* Trim blank space of a PDF page
@ 2018-05-22 13:25 Procházka Lukáš Ing.
2018-05-23 9:11 ` Henri Menke
0 siblings, 1 reply; 6+ messages in thread
From: Procházka Lukáš Ing. @ 2018-05-22 13:25 UTC (permalink / raw)
To: ConTeXt
Hello,
just curious - is threre a way how to crop a page of a PDF via ConTeXt?
Ideally - to process a single page PDF into another file, with the one page cropped...
Best regards,
Lukas
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* Re: Trim blank space of a PDF page
2018-05-22 13:25 Trim blank space of a PDF page Procházka Lukáš Ing.
@ 2018-05-23 9:11 ` Henri Menke
2018-05-23 9:25 ` Taco Hoekwater
0 siblings, 1 reply; 6+ messages in thread
From: Henri Menke @ 2018-05-23 9:11 UTC (permalink / raw)
To: ntg-context
On 05/23/2018 01:25 AM, Procházka Lukáš Ing. wrote:
> Hello,
>
> just curious - is threre a way how to crop a page of a PDF via ConTeXt?
>
> Ideally - to process a single page PDF into another file, with the one
> page cropped...
It's not really clear what you want. Are you looking for
\start...\stopTEXpage?
>
> Best regards,
>
> Lukas
>
>
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* Re: Trim blank space of a PDF page
2018-05-23 9:11 ` Henri Menke
@ 2018-05-23 9:25 ` Taco Hoekwater
2018-05-23 10:09 ` Hans Hagen
0 siblings, 1 reply; 6+ messages in thread
From: Taco Hoekwater @ 2018-05-23 9:25 UTC (permalink / raw)
To: mailing list for ConTeXt users
>
> On 05/23/2018 01:25 AM, Procházka Lukáš Ing. wrote:
>> Hello,
>>
>> just curious - is threre a way how to crop a page of a PDF via ConTeXt?
>>
>> Ideally - to process a single page PDF into another file, with the one
>> page cropped...
>
The ‘pdfcrop’ command from TeXLive can do that for you on the command line.
It is based around ghostscript which can automatically find the crop area,
then uses pdftex,luatex,or xetex to create a new pdf.
It is doable to come up with a solution in ConTeXt if you do not mind
specifying the cropbox manually, but automatic cropping is probably too
hard for ConTeXt itself (and likely would end up duplicating pdfcrop
to some extent).
Best wishes,
Taco
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* Re: Trim blank space of a PDF page
2018-05-23 9:25 ` Taco Hoekwater
@ 2018-05-23 10:09 ` Hans Hagen
2018-05-23 14:44 ` Alan Braslau
0 siblings, 1 reply; 6+ messages in thread
From: Hans Hagen @ 2018-05-23 10:09 UTC (permalink / raw)
To: mailing list for ConTeXt users
On 5/23/2018 11:25 AM, Taco Hoekwater wrote:
>
>>
>> On 05/23/2018 01:25 AM, Procházka Lukáš Ing. wrote:
>>> Hello,
>>>
>>> just curious - is threre a way how to crop a page of a PDF via ConTeXt?
>>>
>>> Ideally - to process a single page PDF into another file, with the one
>>> page cropped...
>>
>
> The ‘pdfcrop’ command from TeXLive can do that for you on the command line.
> It is based around ghostscript which can automatically find the crop area,
> then uses pdftex,luatex,or xetex to create a new pdf.
>
> It is doable to come up with a solution in ConTeXt if you do not mind
> specifying the cropbox manually, but automatic cropping is probably too
> hard for ConTeXt itself (and likely would end up duplicating pdfcrop
> to some extent).
there is a script
pdftrimwhite.pl
in the distribution
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
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* Re: Trim blank space of a PDF page
2018-05-23 10:09 ` Hans Hagen
@ 2018-05-23 14:44 ` Alan Braslau
2018-05-23 15:10 ` Taco Hoekwater
0 siblings, 1 reply; 6+ messages in thread
From: Alan Braslau @ 2018-05-23 14:44 UTC (permalink / raw)
To: Hans Hagen; +Cc: mailing list for ConTeXt users
Do these tools work vectorally, that is identify the drawing extent
and adjust the boundingbox appropriately, or do they (especially gs)
convert to an image and then crop?
I use MP to read the pdf and then crop, but to a fixed closed path.
The problem here appears to seek an autocrop.
