perf(barcode): use elaphe library to generate barcodes

[fedexin40]

elaphe gives us the ability to use a lot of barcode types that's why this is a proposal of using it
instead of the others libraries

[lukebranch]

@fedexin40 ,

This looks like it would be a great addition to the Aeroo reports toolkit, nice work!

I'd also suggest opening a PR against the current (unofficial) version 9 fork here as well:

https://github.com/Yenthe666/Aeroo

as i'm sure @Yenthe666 would like to take a look as well.

@sraps , if you have time would you mind taking a look at this PR? It is quite a small PR to review and It would open up a huge range of other barcode options including the list you see here (Features section):

http://bwipp.terryburton.co.uk/

You can find an online demo here:

http://the-burtons.xyz/barcode-generator/

[sraps]

Hi, folks!
Yes, I have been looking for a decent library to enhance bar-coding functionality in Aeroo. I was more looking for a vector oriented enhancement to enhance quality. Even started to prototype EAN 13 vector library, but due to lack of funding, it stalled. Though it looked promising because bar-codes then would be scalable, retaining perfect quality.

I will take a look and will merge PR, as soon as possible.

[lukebranch]

@sraps ,

Excellent! Yes, the option for vector barcodes would be ideal I agree, although I believe elaphe supports EPS by default and then a conversion (using PIL) to non-vector formats.

I haven't done much research into the library yet, however being able to throw a vector barcode onto a PDF report from Aeroo would be very useful indeed, as it opens up a huge range of possibilities.

[lukebranch]

@sraps ,

I've just checked using the online demo and output is indeed possible in vector (EPS format) if required.

In order to take a look just create a demo EAN13 barcode for example, and then find the URL, mine was:

tmp/1d5923a6285f427d26e44d0bc343485c854e8cc0/barcode.png

and add this to the complete URL for example:

http://the-burtons.xyz/barcode-generator/tmp/1d5923a6285f427d26e44d0bc343485c854e8cc0/barcode.png

To take a look at the vector output just change the file format to .eps like this:

http://the-burtons.xyz/barcode-generator/tmp/1d5923a6285f427d26e44d0bc343485c854e8cc0/barcode.eps

I've opened this in illustrator and it's definitely a vector output.

The official repo is here if you're interested:

https://github.com/whosaysni/elaphe

[sraps]

IMHO, there it could be done without saving to disc. In the worst scenario, it might need to overload some methods in the elaphe library.