[PATCH] Support translate/scale/rotate of overlay in Overlay.java
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Key: PDFBOX-1254
URL: https://issues.apache.org/jira/browse/PDFBOX-1254
Project: PDFBox
Issue Type: Improvement
Components: Utilities
Affects Versions: 1.7.0
Environment: N/A
Reporter: Craig Ringer
Priority: Minor
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(-)
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