Contact emails
alexis.men...@intel.com
Explainer
https://github.com/w3c/device-posture
https://www.w3.org/TR/device-posture/#introduction
Specification
https://www.w3.org/TR/device-posture
Summary
This API helps developers to detect the current posture of a foldable
device. The device posture is the physical position in which a device
holds which may be derived from sensors in addition to the angle. From
enhancing the usability of a website by avoiding the area of a fold, to
enabling innovative use cases for the web, knowing the posture of a
device can help developers tailor their content to different devices.
Content can be consumed and browsed even when the device is not flat, in
which case the developer might want to provide a different layout for it
depending on the posture state in which the device is being used.
Blink component
Blink>FoldableAPIs
<https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3EFoldableAPIs>
TAG review
https://github.com/w3ctag/design-reviews/issues/575
TAG review status
Issues addressed
Risks
Interoperability and Compatibility
None
/Gecko/: No signal
(https://github.com/mozilla/standards-positions/issues/882)
/WebKit/: No signal
(https://github.com/WebKit/standards-positions/issues/328)
/Web developers/:
https://github.com/w3c/device-posture/issues/111#issuecomment-2363251667
/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?
Feature is disabled on WebView for now. See
https://issues.chromium.org/issues/335314107 for more details.
Debuggability
Besides the usual DevTools debugging of the CSS and JavaScript API, a
specific device has 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
The API will work on all the platforms but only Android and Windows will
return posture information (other platforms do not have this category of
devices)
Is this feature fully tested byweb-platform-tests
<https://chromium.googlesource.com/chromium/src/+/main/docs/testing/web_platform_tests.md>?
Yes
The tests aren't complete yet because we need integration with WebDriver
to emulate posture changes. It's being worked on.
https://github.com/web-platform-tests/wpt/tree/master/device-posture
Flag name on chrome://flags
device-posture
Finch feature name
kDevicePosture
Requires code in //chrome?
False
Tracking bug
https://bugs.chromium.org/p/chromium/issues/detail?id=1066842
Sample links
https://github.com/foldable-devices
Estimated milestones
Shipping on desktop 131
Origin trial desktop first 125
Origin trial desktop last 128
DevTrial on desktop 95
Shipping on Android 131
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/5185813744975872?gate=6219681092599808
Links to previous Intent discussions
Intent to
Prototype:https://groups.google.com/a/chromium.org/g/blink-dev/c/prHGPxF62i4
Intent to
Experiment:https://groups.google.com/a/chromium.org/d/msgid/blink-dev/8c244153-79c4-483e-8449-4aca14b35636%40chromium.org
This intent message was generated byChrome Platform Status
<https://chromestatus.com/>.
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