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Topic: Re: Clipping a page
Conf: (P-PDF) Developers, Msg: 56662
From: LeonardR
Date: 5/29/2002 05:20 PM

At 8:43 AM -0500 2/7/01, p-pdf-developer Listmanager wrote:
>Could some one let me now the best way
>to achecive the folowing steps by giving
>sample code or Acrobat SDK APIS
>to be used.

I am guessing the reason that no one is giving this to you on
a silver platter is that many of us have written this code as part of
commercial products, and it's pretty well integrated into those.
Also, you REALLY DO need to read the Acrobat SDK documentation AS
WELL AS the PDF specification if you are going to work with PDF files
- there isn't any getting around that no matter how much sample code
you get.

I'll break down each of the below a bit more for you so that
you should be able to find the API's call you'll need - BUT you will
STILL need to read the docs!

>step 1.Combine all content streams
>from the source page into a
>single content stream

Open the documents, acquire the source and destination pages,
create a new stream in the destination document, get the list of the
content from the source document, for each item in the content list,
copy the bytes.

>step 2. Write that stream out as a
>form XObject into the new

Create a new Cos object from the stream and add the
appropriate dictionary entries.

>step 3. Copy the resources dict from
>the source page to the XObject

Get the Cos object from the source and then write it to the

>step 4. Loop through all pages of
>the destination document,
>adding a new content stream that renders
>the XObject.
Count the number of pages in the destination, for each one
create a content stream that renders the XObject ("Do" operator).

Leonard Rosenthol
Sr. Software Engineer (215) 922-3509 (voice)
Digital Applications (215) 440-0504 (fax)

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