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Posted to fop-users@xmlgraphics.apache.org by Jim Tivy <ji...@bluestream.com> on 2007/02/17 23:19:34 UTC
Page Slop
We tried to ship a project with .93. We almost made it, however something
we coined as "page slop" stopped us so we went back to FOP.20 and it looks
like we will ship with FOP .20. Were were using a trick of sizing even
pages as zero to avoid rendering on even pages because the customer wanted a
book with every left page blank.
We are using the Dita open toolkit XSLs to create the fo Xml which creates
tons of nested blocks. At any rate, if there was a large continguous block
following the blank even page it "pushed back" a couple of lines onto the
previous even page even though there was not space to render there and
issued the following error:
Feb 17, 2007 2:16:30 PM org.apache.fop.layoutmgr.PageSequenceLayoutManager$1
notifyOverflow
WARNING: Content of the region-body on page 8 overflows the available area
in block-progression dimension. (fo
:page-sequence, location: 129/74)
Here are the masters in use. If someone in looking into this is detail I
can send you the .fo file directly since the content is somewhat
confidential to the client.
<fo:layout-master-set>
<fo:page-sequence-master master-name="bothFlow">
<fo:repeatable-page-master-alternatives>
<fo:conditional-page-master-reference odd-or-even="odd"
master-reference="oddFlow"/>
<fo:conditional-page-master-reference odd-or-even="even"
master-reference="evenFlowBlank"/>
</fo:repeatable-page-master-alternatives>
</fo:page-sequence-master>
<fo:simple-page-master page-width="8.5in" page-height="11in"
margin-top="0in"
margin-bottom="0in" margin-left="0pc" margin-right="0pc"
master-name="oddFlow">
<fo:region-body margin-left=".5in" margin-right=".5in"
margin-top="1in" margin-bottom="1in"/>
<fo:region-before region-name="beforeOdd" extent="1in"/>
<fo:region-after region-name="afterOdd" extent="0.5in"/>
</fo:simple-page-master>
<fo:simple-page-master page-width="8.5in" page-height="11in"
margin-top="0in"
margin-bottom="0in" margin-left="0in" margin-right="0in"
master-name="evenFlowBlank">
<fo:region-body margin-left=".5in" margin-right=".5in"
margin-top="8in" margin-bottom="3in"/>
<fo:region-after region-name="afterFlowBlank" extent="0.5in"/>
</fo:simple-page-master>
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Re: Page Slop
Posted by Andreas L Delmelle <a_...@pandora.be>.
On Feb 25, 2007, at 21:40, Jim Tivy wrote:
Hi Jim,
> Below is my further info. Any follow up on this?
Sorry, missed this one the first time, it seems...
>> -----Original Message-----
>> From: Jim Tivy [mailto:jimt@bluestream.com]
>>
>> I had a look at these but they do not work. Unfortunatly we want
>> the page
>> layout engine to create the blanks as it renders the content of a
>> page
>> sequence.
OK, I think I see why you're using a zero-height region-body...
>> <snip />
>> Someone suggested this might be illegal in XSL - but it is
>> accepted in both
>> .20 and .93.
AFAICT from the Recommendation, what you're doing isn't illegal, and
since it seems to be working in the general case, you may just have
stumbled upon some kind of anomaly that would make a good testcase.
If you can, try to trim it down to the smallest possible FO file that
demonstrates the weird behaviour, and attach that to a Bugzilla
entry. (even if 'the smallest possible' means an FO generating at
least 8 pages)
That would certainly help a lot in tracking this down further.
TIA!
Andreas
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RE: Page Slop
Posted by Jim Tivy <ji...@bluestream.com>.
