[NTG-context] Re: QR Code

[Pablo Rodriguez via ntg-context <ntg-context@ntg.nl>]

On 12/18/23 20:34, Henning Hraban Ramm wrote:
> [...]
> Are you using MkIV (LuaTeX) or LMTX (LuaMetaTeX)?

Many thanks for your reply, Hraban.

I understood my issue with your reply (I known, your answer is intended
to Uschi).

It is also in the sent file:

 Creator:
   LuaMetaTeX 2.10.11 20230908 + ConTeXt LMTX 2023.09.26 18:19
 PDF Producer:
   LuaMetaTeX-2.10.11

> I guess a missing EPS means you load the MkIV version of the module,
> probably because "m-zint".
>
> I can’t help with Windows; since Hans developed it on Windows, it should
> work (but don’t ask me how).

I will try to explain what I understand from this (intended for Uschi).

Given that there are two modules (m-zint and zint), there are two options:

1. Either you use the LMTX module (\usemodule[zint]) and you need the
Zint library (as explained in
https://wiki.contextgarden.net/Barcodes#Zint_module).

2. Or you use the MkIV module (\usemodule[m-zint]) and you need the Zint
binary installed and CMD should be able to invoke it (already knowing
its past).

You may have the Zint binary installed, ConTeXt may be generating the
required EPS files, but either Inkscape is not installed (or its path is
unknown to the system), or ConTeXt cannot simply find where the
converted PDF versions of the zint images are.

If I have the following source in testing-barcodes.tex:

  \usemodule[m-zint]
  \starttext
  \startTEXpage[offset=1dk]
  \barcode[alternative=isbnx, text=9783865419026, width=4cm]
  \stopTEXpage
  \stoptext

ConTeXt compiles it generating to extra files (when compared to the pure
zint module for LMTX only):

  zint-isbnx-fe90eda0e93cf020312eps
  m_k_i_v_zint-isbnx-fe90eda0e93cf020312_eps_c60ccda70ef.pdf

(Removed some characters in strings so file names fit in a single line.)

The first file is generated by the Zint binary itself. The second one is
the automatic conversion (through Inkscape) that ConTeXt needs to embed
EPS (and SVG) files in the final PDF document.

If m_k_i_v_zint-*.pdf files are missing, the problem might be that
Inkscape isn’t installed (or its path is unknown to the system).

If also zint-*.eps files are missing, you should find where Zint is
generating them.

Just in case it might help,

Pablo
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