Re: Change bars

2011-05-01 Thread Stephan Thesing
Hello,

I made a patch for change-bars a while back.

See Bugzilla PR 48548
https://issues.apache.org/bugzilla/show_bug.cgi?id=48548

for a patch against /trunk from around March.

May or may not apply today.

As soon as I get my Linux machine to boot again, I could produce
another patch against a more recent /trunk.

Best regards
   Stephan

 Original-Nachricht 
 Datum: Sun, 1 May 2011 20:52:39 +
 Von: Fredrik Bengtsson fredrik.bengts...@lemontree.se
 An: fop-users@xmlgraphics.apache.org fop-users@xmlgraphics.apache.org
 Betreff: Change bars

 Hey,
 
 I'm trying to make a workaround for the lack of change bar support in FOP.
 I was thinking about making a two-pass solution that analyzes the area
 tree and adds additional content where necessary. I have really modest needs
 so maybe that could be workable.
  * No nesting, only one class
  * Just thin simple black lines, ok if they overlap since that won't be
 visible
  * Always positioned on the exact same x-position relative to the left
 page margin
  * Just apply on entire building blocks (such as paragraphs, a title etc)
 
 However, that would need some form of tagging in the AT, that is lifted
 from the transform stage. That is, ideally I'd like to be able to add a
 myns:changed=true attribute to my input docbook blocks, and that would 
 result
 in block elements in the AT that are decorated in such a way that I can
 pick it up.
 
 I can't just add a border-left at the fo level though, because the changed
 blocks might be part of a variable list or other types of elements that
 aren't flush with the left edge.
 
 Has anybody done something like this? Does it sound silly? Any other
 suggestions for workarounds?
 
 Regards,
 /Fredrik
 

-- 
Dr.-Ing. Stephan Thesing
Elektrastr. 50
81925 München
GERMANY

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RE: Change bars

2011-05-01 Thread Fredrik Bengtsson
Oh wow, yes that would obviously be better. Come to think of it, I've seen it 
mentioned but forgot. Thanks for the heads-up! I'm running a two-week-old trunk 
right now, but I'll consider backing up a bit for the purpose of testing that 
patch if it won't integrate on that.

I notice in your comments that there will be gaps between lines. I'm also using 
line-height greater than the regular line height, I'll see if the results are 
visually OK. The customer is being quite picky on some aspects of the 
rendering. But I assume that you working on this means you have had needs and 
at least partial success in filling them with this implementation?

Is it in any way considered to become part of the official trunk, at least to 
be conditionally enabled during build? I would think this is a pretty heavily 
requested feature, and limited support would be better than none!

Thanks for your work on this.
/F

-Original Message-
From: Stephan Thesing [mailto:thes...@gmx.de] 
Sent: Sunday, May 01, 2011 11:45 PM
To: fop-users@xmlgraphics.apache.org
Subject: Re: Change bars

Hello,

I made a patch for change-bars a while back.

See Bugzilla PR 48548
https://issues.apache.org/bugzilla/show_bug.cgi?id=48548

for a patch against /trunk from around March.

May or may not apply today.

As soon as I get my Linux machine to boot again, I could produce another patch 
against a more recent /trunk.

Best regards
   Stephan

 Original-Nachricht 
 Datum: Sun, 1 May 2011 20:52:39 +
 Von: Fredrik Bengtsson fredrik.bengts...@lemontree.se
 An: fop-users@xmlgraphics.apache.org 
 fop-users@xmlgraphics.apache.org
 Betreff: Change bars

 Hey,
 
 I'm trying to make a workaround for the lack of change bar support in FOP.
 I was thinking about making a two-pass solution that analyzes the area 
 tree and adds additional content where necessary. I have really modest 
 needs so maybe that could be workable.
  * No nesting, only one class
  * Just thin simple black lines, ok if they overlap since that won't 
 be visible
  * Always positioned on the exact same x-position relative to the left 
 page margin
  * Just apply on entire building blocks (such as paragraphs, a title 
 etc)
 
 However, that would need some form of tagging in the AT, that is 
 lifted from the transform stage. That is, ideally I'd like to be able 
 to add a myns:changed=true attribute to my input docbook blocks, and 
 that would result in block elements in the AT that are decorated in 
 such a way that I can pick it up.
 
 I can't just add a border-left at the fo level though, because the 
 changed blocks might be part of a variable list or other types of 
 elements that aren't flush with the left edge.
 
 Has anybody done something like this? Does it sound silly? Any other 
 suggestions for workarounds?
 
