[Koha-devel] [Koha] barcodes,

[Joe Atzberger]

Note: This would dramatically increase the resulting filesize and the
computational cost of delivering it.

2009/7/3 Chris Nighswonger <cnighswonger at foundations.edu>

> On Sat, Jun 27, 2009 at 4:27 PM, Chris Nighswonger <
> cnighswonger at foundations.edu> wrote:
>
>> On Sat, Jun 27, 2009 at 8:10 AM, mike re-v<mrmrmr50 at yahoo.com> 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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