Ian Hickson wrote:
This is a proposal to add "height" and "width" attributes to <link>
specifically for the case of rel=icon, so that authors can provide
multiple icons and let the UA decide which to use based on their size
(without having to download them all to find out which is best).
Opinions?
Given that <link/> is more intended as a generic element, I'm somewhat leery of
adding attributes specifically for one individual use of it. If you're going to add an
attribute (but see below), I think it makes sense that it be something that any use of
<link/> could use to store extra data -- so an opaque attribute whose semantics are
specified by the rel attribute of the link.
Maciej Stachowiak wrote:
I would suggest a sizes attribute which can take a list of sizes (with x as a width/height
separator), or a keyword such as "any" or "scalable" to indicate a scalable
format suitable for any size.
<link type="icon" type="application/svg" sizes="any" href="whatwg.svg">
<link type="icon" type="image/microsoft.vnd.icon" sizes="16x16 32x32"
href="whatwg.ico">
<link type="icon" type="image/x-apple-icons" sizes="16x16 32x32 64x64 128x128 256x256
512x512" href="whatwg.icns">
<link type="icon" type="image/png" sizes="59x60" href="whatwg.png">
This might require that existing browsers cope correctly (or exploit
duplication/error behaviors), but could a MIME parameter address this without
needing another attribute at all? That's the most narrowly scoped change I can
imagine that would address the need.
<link rel="icon" type="application/svg; sizes=any" href="whatwg.svg">
<link rel="icon" type='image/microsoft.vnd.icon; sizes="16x16,32x32"'
href="whatwg.ico">
<link rel="icon" type='image/x-apple-icons;
sizes="16x16,32x32,64x64,128x128,256x256,512x512"' href="whatwg.icns">
<link rel="icon" type="image/png; sizes=59x60" href="whatwg.png">
Restrictions on what a parameter value may be (basically can't contain any
separators or whitespace) are a touch confounding here because you don't have
any separators unless you quote; that probably factors into the equation here.
Jeff
--
Life would be so much easier if humans had a natural affinity for remembering
128-bit integers.
