[Feature Request] Ability to stop and start scanning while using Html5QrcodeScanner

[ZhuanM]

Is your feature request related to a problem? Please describe.
Not having the ability to stop the scanning process (without removing/cleaning the entire scanner itself - but simply not letting the scanner scan) and then being able to start scanning again while using Html5QrcodeScanner makes no sense since it is doable (according to the documentation) with Html5Qrcode by using the "start" and "stop" functions.

Describe the solution you'd like
I'd like to have the ability to stop and start scanning while using Html5QrcodeScanner by having the "start" and "stop" functions that are available with Html5Qrcode.

Describe alternatives you've considered
The alternative is to use Html5Qrcode but that means that the developer has to go through rebuilding the entire user interface just to have the "start" and "stop" functions available.

[mebjas]

I'd like to have the ability to stop and start scanning while using Html5QrcodeScanner by having the "start" and "stop" functions that are available with Html5Qrcode.

This makes sense, would you like the whole UI to reset to beginning in that case?

[ZhuanM]

This makes sense, would you like the whole UI to reset to beginning in that case?

Well, if it were to reset the UI then it would be the same as using the "clean" function alongside with re-creating a new scanner. I think a new functionality that would be more useful for this library to have is the ability to not allow further scans but without clearing the entire scanner from the UI. Let's say that the developer wants the scanning to stop after, for example, the first or second or even third scan, but still without closing the scanner and by still showing the video camera feed with the scan box, and after a certain point in the code to be able to have it functionally scanning again.

[mebjas]

So it's expected to work like a stop() method should programatically trigger the stop button?

[ZhuanM]

I want to apologize for misunderstanding the stop() and start() functionality of the Html5Qrcode class. As I worked even more with the Html5Qrcode class I became more familiar with them and it's not what I really intented to request as a feature. What I actually intented as a feature request is in my latest comment - the ability to be able to stop the scanning process with a NEW function (which doesn't exist on any class) without clearing the UI and while continuing to show the video camera feed with the QR shading scan box. Alongside with that new stopping function there should obviously also be a NEW function (which also doesn't exist on any class) which would be able to have the scanner be functionally scanning again and being able to read new Barcodes. Basically the whole idea is to have 2 new functions - stop reading and start reading.

[mebjas]

I think what you are looking for is pause() and resume() methods both at the Html5QrcodeScanner and Html5Qrcode level.

[ZhuanM]

Yes, this would be a more accurate naming of the functions I intented to request.

[SmitharyZach]

Yes I would love a pause feature.

I want to scan an item, show a pop up for the user to confirm the scan, then continue scanning. This is so a single item is not scanned twice and the end user can still keep the scanner open to quickly move through a line

[mebjas]

Support added with version 2.1.0

• Github release: https://github.com/mebjas/html5-qrcode/releases/tag/v2.1.1
• npm: https://www.npmjs.com/package/html5-qrcode/v/2.1.1
• unpkg: https://unpkg.com/[email protected]/html5-qrcode.min.js

[mebjas]

(reopen if there are some issues).

[S-Rajkumar]

So it's expected to work like a stop() method should programatically trigger the stop button?

is this done ?
i need to stop scanning by programatically.