[html4all] Discussion: "Accept requirement for immediate mode graphics a la canvas element"
chaals at opera.com
Wed Nov 21 07:34:24 PST 2007
On Wed, 21 Nov 2007 16:22:52 +0100, Philip TAYLOR
<Philip-and-LeKhanh at royal-tunbridge-wells.org> wrote:
> Charles McCathieNevile wrote:
>>> The latter
>>> will, by necessity, almost certainly be a /poor/
>> Only if written by people who don't understand what they are doing (i.e.
>> the majority of content producers). Bit by bit people get better though
>> a lot of people have some idea how to use alt now, which is an
>> improvement on 10 years ago.
> Doesn't this pre-suppose that all manipulation
> of a graphical 2-space can be adequately described
> in words ? With the best will in the world,
> I can imagine complex animations that would
> defeat most of us to describe ...
Not at all. As with Flash, I would suggest that ARIA-enhanced SVG is in
many cases a far more useful fallback, with plain text being a last resort
that should only reached through several other failures.
>>> However, the real question is "Does <canvas> allow
>>> for fallback content at all?", and the draft spec.
>>> totally fails to clarify this.
>> As far as I can see it does so. Otherwise I would be raising hell - as
>> an implementor of canvas, we need this. In any case, it should never be
>> allowed forward without doing so.
> Would you talk me through your reading of the draft
> spec. in support of that ? I would like to belive
> that it is true, but failed to find evidence in
> the draft spec. as currently written.
I haven't looked for a while, but last I did you could just put content
tags if you want.
(This actually has issues for current IE, which is a seperate problem :( )
I am not blessed with enough network to look at the spec right now, but I
will follow this up.
Charles McCathieNevile Opera Software, Standards Group
je parle français -- hablo español -- jeg lærer norsk
http://my.opera.com/chaals Try the Kestrel - Opera 9.5 alpha
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