Do I understand correctly that currently lazy-loaded images in CSS scrollers have suboptimal behavior and this would improve that without potentially harming other cases?
On Wed, Nov 22, 2023 at 1:55 AM Traian Captan <tcap...@chromium.org> wrote: > Contact emailstcap...@chromium.org > > ExplainerNone > > Specificationhttps://html.spec.whatwg.org/#lazy-load-root-margin > > Summary > > Changes the lazy load intersection observer's init dictionary to use a > scrollMargin instead of a rootMargin. This allows lazy loading images > contained inside CSS scrollers, like carousels, to load as expected when > near the viewport instead of the current behavior where these images load > when at least one pixel is intersecting the viewport. > > > Blink componentBlink>Image > <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EImage> > > Search tagslazyload <https://chromestatus.com/features#tags:lazyload>, > scrollmargin <https://chromestatus.com/features#tags:scrollmargin> > > TAG reviewNone > > TAG review statusNot applicable > > Risks > > > Interoperability and Compatibility > > Overall low as scroll margin also applies to the root element thus not > affecting lazy loading images that are currently loading with just a root > margin. > > > *Gecko*: Positive (https://github.com/w3c/IntersectionObserver/issues/431 > ) https://bugzilla.mozilla.org/show_bug.cgi?id=1864794 > > *WebKit*: Positive ( > https://github.com/w3c/IntersectionObserver/issues/431#issuecomment-930602435 > ) https://bugs.webkit.org/show_bug.cgi?id=264864 > > *Web developers*: Positive ( > https://bugs.chromium.org/p/chromium/issues/detail?id=1391989) > > *Other signals*: > > WebView application risks > > Does this intent deprecate or change behavior of existing APIs, such that > it has potentially high risk for Android WebView-based applications? > > None > > > Debuggability > > None > > > Will this feature be supported on all six Blink platforms (Windows, Mac, > Linux, Chrome OS, Android, and Android WebView)?Yes > > Is this feature fully tested by web-platform-tests > <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> > ?Yes > > > https://wpt.fyi/results/html/semantics/embedded-content/the-img-element?label=master&label=experimental&aligned&q=image-loading-lazy-in- > > > Flag name on chrome://flagsLazyLoadScrollMargin > > Finch feature nameNone > > Non-finch justification > > This feature is behind an enabled-by-default flag that can be disabled if > needed. > > > Requires code in //chrome?False > > Tracking bughttps://bugs.chromium.org/p/chromium/issues/detail?id=1391989 > > Estimated milestones > Shipping on desktop 121 > DevTrial on desktop 121 > Shipping on Android 121 > DevTrial on Android 121 > Shipping on WebView 121 > > Anticipated spec changes > > Open questions about a feature may be a source of future web compat or > interop issues. Please list open issues (e.g. links to known github issues > in the project for the feature specification) whose resolution may > introduce web compat/interop risk (e.g., changing to naming or structure of > the API in a non-backward-compatible way). > None > > Link to entry on the Chrome Platform Status > https://chromestatus.com/feature/5106926245642240 > > Links to previous Intent discussionsIntent to prototype: > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvtrmHkoOpTuD2eZYVOyFuAhP8ZFVoTuNBS8zYTVY%3DTaaQ%40mail.gmail.com > > This intent message was generated by Chrome Platform Status > <https://chromestatus.com/>. > > -- > You received this message because you are subscribed to the Google Groups > "blink-dev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to blink-dev+unsubscr...@chromium.org. > To view this discussion on the web visit > https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvsUb0GEG9WNWRN7Akkowjm03gLj%2Biiq5rG8%2BzdAWMBTNA%40mail.gmail.com > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAFxahvsUb0GEG9WNWRN7Akkowjm03gLj%2Biiq5rG8%2BzdAWMBTNA%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. To unsubscribe from this group and stop receiving emails from it, send an email to blink-dev+unsubscr...@chromium.org. To view this discussion on the web visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAL5BFfUgBoRPaP9FxPceugOq7i4%3D8EYYy5GtrvRicsy3Ntzhhw%40mail.gmail.com.
