I'm wondering if `CanvasRenderingContext2D.letterSpacing` and `CanvasRenderingContext2D.wordSpacing` should also support percentage values?
Currently, it seems this isn't implemented. 在2025年11月12日星期三 UTC+8 23:15:38<Daniel Bratell> 写道： > I am sorry for the missing mail. > > LGTM1 from me so now you have the three necessary LGTMs. I hope the delay > hasn't caused too many problems. > > /Daniel > On 2025-11-07 18:59, Mike Taylor wrote: > > Sure, let's do this in reverse order: LGTM2 > > (both Daniel and I have already approved on chromestatus) > On 11/7/25 4:54 a.m., Philip Jägenstedt wrote: > > LGTM3 as you already have two LGTMs on the original thread. > > @Mike Taylor @Daniel Bratell would you mind repeating your LGTMs here and > on the chromestatus entry? > > On Thu, Nov 6, 2025 at 9:04 PM Minseong Kim <[email protected]> wrote: > >> *Contact emails* >> [email protected] >> >> *Specification* >> https://www.w3.org/TR/css-text-4/#propdef-letter-spacing >> https://www.w3.org/TR/css-text-4/#propdef-word-spacing >> >> *Summary* >> Enables percentage values for the letter-spacing and word-spacing CSS >> property, as defined in the CSS Text Module Level 4 spec. Percentage values >> are calculated relative to the advance measure of the space character >> (U+0020). This gives developers more robust and flexible control over >> typography, particularly in responsive designs where text spacing needs to >> adapt to different viewports and font sizes. >> >> *Blink component* >> Blink>Layout>Inline >> <https://issues.chromium.org/issues?q=customfield1222907:%22Blink%3ELayout%3EInline%22> >> >> *Web Feature ID* >> letter-spacing <https://webstatus.dev/features/letter-spacing> >> >> *Motivation* >> The 'letter-spacing' and 'word-spacing' properties currently only accept >> fixed length values (e.g. px, em), which are inflexible in responsive >> designs. When font sizes or container dimensions change, this fixed spacing >> can become disproportionate, forcing developers to write complex media >> queries or use JavaScript to maintain readable text. Introducing percentage >> values allows spacing to be defined relative to font-intrinsic metrics. >> This enables both letter and word spacing to scale proportionally with the >> font, simplifying the creation of robust and visually consistent typography >> across all devices without extra code. >> >> *Initial public proposal* >> *No information provided* >> >> *Search tags* >> letter-spacing <https://chromestatus.com/features#tags:letter-spacing>, >> word-spacing <https://chromestatus.com/features#tags:word-spacing> >> >> *TAG review* >> *No information provided* >> >> *TAG review status* >> Not applicable >> >> *Risks* >> >> >> *Interoperability and Compatibility* >> Risks are low. This is a support for new value of CSS properties. So >> sites not using properties won't be affected. Firefox and Safari has >> supported this feature for years. >> >> *Gecko*: Shipped/Shipping Firefox is failing so many letter-spacing >> tests: >> https://wpt.fyi/results/css/css-text/letter-spacing?label=experimental&label=master&aligned. >> >> But those are related the line ending or boundary handling of >> letter-spacing, not the percentage values. Related discussion: >> https://github.com/w3c/csswg-drafts/issues/1518 >> >> *WebKit*: Shipped/Shipping (https://github.com/WebKit/WebKit/pull/18771) >> >> *Web developers*: No signals ( >> https://issues.chromium.org/issues/327740939) The issue has 3 votes. >> >> *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? >> No >> >> >> *Debuggability* >> *No information provided* >> >> *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 >> - "letter-spacing-percentage-001.html" file in >> https://wpt.fyi/results/css/css-text/letter-spacing >> - "word-spacing-percentage-001.html" file in >> https://wpt.fyi/results/css/css-text/word-spacing >> - "letter-spacing-*.html" files in >> https://wpt.fyi/results/css/css-text/parsing >> - "word-spacing-*.html" files in >> https://wpt.fyi/results/css/css-text/parsing >> >> *Flag name on about://flags* >> enable-experimental-web-platform-features >> >> *Finch feature name* >> CSSLetterAndWordSpacingPercentage >> >> *Rollout plan* >> Will ship enabled for all users >> >> *Requires code in //chrome?* >> False >> >> *Tracking bug* >> https://issues.chromium.org/issues/327740939 >> >> *Estimated milestones* >> Shipping on desktop 145 >> Shipping on Android 145 >> Shipping on WebView 145 >> Shipping on iOS 145 >> >> *Link to entry on the Chrome Platform Status* >> https://chromestatus.com/feature/5106867491700736?gate=6484265969778688 >> >> 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 [email protected]. >> To view this discussion visit >> https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CA%2BLL-R6VKL-Muuq-FDTD9KL0prpPyRny00TCCmYmue6L17Hdyg%40mail.gmail.com >> >> <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CA%2BLL-R6VKL-Muuq-FDTD9KL0prpPyRny00TCCmYmue6L17Hdyg%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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/CAARdPYebYDApQqccJ_9kxjD4hNz3PRTAL%2BPSUzyn_A6fKNe2qw%40mail.gmail.com > > <https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAARdPYebYDApQqccJ_9kxjD4hNz3PRTAL%2BPSUzyn_A6fKNe2qw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > -- You received this message because you are subscribed to the Google Groups "blink-dev" group. 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