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https://issues.apache.org/jira/browse/PDFBOX-4410?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16724053#comment-16724053
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Tilman Hausherr commented on PDFBOX-4410:
-----------------------------------------
That's the point of a rotation. You need to apply the rotation to the
coordinates you get. That's why I asked whether you want to paint into an
image. Note that in an unrotated page y = 0 is the bottom. In java image
coordinates, y = 0 is the top. I don't know about C# and we don't support C#.
It gets more tricky if the PDF has a cropbox where the origin is not 0,0
because then you'll have to consider that as well.
But all this isn't a "bug". That is your job as a developer to apply the
rotation. For 90° it's probably x' = y, and y' = width - x. Take a piece of
paper and write down coordinates and then move the paper and you'll quickly see
what to do.
> Not getting location of Form-Field correct when page has landscape orientation
> ------------------------------------------------------------------------------
>
> Key: PDFBOX-4410
> URL: https://issues.apache.org/jira/browse/PDFBOX-4410
> Project: PDFBox
> Issue Type: Bug
> Components: AcroForm
> Affects Versions: 2.0.12
> Reporter: Amit Maheshwari
> Priority: Critical
> Attachments: RPA_WTA_Extended (1).pdf
>
>
> In my client application, I need to know the location of form fields.
> *For getting the location, I am relaying on those widgets of field which has
> non-negative page number.*
>
> In attached Pdf File ( [^RPA_WTA_Extended (1).pdf] ). when it changes
> orientation (page - 10), I could see widgets with non-negative page number
> was giving me improper location.
>
> For getting page I'm doing this:
> {code:java}
> int getPageOfWidget(PDAnnotationWidget widget, PDPageTree pages)
> {
> return pages.indexOf(widget.getPage());
> }
> {code}
>
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