On 6/30/13 2:53 AM, Jet Villegas wrote:
I'd love to see us make some bold moves here for application development use
cases (think asm.js for CSS.) Can we define a strict subset of CSS syntax with
clear semantics for parallel processing, raster caches, hardware acceleration,
and general app responsiveness?
Well, not sure about for *apps*, but there is certainly opportunity for
improvement if you limit CSS. Specifically, there's the subset of CSS
used in epub, which disallows absolute or fixed positioning and I think
other things like negative margins. This allows you to guarantee that
layout always flows forward and you can easily paginate the document and
at least in theory allows for a bunch of layout optimizations. It also
specifically allows you to lay out documents starting "anywhere" (as an
ebook reader does) without building the entire DOM.
It would be nice if the web could have efficient paginated documents
without all the horrible positioning added to support "apps".
--BDS
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