tdf#129631 writerfilter,sw: RTF import of invalid border...

... and export of border on paragraph that clears the border from the
paragraph style.

The import problem is that a lone \brdrcf17 without any preceding
keyword about which border it belongs to (as required by the EBNF in the
RTF spec) is apparently handled by Word as overriding/clearing all
paragraph borders that may be inherited from the paragraph style.

The export problem is that a null SvxBorderLine isn't exported at all,
but there needs to be a \brdrnone to override the definition from the
style.

There was also an API problem that the null SvxBorderLine is wrongly
converted to a table::BorderLine2 with LineStyle SOLID.

Change-Id: I5fa3857de2ef843f5194e12dd0c3e57bcf1ca52b
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/138089
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@allotropia.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/editeng/source/items/frmitems.cxx b/editeng/source/items/frmitems.cxx
index c4c79dc0428b..35e1be7b094c 100644
--- a/editeng/source/items/frmitems.cxx
+++ b/editeng/source/items/frmitems.cxx
@@ -1387,7 +1387,10 @@ table::BorderLine2 SvxBoxItem::SvxLineToLine(const SvxBorderLine* pLine, bool bC
         aLine.LineWidth      = sal_uInt32( bConvert ? convertTwipToMm100( pLine->GetWidth( ) ) : pLine->GetWidth( ) );
     }
     else
+    {
         aLine.Color          = aLine.InnerLineWidth = aLine.OuterLineWidth = aLine.LineDistance  = 0;
+        aLine.LineStyle = table::BorderLineStyle::NONE; // 0 is SOLID!
+    }
     return aLine;
 }