GWT Highcharts - Donut Chart


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Following is an example of a Donut Chart.

We have already seen the configurations used to draw a chart in Highcharts Configuration Syntax chapter.

An example of a Donut Chart is given below.

Configurations

Let us now see the additional configurations/steps taken.

chart

Configure the chart type to be 'pie' based. chart.type decides the series type for the chart. Here, the default value is "line".

chart.setType(Type.PIE);

Example

HelloWorld.java

package com.tutorialspoint.client;

import org.moxieapps.gwt.highcharts.client.Chart;
import org.moxieapps.gwt.highcharts.client.Legend;
import org.moxieapps.gwt.highcharts.client.Point;
import org.moxieapps.gwt.highcharts.client.Series.Type;
import org.moxieapps.gwt.highcharts.client.Style;

import org.moxieapps.gwt.highcharts.client.ToolTip;
import org.moxieapps.gwt.highcharts.client.ToolTipData;
import org.moxieapps.gwt.highcharts.client.ToolTipFormatter;

import org.moxieapps.gwt.highcharts.client.labels.DataLabels;
import org.moxieapps.gwt.highcharts.client.labels.DataLabelsData;
import org.moxieapps.gwt.highcharts.client.labels.DataLabelsFormatter;
import org.moxieapps.gwt.highcharts.client.labels.PieDataLabels;
import org.moxieapps.gwt.highcharts.client.labels.Labels.Align;
import org.moxieapps.gwt.highcharts.client.labels.XAxisLabels;

import org.moxieapps.gwt.highcharts.client.plotOptions.ColumnRangePlotOptions;
import org.moxieapps.gwt.highcharts.client.plotOptions.PiePlotOptions;
import org.moxieapps.gwt.highcharts.client.plotOptions.PlotOptions.Cursor;

import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.i18n.client.NumberFormat;
import com.google.gwt.user.client.ui.RootPanel;

public class HelloWorld implements EntryPoint {
   public void onModuleLoad() {
      final Chart chart = new Chart()  
         .setType(Type.PIE)  
         .setMargin(50, 0, 0, 0)  
         .setChartTitleText("Browser market shares at a specific website")  
         .setChartSubtitleText("Inner circle: 2008, outer circle: 2010")  
         .setPlotBackgroundColor("none")  
         .setPlotBorderWidth(0)  
         .setPlotShadow(false)  
         .setToolTip(new ToolTip()  
            .setFormatter(new ToolTipFormatter() {
            @Override
            public String format(ToolTipData toolTipData) {
               return "<b>" + toolTipData.getPointName() + "</b>: " + toolTipData.getYAsDouble() + " %"; 
            }
         }) 
      );

      chart.addSeries(chart.createSeries()  
         .setName("2008")  
         .setPlotOptions(new PiePlotOptions()  
            .setCenter(.5, .5)  
            .setSize(.45)  
            .setInnerSize(.20)  
            .setDataLabels(new DataLabels()  
               .setEnabled(false)  
            )  
         )  
         .setPoints(new Point[]{  
            new Point("Firefox", 44.2).setColor("#4572A7"),  
            new Point("IE", 46.6).setColor("#AA4643"),  
            new Point("Chrome", 3.1).setColor("#89A54E"),  
            new Point("Safari", 2.7).setColor("#80699B"),  
            new Point("Opera", 2.3).setColor("#3D96AE"),  
            new Point("Others", 0.4).setColor("#DB843D")  
         })  
      );  

      chart.addSeries(chart.createSeries()  
         .setName("2010")  
         .setPlotOptions(new PiePlotOptions()  
            .setCenter(.5, .5)  
            .setInnerSize(.45)  
            .setPieDataLabels(new PieDataLabels()  
               .setEnabled(true)  
               .setColor("#000000")  
               .setConnectorColor("#000000")  
            )  
         )  
         .setPoints(new Point[]{  
            new Point("Firefox", 45.0).setColor("#4572A7"),  
            new Point("IE", 26.8).setColor("#AA4643"),  
            new Point("Chrome", 12.8).setColor("#89A54E"),  
            new Point("Safari", 8.5).setColor("#80699B"),  
            new Point("Opera", 6.2).setColor("#3D96AE"),  
            new Point("Others", 0.2).setColor("#DB843D")  
         })  
      );  
      RootPanel.get().add(chart);
   }
}

Result

Verify the result.

Donut Chart
gwt_highcharts_pie_charts.htm
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