fdo#72306 Axis names were lost after saving file on LO.

  While exporting chart "crosses" position values were
  not handled properly in chartexport.
  Fixed this issue by handling "autozero" value for c:crosses.
  Added unit test.

Change-Id: I3489908d4c3d4b41a04debfecf95e65f373649ce

chart2/qa/extras/chart2export.cxx

@@ -34,6 +34,7 @@ public:
     void testTrendline();
     void testStockChart();
     void testBarChart();
+    void testCrosses();
 
     CPPUNIT_TEST_SUITE(Chart2ExportTest);
     CPPUNIT_TEST(test);
@@ -41,6 +42,7 @@ public:
     CPPUNIT_TEST(testTrendline);
     CPPUNIT_TEST(testStockChart);
     CPPUNIT_TEST(testBarChart);
+    CPPUNIT_TEST(testCrosses);
 
     CPPUNIT_TEST_SUITE_END();
 
@@ -425,6 +427,14 @@ void Chart2ExportTest::testBarChart()
     assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:barChart/c:barDir", "val", "col");
 }
 
+void Chart2ExportTest::testCrosses()
+{
+    load("/chart2/qa/extras/data/docx/", "Bar_horizontal_cone.docx");
+    xmlDocPtr pXmlDoc = parseExport("word/charts/chart", "Office Open XML Text");
+
+    assertXPath(pXmlDoc, "/c:chartSpace/c:chart/c:plotArea/c:catAx/c:crosses", "val", "autoZero");
+}
+
 CPPUNIT_TEST_SUITE_REGISTRATION(Chart2ExportTest);
 
 CPPUNIT_PLUGIN_IMPLEMENT();

oox/source/drawingml/chart/axisconverter.cxx

@@ -323,7 +323,7 @@ void AxisConverter::convertFromModel( const Reference< XCoordinateSystem >& rxCo
         {
             case XML_min:       eAxisPos = cssc::ChartAxisPosition_START;   break;
             case XML_max:       eAxisPos = cssc::ChartAxisPosition_END;     break;
-            case XML_autoZero:  eAxisPos = cssc::ChartAxisPosition_VALUE;   break;
+            case XML_autoZero:  eAxisPos = cssc::ChartAxisPosition_ZERO;   break;
         }
         if( !mrModel.mbAuto )
             aAxisProp.setProperty( PROP_CrossoverPosition, eAxisPos );

xmloff/source/chart/XMLAxisPositionPropertyHdl.cxx

@@ -62,6 +62,14 @@ bool XMLAxisPositionPropertyHdl::importXML( const OUString& rStrImpValue,
             bResult = true;
         }
     }
+    else if( rStrImpValue.equals( GetXMLToken(XML_0) ) )
+    {
+        if( !m_bCrossingValue )
+        {
+            rValue <<= ::com::sun::star::chart::ChartAxisPosition_ZERO;
+            bResult = true;
+        }
+    }
     else
     {
         if( !m_bCrossingValue )