PDFsharp & MigraDoc Foundation

I don't know if the problem is the source pdf generator, but all the pair numbered pages became diferent from original, when using the DrawImage method from the class XGraphics.

The problem is the page image gets shifted to the left and bottom.

In attachment goes the test source code and document.

It happens with PDFSharp version 1.32 and the latest one.

Best regards

Hi!

I think it is a bug in PDFsharp.

The first page is not rotated and it is handled correctly.

The second page was rotated by 180°. The code that draws it handles the rotation somewhat incorrectly.

Is the PDF file coming from a duplex scanner?
Different scanner settings could be a workaround.
The PDF is a bit unusual, but still it should be handled correctly.

_________________
Regards
Thomas Hoevel
PDFsharp Team

Hi.

Yes, it cames from a duplex scanner.

I asked the user to try different settings.

Best regards.

If you are using the source code version of PDFsharp, here is a change I tried successfully with your PDF file:

In file "PdfFormXObject.cs" go to the method "internal PdfFormXObject(PdfDocument thisDocument, PdfImportedObjectTable importedObjectTable, XPdfForm form)"
and look for the comment "// Translate the image such that its center lies on the center of the rotated bounding box".
I added an "if" around six lines of code:
This change was not yet approved by the PDFsharp master programmer.

Original source code (without this fix) can be found here:
http://pdfsharp.codeplex.com/releases/view/618773

_________________
Regards
Thomas Hoevel
PDFsharp Team

Hi.

Thanks for you help, I made the changes and worked as you said.

If for some reason the proposed solution gets changed, I would like to know, so i can make the appropriate source changes.

Best regards.