Just add a SetCropBox() method to the API – it’s a single line call (just
setting the value of a key in a dictionary).
Leonard
From: tomasz.kota...@gmail.com [mailto:tomasz.kota...@gmail.com] On Behalf Of
Tomasz J. Kotarba
Sent: Thursday, February 17, 2011 2:51 PM
To: Leonard Rosenthol
Cc: podofo-us...@lists.sf.net
Subject: Re: [Podofo-users] It is possible to crop a page
Leonard,
Thanks for such a quick answer. What is the preferred way of setting the
CropBox of the page? I could not find a setter method - only a getter
PdfPage::GetCropBox(). Incidentally, I also found PdfPage::GetTrimBox() and
PdfPage::GetMediaBox(). The former mentions the "cut area" while the latter
claims to deal with the physical page size. Could I achieve the cropping
effect (and get rid of all the unnecessary (i.e. invisible) stuff) by just by
changing the physical page size? Or perhaps first changing the CropBox and
then the MediaBox? And what can the cut area in GetTrimBox() be used for?
Cheers,
T
On 17 February 2011 21:56, Leonard Rosenthol
<lrose...@adobe.com<mailto:lrose...@adobe.com>> wrote:
Simply changing the visible area of the page is trivial to do with PoDoFo –
just set the CropBox of the page. However, that won’t remove anything
physically from the file, it will simply hide it from the user.
To actually remove content is possible with PoDoFo, but will require very low
level APIs and a DEEP understanding of PDF. Also, while it would work, it
would NOT meet your requirement to “leave an EXACT COPY of the objects”.
Certainly, the visible appearance would remain, but the objects that put that
on the page wouldn’t necessary be exact copies. (I am splitting hairs at
technical level….)
Leonard
From: tomasz.kota...@gmail.com<mailto:tomasz.kota...@gmail.com>
[mailto:tomasz.kota...@gmail.com<mailto:tomasz.kota...@gmail.com>] On Behalf Of
Tomasz J. Kotarba
Sent: Thursday, February 17, 2011 8:05 AM
To: Leonard Rosenthol
Cc: podofo-us...@lists.sf.net<mailto:podofo-us...@lists.sf.net>
Subject: Re: [Podofo-users] It is possible to crop a page
Hi Leonard,
Thanks for your trying to help. To answer your question - if no part of any of
the images has been selected (i.e. as you say - only the text) then, ideally, I
would like them not to be present in the excerpt like in this example from some
random web page: http://www.mediacollege.com/adobe/photoshop/tool/crop.html
(unfortunately it only shows an image, not a document with both text and
figures). Why do you ask? Does it mean that it is not possible to copy a
rectangular region of a page and save it as a new PDF with PoDoFo but there is
a function which can hide everything apart from the selected region? If so,
then would it left blank empty space around the region or would the new page be
scaled down?
Cheers,
T
On 17 February 2011 14:26, Leonard Rosenthol
<lrose...@adobe.com<mailto:lrose...@adobe.com>> wrote:
Before I answer, can you clarify something?
Let say that you have a page with 2 images and some text. If I select only the
text, then when writing out the new PDF, would you expect that the images
wouldn’t be present and taking up space? OR do you simply want them not to
render/draw?
Leonard
From: Tomasz J. Kotarba [mailto:tom...@kotarba.net<mailto:tom...@kotarba.net>]
Sent: Wednesday, February 16, 2011 2:47 PM
To: podofo-us...@lists.sf.net<mailto:podofo-us...@lists.sf.net>
Subject: [Podofo-users] It is possible to crop a page
Hi,
I was wondering if PoDoFo can be used to select a rectangular area of a page
and save it as a separate PDF document representing an exact copy of the
selected page region? An exact copy is not just a string of characters or a
bitmap (many libraries can do that) - it has to maintain all the information
present in the original (i.e. it should both be the exact copy of the internal
PDF tree-like structure of objects (which would allow for further processing
with PoDoFo or other PDF processing tools ) and look identical to the original
when viewed in a PDF viewer). Is there a function which does this?
Cheers,
T
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