adapting some contributions by Axel Richter on SO

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1841988 13f79535-47bb-0310-9956-ffa450edef68

src/examples/src/org/apache/poi/xslf/usermodel/BarChartDemo.java

@@ -115,6 +115,9 @@ public class BarChartDemo {
         // in order to transform a bar chart into a column chart, you just need to change the bar direction
         bar.setBarDirection(BarDirection.COL);
 
+        // looking for "Stacked Bar Chart"? uncomment the following line
+        // bar.setBarGrouping(BarGrouping.STACKED);
+
         // additionally, you can adjust the axes
         bar.getCategoryAxis().setOrientation(AxisOrientation.MAX_MIN);
         bar.getValueAxes().get(0).setPosition(AxisPosition.TOP);

src/examples/src/org/apache/poi/xssf/usermodel/examples/BarChart.java

@@ -28,8 +28,10 @@ import org.apache.poi.xddf.usermodel.XDDFShapeProperties;
 import org.apache.poi.xddf.usermodel.XDDFSolidFillProperties;
 import org.apache.poi.xddf.usermodel.chart.AxisCrosses;
 import org.apache.poi.xddf.usermodel.chart.AxisPosition;
+import org.apache.poi.xddf.usermodel.chart.BarDirection;
 import org.apache.poi.xddf.usermodel.chart.ChartTypes;
 import org.apache.poi.xddf.usermodel.chart.LegendPosition;
+import org.apache.poi.xddf.usermodel.chart.XDDFBarChartData;
 import org.apache.poi.xddf.usermodel.chart.XDDFCategoryAxis;
 import org.apache.poi.xddf.usermodel.chart.XDDFChartData;
 import org.apache.poi.xddf.usermodel.chart.XDDFChartLegend;
@@ -86,14 +88,14 @@ public class BarChart {
             data.addSeries(xs, ys2);
             chart.plot(data);
 
-            XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(PresetColor.CHARTREUSE));
-            XDDFChartData.Series firstSeries = data.getSeries().get(0);
-            XDDFShapeProperties properties = firstSeries.getShapeProperties();
-            if (properties == null) {
-                properties = new XDDFShapeProperties();
-            }
-            properties.setFillProperties(fill);
-            firstSeries.setShapeProperties(properties);
+            // in order to transform a bar chart into a column chart, you just need to change the bar direction
+            XDDFBarChartData bar = (XDDFBarChartData) data;
+            bar.setBarDirection(BarDirection.COL);
+            // looking for "Stacked Bar Chart"? uncomment the following line
+            // bar.setBarGrouping(BarGrouping.STACKED);
+
+            solidFillSeries(data, 0, PresetColor.CHARTREUSE);
+            solidFillSeries(data, 1, PresetColor.TURQUOISE);
 
             // Write the output to a file
             try (FileOutputStream fileOut = new FileOutputStream("ooxml-bar-chart.xlsx")) {
@@ -101,4 +103,15 @@ public class BarChart {
             }
         }
     }
+
+    private static void solidFillSeries(XDDFChartData data, int index, PresetColor color) {
+        XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(color));
+        XDDFChartData.Series firstSeries = data.getSeries().get(index);
+        XDDFShapeProperties properties = firstSeries.getShapeProperties();
+        if (properties == null) {
+            properties = new XDDFShapeProperties();
+        }
+        properties.setFillProperties(fill);
+        firstSeries.setShapeProperties(properties);
+    }
 }

src/examples/src/org/apache/poi/xwpf/usermodel/examples/BarChartExample.java

@@ -43,9 +43,9 @@ import org.apache.poi.xwpf.usermodel.XWPFDocument;
 /**
  * Build a bar chart from a template docx
  */
-public class BarChartExampleDOCX {
+public class BarChartExample {
     private static void usage(){
-        System.out.println("Usage: BarChartDemo <bar-chart-template.docx> <bar-chart-data.txt>");
+        System.out.println("Usage: BarChartExample <bar-chart-template.docx> <bar-chart-data.txt>");
         System.out.println("    bar-chart-template.docx     template with a bar chart");
         System.out.println("    bar-chart-data.txt          the model to set. First line is chart title, " +
                 "then go pairs {axis-label value}");
@@ -120,6 +120,9 @@ public class BarChartExampleDOCX {
         // in order to transform a bar chart into a column chart, you just need to change the bar direction
         bar.setBarDirection(BarDirection.COL);
         
+        // looking for "Stacked Bar Chart"? uncomment the following line
+        // bar.setBarGrouping(BarGrouping.STACKED);
+
         // additionally, you can adjust the axes
         bar.getCategoryAxis().setOrientation(AxisOrientation.MAX_MIN);
         bar.getValueAxes().get(0).setPosition(AxisPosition.TOP);

