On 2/18/25 12:15 PM, Chromestatus wrote:
Contact emails
sakha...@chromium.org
Explainer
None
Could you describe what these features allow for (beyond what you have
in the summary), maybe with some example code? It's not obvious to me
what it means practically to represent proportional distance of a
container feature, for example.
Specification
https://drafts.csswg.org/css-values-5/#progress
Summary
The progress(), media-progress(), and container-progress() functional
notations represent the proportional distance of a given value (the
progress value) from one value (the progress start value) to another
value (the progress end value). They allow drawing a progress ratio
from math functions, media features, and container features, respectively.
Blink component
Blink>CSS
<https://issues.chromium.org/issues?q=customfield1222907:%22Blink>CSS%22>
TAG review
None
TAG review status
Not applicable
Risks
Interoperability and Compatibility
None
/Gecko/: No signal
Can we request one please?
/WebKit/: Shipped/Shipping
/Web developers/: Strongly positive Mostly for calc() hacks like
getting rid of units
/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
None
Will this feature be supported on all six Blink platforms
(Windows, Mac, Linux, ChromeOS, 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-values/progress-computed.tentative.html
https://wpt.fyi/css/css-values/media-progress-computed.tentative.html
https://wpt.fyi/css/css-values/container-progress-computed.tentative.html
These tests are all failing in Chromium. Any reason why? Also, they
shouldn't be considered tentative tests now, correct?
Flag name on about://flags
CSSProgressNotation
Finch feature name
None
Non-finch justification
None
Requires code in //chrome?
False
Tracking bug
https://issues.chromium.org/issues/40944203
Estimated milestones
Shipping on desktop 135
Shipping on Android 135
Shipping on WebView 135
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/5112558941634560?gate=5096732792455168
This intent message was generated by Chrome Platform Status
<https://chromestatus.com>.
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