After rotating a PDF to 90 degrees then saving the file the width and height are flipped incorrectly and the image isn't properly rotated.
1. Using the attached file create a test case with the following code.
public void Rotate_With90DegreeRotation_WillRevertToPortraitAfterSaving()
{
var originalDocument = PdfReader.Open("0_degrees.pdf");
var page = originalDocument.Pages[0];
page.Rotate = 90;
page.Orientation = PageOrientation.Landscape;
originalDocument.Save("90_degrees.pdf");
originalDocument.Close();
originalDocument.Dispose();
// read the file again to check orienation
var rotatedDocument = PdfReader.Open("90_degrees.pdf");
var rotatedPage = rotatedDocument.Pages[0];
var rotatedHeight = rotatedPage.Height;
var rotatedWidth = rotatedPage.Width;
var rotatedOrientation = rotatedPage.Orientation;
rotatedDocument.Close();
rotatedDocument.Dispose();
Assert.IsTrue(rotatedWidth > rotatedHeight); // test fails here
}
2. See result of test.
It appears that the save is doing something with the Media Box dimensions that may be causing this issue. I've implemented a work around in my code to make all 90 and 270 degree rotations set to a "Portrait" orientation before saving. This seem to fix the issue, but definitely a HACK.
Here's my work around code:c
page.Rotate = 90;
if (pageToRotate.Rotate == 90)
{
// HACK to fix bug with PDF Sharp; setting Orientation will flip the Height and Width, but loading the image again will be incorrect
pageToRotate.Height = originalWidth;
pageToRotate.Width = originalHeight;
// END HACK
pageToRotate.Orientation = PageOrientation.Landscape;
}
else
{
pageToRotate.Orientation = PageOrientation.Portrait;
}
Comments: ** Comment from web user: ThomasHoevel **
Fixed in the internal builds using the change documented in the forum:
http://forum.pdfsharp.net/viewtopic.php?p=9591#p9591