Hossein 4e2e57b530 tdf#97663 SVGIO: Fix line spacing for <tspan> ...

tdf#97663 is a regression caused by the commit
701324a1e1f7e0c181ff1a50956ced686785ea53. The previous patch caused
LO to forget the size of the font which was needed to calculate line
height based on em units.

em, px, pt, cm, in...
https://www.w3.org/Style/Examples/007/units.en.html

Accompanied with this fix is a unit test provided to avoid this
issue in the future.

The fix can be tested with:

    make CPPUNIT_TEST_NAME="testTdf97663" -sr \
        CppunitTest_svgio

The em_units.svg is opened with Firefox, Chrome and Inkscape and the
rendering in LibreOffice is compatible with the rendering in these
applications.

Change-Id: Idaecd9fb18101f7925fe2a917f7fc3fe7257ebc5
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/127130
Tested-by: Jenkins
Reviewed-by: Thorsten Behrens <thorsten.behrens@allotropia.de>

2021-12-24 02:00:18 +01:00

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