Fix: Use correct relative table width in docx export

It removes the HACK where the doc model was changed.
We introduce a pointer to a surrounding frame: an indicator
telling us that the table was placed in a frame to make it
floating.

During export, remove the frame and use the relative width of the
surrounding frame.

Change-Id: I43b45d9a9e67ee755782c9f18df22ae1d4014689
Reviewed-on: https://gerrit.libreoffice.org/67775
Tested-by: Jenkins
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

sw/qa/extras/ooxmlexport/ooxmlexport13.cxx

@@ -138,6 +138,15 @@ DECLARE_OOXMLEXPORT_TEST(testTdf116371, "tdf116371.odt")
     CPPUNIT_ASSERT_EQUAL(sal_Int32(24188), frameRect.Width);
 }
 
+DECLARE_OOXMLEXPORT_TEST(testFrameSizeExport, "floating-tables-anchor.docx")
+{
+    // Make sure the table width is 4000
+    xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+    if (!pXmlDoc)
+        return;
+    assertXPath(pXmlDoc, "/w:document/w:body/w:tbl[1]/w:tblPr/w:tblW", "w", "4000");
+}
+
 CPPUNIT_PLUGIN_IMPLEMENT();
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/qa/extras/uiwriter/uiwriter2.cxx

@@ -61,6 +61,7 @@ public:
     void testTdf122942();
     void testTdf52391();
     void testTdf101873();
+    void testTableWidth();
 
     CPPUNIT_TEST_SUITE(SwUiWriterTest2);
     CPPUNIT_TEST(testRedlineMoveInsertInDelete);
@@ -83,6 +84,7 @@ public:
     CPPUNIT_TEST(testTdf122942);
     CPPUNIT_TEST(testTdf52391);
     CPPUNIT_TEST(testTdf101873);
+    CPPUNIT_TEST(testTableWidth);
     CPPUNIT_TEST_SUITE_END();
 
 private:
@@ -914,6 +916,23 @@ void SwUiWriterTest2::testTdf101873()
     CPPUNIT_ASSERT_EQUAL(OUString("something"), pShellCursor->GetText());
 }
 
+void SwUiWriterTest2::testTableWidth()
+{
+    load(DATA_DIRECTORY, "frame_size_export.docx");
+
+    uno::Reference<frame::XStorable> xStorable(mxComponent, uno::UNO_QUERY);
+    utl::MediaDescriptor aMediaDescriptor;
+    aMediaDescriptor["FilterName"] <<= OUString("Office Open XML Text");
+    xStorable->storeToURL(maTempFile.GetURL(), aMediaDescriptor.getAsConstPropertyValueList());
+
+    // after exporting: table width was overwritten in the doc model
+    uno::Reference<text::XTextTablesSupplier> xTablesSupplier(mxComponent, uno::UNO_QUERY);
+    uno::Reference<container::XIndexAccess> xTables(xTablesSupplier->getTextTables(),
+                                                    uno::UNO_QUERY);
+    CPPUNIT_ASSERT_EQUAL(sal_Int16(100),
+                         getProperty<sal_Int16>(xTables->getByIndex(0), "RelativeWidth"));
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(SwUiWriterTest2);
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -330,10 +330,14 @@ void DocxAttributeOutput::WriteFloatingTable(ww8::Frame const* pParentFrame)
     //Save data here and restore when out of scope
     ExportDataSaveRestore aDataGuard(GetExport(), nStt, nEnd, pParentFrame);
 
-    // unset parent frame, otherwise exporter thinks we are still in a frame
+    // set a floatingTableFrame AND unset parent frame,
+    // otherwise exporter thinks we are still in a frame
+    m_rExport.SetFloatingTableFrame(pParentFrame);
     m_rExport.m_pParentFrame = nullptr;
 
     GetExport().WriteText();
+
+    m_rExport.SetFloatingTableFrame(nullptr);
 }
 
 static void checkAndWriteFloatingTables(DocxAttributeOutput& rDocxAttributeOutput)
@@ -383,15 +387,7 @@ static void checkAndWriteFloatingTables(DocxAttributeOutput& rDocxAttributeOutpu
         if (aTableGrabBag.find("TablePosition") == aTableGrabBag.end())
             continue;
 
-        // overwrite the table size from the surrounding frame format
-        // TODO remove this de-const HACK
-        const SwFormatFrameSize& aFramesize = pFrameFormat->GetFrameSize();
-        SwFormatFrameSize* pFormatFrameSize = const_cast<SwFormatFrameSize*>(&pTableFormat->GetFrameSize());
-        if(pFormatFrameSize)
-        {
-            *pFormatFrameSize = aFramesize;
-        }
-
+        // write table to docx
         ww8::Frame aFrame(*pFrameFormat,*pPosition);
         rDocxAttributeOutput.WriteFloatingTable(&aFrame);
     }
@@ -3702,6 +3698,13 @@ void DocxAttributeOutput::TableDefinition( ww8::WW8TableNodeInfoInner::Pointer_t
     SwFrameFormat *pTableFormat = pTable->GetFrameFormat( );
     const SwFormatFrameSize &rSize = pTableFormat->GetFrameSize();
     int nWidthPercent = rSize.GetWidthPercent();
+    // If we export a floating table: we use the widthPercent of the surrounding frame
+    const ww8::Frame* pFloatingTableFrame = m_rExport.GetFloatingTableFrame();
+    if (pFloatingTableFrame)
+    {
+        const SwFormatFrameSize &rFrameSize = pFloatingTableFrame->GetFrameFormat().GetFrameSize();
+        nWidthPercent = rFrameSize.GetWidthPercent();
+    }
     uno::Reference<beans::XPropertySet> xPropertySet(SwXTextTables::GetObject(*pTable->GetFrameFormat( )),uno::UNO_QUERY);
     bool isWidthRelative = false;
     xPropertySet->getPropertyValue("IsWidthRelative") >>= isWidthRelative;

sw/source/filter/ww8/docxexport.hxx

@@ -113,11 +113,16 @@ class DocxExport : public MSWordExportBase
 
     DocxSettingsData m_aSettings;
 
+    /// Pointer to the Frame of a floating table it is nested in
+    const ww8::Frame *m_pFloatingTableFrame = nullptr;
+
 public:
 
     DocxExportFilter& GetFilter() { return *m_pFilter; };
     const DocxExportFilter& GetFilter() const { return *m_pFilter; };
 
+    const ww8::Frame* GetFloatingTableFrame() { return m_pFloatingTableFrame; }
+
     /// Access to the attribute output class.
     virtual AttributeOutputBase& AttrOutput() const override;
 
@@ -287,6 +292,8 @@ public:
 
     void SetFS(::sax_fastparser::FSHelperPtr const & mpFS);
 
+    void SetFloatingTableFrame(const ww8::Frame* pF) { m_pFloatingTableFrame = pF; }
+
 private:
     DocxExport( const DocxExport& ) = delete;