Send tab: scan QR from screen and/or image

[mpeter50]

The scan function currently allows scanning the transaction details from a connected camera for quick input.
However, when there is no camera connected, the function does not work, and laptop users with a built-in camera can only scan from their phone, paper, or some other surface.

I think that for online shopping, it would be useful to be able to scan the code from the screen, for when it is displayed in a web browser, or from an image file without opening it in an image viewer.
Extending the scan feature like this would benefit desktop and laptop users too.

[tobtoht]

You can paste a QR code into the 'Pay to' field on the Send tab and it will auto-fill the details.

I'll have to check if scanning the screen can be implemented reliably cross-platform.

[mpeter50]

Oh, thats pretty useful! Thanks for letting me know. I see it can process monero: protocol URLs.

Now I also see it is mentioned in the built-in docs. I think it would be worth to consider making this information more visible, e.g. with an information button or popup near the "Pay to" label. I have just discovered that label is clickable, maybe the short description could be extended with "or paste a QR code".

The Monero GUI has a "Grab QR code from screen" button above the address field, maybe their approach can be reused here.