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Re: [xsl] FO: Blank Pages at End of Page Sequence

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At 2006-03-25 23:05 -0700, Jordan (Wraezor) wrote:

I got it sort of working, however, instead of being truly blank, like I
want, it is including the header and footer like the rest of the pages.
I suspect what's happening is it's not using the blank page, but instead
is just continuing on with the Left/Right pages.

Correct, given the code fragment you cited.

However, oddly enough,
when FOP (0.20.5) completes the PDF generation,

I cannot comment specifically on FOP behaviour ... sorry.

it does label the
appropriate pages as "(blank)" in its output....but they'll still contain
a header and footer, just no flow.

Looking at your page geometry, I don't see why it would do that.

So, my question is...how can I retain the same behaviour (insert blank
were needed), but also make it strip off the static-content that it seems
to want to retain.  It seems it never calls the Blank
simple-page-master...and I don't know why.

Any ideas?

Because of the order of your alternatives.

My page-sequence-master is as follows:

<fo:page-sequence-master master-name="chapter">
  <fo:repeatable-page-master-alternatives>
    <fo:conditional-page-master-reference master-reference="ChapterFirst"
page-position="first"/>
    <fo:conditional-page-master-reference master-reference="BodyLeft"
odd-or-even="even"/>
    <fo:conditional-page-master-reference master-reference="BodyRight"
odd-or-even="odd"/>
    <fo:conditional-page-master-reference master-reference="Blank"
blank-or-not-blank="blank" />
  </fo:repeatable-page-master-alternatives>
</fo:page-sequence-master>

When an XSL-FO processor needs a new page geometry from the sequence of geometries, it walks through each conditional reference *in document order of the alternatives*, finding the first reference whose properties match the properties of the page being formatted and then stops looking. Since you have both choices of page parity before page blankness, then it will never reach the alternative for page blankness.

Positioning your fourth reference first will test true for blank pages before testing true for one of the page parity tests. It is okay for it to be first in the list for pages with flow because it will never test true for pages with flow ... but the way you have it now pages without flow will test true for page parity before they test true for blankness.

I hope this helps.

. . . . . . . . . . . Ken

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