Contact emailsfuth...@chromium.org, andr...@chromium.org ExplainerNone
Specification https://drafts.css-houdini.org/css-properties-values-api-1/#syntax-strings Summary Supports using the <transform-function> and <transform-list> syntaxes for custom properties registered with @property or registerProperty(). The syntax can be used to restrict values of the custom property to represent transforms. This also makes it possible to use transitions and animations directly on these registered custom properties. <transform-list> and <transform-function> can have computed values that contain both pixel and percentage values. They are interpolated as pixels and percentages respectively. However, if transforms cannot be interpolated on a function by function basis because the function types do not match, they need to be interpolated by matrices which cannot represent percentage values. For instance when interpolating between a translate and a rotate with a percentage component in the translate function. For those cases a mix() function is necessary to represent intermediate values. Chrome does not yet implement a mix() function. Instead we fall back to discrete interpolations to avoid non-representable computed values. This is only a problem for the standard 'transform' property in the typed om interfaces since getComputedStyle() returns the resolved value for the 'transform' property. Blink componentBlink>CSS <https://bugs.chromium.org/p/chromium/issues/list?q=component:Blink%3ECSS> TAG reviewNone TAG review statusNot applicable Risks Interoperability and Compatibility None *Gecko*: Positive Implementation behind a flag. *WebKit*: Shipped/Shipping *Web developers*: No signals *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 No additional devtools support necessary compared to existing syntaxes. 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/css/css-properties-values-api/animation/custom-property-animation-list-type-mismatch.html https://wpt.fyi/css/css-properties-values-api/animation/custom-property-animation-transform-function.html https://wpt.fyi/css/css-properties-values-api/animation/custom-property-animation-transform-list-multiple-values.html https://wpt.fyi/css/css-properties-values-api/animation/custom-property-animation-transform-list-single-values.html https://wpt.fyi/css/css-properties-values-api/animation/custom-property-transition-transform-function.html https://wpt.fyi/css/css-properties-values-api/animation/custom-property-transition-transform-list.html https://wpt.fyi/css/css-properties-values-api/at-property.html https://wpt.fyi/css/css-properties-values-api/registered-property-computation.html https://wpt.fyi/css/css-properties-values-api/registered-property-initial.html https://wpt.fyi/css/css-properties-values-api/register-property-syntax-parsing.html https://wpt.fyi/css/css-properties-values-api/typedom.html Flag name on chrome://flags#enable-experimental-web-platform-features Finch feature nameCSSVariables2TransformValues Requires code in //chrome?False Tracking bughttps://crbug.com/911156 Estimated milestones Shipping on desktop 120 DevTrial on desktop 115 Shipping on Android 120 DevTrial on Android 115 Shipping on WebView 120 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/5184552188510208 This intent message was generated by Chrome Platform Status <https://chromestatus.com/>. -- Rune Lillesveen -- 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/CACuPfeRL2cdKk0ES9dJS-CrA7oH-NcnUeJhAZ%2BLnWHkt7dq8yA%40mail.gmail.com.
