Peter Kullmann wrote:
As an alternative approach for c) one could create tests along
the following lines: Suppose you want to test left margin
properties of a block. For this a simple fo file is rendered as
a bitmap. The bitmap will not be compared to a reference bitmap
but some elementary
Christian Ziesemer wrote:
Do you know other projects dealing with high quality typesetting with
Java or if Java 1.5 will bring improvements? I'm thinking about writing
my diploma thesis about how to extend the current/implement a
typesetting API for Java.
Batik extends text attributes with
It might be helpful to take the renderer programmer's view:
- A meaningful renderer interface has to be specified now, i.e. the
representation of pages either in memory or serialized. More supported XSL
properties lead to bigger storage requirements.
- Renderers take over pages consisting from
Orientations, writing directions, bidi, Asian languages, precise
coordinates, drawing priorities, page caching, paragraph formatting: this
renderer/viewer handles it. With low memory usage.
See: http://mypage.bluewin.ch/huanderegg
Hansuli Anderegg
: JPS Renderer/Viewer
FOP Renderer/Viewer based on Java Printing System, Graphics2D
Project: JPS Renderer/Viewer
Author: J.U. Anderegg
E-Mail: [EMAIL PROTECTED]
The Java Printing System enables applications to:
Print Java 2D graphics, text and images.
Control document-composition functions
Bertrand Delacretaz wrote
The whole point of the StructureHandler interface is to be able to
reuse FOP's frontend for structure-based renderers.
The impact of StructureHandler on the standard FOP output formats
(PDF mostly) is minor, but it allows the FOP pipeline to branch
cleanly, after
Bertrand Delacretaz wrote:
...
How do you plan to handle RTF styles?
In jfor we defined an extension to XSL-FO (the jfor-style attribute)
to control RTF styles.
I think some form of extension is needed as (AFAIK) the concept of
styles does not exist in XSL-FO, as it is meant for printed
A FOP renderer cannot support fonts. Physical devices, output systems do
this. But a FOP renderer may allow to map fonts and translate Unicode
characters to bytes using codepages. The user has to take care that font
metrics and it's character sets are accurate enough for all target devices
and
The current FOP is not fit for i18n, directions, area orientations and does
not even support a dotted line. Renderes too. Design correct data objects in
the first place instead of fancy control mechanisms.
- what do pipelines look like?
- are there really pipelines or are partial document
Glen Mazza wrote:
FOP's goals should be (1) to be compliant/accurate with the spec
The Area Tree is an implementation specification: either the XSL editors
remove it from the specs or they specify it precisely as a portable,
device-independent print file format. I ran Chuck Paussa's FO schema
Peter B. West wrote:
You seem to be familiar with some of the
swing.javax.text classes.
Yes, as a user of these classes: no need to know internals.
Can you sketch the approach out in a bit more
detail? Have you looked at percentages?
See a description javax.swing.text: Interface
The Java Printing System enables applications to:
- Print Java 2D graphics, text and images.
- Control document-composition functions such as soft collating, reverse
order printing, and booklet printing.
- Invoke printer-specific functions such as duplex (two-sided) printing and
stapling.
-
Hi Keiron,
On Sun, 2002-12-22 at 02:18, Kevin O'Neill wrote:
Is the paged XML a new or existing format?
A new format for now at least.
It is possible there will be a w3c defined format.
Please give some pointer to w3c activities in this area. What is this thing
exactly supposed to do?
Whatever the motivation of Sun was, FOP has to be postitioned in the IT
world.
What runs in which environment? Which output types are supported?
- Adobe announced PDF support (in a Windows environment?)
- IBM announced AFP support in a Java environment
- Sun's XSL:FO supports PDF (in a UNIX or
Gorka Echevarría wrote:
Anybody knows how can I disable the save button on Acrobat Reader?
Ask this question in a PDF forum!
The next question will be: is FOP able to output PDF documents with the
required properties? I guess AcroScripts will do the job.
Hansuli Anderegg
For details see:
see http://mypage.bluewin.ch/huanderegg
Topics of general interest:
- use of Jeremias Maerki's extension sample: for PDF bookmarks, JavaScripts,
barcodes?
- Java Image I/O
- decoupling the renderer
Hansuli Anderegg
On Tue, 2002-11-12 at 12:00, Kevin O'Neill wrote:
I just added a Form XObject but it needs some work (eg. bounds).
