UPC Code first and check digit off image

[GregJohnStewart]

This could be counted as usererror? But I noticed that when making a UPC-A code, I needed to set the horizontal quiet zone high in order to include the first and check digit at all. Otherwise, they are cut out of the image entirely.

I believe these should be included in any case, where the width of the image would be wide enough to include them.

Given quietZone is part of the UPD/etc spec, maybe incorporate that quietZone, and add additional based on the setting? Or enforce a minimum quiet zone?

You can see this effect in the gui, even (the check digit is cut off, the first digit is cut off entirely):

Example of barcode generated with extra horizontal quiet zone:

Codes I have found with this issue:

• UPC (A & E) Upc
• EAN

[gredler]

I need to see how other libraries handle this. This has come up once or twice before, and I remember not being fully satisfied with any of the solutions on the table. Let me know if you've seen how other systems / libraries / applications address this!

[GregJohnStewart]

I'm unsure how other libs handle it, but my understanding of the UPC spec would cover this, basically enforcing the minimum quiet zone;

https://irp-cdn.multiscreensite.com/3b3ce2b8/files/uploaded/UPC_Barcode_Standards_2020_7tZ2WJfJQO2WGf2JDUW7.pdf

Though I would imagine font size and other similar settings would become a factor? Not a huge deal to me personally given I default to svg, but still.