Barcode not printed about python-escpos

[belono]

Hi @tuxmaster5000 !

Add the width=2 parameter to the barcode() method to reduce the module width of the rendered barcode to the minimum size:

p.barcode("12345678", "EAN8", width=2)

Note that, due to your printer having a low resolution, some long barcode types will not fit into the paper raising the former exception.

[tuxmaster5000]

Which the width=2 option, the printer starts printing, but only garbage output.

[belono]

Yeah, this is the same as in #598 . The printer does not support native hardware bar-code printing so the library automatically switches to software bar-code to render an image of the bar-code and relies on the image() method to print the image (bar-code). Again, the default values of the image() method are incompatible with the TM-U2xx series, so the printer ends up printing garbage.

We could workaround the barcode() method too to allow passing custom parameters to the image() method through its force_software parameter, taking care if possible of not break the current behavior of force_software which selects the best render mode based in the printer capabilities profile data.
However, if it is not too urgent for @tuxmaster5000 to have bar-code working I think it would be easier to add a field in the capabilities database and fix all this issues at a time.

[tuxmaster5000]

Hi @belono it will not be so urgent, because after fixed the qr part, this was an try if this also works.
I need more the qr code function, so waiting will not be an problem.