another attempt at followon patch for fdo#38385 attempt to detect rtl

First attempt confused things ( and was error prone ) by introducing
maStart and maEnd BorderLine members to BorderLine model. Better to
just leave maLeft & maRight and attempt to swap if RTL.
Of course tbh this is somewhat of an optimistic attempt to swap start and end borders
if needed. I am not at all sure though that I am dectecting the RTL-ness
of a cell in the correct way. There are some comments in the code in any case
that reflect my uncertainty ( hopefully they will be of use if/when some tweak
is needed )

Change-Id: Ie953d73067630f0041fa037c6120cdbda683e796

sc/source/filter/inc/stylesbuffer.hxx

@@ -513,7 +513,7 @@ public:
     void                importDxfBorder( sal_Int32 nElement, SequenceInputStream& rStrm );
 
     /** Final processing after import of all style settings. */
-    void                finalizeImport();
+    void                finalizeImport( bool bRTL );
 
     /** Returns the border model structure. */
     inline const BorderModel& getModel() const { return maModel; }

sc/source/filter/oox/stylesbuffer.cxx

@@ -1701,8 +1701,14 @@ void Border::importDxfBorder( sal_Int32 nElement, SequenceInputStream& rStrm )
     }
 }
 
-void Border::finalizeImport()
+void Border::finalizeImport( bool bRTL )
 {
+    if ( bRTL )
+    {
+        BorderLineModel aTmp = maModel.maLeft;
+        maModel.maLeft = maModel.maRight;
+        maModel.maRight = aTmp;
+    }
     maApiData.mbBorderUsed = maModel.maLeft.mbUsed || maModel.maRight.mbUsed || maModel.maTop.mbUsed || maModel.maBottom.mbUsed;
     maApiData.mbDiagUsed   = maModel.maDiagonal.mbUsed;
 
@@ -2579,13 +2585,22 @@ void Dxf::finalizeImport()
 {
     if( mxFont.get() )
         mxFont->finalizeImport();
+    bool bRTL = false;
     // number format already finalized by the number formats buffer
     if( mxAlignment.get() )
+    {
         mxAlignment->finalizeImport();
+        // how do we detect RTL when text dir is OOX_XF_CONTEXT? ( seems you
+        // would need access to the cell content, which we don't here )
+        if ( mxAlignment->getModel().mnTextDir == OOX_XF_TEXTDIR_RTL )
+            bRTL = true;
+    }
     if( mxProtection.get() )
         mxProtection->finalizeImport();
     if( mxBorder.get() )
-        mxBorder->finalizeImport();
+    {
+        mxBorder->finalizeImport( bRTL );
+    }
     if( mxFill.get() )
         mxFill->finalizeImport();
 }
@@ -3110,7 +3125,9 @@ void StylesBuffer::finalizeImport()
     // number formats
     maNumFmts.finalizeImport();
     // borders and fills
-    maBorders.forEachMem( &Border::finalizeImport );
+    // is there a document wide RTL setting that we
+    // would/could need to pass to finalizeImport here ?
+    maBorders.forEachMem( &Border::finalizeImport, false );
     maFills.forEachMem( &Fill::finalizeImport );
     // style XFs and cell XFs
     maStyleXfs.forEachMem( &Xf::finalizeImport );