tdf#122091 OOXML Import: Automatically break of X Axis labels

Set the TextBreak value automatically true, only if the X axis labels
rotation is 0 degree. The MS Office using a similar method because
there is no any XML tag in the OOXML standard which refer to this setting.

Change-Id: Ie84a95935f0d5c4c1f9a30803e22572141385960
Reviewed-on: https://gerrit.libreoffice.org/65853
Tested-by: Jenkins
Reviewed-by: Bartosz Kosiorek <gang65@poczta.onet.pl>

chart2/qa/extras/chart2import.cxx

@@ -75,6 +75,7 @@ public:
     void testChartHatchFillXLSX();
     void testAxisTextRotationXLSX();
     // void testTextCanOverlapXLSX(); // TODO : temporarily disabled.
+    void testTextBreakXLSX();
     void testNumberFormatsXLSX();
 
     void testTransparentBackground(OUString const & filename);
@@ -158,6 +159,7 @@ public:
     CPPUNIT_TEST(testChartHatchFillXLSX);
     CPPUNIT_TEST(testAxisTextRotationXLSX);
     // CPPUNIT_TEST(testTextCanOverlapXLSX); // TODO : temporarily disabled.
+    CPPUNIT_TEST(testTextBreakXLSX);
     CPPUNIT_TEST(testNumberFormatsXLSX);
     CPPUNIT_TEST(testAutoTitleDelDefaultValue2007XLSX);
     CPPUNIT_TEST(testAutoTitleDelDefaultValue2013XLSX);
@@ -1013,6 +1015,25 @@ void Chart2ImportTest::testTextCanOverlapXLSX()
 }
 */
 
+void Chart2ImportTest::testTextBreakXLSX()
+{
+    // tdf#122091: To check textbreak value is true in case of 0° degree of Axis label rotation.
+    load("/chart2/qa/extras/data/xlsx/", "chart_label_text_break.xlsx");
+    uno::Reference< chart::XDiagram > mxDiagram;
+    uno::Reference< beans::XPropertySet > xAxisProp;
+    bool textBreak = false;
+    uno::Reference< chart::XChartDocument > xChartDoc ( getChartCompFromSheet( 0, mxComponent ), UNO_QUERY_THROW);
+    CPPUNIT_ASSERT(xChartDoc.is());
+    mxDiagram.set(xChartDoc->getDiagram());
+    CPPUNIT_ASSERT(mxDiagram.is());
+    uno::Reference< chart::XAxisXSupplier > xAxisXSupp( mxDiagram, uno::UNO_QUERY );
+    CPPUNIT_ASSERT(xAxisXSupp.is());
+    xAxisProp = xAxisXSupp->getXAxis();
+    xAxisProp->getPropertyValue("TextBreak") >>= textBreak;
+    // Expected value of 'TextBreak' is true
+    CPPUNIT_ASSERT(textBreak);
+}
+
 void Chart2ImportTest::testNumberFormatsXLSX()
 {
     load("/chart2/qa/extras/data/xlsx/", "number-formats.xlsx");

oox/inc/drawingml/chart/objectformatter.hxx

@@ -144,6 +144,11 @@ public:
     /** Returns true, if the passed shape properties have automatic fill mode. */
     static bool         isAutomaticFill( const ModelRef< Shape >& rxShapeProp );
 
+    /** Returns true, if the X Axis label rotation is 0 degree. */
+    static bool         getTextRotation(
+                            const ModelRef< TextBody >& rxTextProp,
+                            sal_Int32 nDefaultRotation = 0 );
+
 private:
     std::shared_ptr< ObjectFormatterData > mxData;
 };

oox/source/drawingml/chart/axisconverter.cxx

@@ -260,8 +260,8 @@ void AxisConverter::convertFromModel(
                 {
                     // do not overlap text unless all labels are visible
                     aAxisProp.setProperty( PROP_TextOverlap, mrModel.mnTickLabelSkip == 1 );
-                    // do not break text into several lines
-                    aAxisProp.setProperty( PROP_TextBreak, false );
+                    // do not break text into several lines unless the rotation is 0 degree
+                    aAxisProp.setProperty( PROP_TextBreak, ObjectFormatter::getTextRotation( mrModel.mxTextProp ) );
                     // do not stagger labels in two lines
                     aAxisProp.setProperty( PROP_ArrangeOrder, cssc::ChartAxisArrangeOrderType_SIDE_BY_SIDE );
                     //! TODO #i58731# show n-th category

oox/source/drawingml/chart/objectformatter.cxx

@@ -1121,6 +1121,26 @@ bool ObjectFormatter::isAutomaticFill( const ModelRef< Shape >& rxShapeProp )
     return !rxShapeProp || !rxShapeProp->getFillProperties().moFillType.has();
 }
 
+bool ObjectFormatter::getTextRotation( const ModelRef< TextBody >& rxTextProp, sal_Int32 nDefaultRotation )
+{
+    if( rxTextProp.is() )
+    {
+        double fAnglevalue = static_cast< double >( rxTextProp->getTextProperties().moRotation.get( nDefaultRotation ) );
+        if( fAnglevalue < -5400000.0 || fAnglevalue > 5400000.0 || fAnglevalue == 0.0 )
+        {
+            return true;
+        }
+        else
+        {
+            return false;
+        }
+    }
+    else
+    {
+        return false;
+    }
+}
+
 } // namespace chart
 } // namespace drawingml
 } // namespace oox