fdo63235 - correct usage of marker-start/-end for svg path data

marker orientation will be corrected in a subsequent patch

Change-Id: I0c833b62d06ad21ebe5fbaf170cfb22cecbf146d
Reviewed-on: https://gerrit.libreoffice.org/6086Reviewed-by: Regina Henschel <rb.henschel@t-online.de>
Reviewed-by: Norbert Thiebaud <nthiebaud@gmail.com>
Tested-by: Norbert Thiebaud <nthiebaud@gmail.com>

svgio/source/svgreader/svgstyleattributes.cxx

@@ -949,7 +949,7 @@ namespace svgio
                         basegfx::B2DRange aClipRange;
                         const SvgMarkerNode* pPrepared = 0;
 
-                        if(pStart)
+                        if(pStart && a==0)
                         {
                             if(prepare_singleMarker(aMarkerPrimitives, aMarkerTransform, aClipRange, *pStart))
                             {
@@ -958,20 +958,22 @@ namespace svgio
                             }
                         }
 
-                        if(pMid && nMarkerCount > 2)
+                        if(pMid)
                         {
                             if(pMid == pPrepared || prepare_singleMarker(aMarkerPrimitives, aMarkerTransform, aClipRange, *pMid))
                             {
                                 pPrepared = pMid;
+                                const sal_uInt32 nFirstIndex(a==0 ? 1 : 0);
+                                const sal_uInt32 nLastIndex(a==nCount-1 ? nMarkerCount-1 : nMarkerCount);
 
-                                for(sal_uInt32 b(1); b < nMarkerCount - 1; b++)
+                                for(sal_uInt32 b(nFirstIndex); b < nLastIndex; b++)
                                 {
                                     add_singleMarker(rTarget, aMarkerPrimitives, aMarkerTransform, aClipRange, *pPrepared, aCandidate, b);
                                 }
                             }
                         }
 
-                        if(pEnd)
+                        if(pEnd && a==nCount-1)
                         {
                             if(pEnd == pPrepared || prepare_singleMarker(aMarkerPrimitives, aMarkerTransform, aClipRange, *pEnd))
                             {