Contact emails [email protected], [email protected], [email protected], [email protected]
Explainer https://github.com/fserb/canvas2D/blob/master/spec/enhanced-textmetrics.md https://github.com/Igalia/explainers/blob/main/canvas-formatted-text/text-metrics-additions.md https://github.com/whatwg/html/issues/10677 Specification https://github.com/whatwg/html/pull/11000 Summary Expand the TextMetrics Canvas API to support selection rectangles, bounding box queries, and glyph cluster-based operations. This new functionality should enable complex text editing applications with accurate selection, caret positioning, and hit testing. Additionally, cluster-based rendering facilitates sophisticated text effects such as independent character animations and styling. Blink component Blink>Canvas Web Feature ID No information provided Risks Interoperability and Compatibility These are new features and we will get vendor agreement at WHATWG before shipping. So minimal interop risks beyond platform-specific metrics differences. Gecko: No signal (https://github.com/mozilla/standards-positions/issues/1144) WebKit: No signal (https://github.com/WebKit/standards-positions/issues/436) Web developers: Positive Developers want the ability to animated glyphs independendly (such as exploding sentences) and the ability to do eg selection on canvas text. The proposed APIs support these use cases and more. Other signals: Ergonomics None. Activation None. Security There is always a fingerprinting concern with HTML canvas. THe new features expose no novel fingerprinting surface (text metrics are already a fingerprinting concern). 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 information provided Debuggability DevTools supports querying the APIs by default. 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? Yes html/canvas/[element|offscreen]/text... 2d.text.measure.index-from-offset* 2d.text.measure.selection-rects* 2d.text.measure.text-clusters* Flag name on about://flags Experimental Web Platform Features Finch feature name ExtendedTextMetrics Requires code in //chrome? False Tracking bug https://issues.chromium.org/issues/341213359 Measurement UMA counters will be added for the new APIs. Estimated milestones DevTrial on desktop 141 DevTrial on Android 141 Link to entry on the Chrome Platform Status https://chromestatus.com/feature/5075532483657728 Links to previous Intent discussions Intent to Prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CADgYMVdqo4PBs4OkGqVncRizs8vtX4YtFLDcK%2BRxdYo_wnaRJQ%40mail.gmail.com 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/6903cb7b.050a0220.56be2.0a7a.GAE%40google.com.
