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From: "Stephen J. Turnbull" <stephen@xemacs.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: aaditya sood <aaditya@sood.net.in>, emacs-devel@gnu.org
Subject: Re: alpha support for colors
Date: Wed, 31 Oct 2012 11:06:11 +0900	[thread overview]
Message-ID: <87lienjsz0.fsf@uwakimon.sk.tsukuba.ac.jp> (raw)
In-Reply-To: <83objj7t21.fsf@gnu.org>

Eli Zaretskii writes:

 > What do you mean by "composition of all the faces"?  Why "all"?

I suspect aaditya is thinking in terms of bitmap composition
operations on graphics layers, not Emacs faces.

So he'd like to put an overlay on some text, give that overlay a 'face
property of '(+ red), and turn all the blue text in the overlay to
violet (the RGB sum of #F00 and #00F == #F0F).



  reply	other threads:[~2012-10-31  2:06 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-29 20:19 alpha support for colors aaditya sood
2012-10-30  1:52 ` Chong Yidong
2012-10-30  5:02   ` aaditya sood
2012-10-30  5:07     ` Masatake YAMATO
2012-10-30  6:51     ` joakim
2012-10-30  7:37       ` aaditya sood
2012-10-30 13:28         ` Stefan Monnier
2012-10-30 17:45         ` Eli Zaretskii
2012-10-31  2:06           ` Stephen J. Turnbull [this message]
2012-10-31  4:00             ` Eli Zaretskii
2012-10-30 17:43     ` Eli Zaretskii

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