[ujac-support] [bram@itext.as.avontuur.org: iText - keeping tables on one page + patch]

[Bram <br...@uj...>]

Hi, please see below ... I've included the patch needed for UJAC to get
the keepTogether pdftable property working properly. This patch only works with the
version of Itext that is currently in CVS though!

Kind regards,
Bram

----- Forwarded message from Bram <br...@it...> -----

From: Bram <br...@it...>
To: ite...@li...
Subject: iText - keeping tables on one page + patch
X-Verification-Tag: brama@localhost

Hi,

I've been trying to generate PDF documents using a combination of iText
and UJAC. The documents have multiple tables, always nested inside other
containers. 

I noticed that, even though UJAC has a keepTogether attribute for
tables, that tables are still split across two pages even if it would
fit on a single page if a new page would have been started first. This
only occurs when tables are nested inside other containers (chapters,
sections), not when the table is directly added to a page.

The keepTogether attribute works by calling PdfDocument's fitsPage
method. However, after checking this the table is added to its current
container and not committed to the document just yet. This only happens
when the entire container embedding multiple tables is added to the
document. Therefore, the fitsPage test is useless at this point because
the content of the page only changes as the entire container is added.

To fix this problem, I decided to move the fitsPage check to iText
itself, when a PdfPTable object is actually added to the document
directly. I've attached the patch (for the CVS repository) to do this.
For it to work correctly, UJac also has to be patched because it has to
set the (new) keepTogether attribute for PdfPTable objects. But that's
for another mailing list..

I was hoping this could be included if deemed a sensible solution. If
there was another solution that I somehow overlooked or if the problem
is not clear, then I'd be more than hapy to hear about it.

Regards,
Bram

----- End forwarded message -----

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