DOCX import: handle horizontal flip of bitmaps

Horizontal mirror on the UNO API level, mirror on the vertical axis
internally.

Change-Id: If142274a8f81a6875059a2651af6d8470870a36a
Reviewed-on: https://gerrit.libreoffice.org/48843Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>

sw/qa/extras/ooxmlexport/ooxmlexport11.cxx

@@ -170,6 +170,12 @@ DECLARE_OOXMLEXPORT_TEST(testTdf113183, "tdf113183.docx")
                                                 "HoriOrientPosition"));
 }
 
+DECLARE_OOXMLEXPORT_TEST(testGraphicObjectFliph, "graphic-object-fliph.docx")
+{
+    CPPUNIT_ASSERT(getProperty<bool>(getShape(1), "HoriMirroredOnEvenPages"));
+    CPPUNIT_ASSERT(getProperty<bool>(getShape(1), "HoriMirroredOnOddPages"));
+}
+
 DECLARE_OOXMLEXPORT_TEST(testTdf113547, "tdf113547.docx")
 {
     uno::Reference<beans::XPropertySet> xPropertySet(

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -125,6 +125,7 @@
 #include <IDocumentSettingAccess.hxx>
 #include <IDocumentStylePoolAccess.hxx>
 #include <IDocumentRedlineAccess.hxx>
+#include <grfatr.hxx>
 
 #include <osl/file.hxx>
 #include <vcl/embeddedfontshelper.hxx>
@@ -4713,8 +4714,21 @@ void DocxAttributeOutput::FlyFrameGraphic( const SwGrfNode* pGrfNode, const Size
     m_pSerializer->startElementNS( XML_pic, XML_spPr,
             XML_bwMode, "auto",
             FSEND );
-    m_pSerializer->startElementNS( XML_a, XML_xfrm,
-            FSEND );
+
+    rtl::Reference<sax_fastparser::FastAttributeList> xFrameAttributes(
+        FastSerializerHelper::createAttrList());
+
+    if (pGrfNode)
+    {
+        MirrorGraph eMirror = pGrfNode->GetSwAttrSet().Get(RES_GRFATR_MIRRORGRF).GetValue();
+        if (eMirror == MirrorGraph::Vertical || eMirror == MirrorGraph::Both)
+            // Mirror on the vertical axis is a horizontal flip.
+            xFrameAttributes->add(XML_flipH, "1");
+    }
+
+    m_pSerializer->startElementNS(
+        XML_a, XML_xfrm, uno::Reference<xml::sax::XFastAttributeList>(xFrameAttributes.get()));
+
     m_pSerializer->singleElementNS( XML_a, XML_off,
             XML_x, "0", XML_y, "0",
             FSEND );

writerfilter/source/dmapper/GraphicImport.cxx

@@ -1334,6 +1334,17 @@ uno::Reference< text::XTextContent > GraphicImport::createGraphicObject( const b
                 m_pImpl->applyMargins(xGraphicObjectProperties);
                 m_pImpl->applyName(xGraphicObjectProperties);
             }
+
+            // Handle horizontal flip.
+            bool bMirrored = false;
+            xShapeProps->getPropertyValue("IsMirrored") >>= bMirrored;
+            if (bMirrored)
+            {
+                xGraphicObjectProperties->setPropertyValue("HoriMirroredOnEvenPages",
+                                                           uno::makeAny(true));
+                xGraphicObjectProperties->setPropertyValue("HoriMirroredOnOddPages",
+                                                           uno::makeAny(true));
+            }
         }
     }
     catch( const uno::Exception& e )