Hey Andreas or other
Below is my further info. Any follow up on this?
cheers
Jim
> -----Original Message-----
> From: Jim Tivy [mailto:jimt@bluestream.com]
> Sent: Sunday, February 18, 2007 11:41 PM
> To: fop-users@xmlgraphics.apache.org
> Subject: RE: Page Slop
>
>
> THanks for the response
>
> I had a look at these but they do not work. Unfortunatly we want the page
> layout engine to create the blanks as it renders the content of a page
> sequence. So the location of the blanks is not known beforehand and the
> blanks are not triggered from specific break-before directives.
> Instead the
> blanks we want will be triggered by the layout engine as it does its flow.
> When the layout engine goes to the even page, it will discover it has
> nowhere to render so it will do the static content, eject the
> page and go to
> the odd where there is lots of room.
>
> Someone suggested this might be illegal in XSL - but it is
> accepted in both
> .20 and .93.
>
> > -----Original Message-----
> > From: Andreas L Delmelle [mailto:a_l.delmelle@pandora.be]
> > Sent: Sunday, February 18, 2007 1:00 AM
> > To: fop-users@xmlgraphics.apache.org
> > Subject: Re: Page Slop
> >
> >
> > On Feb 17, 2007, at 23:19, Jim Tivy wrote:
> >
> > Hi,
> >
> > > We tried to ship a project with .93. We almost made it, however
> > > something
> > > we coined as "page slop" stopped us so we went back to FOP.20 and
> > > it looks
> > > like we will ship with FOP .20. Were were using a trick of sizing
> > > even
> > > pages as zero to avoid rendering on even pages because the customer
> > > wanted a
> > > book with every left page blank.
> >
> > IIC, then it should be unnecessary to size a page to zero to avoid
> > rendering on it...
> >
> > see: http://xmlgraphics.apache.org/fop/fo.html#fo-blank-pages
> >
> > Can you try out and see if the error disappears if you follow the
> > cited example?
> >
> > If not, then don't hesitate to report back, and we'll have a closer
> > look.
> >
> >
> > HTH!
> >
> > Cheers,
> >
> > Andreas
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: fop-users-unsubscribe@xmlgraphics.apache.org
> > For additional commands, e-mail: fop-users-help@xmlgraphics.apache.org
> >
> >
>
>
>
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>
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RE: Page Slop
Posted by Jim Tivy <ji...@bluestream.com>.
THanks for the response
I had a look at these but they do not work. Unfortunatly we want the page
layout engine to create the blanks as it renders the content of a page
sequence. So the location of the blanks is not known beforehand and the
blanks are not triggered from specific break-before directives. Instead the
blanks we want will be triggered by the layout engine as it does its flow.
When the layout engine goes to the even page, it will discover it has
nowhere to render so it will do the static content, eject the page and go to
the odd where there is lots of room.
Someone suggested this might be illegal in XSL - but it is accepted in both
.20 and .93.
> -----Original Message-----
> From: Andreas L Delmelle [mailto:a_l.delmelle@pandora.be]
> Sent: Sunday, February 18, 2007 1:00 AM
> To: fop-users@xmlgraphics.apache.org
> Subject: Re: Page Slop
>
>
> On Feb 17, 2007, at 23:19, Jim Tivy wrote:
>
> Hi,
>
> > We tried to ship a project with .93. We almost made it, however
> > something
> > we coined as "page slop" stopped us so we went back to FOP.20 and
> > it looks
> > like we will ship with FOP .20. Were were using a trick of sizing
> > even
> > pages as zero to avoid rendering on even pages because the customer
> > wanted a
> > book with every left page blank.
>
> IIC, then it should be unnecessary to size a page to zero to avoid
> rendering on it...
>
> see: http://xmlgraphics.apache.org/fop/fo.html#fo-blank-pages
>
> Can you try out and see if the error disappears if you follow the
> cited example?
>
> If not, then don't hesitate to report back, and we'll have a closer
> look.
>
>
> HTH!
>
> Cheers,
>
> Andreas
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: fop-users-unsubscribe@xmlgraphics.apache.org
> For additional commands, e-mail: fop-users-help@xmlgraphics.apache.org
>
>
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Re: Page Slop
Posted by Andreas L Delmelle <a_...@pandora.be>.
