RTF filter: handle mirrored margins

Change-Id: I122f5f23e510ae42664d2b69504f4722aa05597e

sw/qa/extras/rtfexport/data/margmirror.rtf

+{\rtf1
+\paperw11906\paperh16838\margl1800\margr4200\margt1440\margb1440
+\margmirror
+foo
+\par
+\pagebb
+bar
+\par
+}

sw/qa/extras/rtfexport/rtfexport.cxx

@@ -15,6 +15,7 @@
 #include <com/sun/star/drawing/FillStyle.hpp>
 #include <com/sun/star/drawing/PointSequenceSequence.hpp>
 #include <com/sun/star/frame/XStorable.hpp>
+#include <com/sun/star/style/PageStyleLayout.hpp>
 #include <com/sun/star/table/BorderLine2.hpp>
 #include <com/sun/star/table/ShadowFormat.hpp>
 #include <com/sun/star/text/FontEmphasis.hpp>
@@ -859,6 +860,13 @@ DECLARE_RTFEXPORT_TEST(testTdf88583, "tdf88583.odt")
     CPPUNIT_ASSERT_EQUAL(static_cast<sal_Int32>(0x00cc00), getProperty<sal_Int32>(getParagraph(1), "FillColor"));
 }
 
+DECLARE_RTFEXPORT_TEST(testMargmirror, "margmirror.rtf")
+{
+    // \margmirror was not handled, this was PageStyleLayout_ALL.
+    uno::Reference<beans::XPropertySet> xPageStyle(getStyles("PageStyles")->getByName("Standard"), uno::UNO_QUERY);
+    CPPUNIT_ASSERT_EQUAL(style::PageStyleLayout_MIRRORED, getProperty<style::PageStyleLayout>(xPageStyle, "PageStyleLayout"));
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/ww8/rtfexport.cxx

@@ -512,6 +512,9 @@ void RtfExport::ExportDocument_Impl()
     // Record changes?
     if (nsRedlineMode_t::REDLINE_ON & mnRedlineMode)
         Strm().WriteCharPtr(OOO_STRING_SVTOOLS_RTF_REVISIONS);
+    // Mirror margins?
+    if ((nsUseOnPage::PD_MIRROR & pDoc->GetPageDesc(0).ReadUseOn()) == nsUseOnPage::PD_MIRROR)
+        Strm().WriteCharPtr(OOO_STRING_SVTOOLS_RTF_MARGMIRROR);
     // Init sections
     m_pSections = new MSWordSections(*this);
 

writerfilter/source/rtftok/rtfdocumentimpl.cxx

@@ -3491,6 +3491,9 @@ RTFError RTFDocumentImpl::dispatchFlag(RTFKeyword nKeyword)
     case RTF_NOCOLBAL:
         m_aSettingsTableSprms.set(NS_ooxml::LN_CT_Compat_noColumnBalance, std::make_shared<RTFValue>(1));
         break;
+    case RTF_MARGMIRROR:
+        m_aSettingsTableSprms.set(NS_ooxml::LN_CT_Settings_mirrorMargins, std::make_shared<RTFValue>(1));
+        break;
     default:
     {
         SAL_INFO("writerfilter", "TODO handle flag '" << lcl_RtfToString(nKeyword) << "'");