Alan
On Wed, 23 May 2018 12:09:29 +0200
Hans Hagen <j.hagen@xs4all.nl> wrote:
> On 5/23/2018 11:25 AM, Taco Hoekwater wrote:
> >
> >>
> >> On 05/23/2018 01:25 AM, Procházka Lukáš Ing. wrote:
> >>> Hello,
> >>>
> >>> just curious - is threre a way how to crop a page of a PDF via
> >>> ConTeXt?
> >>>
> >>> Ideally - to process a single page PDF into another file, with
> >>> the one page cropped...
> >>
> >
> > The ‘pdfcrop’ command from TeXLive can do that for you on the
> > command line. It is based around ghostscript which can
> > automatically find the crop area, then uses pdftex,luatex,or xetex
> > to create a new pdf.
> >
> > It is doable to come up with a solution in ConTeXt if you do not
> > mind specifying the cropbox manually, but automatic cropping is
> > probably too hard for ConTeXt itself (and likely would end up
> > duplicating pdfcrop to some extent).
> there is a script
>
> pdftrimwhite.pl
>
> in the distribution
>
> Hans
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an
> entry to the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context webpage :
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> http://contextgarden.net
> ___________________________________________________________________________________
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* Re: Trim blank space of a PDF page
2018-05-23 14:44 ` Alan Braslau
@ 2018-05-23 15:10 ` Taco Hoekwater
0 siblings, 0 replies; 6+ messages in thread
From: Taco Hoekwater @ 2018-05-23 15:10 UTC (permalink / raw)
To: mailing list for ConTeXt users
> On 23 May 2018, at 16:44, Alan Braslau <braslau.list@comcast.net> wrote:
>
> Do these tools work vectorally, that is identify the drawing extent
> and adjust the boundingbox appropriately, or do they (especially gs)
> convert to an image and then crop?
in pdfcrop, gs computes a boundingbox based on (one assumes) its
internal image representation. Then it creates a /CropBox that is
then read by the pdfcrop perl script to create occlusion margins
for an external image include in a plain tex document.
I assume pdftrimwhite does the same.
That was what you wanted to know, right? Not the nitty gritty of
gs’ internal calculations?
Taco
>
> I use MP to read the pdf and then crop, but to a fixed closed path.
> The problem here appears to seek an autocrop.
>
> Alan
>
> On Wed, 23 May 2018 12:09:29 +0200
> Hans Hagen <j.hagen@xs4all.nl> wrote:
>
>> On 5/23/2018 11:25 AM, Taco Hoekwater wrote:
>>>
>>>>
>>>> On 05/23/2018 01:25 AM, Procházka Lukáš Ing. wrote:
>>>>> Hello,
>>>>>
>>>>> just curious - is threre a way how to crop a page of a PDF via
>>>>> ConTeXt?
>>>>>
>>>>> Ideally - to process a single page PDF into another file, with
>>>>> the one page cropped...
>>>>
>>>
>>> The ‘pdfcrop’ command from TeXLive can do that for you on the
>>> command line. It is based around ghostscript which can
>>> automatically find the crop area, then uses pdftex,luatex,or xetex
>>> to create a new pdf.
>>>
>>> It is doable to come up with a solution in ConTeXt if you do not
>>> mind specifying the cropbox manually, but automatic cropping is
>>> probably too hard for ConTeXt itself (and likely would end up
>>> duplicating pdfcrop to some extent).
>> there is a script
>>
>> pdftrimwhite.pl
>>
>> in the distribution
>>
>> Hans
>>
>> -----------------------------------------------------------------
>> Hans Hagen | PRAGMA ADE
>> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>> tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
>> -----------------------------------------------------------------
>> ___________________________________________________________________________________
>> If your question is of interest to others as well, please add an
>> entry to the Wiki!
>>
>> maillist : ntg-context@ntg.nl /
>> http://www.ntg.nl/mailman/listinfo/ntg-context webpage :
>> http://www.pragma-ade.nl / http://context.aanhet.net archive :
>> https://bitbucket.org/phg/context-mirror/commits/ wiki :
>> http://contextgarden.net
>> ___________________________________________________________________________________
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://context.aanhet.net
> archive : https://bitbucket.org/phg/context-mirror/commits/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
Taco Hoekwater
Elvenkind BV
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2018-05-22 13:25 Trim blank space of a PDF page Procházka Lukáš Ing.
2018-05-23 9:11 ` Henri Menke
2018-05-23 9:25 ` Taco Hoekwater
2018-05-23 10:09 ` Hans Hagen
2018-05-23 14:44 ` Alan Braslau
2018-05-23 15:10 ` Taco Hoekwater
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