Determining PDF Current Rotation

[wraydc]

What is the correct way to determine the current rotation of a PDF?

I am using the Rotation attribute of PdfPageBase class. This seems to correctly provide the original orientation of the scan (from the scanner for example). However, if I take a PDF file with a reported rotation of 90º, load it into Adobe Acrobat and rotate the document by 90º and then load the document into my software again, the angle of rotation still registers as 90º rather than the 180º that I was expecting.

Below is a code extract:

Code: Select all

                PdfPageBase page = pdfDoc.Pages[pdfbCurrent.iPageNumber - 1];
                PdfPageRotateAngle pdfAngle = page.Rotation;

                if (!pdfbCurrent.blPageHeightAdjusted)
                {
                    switch (page.Rotation)
                    {

All help appreciated.

Darren

[Sara.Yang]

Hello,

Thanks for your inquiry.
I simulated your scenario and tested with the latest Spire.Pdf Pack(Hot Fix) Version: 6.4.11, but I could get the correct result. If you are using an old version. I suggest that you try again with the latest one. If your issues still occurs after trying, please share us with your testing PDF for reference. You can upload here or send to us via email([email protected]).

Sincerely,
Sara
E-iceblue support team

[wraydc]

Thanks for your prompt response.

I'm currently using the version from Spire.Office 5.3.1, Spire.Pdf.dll is dated March 9th, product version 6.3.0.2046. I'll try with a later version and revert.


Darren.

[Sara.Yang]

Hello,

Thanks for your reply.
I’m looking forward to your test results, if there are still problems, please provide your input documents to us for reference, then we will do further investigation. You could upload here or send it to us via email([email protected]).

Sincerely,
Sara
E-iceblue support team