Thanks! Would it be possible to update the explainer to point to all the different moving parts of this, and ping the TAG and the vendor position requests, as they all seem rather old. The TAG specifically didn't really review this 5 years ago, and delegated to the CSSWG. It's worthwhile to ask them if they are happy with this as it turned out.
On Tuesday, April 29, 2025 at 10:11:00 PM UTC+2 alexis...@intel.com wrote: Contact emails alexis.men...@intel.com <zocha...@microsoft.com> Explainer https://github.com/WICG/visual-viewport/blob/gh-pages/ segments-explainer/SEGMENTS-EXPLAINER.md Specification https://www.w3.org/TR/mediaqueries-5/#mf-horizontal- viewport-segments https://drafts.csswg.org/css-viewport-1/#segments *https://drafts.csswg.org/css-env-1/#viewport-segments <https://drafts.csswg.org/css-env-1/#viewport-segments>* Design docs https://github.com/WICG/visual-viewport/blob/gh-pages/ segments-explainer/SEGMENTS-EXPLAINER.md Summary The Viewport Segments APIs allows developers to adapt their website/webapp layout to target foldable devices. The viewport segments defines the position and dimensions of a logically separate region of the viewport. Viewport segments are created when the viewport is split by one or more hardware features (such as a fold or a hinge between separate displays) that act as a divider; segments are the regions of the viewport that can be treated as logically distinct by the author. This is the sister of the Device Posture API (which is already stable) and both APIs are expected to be used to fully target foldable devices. Developers can access the information using JavaScript or CSS. Blink component Blink>FoldableAPIs <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3EFoldableAPIs%22> Search tags segment <https://chromestatus.com/features#tags:segment>, foldable <https://chromestatus.com/features#tags:foldable>, enumeration <https://chromestatus.com/features#tags:enumeration>, windows <https://chromestatus.com/features#tags:windows> TAG review https://github.com/w3ctag/design-reviews/issues/492 TAG review status Issues addressed Risks Interoperability and Compatibility This is a new API, risk is that it fails to get adoption. *Gecko*: No signal (https://github.com/mozilla/ standards-positions/issues/883) *WebKit*: No signal (https://github.com/WebKit/ standards-positions/issues/327) *Web developers*: Positive (https://twitter.com/DanB/ status/1179937850286059520) Another example: https://twitter.com/ justinxinliu/status/1240424897337155584 Note: Capturing cumulative Web / Framework developer views are challenging, as we don't have a really good way to aggregate and summarize this information in one URL. This is something we're thinking about and would love to improve in the future. *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 Besides the usual DevTools debugging of the CSS and JavaScript API, few specific devices have been added into the Device Emulation mode. Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)? Yes Windows and Android are for now the platforms where the viewport segment make the most sense (there is no available devices on the other OSes). Is this feature fully tested by web-platform-tests <https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md> ? Yes over here : https://github.com/web-platform-tests/wpt/tree/ master/viewport-segments There are hooks in WebDriver to allow emulating various type of folds (size, orientation, position). Flag name on about://flags viewport-segments Finch feature name ViewportSegments Rollout plan Will ship enabled for all users Requires code in //chrome? False Tracking bug https://crbug.com/1039050 Sample links https://github.com/foldable-devices/demos Estimated milestones Shipping on desktop 138 Origin trial desktop first 125 Origin trial desktop last 128 DevTrial on desktop 116 Shipping on Android 138 Origin trial Android first 125 Origin trial Android last 128 DevTrial on Android 123 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/5170498990243840?gate=5498556647997440 Links to previous Intent discussions Intent to Prototype: https://groups. google.com/a/chromium.org/g/blink-dev/c/_1_ljYsaqrU/m/qOoHJ7MhAgAJ 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 visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/b61f6e12-308c-4cc8-a57f-319907450979n%40chromium.org.
