Re: [csswg-drafts] [css-images][css-values][css-gcpm] qrcode() for generating QR code images from URLs (#6544)

Sorry, just checking ISO18004 for confirmation and there are actually _four_ ECC levels, which have the highly descriptive names `L` `M` `Q` and `H` in ISO18004:2006 (what I have here). I've no idea what Q means. `quite-high-ecc`?

* Yes to automatically encoding; for text data, the algorithm for how to do this optimally is part of the spec. ECI mode switching means any UTF-8 character can be encoded.
* I've personally never seen a structured append qrcode, dItto micro-QR. Personal opinion on these is they're rare going on theoretical, but I'm prepared to be corrected.
* Yes, a minimum amount of whitespace is required around the code to make it scan (the "quiet zone"). I'd suggest this should be part of the intrinsic dimensions, as otherwise a user who wants to generate qrcodes to spec is going to have to calculate it themselves, which seems bad. Additional padding seems useful for images in general to me: https://github.com/w3c/fxtf-drafts/issues/398


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Received on Tuesday, 9 November 2021 20:05:14 UTC