Debenu Quick PDF Library - PDF SDK Community Forum : CopyPageRanges very slowly!

CopyPageRanges very slowly! : Hi,working with capture is only...

Thu, 16 Feb 2012 21:16:53 +0000

Author: edvoigt
Subject: 2148
Posted: 16 Feb 12 at 9:16PM

Hi,

working with capture is only possible in one document, so you need merge in any form before.

As Ingo said, explain please more accurate what you want. I assume you want to build a new PDF and your source is another (bigger) PDF from which you need only a few pages?

Remember about the difference between your PDF on disk and the document in QP, which is a construct in memory. First you should use the "normal" way loadfromfile without going a way over a string. This string needs memory, QP->document needs memory. So you help QP to be slow.

If you have one PDF from which you need some pages, so the easiest way is to take it and delte the unneeded pages. So you have only one document in memory. After deleting process it is to save and you are ready.

If the PDF is very big, it may be better to use DA..., but try first easy

QP.Loadfromfile('name.pdf', '');
QP.DeletePage(12, 6); // example: without 12,13,..17
QP.SaveToFile('name_new.pdf');

to get a feeling for the possibilities of QP. More as this kernel operations is not needed.

Werner

CopyPageRanges very slowly! : I've seen copy and then delete...

Thu, 16 Feb 2012 19:50:09 +0000

Author: Ingo
Subject: 2148
Posted: 16 Feb 12 at 7:50PM

I've seen copy and then delete - so i thought it was better to capture ;-)

CopyPageRanges very slowly! : But I need copy pages from one...

Thu, 16 Feb 2012 19:06:26 +0000

Author: AlexCasual
Subject: 2148
Posted: 16 Feb 12 at 7:06PM

But I need copy pages from one document to another,can I use capture functions in this case?

CopyPageRanges very slowly! : Capture functions will be working...

Thu, 16 Feb 2012 18:56:48 +0000

Author: AlexCasual
Subject: 2148
Posted: 16 Feb 12 at 6:56PM

Capture functions will be working better?

CopyPageRanges very slowly! : Hi!At other parts you can save...

Wed, 15 Feb 2012 19:20:19 +0000

Author: Ingo
Subject: 2148
Posted: 15 Feb 12 at 7:20PM

Hi!

At other parts you can save time.
First you load into string and then the string into QP.
At least you save to string and then from string via QP to file.
Why?
In your case i would remove the load/save to string?
If you want to copy pages from one document to the other
and want to delete them later in the original document
you should better use the capture functions (so one step less ;-).
To save further performance you can use the DA-functionalities.

Cheers, Ingo

Edited by Ingo - 15 Feb 12 at 7:27PM

CopyPageRanges very slowly! : Part of C++ code :..........int...

Tue, 14 Feb 2012 14:53:57 +0000

Author: AlexCasual
Subject: 2148
Posted: 14 Feb 12 at 2:53PM

Part of C++ code :

..........

int pdf_id = m_QP->NewDocument();

for (SIZE_T i = 0; i < this->count_; ++i)

{

m_QP->SetOrigin(1);

std::string pdf_source;

this->GetDataPdf(i,pdf_source); // <- Read pdf files from disk

load_result = m_QP->LoadFromString(pdf_source,L"");

int curr_id = m_QP->SelectedDocument();

m_QP->SelectDocument(pdf_id);

m_QP->CopyPageRanges(curr_id,L"1"); // <- VERY SLOWLY!!!

m_QP->RemoveDocument(curr_id);

}

std::string pdf_source;

try

{

m_QP->DeletePages(1,1);

pdf_source = m_QP->SaveToString();

m_QP->SaveToFile(L"c:\\Z.pdf");

m_QP->RemoveDocument(pdf_id);

}

catch(...){}

CopyPageRanges very slowly! : Hi Alex! This could depend...

Tue, 14 Feb 2012 09:37:02 +0000

Author: Ingo
Subject: 2148
Posted: 14 Feb 12 at 9:37AM

Hi Alex!

This could depend on the type of your pdfs (where's a sample?).

Perhaps it have to do with your code (where's a sample?).

You should deliver more infos if you need help.

And don't forget: It's a user-user-forum here - not the official support pages ;-)

Cheers, Ingo

Edited by Ingo - 14 Feb 12 at 9:37AM

CopyPageRanges very slowly! : I want to create multipage pdf...

Tue, 14 Feb 2012 08:12:26 +0000

Author: AlexCasual
Subject: 2148
Posted: 14 Feb 12 at 8:12AM

I want to create multipage pdf with function LoadFromString()...And if I use CopyPageRanges() from document created by LoadFromString() to my multipage document it's VERY slowly!

Please help!