GWT Highcharts - 基本饼图

下面是一个饼图示例。

我们在 Highcharts 配置语法 章节中已经看到过用于绘制图表中的配置。现在让我们看一个基本的饼图示例。我们还将了解其他配置。我们在图表中更改了 type 属性。

图表

将图表类型配置为基于“pie”。chart.type 决定了图表的类型。此处，默认值为“line”。

chart.setType(Type.PIE);

示例

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)  
         .setChartTitleText("Browser market shares at a specific website, 2010")  
         .setPlotBackgroundColor((String)null)
         .setPlotBorderWidth(null)  
         .setPlotShadow(false) 
         .setPiePlotOptions(new PiePlotOptions()
            .setAllowPointSelect(true)  
            .setCursor(Cursor.POINTER)  
            .setPieDataLabels(new PieDataLabels()
               .setConnectorColor("#000000")  
               .setEnabled(true)  
               .setColor("#000000")
               .setFormatter(new DataLabelsFormatter() {									
                  @Override
                  public String format(DataLabelsData dataLabelsData) {
                     return "<b>" + dataLabelsData.getPointName() + "</b>: " + dataLabelsData.getYAsDouble() + " %";
                  }
               })
            )
         )
         .setLegend(new Legend()  
            .setLayout(Legend.Layout.VERTICAL)  
            .setAlign(Legend.Align.RIGHT)  
            .setVerticalAlign(Legend.VerticalAlign.TOP)  
            .setX(-100)  
            .setY(100)  
            .setFloating(true)  
            .setBorderWidth(1)  
            .setBackgroundColor("#FFFFFF")  
            .setShadow(true)
         )  
         .setToolTip(new ToolTip()  
            .setFormatter(new ToolTipFormatter() {
               @Override
               public String format(ToolTipData toolTipData) {
                  return "<b>" + toolTipData.getPointName() + "</b>: " + toolTipData.getYAsDouble() + " %"; 
               }
            }) 
         );

         chart.addSeries(chart.createSeries()  
            .setName("Browser share")  
            .setPoints(new Point[]{  
               new Point("Firefox", 45.0),  
               new Point("IE", 26.8),  
               new Point("Chrome", 12.8)  
                  .setSliced(true)  
                  .setSelected(true),  
               new Point("Safari", 8.5),  
               new Point("Opera", 6.2),  
               new Point("Others", 0.7)  
            })              
         );	        
      RootPanel.get().add(chart);
   }
}

结果

验证结果。