[HTML Canvas] TextMetrics Additions

[schenney-chromium]

Request for Mozilla Position on an Emerging Web Specification

• Specification title: HTML
• Specification or proposal URL (if available): Canvas TextMetrics additions for editing and text styling whatwg/html#10677
• Explainer URL (if available): https://github.com/Igalia/explainers/blob/main/canvas-formatted-text/text-metrics-additions.md
• Proposal author(s) (@-mention GitHub accounts): @schenney-chromium, @AndresRPerez12, @fserb
• Caniuse.com URL (optional):
• Bugzilla URL (optional):
• Mozillians who can provide input (optional):
• WebKit standards-position: [HTML Canvas] TextMetrics Additions for Editing and Graphic Design WebKit/standards-positions#436

Other information

This proposal is moving through WHATWG and we are seeking the input of Mozilla folks. There is a Chromium implementation and portions are landing in WebKit already. Please see the issue discussion for known concerns.