 Regards,
 /Fredrik
 

--
Dr.-Ing. Stephan Thesing
Elektrastr. 50
81925 München
GERMANY

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RE: Change bars

2011-05-01 Thread Fredrik Bengtsson
Despite Stephan's response, any pointers regarding a possible two-pass 
workaround is still valuable in case the patch proves insufficient.

I noticed in the list archives that it was once mentioned that attributes not 
in the fo namespace are passed on to the AT or IF. Is that still correct? In 
that case, I might just be able to pull off the idea I mentioned in my original 
e-mail. I'll try it out at work during the week. 

/F

-Original Message-
From: Stephan Thesing [mailto:thes...@gmx.de] 
Sent: Sunday, May 01, 2011 11:45 PM
To: fop-users@xmlgraphics.apache.org
Subject: Re: Change bars

Hello,

I made a patch for change-bars a while back.

See Bugzilla PR 48548
https://issues.apache.org/bugzilla/show_bug.cgi?id=48548

for a patch against /trunk from around March.

May or may not apply today.

As soon as I get my Linux machine to boot again, I could produce another patch 
against a more recent /trunk.

Best regards
   Stephan

 Original-Nachricht 
 Datum: Sun, 1 May 2011 20:52:39 +
 Von: Fredrik Bengtsson fredrik.bengts...@lemontree.se
 An: fop-users@xmlgraphics.apache.org 
 fop-users@xmlgraphics.apache.org
 Betreff: Change bars

 Hey,
 
 I'm trying to make a workaround for the lack of change bar support in FOP.
 I was thinking about making a two-pass solution that analyzes the area 
 tree and adds additional content where necessary. I have really modest 
 needs so maybe that could be workable.
  * No nesting, only one class
  * Just thin simple black lines, ok if they overlap since that won't 
 be visible
  * Always positioned on the exact same x-position relative to the left 
 page margin
  * Just apply on entire building blocks (such as paragraphs, a title 
 etc)
 
 However, that would need some form of tagging in the AT, that is 
 lifted from the transform stage. That is, ideally I'd like to be able 
 to add a myns:changed=true attribute to my input docbook blocks, and 
 that would result in block elements in the AT that are decorated in 
 such a way that I can pick it up.
 
 I can't just add a border-left at the fo level though, because the 
 changed blocks might be part of a variable list or other types of 
 elements that aren't flush with the left edge.
 
 Has anybody done something like this? Does it sound silly? Any other 
 suggestions for workarounds?
 
 Regards,
 /Fredrik
 

--
Dr.-Ing. Stephan Thesing
Elektrastr. 50
81925 München
GERMANY

NEU: FreePhone - kostenlos mobil telefonieren und surfen!   
Jetzt informieren: http://www.gmx.net/de/go/freephone

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Inclusing of a dynmaically generated SVG into XSL

2011-05-01 Thread Bernard Giannetti

Hi,

I have a dynamically generated SVG image (using Batik included with the FOP 
distribution) and I want to pass the SVG (say as a bytearrayoutputstream) into 
the render process.  The render process is typical: 

bufferedOutputStream = new BufferedOutputStream( new FileOutputStream( 
outputPDFFile ) );
fop = fopFactory.newFop( org.apache.xmlgraphics.util.MimeConstants.MIME_PDF, 
foUserAgent, bufferedOutputStream );
transformer = TransformerFactory.newInstance().newTransformer( new 
StreamSource( xslStylesheet ) );
source = new StreamSource( xmlData );
result = new SAXResult( fop.getDefaultHandler() );
transformer.transform( source, result );

I've found the following two articles which have given me a bit of an idea:

http://old.nabble.com/How-to-transform-embedded-FO--td31231565.html
http://old.nabble.com/Embedding-SVG-dynamically-into-fo-file-td30691616.html

but I can't seem to figure out once I have my SVG as a bytearraystream what to 
do with it:

SAXSource saxSource = new SAXSource( new InputSource( new ByteArrayInputStream( 
byteArrayOutputStream.toByteArray() ) ) );

Where do I put the saxSource?

At the other end, what tag/block do I use in the XSL file to place the SVG?  
Currently I pull in an SVG file using the tag

fo:block background-image=url('background.svg') background-repeat=repeat 
background-position-horizontal=center background-position-vertical=center 

which is fine for the file version...but not sure what to do for a dynamically 
generated version.

From what I've read it should be possible to create an SVG on the fly and pass 
it into the render process...just can't join all the dots!


Thanks in advance,

Bernard.