How do you intend to pass xobject hits from the fo processor. I had
thought about a fop specific attribute that was a hint on block level
objects.
What does your xsl:fo
Considering PDF only, I see prefabricated image XObjects as a very powerful
feature.
Extracting image XObjects from PDF files and storing them for use by the
renderer brings two advantages:
a) saves CPU and memory at a maximum
b) the user controls image representation/handling in PDFs.
Writing
This is how it used to work:
o anywhere in FOP formatting
- load image, if same URL was not loaded before and find out the space
needed for the image.
- keep list of processed files.
o PDF Renderer:
- generate XObject, if XObject of same URL was not generated before. Delete
image buffer:
Hi Paul,
this is how Acrobat embeds files. Follow the indirect PDF object references:
5 0 obj
/Pages 2 0 R
/Type /Catalog
/Metadata 19 0 R
/Names 17 0 R --- add this entry
endobj
17 0 obj --- add this object
/EmbeddedFiles 18 0 R
endobj
18 0 obj --- add this object
/Names [ (?y M y D a t
Hi Paul,
Do you want to embed the XSL:FO input in the PDF document?
If this is so:
o embedding files in PDF is the thing to do, but quite a challenge to
build into the PDF renderer.
o out of pure curiosity: why?
Hansuli Anderegg
Why not a fast, flexible and reliable solution? 3 things are needed:
o Java routines to calculate barcode rectangles and label areas depending
from barcode type and its parameters. Possibly such routines are freely
available. Otherwise: give me the specs, I will write the code (the nowadays
from PDF Reference p.319
Standard Type 1 Fonts
The PostScript names of 14 Type 1 fonts, known as the standard fonts, are as
follows:
1 HelveticaSans-Serif
2 Helvetica?Bold
3 Helvetica?Oblique
4 Helvetica?BoldOblique
5 Times?Roman Serif
6 Times?Bold
7 Times?Italic
8
To attack the problem:
o split the job into 2 steps:
- XSL transformation writes XSL:FO to a file
- FOP formats the file
o use another renderer: text e.g.
o vary the input
- reduce the volume: when does it blow up?
- eliminate distinct elements
You will pretty
Rendering RTF from the FOP area tree will produce a document edited without
template (.dot).
RTF is a revisable format - not a formatted document format. XSL:FO is an
extensive formatting language without any kind document elements (like
Adobe's e-Book), macros or stylesheets in the original
Let's talk component software (or blame monolithic MicrosSoft)!
- Formatting has to be separated strictly from rendering
o A clean and stable interface has to be defined (why not by data
representations of powerful PDF?)
o The renderer has to control the processing sequence.
-
XREF
PDF objects have to be written PHYSICALLY in ascending sequence of the PDF
object ID's. This is a requirement of the present XREF handling. If tis
condition is fulfilled and PDF syntax is correct, there is most likely a
length in error.
Page viewport in PDF is the /Cropbox
Cropbox:
x =
Keiron wrote:
- added transparency for shapes and alpha mask for images
well, what has to be transparent? Background images or overlaying text?
- 82 pages: Transparency in PDF, Technical Note #5407, Adobe Developer
Technologies
- Outputs pdf objects immediately
Unortunately I have broken the
The good library is here: Java Advanced Imaging. In a few days I will have a
sample PDF renderer using it.
o BMP, GIF, TIF, JPG, FPX, PNM and SVG are processed.
o Immediate file operations: 1 image in memory at a time
o caching, reuse by PDF features
Hansuli Anderegg
Copy from Adobe Knowledge Base:
PDF File Prints Off-Center to HP 1120c, Epson Stylus 860, and Epson Stylus
656
Issue
When you print a PDF file from an Adobe Acrobat 4.0 or later product (such
as Acrobat or Acrobat Reader) to a Hewlett-Packard (HP) 1120c printer, an
Epson Stylus 860 printer, or
In order to learn the page geometry I built a trace into the PDFRenderer.
Then I found that SVG can be written easily at the trace points. An analysis
of the results follows.
Coordinates (o) received by the
Guten Tag,
schicken Sie mir die Input xsl:fo? Dann kann ich den Fall einmal anschauen.
Mit freundlichen Gruessen
Hansuli Anderegg
Tel. 01-381-0207
-
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For additional commands, email:
View the PDF document with a Browser, e.g Internet Explorer. Keep it open
during your test session and reload the file when a new document version is
written. There are no file locking/sharing problems, no need to change file
names. I suppose print fidelity is kept.
