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Re: [css3-images] What does image-resolution apply to?

From: MURAKAMI Shinyu <murakami@antenna.co.jp>
Date: Wed, 25 May 2011 11:36:43 +0900
To: "Tab Atkins Jr." <jackalmage@gmail.com>
Cc: www-style list <www-style@w3.org>
Message-Id: <20110525113642.7E8C.C598BCD7@antenna.co.jp>
"Tab Atkins Jr." <jackalmage@gmail.com> wrote on 2011/05/24 8:19:56
> We have an issue in the Image Values spec about precisely what the
> image-resolution property applies to.  There are two possibilities:
> 1) image-resolution only applies to replaced elements, and only
> affects their content.
> 2) image-resolution applies to all elements, and affects all images
> used on them: content images, background images, etc.
> You can use the image() function to change the resolution of images
> used in CSS properties, so we don't actually lose any power if we go
> with #1.
> As far as I know, this property is currently only implemented by
> Prince and Antenna House's formatter.  I don't have either of these to
> test, and the docs for both are pretty bad, at least for this
> property, so I can't tell what they actually do.  I'd be fine with
> just speccing whatever behavior they have, if someone would tell me
> what it is.
> ~TJ

Antenna House Formatter has -ah-image-resolution and -ah-background-image-resolution 
properties based on a draft of CSS3 GCPM.
The -ah-background-image-resolution is for background images and 
the -ah-image-resolution is for the rest -- replaced elements, images 
specified by the 'content' property, list-style-image, etc.

We have not implemented the image() function yet, but if we can use 
the image() function to change the resolution of images used in CSS properties,
the image-resolution property can apply to all (including background) as
default resolution (authors can change using the image() function).
So the #2 option seems good for me.

Antenna House Formatter:
Received on Wednesday, 25 May 2011 02:37:39 UTC

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