Re: [Koha] barcodes,

On Sat, Jun 27, 2009 at 4:27 PM, Chris Nighswonger <cnighswonger@...> wrote:

On Sat, Jun 27, 2009 at 8:10 AM, mike re-v<mrmrmr50@...> wrote:
>
> Greetings,
> print to file and send it to me, I'll see if I can open it.
> Alternatively, hexedit will open, it and it could look at the leader
> and the end byte codes to see what it is you are producing.Then compare what you are producing to what works.
>
> from the command line $ hexedit foo.pdf
>

Alternately you can just open the pdf in a plain text editor and check
to see that the barcode data is there. PDF is a sort of mangled Post
Script stream.


Below is the stream for a single item. The line with the series of
zeros and ones is the barcode. However, I can confirm that the
barcodes do not display in Reader 9.0 while they do in 7.0. Versions
8.0 and 9.0 use PDF version 1.7 while 7.0 uses 1.6. There may be a
subtle difference in syntax that causes the breakage. I'll open a bug
and try to take a look at it next week.

The issue here is not a Koha issue, but *probably* an issue where Adobe Reader does not maintain backward compatibility. Fortunately the fix is not so bad. We just switch from embedding the barcodes as a Type3 font to graphical embedding. I'll submit a patch later today against the current HEAD. It will need to be back-ported to the 3.0.x branch as well.

Regards,
Chris

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