- From: Robert O'Callahan <robert@ocallahan.org>
- Date: Tue, 24 Jun 2014 15:25:40 +1200
- To: "Tab Atkins Jr." <jackalmage@gmail.com>
- Cc: www-svg <www-svg@w3.org>, WHATWG List <whatwg@whatwg.org>
- Message-ID: <CAOp6jLYqJR5n6+AknC9USuudV669ue=ukZm6YE0yHNPBkoGu-Q@mail.gmail.com>
On Thu, Jun 19, 2014 at 4:33 AM, Tab Atkins Jr. <jackalmage@gmail.com> wrote: > Yes, increasing the set of name-alikes between html and svg is absolutely > not something we'll support. (I've unfortunately been out of the loop with > the svgwg for a while, or else I would have prevented this from showing up > in the first place.) > > Allowing html directly in svg is definitely the right answer. Parsing > shouldn't be too hard, and defining the layout model would be pretty > trivial. > I think we should actually figure this out. I'm not an expert on the HTML parser, but it seems to me there's already some support for what we need. E.g. given <!DOCTYPE HTML> <svg> <span id="s"></span> <div id="i"></div> the elements "s" and "i" are put in the HTML namespace already. For layout, we could do this: 1) When an HTML element is a child of an SVG element, perform CSS layout of the HTML element treating the nearest SVG viewport as the containing block. Its user-space width and height become the width and height of the containing block in CSS pixels. 2) Treat such HTML elements as "position:relative". 3) Add "x" and "y" attributes to HTMLElement and have them map to "left" and "top" CSS properties. (There's a crazy legacy compat issue for HTMLImageElement.x/y but we can hack around that.) 4) Add a "transform" attribute to HTMLElement and have it map to the "transform" CSS property. #3 and #4 are optional, there are pros and cons to having them. Using the nearest SVG viewport in #1 is because other SVG container elements don't have a defined size (and we can't use getBBox because that depends on the layout of the children). Rob -- Jtehsauts tshaei dS,o n" Wohfy Mdaon yhoaus eanuttehrotraiitny eovni le atrhtohu gthot sf oirng iyvoeu rs ihnesa.r"t sS?o Whhei csha iids teoa stiheer :p atroa lsyazye,d 'mYaonu,r "sGients uapr,e tfaokreg iyvoeunr, 'm aotr atnod sgaoy ,h o'mGee.t" uTph eann dt hwea lmka'n? gBoutt uIp waanndt wyeonut thoo mken.o w
Received on Tuesday, 24 June 2014 03:26:09 UTC