On Feb 17, 2007, at 23:19, Jim Tivy wrote:
Hi,
> We tried to ship a project with .93. We almost made it, however
> something
> we coined as "page slop" stopped us so we went back to FOP.20 and
> it looks
> like we will ship with FOP .20. Were were using a trick of sizing
> even
> pages as zero to avoid rendering on even pages because the customer
> wanted a
> book with every left page blank.
IIC, then it should be unnecessary to size a page to zero to avoid
rendering on it...
see: http://xmlgraphics.apache.org/fop/fo.html#fo-blank-pages
Can you try out and see if the error disappears if you follow the
cited example?
If not, then don't hesitate to report back, and we'll have a closer
look.
HTH!
Cheers,
Andreas
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RE: Page Slop
Posted by Jim Tivy <ji...@bluestream.com>.
One related fact.
When I played with keeps and getting rid of blocks FOP.93 went bezerk and
started loosing content - content vanished into thin air.
I did however, find that with a mix of keeps and removal of nested boxes I
was able to trick the bug out of existence - not something I could ship to a
customer tho since their content changes all the time.
> -----Original Message-----
> From: Jim Tivy [mailto:jimt@bluestream.com]
> Sent: Saturday, February 17, 2007 2:20 PM
> To: FOPUSERS
> Cc: Jim Tivy
> Subject: Page Slop
>
>
> We tried to ship a project with .93. We almost made it, however something
> we coined as "page slop" stopped us so we went back to FOP.20 and it looks
> like we will ship with FOP .20. Were were using a trick of sizing even
> pages as zero to avoid rendering on even pages because the
> customer wanted a
> book with every left page blank.
>
> We are using the Dita open toolkit XSLs to create the fo Xml which creates
> tons of nested blocks. At any rate, if there was a large
> continguous block
> following the blank even page it "pushed back" a couple of lines onto the
> previous even page even though there was not space to render there and
> issued the following error:
>
> Feb 17, 2007 2:16:30 PM
> org.apache.fop.layoutmgr.PageSequenceLayoutManager$1
> notifyOverflow
> WARNING: Content of the region-body on page 8 overflows the available area
> in block-progression dimension. (fo
> :page-sequence, location: 129/74)
>
> Here are the masters in use. If someone in looking into this is detail I
> can send you the .fo file directly since the content is somewhat
> confidential to the client.
>
> <fo:layout-master-set>
> <fo:page-sequence-master master-name="bothFlow">
> <fo:repeatable-page-master-alternatives>
> <fo:conditional-page-master-reference odd-or-even="odd"
> master-reference="oddFlow"/>
> <fo:conditional-page-master-reference odd-or-even="even"
> master-reference="evenFlowBlank"/>
> </fo:repeatable-page-master-alternatives>
> </fo:page-sequence-master>
> <fo:simple-page-master page-width="8.5in" page-height="11in"
> margin-top="0in"
> margin-bottom="0in" margin-left="0pc" margin-right="0pc"
> master-name="oddFlow">
> <fo:region-body margin-left=".5in" margin-right=".5in"
> margin-top="1in" margin-bottom="1in"/>
> <fo:region-before region-name="beforeOdd" extent="1in"/>
> <fo:region-after region-name="afterOdd" extent="0.5in"/>
> </fo:simple-page-master>
> <fo:simple-page-master page-width="8.5in" page-height="11in"
> margin-top="0in"
> margin-bottom="0in" margin-left="0in" margin-right="0in"
> master-name="evenFlowBlank">
> <fo:region-body margin-left=".5in" margin-right=".5in"
> margin-top="8in" margin-bottom="3in"/>
> <fo:region-after region-name="afterFlowBlank" extent="0.5in"/>
> </fo:simple-page-master>
>
>
>
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