On Tue, Aug 4, 2015 at 10:06 AM, Bobby Holley <bobbyhol...@gmail.com> wrote: > How about a scheme in which there can be N such <meta> elements, and the > painting only happens when all of them are gone (or some timeout occurs)? > That solve the common case that Jonas is talking about, and allows > libraries to insert their own paint blocker into <head> if they really want > to block painting? The a nice side-bonus of this scheme is that the > existence of blockers is clearly visible in the DOM, so that a buggy > library that leaves a paint blocker active is more noticeable.
If the meta tag, or whatever the toggle becomes, is set, then I expect if the page's JS asks for a DOM element's box properties, it will get values like 0 for sizes, since I believe the goal is to avoid the browser doing extra work until the page's JS got everything set up. If that is the case, should there be a promise API for knowing when the first layout and rendering has occurred so that the page's JS can then ask for element box properties to get accurate values? James _______________________________________________ dev-platform mailing list dev-platform@lists.mozilla.org https://lists.mozilla.org/listinfo/dev-platform
