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Rasterize on Trimbox OR Cropbox with GhostScript
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Stefano  
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 More options Feb 1, 4:16 am
Newsgroups: comp.text.pdf
From: Stefano <cappello.stef...@gmail.com>
Date: Wed, 1 Feb 2012 01:16:33 -0800 (PST)
Local: Wed, Feb 1 2012 4:16 am
Subject: Rasterize on Trimbox OR Cropbox with GhostScript
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Hi,

Is possible to define an alternative area to rasterize PDF?
Example: All PDF must have a TrimBox but in case the PDF don't have
this area I would like that GhostScript use as "alternative area" the
Cropbox.

Stefano


 
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ken  
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 More options Feb 1, 11:51 am
Newsgroups: comp.text.pdf
From: ken <k...@spamcop.net>
Date: Wed, 1 Feb 2012 16:51:38 -0000
Local: Wed, Feb 1 2012 11:51 am
Subject: Re: Rasterize on Trimbox OR Cropbox with GhostScript
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In article <c7f88c01-b380-4080-a9d3-bdac97f61781
@w4g2000vbc.googlegroups.com>, cappello.stef...@gmail.com says...

> Is possible to define an alternative area to rasterize PDF?
> Example: All PDF must have a TrimBox but in case the PDF don't have
> this area I would like that GhostScript use as "alternative area" the
> Cropbox.

-dUseCropBox

See /ghostpdl/gs/doc/Use.htm#PDF_switches

                Ken


 
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Stefano  
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 More options Feb 2, 4:11 am
Newsgroups: comp.text.pdf
From: Stefano <cappello.stef...@gmail.com>
Date: Thu, 2 Feb 2012 01:11:15 -0800 (PST)
Local: Thurs, Feb 2 2012 4:11 am
Subject: Re: Rasterize on Trimbox OR Cropbox with GhostScript
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On 1 Feb, 17:51, ken <k...@spamcop.net> wrote:

> In article <c7f88c01-b380-4080-a9d3-bdac97f61781
> @w4g2000vbc.googlegroups.com>, cappello.stef...@gmail.com says...

> > Is possible to define an alternative area to rasterize PDF?
> > Example: All PDF must have a TrimBox but in case the PDF don't have
> > this area I would like that GhostScript use as "alternative area" the
> > Cropbox.

> -dUseCropBox

> See /ghostpdl/gs/doc/Use.htm#PDF_switches

>                 Ken

Hi Ken,

thanks for reply but what I mean is to instruct GS to get trim box
area and only if trim box area is not defined use crop area as are for
rasterize the PDF.
Rasterization priority is to TrimBox. If this is missing use CropBox.
Any suggestion?

Stefano


 
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SaGS  
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 More options Feb 2, 5:00 am
Newsgroups: comp.text.pdf
From: SaGS <sags5...@gmail.com>
Date: Thu, 2 Feb 2012 02:00:18 -0800 (PST)
Local: Thurs, Feb 2 2012 5:00 am
Subject: Re: Rasterize on Trimbox OR Cropbox with GhostScript
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On Feb 2, 11:11 am, Stefano <cappello.stef...@gmail.com> wrote:

> ...
> what I mean is to instruct GS to get trim box area and only if trim
> box area is not defined use crop area as are for rasterize the PDF.
> ...

My reading of Ghostscript's Resource/Init/pdf_main.ps procedure
get_any_box is that if you specify both -dUseTrimBox and -dUseCropBox
on the command line, then GS will use the TrimBox if it exists, else
will use the CropBox. If none of the two are present, it will default
to the MediaBox.

I haven't tested it right now, and maybe more important the above
precedence is not explicitly stated so it may change in the future. If
that happens, at least now you know where to patch the code to get the
behavior you want :)


 
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