Apache FOP: Trimbox, Bleedbox, Crop marks

[Oliver Hirschi-2]

Hi there

Is there a way to define the trimbox, the bleedbox and maybe also corp
marks by generating a pdf over xsl:fo using apache fop 0.94?

I saw there is a way to do it with e.g. AntennaHouse, isn't it?
So, do I have to change to AntennaHouse, or is there also a way to do
it with apache fop?

Great thanks & Kind regards,
Oliver Hirschi



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[Jeremias Maerki-2]

It's not available in FOP, yet. I have once started support for the bleed
box (as an experiment) but since this is very low priority for me I
haven't finished, yet. If you have some Java knowledge it would be an
ideal opportunity to contribute something back to FOP. I can give
hints and pointers into the code to get you started.

On 02.04.2008 10:34:36 Oliver Hirschi wrote:

> Hi there
>
> Is there a way to define the trimbox, the bleedbox and maybe also corp
> marks by generating a pdf over xsl:fo using apache fop 0.94?
>
> I saw there is a way to do it with e.g. AntennaHouse, isn't it?
> So, do I have to change to AntennaHouse, or is there also a way to do
> it with apache fop?
>
> Great thanks & Kind regards,
> Oliver Hirschi

Jeremias Maerki


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[Oliver Hirschi-2]

Thanks for your answer at first

What do you think, how much effort (in man-day) is used for initial
skill adaptation training in fop-code and writing the expansion for
supporting trim-, bleed-box and crop-marks?

by-the-way: Ech glaub eigentlech chönntemer üs im lozärner dialäkt
onderhalte...http://www.FamilyHirschi.ch :-)

Gruss, Oliver Hirschi

> "Jeremias Maerki" <dev@...> schrieb im Newsbeitrag >
> news:20080402104956.2BAE.DEV@......
> It's not available in FOP, yet. I have once started support for the
> bleed
> box (as an experiment) but since this is very low priority for me I
> haven't finished, yet. If you have some Java knowledge it would be an
> ideal opportunity to contribute something back to FOP. I can give
> hints and pointers into the code to get you started.
>
> On 02.04.2008 10:34:36 Oliver Hirschi wrote:
> > Hi there
> >
> > Is there a way to define the trimbox, the bleedbox and maybe also
> > corp
> > marks by generating a pdf over xsl:fo using apache fop 0.94?
> >
> > I saw there is a way to do it with e.g. AntennaHouse, isn't it?
> > So, do I have to change to AntennaHouse, or is there also a way to
> > do
> > it with apache fop?
> >
> > Great thanks & Kind regards,
> > Oliver Hirschi
>
>
> Jeremias Maerki

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[Jeremias Maerki-2]

On 07.04.2008 07:55:42 Oliver Hirschi wrote:
> Thanks for your answer at first
>
> What do you think, how much effort (in man-day) is used for initial
> skill adaptation training in fop-code and writing the expansion for
> supporting trim-, bleed-box and crop-marks?

It depends how these elaborate those crop-marks should be. The necessary
extension code is easy. The painting of the crop-marks should probably
be as renderer-independent as possible (so it can be reused by other
renderers). So it should probably be implemented using Java2D/Graphics2D
(see AbstractRenderer.getGraphics2DAdapter()). But that shouldn't take
too long, either. I guess with all testing and some documentation, not
more than 2 or 3 days. As already mentioned I have the beginnings of a
patch for bleed box which could serve as a starting point. Unfortunately,
I don't have it with me here in Amsterdam this week.

> by-the-way: Ech glaub eigentlech chönntemer üs im lozärner dialäkt
> onderhalte...http://www.FamilyHirschi.ch :-)

Stemmt, aber d'Lüüt do händ ned so Fröid, wenn's müend Schwiizerdüütsch
läse.

(For non-Swiss: the above is Swiss German which is normally not written
down, just spoken. You haven't missed any important content. hehe.)

