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Date: Tue, 3 Mar 2015 16:29:57 -0500
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Subject: Re: PDFBox 2.0
From: Eric Douglas <edouglas@blockhouse.com>
To: users@pdfbox.apache.org
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I see...that's one hack...instead of serializing the original PDF, create a
new empty PDF, add the PDPage for that page, and convert that back to a
byte[] array.
That should work, should take slightly more processing on the server side
to create the page objects, should use less memory than putting the
original PDF into each page object and should serialize faster.
Thanks.

On Tue, Mar 3, 2015 at 4:16 PM, Tilman Hausherr <THausherr@t-online.de>
wrote:

> You can't serialze PDPage objects directly. What you can do is to create a
> new PDF from it and save that one as a file or as a stream.
>
> Tilman
>
> Am 03.03.2015 um 14:22 schrieb Eric Douglas:
>
>  I'm not sure what you mean "you can't cut a PDF".  There is already a
>> PDFRenderer which accepts a PDDocument in it's constructor and has a
>> renderPageToGraphics method which draws a single page.  The
>> renderPageToGraphics method accepts a page number which just gets the
>> PDPage object for that page number from that PDDocument object.  It
>> doesn't
>> appear to reference the PDDocument in that method aside from getting the
>> PDPage object.  The PDPage is already independent.  I can create a new
>> document and pass it in to addPage().
>>
>> I have an application that runs on a server which creates report page
>> objects.  Each page is serializable and can be pulled down to the client
>> for a print preview.  I'm using pdfbox on the server to read an existing
>> PDF.  I want to mix the pages of that PDF in with my report.  I'd prefer
>> not to wait for it to serialize the entire document to the client before
>> they can preview one page.  The original document object is irrelevant.
>> The client will also have the option to print to the printer, which takes
>> all the page objects and creates one Pageable object to print as a Book
>> (which can be to a printer installed on the server or the client), or they
>> can create a PDF.  I'm currently drawing the pages
>> to com.itextpdf.awt.PdfGraphics2D to create the PDF.  I tried using FOP
>> and
>> it didn't recognize fonts correctly.
>>
>> PDFRenderer.renderPageToGraphics looks great, now I just want to separate
>> the page from the document and be able to serialize it.  Otherwise I have
>> to go through this whole mess where my application has an array of pages
>> and if they want to grab one page to view it I have to know if it came
>> from
>> a PDDocument, serialize the original PDF file, and recreate the whole
>> document to show that one page.
>>
>> On Mon, Mar 2, 2015 at 5:29 PM, Tilman Hausherr <THausherr@t-online.de>
>> wrote:
>>
>>  Am 02.03.2015 um 22:49 schrieb Eric Douglas:
>>>
>>>  Hi, I hope this is to the right place, my first time using this list.
>>>> I'm working with a 2.0 maven trunk I found and I have a couple issues.
>>>> I can't seem to find this class which is in some online javadocs
>>>> referencing pdfbox 1.8:
>>>>
>>>>      - org.apache.pdfbox.pdfviewer.PDFPagePanel
>>>>
>>>>  org.apache.pdfbox.tools.gui.PDFPagePanel
>>>
>>>
>>>  Now, I'm trying to use pdfbox on a server to get pdf pages, then
>>>> serialize
>>>> one page at a time to render on a client.  What's the best way to do
>>>> this?
>>>>
>>>>  none at all. You can't cut a PDF like a salami. There is the PDFSplit
>>> application, but the size of all pages will be larger than the size of
>>> the
>>> original PDF, because of common objects.
>>>
>>> Tilman
>>>
>>>   I'm trying to avoid serializing the entire document since the load
>>> time is
>>>
>>>> much faster doing single pages, but PDPage is not serializable.
>>>>    org.apache.pdfbox.rendering.PDFRenderer accepts the document on the
>>>> constructor but doesn't seem to need it to render a single page, other
>>>> than
>>>> to get the page from it in renderPageToGraphics which could easily add
>>>> an
>>>> overload to just accept the PDPage object.
>>>>
>>>>
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>>>
>
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