Hansuli Anderegg
Matthew Brook O'Donnell schrieb:
cause a 'fatal PDF error' in PitStop, even without the modification
of (_data.size() + 1) to _data.size() in the PDFStream class that Hansuli
proposed.
However, I haven't been able to produce PDF that pass with 0.20.3 (even
with
the proposed patch).
[..]
The coordinates x/y have to be defined: outer, inner, center of the border
line?
PDF renderer FOP-0.20.1
o draws a box with 4 filled rectangles - each border line is a filled
rectangle. The SVG trace below demonstrates this.
o 4 calls to method addFilledRect(int x, int y, int w, int h,
Inserting JPEG into a PDF file is a simple file copy - given the URI,
bits/pixel and color model. The latter are coded within JPEG files. PDF
stores the image once and allows multiple references to it. Is programmed
caching superior to the caching of the file system?
From PDF view, memory =
These notes apply to fo:external-graphic under FOP 0.20.1:
o FOP images are kept as XObjects until the end of job, because
- the image is written to the output file
- and the complete image object is added to the XObjects vector in order to
build the ressource dictionary at the
J. Pietschmann wrote:
fo:block are
Rectangular areas, perhaps indented and with border, padding
and other individual traits, nested into a rectangular area.
I understand setting traits, properties. How about page layout, setting
inline and baseline postitions? Does it imply a unconditional
From the external view block means a rectangle containing formatted text,
something like a paragraph.
o What do fo:blocks as children of fo:blocks: mean for the end user?
o What's teheffect of block's in combination with tag element TEXT like
leader, marker, inline, wrapper, basic-link?
o When
Tests with FOP 0.20.1 and PDF output:
o Cells
- Define a rectangle with geometric lines as sides: width = 0.
- Padding on the cell element offsets text within the cell rectangle.
- Border rectangles are centered over the sides of the cell rectangle.
Adjacent cells put
At least 2 aspects are to be considered: document design/generation and
operation
o SVG
- document design: do you have a tool?
- operation: uses Batik starts new processes and generates images
o xsl:fo table with borders, backgrounds
- document design: type xsl:fo on
By writing renderer code with FOP 0.20.1 I observed :
A basic link
fo:basic-link internal-destination=dest0link wordst/fo:basic-link
arrives 3 times in the PDFrenderer asynchronously, without any connection
between each other.
1. as word link
2. as word words
3. as annotation rectangle
This
Questions:
o A basic-link in PDF means an annotation - an annotation defines a
rectangle. What's the effect, if the annotation text breaks to a new line?
If the basic-link contains more blocks and children?
o Middle Easterner write left-to-right, top-to-bottom. Far Easterners write
from
Specification Request
I programmed multilevel outlines, form fields, Javascripts with the PDF
classes of Fop-0.20.1. These experiments, attacking from the back end, lead
to these conclusions:
1. PDF Extensions can be added to the PDF classes on a clean way. The trick
is when/where to insert
By looking at PDF I think a link has to be coded like this (copy in the
samples):
fo:basic-link
external-destination=destinationlink_rectangle/fo:basic-link
o destination: an URI, where it makes a difference if there is an
extension .pdf or not
o link_rectangle: the rectangle on the page to
Attached I send a small demo document generated by an adapted FOP system. If
attachements do not work in the forum, send me a request by e-mail.
If there is interest I will compile the inputs, some comments and a list of
related documents. PDF JavaScript and Form Fields cover a broad range of
Forms and JavaScript in PDF may be about as complex as xsl:fo. To get a
feeling for the learning, design and development effort see:
Acrobat JavaScript Object Specification, Version 5.0.5, Technical Note #
5186
Chapter Quick Reference Forms: 20 pages illustrated with Acrobat menues
Keyword
Hi Keiron,
Let's fix a DESIGN GOAL. What can be realized in which time frame? I see 2
ways to go ahead:
1. Low level implementation using native PDF syntax: users have to learn PDF
syntax and to some extent PDF file structure. They can try experimentally
everything with the risk of invalid PDF
I programmed PDF form fields into Fop-0.20.1. PDF form fields have an
annotation representation in PDF files with the subtype widget. So I
patched the external-link within the renderer code to process form fields.
Additionally a PDF fields object had to be added to the PDF stream and a
reference
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