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Explainer None Specification https://drafts.csswg.org/css-backgrounds-4/#background-position-longhands Summary Defines the background image's position relative to one of its edges. This syntax gives web authors a more flexible and responsive mechanisms to define the background image position, instead of using fixed values that need to be adapted to the window's or frame's size. Blink component Blink>CSS Web Feature ID background-position Motivation One important motivation is interoperability, given that Chrome is the only browser that lacks this syntax for the background-position-x/y longhands. Additionally, the background-position shorthand, which sets both the x/y positions, already supports the side-relative syntax, so the lack of the same syntax in the longhands may confuse web developers. There is no specific explainer, but this MDN page should be enough to understand the feature: https://developer.mozilla.org/en-US/docs/Web/CSS/background-position-x Initial public proposal None TAG review None TAG review status Not applicable Risks Interoperability and Compatibility This feature doesn't imply any interoperability risk, but the contrary, since Chrome needs to catch up in order to provide the same functionality than Firefox and Safari. There is no back-compatibility risk, because the old syntax is still valid if this feature is implemented. Gecko: Shipped/Shipping WebKit: Shipped/Shipping Web developers: Positive (https://issues.chromium.org/issues/40468636) The issue has 15 votes by now. 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 The feature can be tested and debugged using the regular Chrome DevTools support (eg, css style inspection) Is this feature fully tested by web-platform-tests? Yeshttps://wpt.fyi/results/css/css-backgrounds/parsing?label=master&label=experimental&aligned&q=background-position-x https://wpt.fyi/results/css/css-backgrounds/parsing?label=master&label=experimental&aligned&q=background-position-y Flag name on about://flags None Finch feature name None Non-finch justification None Requires code in //chrome? False Tracking bug https://issues.chromium.org/issues/40468636 Estimated milestones No milestones specified Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5073321259565056?gate=5093327095595008 This intent message was generated by Chrome Platform Status. -- 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 [email protected]. To view this discussion visit https://groups.google.com/a/chromium.org/d/msgid/blink-dev/68d10a08.710a0220.5367c.009d.GAE%40google.com.
