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https://issues.apache.org/jira/browse/PDFBOX-4002?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16246046#comment-16246046
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Vlad-Tudor Marchis commented on PDFBOX-4002:
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Update, I have solved it by adding this line before drawing the string:
contentStream.appendRawCommands("0 Tr ");

> Layer Utility - Text not being displayed when overlaying
> --------------------------------------------------------
>
>                 Key: PDFBOX-4002
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4002
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Rendering
>            Reporter: Vlad-Tudor Marchis
>         Attachments: Overlayer.zip, base.pdf, out.pdf, overlay.pdf
>
>
> I've had some problems with the layer utility when trying to overlay two 
> PDFs. Normally it works fine, but I've encountered a type of PDF file on 
> which it doesn't work properly. 
> Text elements are not being displayed (it can be selected, but it looks to be 
> transparent), but images are.
> I've stripped down my code to the bare minimum and produced a maven project 
> with a command line and provided some examples for the base, the overlay and 
> the output I get.
> I've attached all below.
> The usage for the command line is as follows:
> java -jar Overlayer-1.0.jar -basePdf base.pdf -overlayPdf overlay.pdf -outPdf 
> out.pdf -layerName overlay
> If I try to overlay the other way around, i.e. use the overlay.pdf in the 
> -basePdf parameter and the base.pdf in the -overlayPdf parameter, it does do 
> the overlaying, but obviously, that's not what I'm looking for.
> Any hints as to why this might not work, or any particularities about the 
> base PDF that might be causing this to be behaving differently would be 
> helpful.



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