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Possible bug in PdfPage's WriteObject() Method
https://forum.pdfsharp.net/viewtopic.php?f=2&t=2160		 Page 1 of 1
Author:  PandaKiwi [ Fri Oct 05, 2012 1:59 am ]
Post subject:  Possible bug in PdfPage's WriteObject() Method
Hi,

I have discovered the following code in PdfPage.WriteObject(PdfWriter writer):

Code:
      // HACK: temporarily flip media box if Landscape
      PdfRectangle mediaBox = MediaBox;
      // TODO: Take /Rotate into account
      if (orientation == PageOrientation.Landscape)
        MediaBox = new PdfRectangle(mediaBox.X1, mediaBox.Y1, mediaBox.Y2, mediaBox.X2);


This causes a bug in our application when the input PDF contains:

Code:
/Type /Page
/Rotate 90
/MediaBox [ 0 0 595 842 ]
/CropBox [ 0 0 595 842 ]
 


but outputs as:
Code:
  /CropBox [0 0 595 842]
  /MediaBox [0 0 842 595]
  /Rotate 90
  /Type /Page


effectively cropping the page into a 595x595 square.

My current fix is to remove "Hack" code, can someone please advice any "unwanted side effects" out of this?

Thanks
Author:  Thomas Hoevel [ Mon Oct 08, 2012 7:39 am ]
Post subject:  Re: Possible bug in PdfPage's WriteObject() Method
PandaKiwi wrote:
My current fix is to remove "Hack" code, can someone please advice any "unwanted side effects" out of this?
If it works for you, leave it like that.

Maybe the MediaBox must also be flipped while reading the file. I can't tell without a deep dive into the source code.
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