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Re: [xsl] XSL:FO approach for facing-page translation

2014-02-07 13:05:07
Hi Martin,

I am not sure if it is possible to have two separate flows, one for recto and 
the other for verso pages.

If this is possible, then I would try a two-column table where each column has 
the width of the regular text. This should force the formatter to adjust the 
cell height according to the longer of both paragraphs. In the source language 
flow you would make sure to position the table in a way so that the source 
language is in the regular position, the target language should print white or 
transparent (and be mostly off the page). In the target language flow you do 
the opposite.

I saw something like this in a DTP program.

- Michael

Am 07.02.2014 um 19:43 schrieb Martin Holmes <mholmes(_at_)uvic(_dot_)ca>:

Hi all,

I have an interesting problem to solve with an edition of a source text which 
has an accompanying translation.

The text is in paragraphs, with each paragraph in the original matching one 
in the translation. In XHTML, I'm easily able to render the two texts in a 
borderless table, with a row for each paragraph, giving a nice readable 
parallel-text view.

I need to do something similar in PDF, using XSL:FO. The ideal would be to 
have the original text on the verso page, with the equivalent translation on 
the facing recto. But I can't figure out a practical approach to this. For 
one thing, I don't see how I can render individual pages from one text and 
then the other text in alternating fashion, and for another, I don't see any 
way to keep the two texts in sync. I can disallow page-breaks within 
paragraphs, but I'd have to be extraordinarily lucky for the two texts to end 
up breaking at the same points every time; it would just take one 
slightly-shorter paragraph on one side to put them out of sync by a 
paragraph. Such a strategy would also be rather a paper-waster, because many 
pages would have a lot of blank space at the bottom.

Has anyone every done anything like this, and if so, do you have any advice? 
I can imagine that it might be done in a horribly manual fashion by trial and 
error, working page-by-page, but I really don't want to get into that. I'm 
happy to pre-process the text multiple times before it goes to the XSL:FO 
stage., Perhaps there are ways to measure (for instance) how much space a 
paragraph will take, and then adjust page-margins or spacing by small 
increments to preserve alignment between the two texts, but I haven't seen 
examples of such an approach.

All advice much appreciated.

Cheers,
Martin


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Michael Müller-Hillebrand
mmh(_at_)docufy(_dot_)de




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