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RE: Are transparent backgrounds a bad idea

From: Richard Ishida <ishida@w3.org>
Date: Wed, 16 Jun 2004 14:04:47 +0100
To: "'Tom Croucher'" <tom.croucher@sunderland.ac.uk>, <w3c-wai-gl@w3.org>
Message-Id: <20040616130446.517634EEEC@homer.w3.org>

Hi Tom,

Imagine that you want your graphic to appear round in shape.  Then imagine
that you want to allow the graphic to move across a background image applied
to the page itself as the window is flexed.  Or imagine that you provide
alternate stylesheets with different coloured backgrounds.  The way you'd
normally do this is to make the 'corners' of your graphic invisible.  That's
what I'm talking about.

(Yes, for you experts out there, I know I need to think carefully about
anti-aliasing if this is going to work ;)

Hope that helps,

Richard Ishida

contact info:

W3C Internationalization:

> -----Original Message-----
> From: w3c-wai-gl-request@w3.org 
> [mailto:w3c-wai-gl-request@w3.org] On Behalf Of Tom Croucher
> Sent: 16 June 2004 13:45
> To: w3c-wai-gl@w3.org
> Subject: Re: Are transparent backgrounds a bad idea
> Hi Richard,
> I can't quite follow the logic of using a transparent 
> background, if it truly is a background then the need for 
> transparency wouldn't be necessary.
> If some complex layered affect is going to be achieved then 
> that is probably more of an issue than the transparency.
> My feeling is that avoiding  transparency is preferable, 
> although if the user is using a custom style sheet it will 
> likely disable whatever background you were using anyway.
> Regards, 
> --
> Tom Croucher
> Human Computer Systems Group, University of Sunderland / 
> Codeworks NITRO http://www.codeworksnitro.net
Received on Wednesday, 16 June 2004 09:04:47 UTC

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