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFBarChartData.java

@@ -34,9 +34,24 @@ public class XDDFBarChartData extends XDDFChartData {
     public XDDFBarChartData(CTBarChart chart, Map<Long, XDDFChartAxis> categories,
             Map<Long, XDDFValueAxis> values) {
         this.chart = chart;
+        if (chart.getBarDir() == null) {
+            chart.addNewBarDir().setVal(BarDirection.BAR.underlying);
+        }
         for (CTBarSer series : chart.getSerList()) {
             this.series.add(new Series(series, series.getCat(), series.getVal()));
         }
+        defineAxes(categories, values);
+    }
+
+    private void defineAxes(Map<Long, XDDFChartAxis> categories, Map<Long, XDDFValueAxis> values) {
+        if (chart.sizeOfAxIdArray() == 0) {
+            for (Long id : categories.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+            for (Long id : values.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+        }
         defineAxes(chart.getAxIdArray(), categories, values);
     }
 

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFChart.java

@@ -214,6 +214,34 @@ public abstract class XDDFChart extends POIXMLDocumentPart implements TextContai
         chart.getAutoTitleDeleted().setVal(deleted);
     }
 
+    /**
+     * @since 4.0.1
+     */
+    public Boolean getTitleOverlay() {
+        if (chart.isSetTitle()) {
+            CTTitle title = chart.getTitle();
+            if (title.isSetOverlay()) {
+                return title.getOverlay().getVal();
+            }
+        }
+        return null;
+    }
+
+    /**
+     * @since 4.0.1
+     */
+    public void setTitleOverlay(boolean overlay) {
+        if (!chart.isSetTitle()) {
+            chart.addNewTitle();
+        }
+        CTTitle title = chart.getTitle();
+        if (title.isSetOverlay()) {
+            title.getOverlay().setVal(overlay);
+        } else {
+            title.addNewOverlay().setVal(overlay);
+        }
+    }
+
     /**
      * Get the chart title body if there is one, i.e. title is set and is not a
      * formula.
@@ -327,7 +355,7 @@ public abstract class XDDFChart extends POIXMLDocumentPart implements TextContai
     private Map<Long, XDDFChartAxis> getCategoryAxes() {
         CTPlotArea plotArea = getCTPlotArea();
         int sizeOfArray = plotArea.sizeOfCatAxArray();
-        Map<Long, XDDFChartAxis> axes = new HashMap<Long, XDDFChartAxis>(sizeOfArray);
+        Map<Long, XDDFChartAxis> axes = new HashMap<>(sizeOfArray);
         for (int i = 0; i < sizeOfArray; i++) {
             CTCatAx category = plotArea.getCatAxArray(i);
             axes.put(category.getAxId().getVal(), new XDDFCategoryAxis(category));

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFLineChartData.java

@@ -38,6 +38,18 @@ public class XDDFLineChartData extends XDDFChartData {
         for (CTLineSer series : chart.getSerList()) {
             this.series.add(new Series(series, series.getCat(), series.getVal()));
         }
+        defineAxes(categories, values);
+    }
+
+    private void defineAxes(Map<Long, XDDFChartAxis> categories, Map<Long, XDDFValueAxis> values) {
+        if (chart.sizeOfAxIdArray() == 0) {
+            for (Long id : categories.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+            for (Long id : values.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+        }
         defineAxes(chart.getAxIdArray(), categories, values);
     }
 

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFRadarChartData.java

@@ -38,6 +38,18 @@ public class XDDFRadarChartData extends XDDFChartData {
         for (CTRadarSer series : chart.getSerList()) {
             this.series.add(new Series(series, series.getCat(), series.getVal()));
         }
+        defineAxes(categories, values);
+    }
+
+    private void defineAxes(Map<Long, XDDFChartAxis> categories, Map<Long, XDDFValueAxis> values) {
+        if (chart.sizeOfAxIdArray() == 0) {
+            for (Long id : categories.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+            for (Long id : values.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+        }
         defineAxes(chart.getAxIdArray(), categories, values);
     }
 

src/ooxml/java/org/apache/poi/xddf/usermodel/chart/XDDFScatterChartData.java

@@ -38,6 +38,18 @@ public class XDDFScatterChartData extends XDDFChartData {
         for (CTScatterSer series : chart.getSerList()) {
             this.series.add(new Series(series, series.getXVal(), series.getYVal()));
         }
+        defineAxes(categories, values);
+    }
+
+    private void defineAxes(Map<Long, XDDFChartAxis> categories, Map<Long, XDDFValueAxis> values) {
+        if (chart.sizeOfAxIdArray() == 0) {
+            for (Long id : categories.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+            for (Long id : values.keySet()) {
+                chart.addNewAxId().setVal(id);
+            }
+        }
         defineAxes(chart.getAxIdArray(), categories, values);
     }
 
@@ -99,6 +111,28 @@ public class XDDFScatterChartData extends XDDFChartData {
             return series.getTx();
         }
 
+        /**
+         * @since 4.0.1
+         */
+        public Boolean getSmooth() {
+            if (series.isSetSmooth()) {
+                return series.getSmooth().getVal();
+            } else {
+                return null;
+            }
+        }
+
+        /**
+         * @since 4.0.1
+         */
+        public void setSmooth(boolean smooth) {
+            if (series.isSetSmooth()) {
+                series.getSmooth().setVal(smooth);
+            } else {
+                series.addNewSmooth().setVal(smooth);
+            }
+        }
+
         @Override
         public void setShowLeaderLines(boolean showLeaderLines) {
             if (!series.isSetDLbls()) {