20
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Eli Zaretskii, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Eli Zaretskii, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1),
Eli Zaretskii <=
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Eli Zaretskii, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Richard Copley, 2018/03/21
- Re: CSS contrast (#30295) (was Re: Heads-up: Emacs 26.1 RC1), Eli Zaretskii, 2018/03/21