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https://issues.apache.org/jira/browse/PDFBOX-1255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18013411#comment-18013411
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Tilman Hausherr commented on PDFBOX-1255:
-----------------------------------------
I wonder if there is a need for this, people could as well just adjust the
overlay.
If we want to do this, I think the better solution is that {{OverlayPDF}}
overrides {{calculateAffineTransform()}}.
> [PATCH] Support translate/scale/rotate of overlay in Overlay.java
> -----------------------------------------------------------------
>
> Key: PDFBOX-1255
> URL: https://issues.apache.org/jira/browse/PDFBOX-1255
> Project: PDFBox
> Issue Type: Improvement
> Components: Utilities
> Affects Versions: 1.7.0
> Environment: N/A
> Reporter: Craig Ringer
> Priority: Minor
> Attachments: Overlay-transform.patch
>
>
> As part of some ground-testing work I've been doing for pdf embedding
> enhancements in Apache FOP, I've modified PDFBox's Overlay.java to support
> translation, rotation and scaling of the PDF being overlaid.
> This may be a useful feature for PDFBox, so I thought I'd send it in.
> Right now it uses the target PDF document's co-ordinate units for
> translations, so it's hard for users to know what translation to specify
> without trial and error. I'm not sure what the best way to remedy this is to
> make for a better user interface, but I suspect that adding the ability to
> set an origin (TL, BL, TR, BR, or center) that'd help. That way it's easier
> for them to say "position the overlay on the top left" for example. The
> actual translation amount could be given as a percentage of the target
> document size in that axis, maybe, or accept different unit suffixes like "%"
> or "cm". I'm not sure what the best approach is, and I won't need to explore
> it for my current project, but it should be easy enough to add.
> diffstat:
> Overlay.java | 168
> +++++++++++++++++++++++++++++++++++++++++++----------------
> 1 file changed, 123 insertions(+), 45 deletions(-)
> Next patch in series: PDFBOX-1256
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