http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 23:47:56 +0000 Tue, 30 Nov 2010 07:15:12 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=1659 http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7280.html#7280 Author: Vankir
Subject: 1659
Posted: 30 Nov 10 at 7:15AM

Hi,
Not sure if it will be helpful for you bit some PDF pages can be rotated and have Rotation attribute in PDF. In this case Adobe Acrobat shows them correctly (it applies rotation when render page as far as I understand). I use following code to Render such pages correctly.

long nDPI = _Module.GetDriverSettings()->GetPDFRenderResolution();
double dWidth = GetPDFLibrary()->DAGetPageWidth(m_nPDFFileRef, m_nPDFPageRef);
double dHeight = GetPDFLibrary()->DAGetPageHeight(m_nPDFFileRef, m_nPDFPageRef);
long nRotation = GetPDFLibrary()->DAPageRotation(m_nPDFFileRef, m_nPDFPageRef);

//change height and width if page is rotated
if(nRotation == 90 || nRotation == 270)
{
            double dTmp = dWidth;
            dWidth = dHeight;
            dHeight = dTmp;
 }
 //transform width and height to inches and after that to pixels
 dWidth = dWidth*nDPI/72;
 dHeight = dHeight*nDPI/72;

Best regards,
Kirill
]]> Tue, 30 Nov 2010 07:15:12 +0000 http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7280.html#7280 http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7275.html#7275 Author: Ingo
Subject: 1659
Posted: 29 Nov 10 at 11:28AM

Hi!

It's not a problem - If the author used landscape, he wants landscape?
Have a look in the online reference guide.
There are functions to set and get the document dimensions/-formats.
You'll have problems if there are large images.
From landscape to portrait you have to capture,...
making smaller,... try to fit it on portrait,...
not an easy job.

Cheers, Ingo
]]> Mon, 29 Nov 2010 11:28:07 +0000 http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7275.html#7275 http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7274.html#7274 Author: Giuseppe
Subject: 1659
Posted: 29 Nov 10 at 10:59AM

I've a pdf file, i want trasform landscape to portrait, can i recognize this problem?]]> Mon, 29 Nov 2010 10:59:01 +0000 http://www.quickpdf.org/forum/howto-transform-existing-pdf-landscape2portrait_topic1659_post7274.html#7274