[Bug 60656] EMF image support in slideshows

[bu...@apache.org]

https://bz.apache.org/bugzilla/show_bug.cgi?id=60656

--- Comment #11 from Andreas Beeker <ki...@apache.org> ---
Created attachment 36864
  --> https://bz.apache.org/bugzilla/attachment.cgi?id=36864&action=edit
EMF freezing Windows OpenJDK 12

The attached EMF is freezing our OpenJDK 12 build.
https://builds.apache.org/view/P/view/POI/job/POI-DSL-Windows-1.12/

My first analysis is, that it is due some over-proportional
AffineTransformation state (800x width/scale) and the processing of TextLayout
at HwmfGraphics:488.
This is somehow accepted in Linux, but the Windows font renderer freezes in
this request.

I think the root source is that the group records
(EmfCommentDataBeginGroup/EmfCommentDataEndGroup) aren't processed/rendered at
all 
 and their bounds record would need to affect the AffineTransformation state of
the graphics context.

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