Add a preview in settings about moodle-block_qrcode

[Dagefoerde]

Hi, thanks for sharing your idea. However, I would strongly suggest using logo images that look identical, regardless of the format. The case that you describe sounds to me like the plugin was misconfigured by using different images. In the browser, we strictly use the SVG format as it offers the best resolution in any environment.

Your suggestion leads to my idea that we could show a preview while configuring the block so that an administrator can see whether both images actually look identical. What do you think?

[OlenaTatarintseva]

I think that's a good idea, especially when adding an image, I've noticed that the .svg filemanager holds 'default' image that is 'hidden', so when the admin/teacher adds a .png image, he may not be aware of the fact that .svg already exists and it's different. I hope this makes sense.

[Dagefoerde]

It does make sense indeed. Thanks for your feedback! I took the liberty of changing title and description of the issue to reflect this.

We will put this on our backlog. As usual, please feel free to help. If you can provide a patch, please create a pull request that we will be happy to review. Thank you very much.