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Rotate PDF Page
https://forum.pdfsharp.net/viewtopic.php?f=2&t=594		 Page 1 of 1
Author:  Sai Alluru [ Fri Jan 02, 2009 12:18 pm ]
Post subject:  Rotate PDF Page
Hi,

I want to know how to rotate a pdf page say by 90, 180 and 270 degrees. I tried the following code but when I rotate and transform the resulting page is blank. If not rotated the page appears in the rectangle bounding box.

PdfDocument inputDocument = PdfReader.Open(filename, PdfDocumentOpenMode.Import);
PdfDocument outputDocument = new PdfDocument();
for (int idx = 0; idx < inputDocument.PageCount; idx++)
{
PdfPage page = inputDocument.Pages[idx];
PdfDocument singlePageDocument = new PdfDocument();
singlePageDocument.AddPage(page);
singlePageDocument.Save("C:\\NewTemp\\temp"+idx.ToString()+".pdf");
outputDocument.AddPage(new PdfPage());
page = outputDocument.Pages[idx];
page.Orientation = PdfSharp.PageOrientation.Landscape;
XGraphics gfx = XGraphics.FromPdfPage(page);
XPdfForm form = XPdfForm.FromFile("C:\\NewTemp\\temp"+idx.ToString()+".pdf");
gfx.RotateAtTransform(90, new XPoint(0, 0));
gfx.DrawImage(form,new XRect(140, 80, 50, 50 * Math.Sqrt(2)));
gfx.Save();
}
outputDocument.Save("C:\\NewTemp\\Rotated.pdf");

Let me know if there is a simple way to rotate a page.

Thanks,

Sai.
Author:  billy anachronism [ Thu Jan 08, 2009 3:50 am ]
Post subject: 
Hi Sai,

I just did:

PdfDocument inputDocument = PdfReader.Open(filename, PdfDocumentOpenMode.Import);

foreach (PdfPage page in inputDocument)
{
page.Rotate = 0;
page.Orientation = PdfSharp.PageOrientation.Portrait;
}

That worked for me. However, I'm also looking to resize the page and I haven't found an easy way to do that yet.
Author:  Thomas Hoevel [ Thu Jan 08, 2009 9:16 am ]
Post subject:  Re: Rotate PDF Page
Hi!
Sai Alluru wrote:
I tried the following code but when I rotate and transform the resulting page is blank.

The turning point is (0, 0) - I guess you rotate the whole content away from the visible part of the page (RotateAtTransform) or use co-ordinates outside the visible area (DrawImage).
Try using the center of the page as turning point for the rotation.

Have you checked the XForms sample?
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