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From bugzi...@apache.org
Subject [Bug 60499] New: Deleting a picture that is used twice on a slide corrupt the slide
Date Tue, 20 Dec 2016 10:02:57 GMT

            Bug ID: 60499
           Summary: Deleting a picture that is used twice on a slide
                    corrupt the slide
           Product: POI
           Version: 3.16-dev
          Hardware: PC
            Status: NEW
          Severity: normal
          Priority: P2
         Component: XSLF
          Assignee: dev@poi.apache.org
          Reporter: amanteaux+bzapache@gmail.com
  Target Milestone: ---

Created attachment 34536
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=34536&action=edit
A test PPT with an image used twice, and a java code with a main to reproduce
the problem

If the same picture is referenced twice in a slide (with 2 XSLFPictureShape),
deleting one of the XSLFPictureShape will corrupt the slide. By corrupted, I
mean that PowerPoint won't be able to load the slide and it will replace its
content with a blank slide.
I am guessing that XSLF always deletes the image file along with the
XSLFPictureShape. What should be done is deleting the image file only if it is
not used by other XSLFPictureShape elements.

To create a slide with the same picture referenced twice:
1. insert a picture in a slide,
2. copy and past the inserted picture in the current slide.
The same picture should be duplicated in the slide.

I have put attached a zip file with:
- a PPT with one slide and an image used twice in that slide,
- a java class with a small main() to reproduce the probleme.

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