Contact emailsyo...@google.com ExplainerNone
Specificationhttps://github.com/w3c/csswg-drafts/pull/9699 Design docs https://docs.google.com/document/d/1AcnDShjT-kEuRaMchZPm5uaIgNZ4OiYtM4JI9qiV8Po/edit Summary Aligns the existing implementation of the previously non-standard CSS zoom property to align with the new standard. This changes various JS APIs to align with the spec (see design doc), change zoom to apply to iframes, and change it to apply to all inherit all length properties (currently it only changes inherited font-size) Blink componentBlink>Paint <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EPaint> TAG reviewNone TAG review statusPending Risks Interoperability and Compatibility There is web compatibility risk for these changes. However, previous research indicates broken content due to unexpected changes of the JS APIs is very unlikely, since: * The changes to the JS API simply change the coordinate space of the responses, not the syntax or what APIs are available. * Most pages found during the research didn't appear to use CSS zoom at all and the ones that did only relied on the visual effect, not JS APIs. It's possible some pages will be broken by the changes to inherited properties other than font-size, or applying zoom to sub-frames, but based on previous research, those are very likely to be minor visual changes that don't break fundamental user interaction with the site. None of the sites reviewed contained iframes underneath a zoomed ancestor. We will use direct outreach to avoid any broken features in Office 365 or the Gmail native mobile app *Gecko*: No signal Filed a standard position request: https://github.com/mozilla/standards-positions/issues/977 *WebKit*: No signal Filed a standard position request: https://github.com/WebKit/standards-positions/issues/311 *Web developers*: Positive ( https://docs.google.com/document/d/1cmbXpjAcXAht2ufi7bNKy-rbVNveqaf0UzeYg_DIMNA/edit#heading=h.6sz4u73bikbd) Research collected as part of the previous attempt to remove CSS zoom demonstrated several use cases. *Other signals*: WebView application risks See Interoperability and Compatibility above Debuggability None Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?No Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ?Yes All JS APIs affected by zoom are tested with the following wpt tests: https://wpt.fyi/results/css/cssom-view/offsetTop-offsetLeft-with-zoom.html?label=master&label=experimental&aligned&q=cssom-view%2FoffsetTop-offsetLeft-with-zoom.html https://wpt.fyi/results/css/cssom-view/client-props-zoom.html?label=master&label=experimental&aligned https://wpt.fyi/results/css/cssom-view/getBoundingClientRect-zoom.html?label=master&label=experimental&aligned https://wpt.fyi/results/css/cssom-view/getClientRects-zoom.html?label=master&label=experimental&aligned https://wpt.fyi/results/css/cssom-view/scroll-zoom.html?label=master&label=experimental&aligned https://wpt.fyi/results/intersection-observer/zoom-scaled-target.html?label=experimental&label=master&aligned Flag name on chrome://flagsStandardizedBrowserZoom Finch feature nameStandardizedBrowserZoom Requires code in //chrome?False Sample linkshttps://jsbin.com/wasafateko/edit?html,css,js,output Estimated milestones No milestones specified Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5198254868529152 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/CAAOtuiYKjC9Gt%2BgXwWNT_hJneBMa053RizCX5Xj5p_07CVLXkA%40mail.gmail.com.
