Hi Rob,
sure you are facing a bug:
when there is no room on 1 page to insert a line-break, then, if IPD
change on next page, the described FOPException is thrown.
See the attached minimal XSL-FO: when you remove the expression
" + 0.001pt" from the margin-top value, it works like charm.
Can you please fill in a bug on FOP bug list, attaching this minimal XSL-FO?
As a workaround, you should decrease the margin-top of your
simple-page-master "gallery6-page-3" (leaving room for 2 * line-height,
and/or add a break-before on the %block% that come in 1st place of your
page 4.
Le 01/06/2012 04:00, Rob Sargent a écrit :
We're using FOP-1.0.
Admittedly it may be a stretch to call these "simple" page layouts but
the attached FOs show that the ordering of the page layouts can cause
the generation of the pdf to fail. The fo-fails.xml exists with
Caused by: java.lang.UnsupportedOperationException: Don't know how
to restart at positionNonLeafPos:927(Flow@61f93f69[@id=]],
NonLeafPos:399(BlockContainer@52ab9d99[@id=group-Normal Development
and Anatomy of the Cerebral Commissures]],
NonLeafPos:106(BlockContainer@e09d7b9[@id=]],
NonLeafPos:7(Block@58a2b90b[@id=]], LeafPos:-1(pos=29,
lm=Block@58a2b90b[@id=]])))))
at
org.apache.fop.layoutmgr.AbstractBreaker.doLayout(AbstractBreaker.java:377)
at org.apache.fop.layoutmgr.PageBreaker.doLayout(PageBreaker.java:85)
at
org.apache.fop.layoutmgr.PageSequenceLayoutManager.activateLayout(PageSequenceLayoutManager.java:107)
at
org.apache.fop.area.AreaTreeHandler.endPageSequence(AreaTreeHandler.java:238)
at
org.apache.fop.fo.pagination.PageSequence.endOfNode(PageSequence.java:120)
at
org.apache.fop.fo.FOTreeBuilder$MainFOHandler.endElement(FOTreeBuilder.java:349)
at org.apache.fop.fo.FOTreeBuilder.endElement(FOTreeBuilder.java:177)
at
com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:261)
at org.jdom.output.SAXOutputter.endElement(SAXOutputter.java:1046)
at org.jdom.output.SAXOutputter.element(SAXOutputter.java:903)
at org.jdom.output.SAXOutputter.elementContent(SAXOutputter.java:1093)
at org.jdom.output.SAXOutputter.elementContent(SAXOutputter.java:1067)
at org.jdom.output.SAXOutputter.element(SAXOutputter.java:897)
at org.jdom.output.SAXOutputter.output(SAXOutputter.java:621)
at
org.jdom.transform.JDOMSource$DocumentReader.parse(JDOMSource.java:476)
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:636)
at
com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:707)
... 7 more
Some explaintion of the intent: The "three-side-page-*" s-m-ps usurp a
two-column text xsl-region body placing a static region over one of the
columns and the gallery6-page-* attempt to set the size of the
region-body to zero (creating a 'text-less' page).
Note that the gallery6-page-* layout was recently reworked to be
textless. Prior to that (developed originally in FOP-0.95) we had an
inch of text available and detected no order dependency amongst the
orderings of layouts.
And yes the s-m-ps are generated on the fly by the xsl translation,
whereby a static page definitions is loaded into a page-number specific
master, also left/right adjusted.
Furthermore, in other we also experience a single line of text on the
gallery6-page-*s only when preceded by a three-side-page-* s-m-p. If
necessary I will report that as a separate issue, but at this point I'm
hoping both symptoms are tightly related.
Any work-around much appreciated. If requested, I'm more than willing to
report this as a bug. Unfortunately we cannot wait for FOP-1.1 but we
could run off the trunk.
As I see it the diffs in the two attached FO's are entirely in the
static-regions as one would expect.
We're at crunch time and could go back to the original definition of
gallery6-page* but would /really/ rather not.
Cheers,
rjs
--
Pascal
<?xml version="1.0" encoding="UTF-8"?>
<fo:root xmlns:fo="http://www.w3.org/1999/XSL/Format"; font-size="1in" line-height="1">
<fo:layout-master-set>
<fo:simple-page-master page-width="8.5in" page-height="11in" master-name="gallery6-page-3">
<fo:region-body margin-right="0.1in" margin-top="9in + 0.001pt"/>
</fo:simple-page-master>
<fo:simple-page-master page-width="8.5in" page-height="11in" master-name="three-side-page-4">
<fo:region-body/>
</fo:simple-page-master>
<fo:page-sequence-master master-name="document-sequence">
<fo:single-page-master-reference master-reference="gallery6-page-3" />
<fo:single-page-master-reference master-reference="three-side-page-4" />
</fo:page-sequence-master>
</fo:layout-master-set>
<fo:page-sequence master-reference="document-sequence">
<fo:flow flow-name="xsl-region-body">
<fo:block>
text text text text text text text text text text text text text text
</fo:block>
</fo:flow>
</fo:page-sequence>
</fo:root>
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