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Re: [css3-color] #rrggbbaa annotation

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Tue, 18 May 2010 10:47:30 -0700
Message-ID: <AANLkTimhaqcpFUzUCJvd32lSSoa__OkpEhgwStQZ3OmK@mail.gmail.com>
To: Simon Fraser <smfr@me.com>
Cc: Patrick Garies <pgaries@fastmail.us>, Brad Kemper <brad.kemper@gmail.com>, Alberto Lepe <dev@alepe.com>, www-style list <www-style@w3.org>
On Fri, May 14, 2010 at 9:07 PM, Tab Atkins Jr. <jackalmage@gmail.com> wrote:
> I submitted my very first patch to Webkit today, to add this syntax:
> https://bugs.webkit.org/show_bug.cgi?id=39140 .
> I'm still ambivalent about adding this to Level 3, but given the
> triviality of the patch, and the presumed triviality of similar
> changes to the other browsers, I highly doubt it would slow down the
> progression of Level 3.  Lachy has expressed a desire to get Opera to
> support it, and Sylvain has said that he'll at least support a
> proposal.
> The spec change is similarly trivial.  Replace the second paragraph
> under "RGBA Color Values", which starts with "Unlike RGB values...",
> with "The format of an RGBA value in hexadecimal notation is a ‘#’
> immediately followed by either four or eight hexadecimal characters.
> The four-digit RGB notation (#rgba) is converted into eight-digit form
> (#rrggbbaa) by replicating digits, not by adding zeros.  The last two
> digits are divided by 256 to form an <alphavalue>."  Then add the
> obvious examples to the two example sections.
> (I actually need to go check and see what exactly we do with the
> mapping.  0x80 maps to .5, but 0xFF maps to 1.0.  Something seems
> slightly amiss here...)

So, my patch is currently denied based on 4/8 hexit colors not being
in any draft.  Can we just go ahead and start Colors level 4?  We can
put in #rgba notation, along with color-correction and the color-space
stuff we removed during TPAC.  They need somewhere to live anyway.

Received on Tuesday, 18 May 2010 17:48:22 UTC

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