Re: Fwd: [whatwg] Built-in image sprite support in HTML5

Hi Silvia,

> FYI: there is a discussion about image sprites happening on the WHATWG
> mailing list and I've just had the following feedback on using #xywh
> for highlighting an image region rather than focusing in on it.
> We might want to change it or better explain our reasons for display choices.

Thanks for passing this on. The current WD says very little about the 
display of a spatial Media Fragment. I quote:

"For a spatial URI fragment, it is recommended to emphasize the spatial 
region during playback. For instance, the spatial region could be 
indicated by means of a bounding box or the background (i.e., all the 
pixels that are not contained within the region) could be blurred or 

Therefore, the highlighting is *just* an example. We can decide to stay 
very fuzzy on this or on the contrary recommend some display. My 
personal preference would be to make this bounding box accessible for a 
CSS that could decide what kind of visual effect it wants to apply on 
this region. We can discuss this during tomorrow's telecon.
Best regards.


RaphaŽl Troncy
EURECOM, Multimedia Communications Department
2229, route des CrÍtes, 06560 Sophia Antipolis, France.
e-mail: &
Tel: +33 (0)4 - 9300 8242
Fax: +33 (0)4 - 9000 8200

Received on Tuesday, 25 May 2010 12:06:51 UTC