ooxml: Preserve shape style effect attributes

Preserve <a:effectRef> tag and its contents from inside shape style
properties tag <wps:style>.

Added some lines to existing unit tests to check for the preservation
of these attributes.

Change-Id: I6e47b228dcc9788a4a2dfe87bd1186d2f04dbeea

2 files changed, 14 insertions, 4 deletions

diff --git a/oox/source/drawingml/shape.cxx b/oox/source/drawingml/shape.cxx
index 41fe7fd429d2..b2d03008e442 100644
--- a/oox/source/drawingml/shape.cxx
+++ b/oox/source/drawingml/shape.cxx
@@ -605,6 +605,16 @@ Reference< XShape > Shape::createAndInsert(
                     aEffectProperties.assignUsed( *pEffectProps );
                 // TODO: use ph color when applying effect properties
                 // nEffectPhClr = pEffectRef->maPhClr.getColor( rGraphicHelper );
+
+                // Store style-related properties to InteropGrabBag to be able to export them back
+                Sequence< PropertyValue > aProperties( 3 );
+                PUT_PROP( aProperties, 0, "SchemeClr",      pEffectRef->maPhClr.getSchemeName() );
+                PUT_PROP( aProperties, 1, "Idx",            pEffectRef->mnThemedIdx );
+                PUT_PROP( aProperties, 2, "Transformations", pEffectRef->maPhClr.getTransformations() );
+                PropertyValue pStyleFillRef;
+                pStyleFillRef.Name = "StyleEffectRef";
+                pStyleFillRef.Value = Any( aProperties );
+                putPropertyToGrabBag( pStyleFillRef );
             }
         }
 
diff --git a/oox/source/export/drawingml.cxx b/oox/source/export/drawingml.cxx
index 70f4f3b5d0cf..3b84ea0ff8b9 100644
--- a/oox/source/export/drawingml.cxx
+++ b/oox/source/export/drawingml.cxx
@@ -1794,20 +1794,20 @@ void DrawingML::WriteShapeStyle( Reference< XPropertySet > xPropSet )
 
     // extract the relevant properties from the grab bag
     Sequence< PropertyValue > aGrabBag;
-    Sequence< PropertyValue > aFillRefProperties;
-    Sequence< PropertyValue > aLnRefProperties;
+    Sequence< PropertyValue > aFillRefProperties, aLnRefProperties, aEffectRefProperties;
     mAny >>= aGrabBag;
     for( sal_Int32 i=0; i < aGrabBag.getLength(); ++i)
         if( aGrabBag[i].Name == "StyleFillRef" )
             aGrabBag[i].Value >>= aFillRefProperties;
         else if( aGrabBag[i].Name == "StyleLnRef" )
             aGrabBag[i].Value >>= aLnRefProperties;
+        else if( aGrabBag[i].Name == "StyleEffectRef" )
+            aGrabBag[i].Value >>= aEffectRefProperties;
 
     WriteStyleProperties( XML_lnRef, aLnRefProperties );
     WriteStyleProperties( XML_fillRef, aFillRefProperties );
+    WriteStyleProperties( XML_effectRef, aEffectRefProperties );
 
-    // write mock <a:effectRef>
-    mpFS->singleElementNS( XML_a, XML_effectRef, XML_idx, I32S( 0 ), FSEND );
     // write mock <a:fontRef>
     mpFS->singleElementNS( XML_a, XML_fontRef, XML_idx, "minor", FSEND );
 }