replacing images in PDF documents
Dear list, I have the following situation, that I would like to solve using ConTeXt. I have to generate a bunch of PDF documents daily, that someone else has to validate (put a stamp on it [let’s put it that way]). It might be a physical stamp, but it might be also a vector image. One of the issues is that the stamp has a different place in each document (almost). Another issue is that the stamp should be added after the document is generated, not before. Having the following sample: \starttext I want this image replaced: \externalfigure[cow][scale=200] \stoptext After generating the document (and not modifiying or recompiling the source), is there a way to replace the image with another one? Many thanks for your help, Pablo -- http://www.ousia.tk
On 2/15/2015 1:27 AM, Pablo Rodriguez wrote:
Dear list,
I have the following situation, that I would like to solve using ConTeXt.
I have to generate a bunch of PDF documents daily, that someone else has to validate (put a stamp on it [let’s put it that way]).
It might be a physical stamp, but it might be also a vector image.
One of the issues is that the stamp has a different place in each document (almost).
Another issue is that the stamp should be added after the document is generated, not before.
Having the following sample:
\starttext I want this image replaced: \externalfigure[cow][scale=200] \stoptext
After generating the document (and not modifiying or recompiling the source), is there a way to replace the image with another one?
in principle you can append an image (xform) tit the pdf file, and then overload the old image object with the new content (using revision numbers of objects + extra xref table) but i never did that myself Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------
On 02/15/2015 01:18 PM, Hans Hagen wrote:
On 2/15/2015 1:27 AM, Pablo Rodriguez wrote:
[...] After generating the document (and not modifiying or recompiling the source), is there a way to replace the image with another one?
in principle you can append an image (xform) tit the pdf file, and then overload the old image object with the new content (using revision numbers of objects + extra xref table) but i never did that myself
Many thanks for your reply, Hans. Could this be implemented in ConTeXt? I guess that the new document generation could be achieved with something like: \setuppapersize[A4][A4] \setuplayout [backspace=0pt, topspace=0pt, width=middle, height=middle, location=middle, header=0pt, footer=0pt] \starttext \insertpages[document.pdf][width=0pt] \stoptext The command could be something like: \replaceexternalfigure[oldimagefile][newimagefile] BTW, I have just checked that file names include full paths (such as in "/PTEX.FileName (/home/ousia/cow.pdf)". I guess that it would be safe that searching and replacement mechanism could avoid full paths. Many thanks for your help, Pablo -- http://www.ousia.tk
participants (2)
-
Hans Hagen -
Pablo Rodriguez