- From: Leonard Rosenthol <lrosenth@adobe.com>
- Date: Tue, 31 May 2011 07:28:22 -0700
- To: Henri Sivonen <hsivonen@iki.fi>
- CC: Karl Dubost <karld@opera.com>, "public-html@w3.org" <public-html@w3.org>
Because alternates are _NOT JUST_ about resolution - they can also be completely different images based on layout. For example, the image that I want to show in portrait may not be the same as the one that I show in landscape - so I would have both versions in the documents. Leonard -----Original Message----- From: Henri Sivonen [mailto:hsivonen@iki.fi] Sent: Tuesday, May 31, 2011 7:09 AM To: Leonard Rosenthol Cc: Karl Dubost; public-html@w3.org Subject: RE: Adaptive images On Tue, 2011-05-31 at 06:48 -0700, Leonard Rosenthol wrote: > Correct. And that's fine for web/server-hosted content. > > However, consider an EPUB3 file where there is no negotiation going on. So you'd (most likely) need something in the <img> tag that would list the alternatives and then have those connected (via id/name) to CSS queries so the UA would know which one to pick. If you've transferring the whole epub bundle to the end user anyway, why bother having multiple versions of images instead of having a high-res image and letting the client downsample? Are you optimizing client CPU and RAM use instead of the epub bundle size? -- Henri Sivonen hsivonen@iki.fi http://hsivonen.iki.fi/
Received on Tuesday, 31 May 2011 14:29:03 UTC