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https://issues.apache.org/jira/browse/PDFBOX-854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12922629#action_12922629
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Andreas Lehmkühler commented on PDFBOX-854:
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Gotcha!! Instead of just adding a new stream iText first inserts a new stream
at the beginning. This stream only contains a "q"-command to save the initial
graphics state. After that the original stream is added. Finally a third stream
is created, which starts with a "Q-command" to restore the initial graphics
state without any modifications especially no changes to the ctm. That's quite
smart. I'll improve the PDPageStreamContent constructor to copy that behaviour.
> PDPageContentStream.drawString() doesn't work with all PDFs
> -----------------------------------------------------------
>
> Key: PDFBOX-854
> URL: https://issues.apache.org/jira/browse/PDFBOX-854
> Project: PDFBox
> Issue Type: Bug
> Components: PDModel
> Affects Versions: 1.3.0
> Environment: JDK 1.6.0_21
> Reporter: MH
> Attachments: Text_Added_With_iText.zip, Website_A4_Landscape_PDF14.zip
>
>
> I add custom text to misc exsiting PDF files. Now I wondered why my text
> doesn't appear for a specific PDF. It is not encrypted, has the same page
> size and adding Text with iText 2.1.7 works as expected. My code to add text
> is:
> ----------------------------------
> final PDPage page = (PDPage) allPages.get(i);
> final PDPageContentStream contentStream = new
> PDPageContentStream(doc, page, true, false);
> contentStream.beginText();
> contentStream.setFont(font, sizeOfFont);
> contentStream.moveTextPositionByAmount(xf, yf);
> contentStream.drawString(text);
> contentStream.endText();
> contentStream.close();
> ---------------------------------
> I tried to find differences between this PDF and other PDFs. What I noticed:
> the PDF where I can't see the text has a PDF-Version "1.3" and was created by
> "AFPL Ghostscript 8.54". Is there some known issue with PDFBox and such
> "older" PDF formats?
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