> Gruss, Oliver Hirschi
>
> > "Jeremias Maerki" <dev@...> schrieb im Newsbeitrag >
> > news:20080402104956.2BAE.DEV@......
> > It's not available in FOP, yet. I have once started support for the
> > bleed
> > box (as an experiment) but since this is very low priority for me I
> > haven't finished, yet. If you have some Java knowledge it would be an
> > ideal opportunity to contribute something back to FOP. I can give
> > hints and pointers into the code to get you started.
> >
> > On 02.04.2008 10:34:36 Oliver Hirschi wrote:
> > > Hi there
> > >
> > > Is there a way to define the trimbox, the bleedbox and maybe also
> > > corp
> > > marks by generating a pdf over xsl:fo using apache fop 0.94?
> > >
> > > I saw there is a way to do it with e.g. AntennaHouse, isn't it?
> > > So, do I have to change to AntennaHouse, or is there also a way to
> > > do
> > > it with apache fop?
> > >
> > > Great thanks & Kind regards,
> > > Oliver Hirschi
> >
> >
> > Jeremias Maerki
>
>
>

Jeremias Maerki


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[Oliver Hirschi-2]

"Jeremias Maerki" <dev@...> schrieb im Newsbeitrag
news:20080407151621.2993.60BA733C@......

> On 07.04.2008 07:55:42 Oliver Hirschi wrote:
> > Thanks for your answer at first
> >
> > What do you think, how much effort (in man-day) is used for initial
> > skill adaptation training in fop-code and writing the expansion for
> > supporting trim-, bleed-box and crop-marks?
>
> It depends how these elaborate those crop-marks should be. The
> necessary
> extension code is easy. The painting of the crop-marks should
> probably
> be as renderer-independent as possible (so it can be reused by other
> renderers). So it should probably be implemented using
> Java2D/Graphics2D
> (see AbstractRenderer.getGraphics2DAdapter()). But that shouldn't
> take
> too long, either. I guess with all testing and some documentation,
> not
> more than 2 or 3 days. As already mentioned I have the beginnings of
> a
> patch for bleed box which could serve as a starting point.
> Unfortunately,
> I don't have it with me here in Amsterdam this week.
>

I talked here in our team about the implementation of the trimbox an
crop-marks functionality in FOP. I think I can and will make the needed
implementation for that in the future. Directly now, I have not the
time to do that, so I will contact you (Jeremias) as soon as I have
time to do it. Then we can talk about, if we have to meet us for the
first hints and pointers you can give it to me.

@Jeremias: Did you see my posting "Apache FOP: Different Problems with
embedding PDFs" from 10.04.2008? Point 5 is solved with installing "JAI
Image I/O Tools", but the other??? Mainly the first point - Is it a
known bug, or did I make a mistake?

I wish to all of you a beautiful start of the week...

Thanks & regards,
Oliver Hirschi



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[doballve]

I was looking for PDF TrimBox and FOP and found your thread. Excellent to see this is getting implemented. What's the schedule for this feature? Any progress so far?

BTW, I have patched the old 0.20.5 to support PDF TrimBox like this:
    - accept "-trimboxPadding=##mm" param from command line
    - check for "trimboxPadding" in Configuration
    - generate TrimBox per page: [ (tp) (tp) (width - tp), (height - tp) ]

Very crudely, this is the important part in PDFPage.toPDF(), after "/MediaBox":
        //DA Custom: TrimBox
        try {
            String trimboxPaddingSt = Configuration.getStringValue("trimboxPadding", Configuration.PDF);
            if (trimboxPaddingSt != null && !"".equals(trimboxPaddingSt)) {
                if (trimboxPaddingSt.endsWith("mm")) {
                    float trimboxPaddingFloat = Float.parseFloat(trimboxPaddingSt.substring(0, trimboxPaddingSt.length() - 2));
                    long trimboxPadding = Math.round(trimboxPaddingFloat * 2.83464567);
                    sb.append("/TrimBox [ " + trimboxPadding + " " + trimboxPadding + " " + (this.pagewidth - trimboxPadding) + " " + (this.pageheight - trimboxPadding) + " ]\n");
                } else {
                    throw new Exception("Invalid trimboxPadding. Value must be given in mm (##.##mm)");
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

for the crop marks, I'm drawing them as borders to fo:block-container with            position="absolute", so handling it in the XSL level, before FOP. It works, but I had to play around with all page sizes and margins...