resolved fdo#42784 BorderLine with only InnerWidth set does not work

(cherry picked from commit 971f826a96f0938bfcfd8dfe26edd50d8e031bb4)

Signed-off-by: Michael Stahl <mstahl@redhat.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/editeng/source/items/borderline.cxx b/editeng/source/items/borderline.cxx
index 61ceccead0cc..d15f53c7d43d 100644
--- a/editeng/source/items/borderline.cxx
+++ b/editeng/source/items/borderline.cxx
@@ -300,6 +300,22 @@ void SvxBorderLine::GuessLinesWidths( SvxBorderStyle nStyle, sal_uInt16 nOut, sa
     else
     {
         SetStyle( nStyle );
+        if (nOut == 0 && nIn > 0)
+        {
+            // If only inner width is given swap inner and outer widths for
+            // single line styles, otherwise GuessWidth() marks this as invalid
+            // and returns a 0 width.
+            switch (nStyle)
+            {
+                case SOLID:
+                case DOTTED:
+                case DASHED:
+                    ::std::swap( nOut, nIn);
+                    break;
+                default:
+                    ;   // nothing
+            }
+        }
         m_nWidth = m_aWidthImpl.GuessWidth( nOut, nIn, nDist );
     }
 }