Regression from commit cfb5b20cdc
(DocxAttributeOutput::OutputFlyFrame_Impl: enable DML export by default,
2013-12-18), there were two problems here.
First, <a:chOff> and <a:chExt> was not written for docx group shapes.
This can be done for toplevel shapes just by writing what would be the
shape position and size (but for docx, we don't write the size).
Second, (poly)polygon shapes used the bounding rectangle of their points
as size, which doesn't necessarily match the shape size. Given that the
group shape is meant to simply contain its children in LibreOffice (and
not have an own size), switch to using the UNO API for polygon shapes as
well, that way the two sizes will always match.
Change-Id: I4406ddefe5f6105aa2fc74d805359add452936bb
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/114305
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
4cb71fefc6