ooxml: Preserve the original picture in artistic effects

When Word applies an artistic effect, it creates two embedded files;
one contains the bitmap with the effect and the other one contains the
original bitmap to be able to undo the effect.

This patch reads the original bitmap, stores it in the shape grab bag
and saves it back to the docx file. Added unit tests too.

TODO: right now, if two effects point to the same original bitmap it
is stored twice, we should improve this.

Change-Id: Ia72034a257739abe4ffafa0f42b2a912e4bf9436

1 files changed, 7 insertions, 1 deletions

diff --git a/oox/source/drawingml/fillproperties.cxx b/oox/source/drawingml/fillproperties.cxx
index a9ca0db37546..7d816758f459 100644
--- a/oox/source/drawingml/fillproperties.cxx
+++ b/oox/source/drawingml/fillproperties.cxx
@@ -608,7 +608,7 @@ css::beans::PropertyValue ArtisticEffectProperties::getEffect()
     if( msName.isEmpty() )
         return pRet;
 
-    css::uno::Sequence< css::beans::PropertyValue > aSeq( maAttribs.size() );
+    css::uno::Sequence< css::beans::PropertyValue > aSeq( maAttribs.size() + 1 );
     sal_uInt32 i = 0;
     for( std::map< OUString, css::uno::Any >::iterator it = maAttribs.begin(); it != maAttribs.end(); ++it )
     {
@@ -617,6 +617,12 @@ css::beans::PropertyValue ArtisticEffectProperties::getEffect()
         i++;
     }
 
+    if( mrOleObjectInfo.maEmbeddedData.hasElements() )
+    {
+        aSeq[i].Name = "OriginalGraphic";
+        aSeq[i].Value = uno::makeAny( mrOleObjectInfo.maEmbeddedData );
+    }
+
     pRet.Name = msName;
     pRet.Value = css::uno::Any( aSeq );