[XeTeX] [tex-live] Seemingly inexplicable shift in page origin between TL 2014 and TL 2016

[Ross Moore]

Hi Phil,

On Jul 14, 2016, at 10:02 PM, Philip Taylor <P.Taylor at Rhul.Ac.Uk<mailto:P.Taylor at Rhul.Ac.Uk>> wrote:


Hallo David, and thank you for your suggestions.  I have now found the following :

1) The primary cause of the displacement is the PDF/X-1A:2003 specials -- remove these, and the page returns to its normal vertical position, but shifted outwards (leftwards) somewhat;
2) The use of \usepackage {color} within e-plain's \beginpackages ... \endpackages; in TeX Live 2016, this makes the page size considerably wider, IFF the PDF/X-1A specials are not emitted.

The displacement is visible both in TeXworks viewer and in Adobe Acrobat.


I think what you are seeing is due to the  /CropBox settings.
A PDF viewer shows the contents of the cropped area,
scaling to fill either the width or height or both.

There are 2 kinds of test that you can do.

1.  Print a few pages of your document, once with the \specials, once without.
    Is there any difference in the position of your content on the printed page?

2. Vary the numbers in  /CropBox [ a b c d ] ;
    such that (a,b) is bottom-left  and  (c,d)  is top-right corners of a rectangle.
    Values such as  [ 200 200 300 300 ] should crop to a small-ish portion of a page,
    which is then scaled up to fit your window-size.
   Observe the value of your browser’s scaling factor.

   With different values of [ a b c d ] you can simulate vertical and horizontal shifts,
to a small extent, according to how much smaller the /CropBox is, compared to
the /MediaBox.

Does this interpretation agree with what you observe?



A4 is indeed the default in both, and the difference between A4 and letter is only 3/4", whereas it appears to require a 1" correction ...

** Phil.


Cheers,

Ross


Dr Ross Moore

Mathematics Dept | Level 2, S2.638 AHH
Macquarie University, NSW 2109, Australia

T: +61 2 9850 8955  |  F: +61 2 9850 8114<tel:%2B61%202%209850%209695>
M:+61 407 288 255<tel:%2B61%20409%20125%20670>  |  E: ross.moore at mq.edu.au<mailto:rick.minter at mq.edu.au>

http://www.maths.mq.edu.au<http://mq.edu.au/>


[cid:image001.png at 01D030BE.D37A46F0]<http://mq.edu.au/>


CRICOS Provider Number 00002J. Think before you print.
Please consider the environment before printing this email.<http://mq.edu.au/>

This message is intended for the addressee named and may
contain confidential information. If you are not the intended
recipient, please delete it and notify the sender. Views expressed
in this message are those of the individual sender, and are not
necessarily the views of Macquarie University.<http://mq.edu.au/>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://tug.org/pipermail/xetex/attachments/20160714/956c1526/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 4605 bytes
Desc: image001.png
URL: <http://tug.org/pipermail/xetex/attachments/20160714/956c1526/attachment-0001.png>