GWT Highcharts 圆环饼图

GWT Highcharts 圆环饼图 介绍

我们已经在《GWT Highcharts 入门案例》一章中看到了用于绘制此图表的步骤。现在让我们考虑以下示例以进一步了解圆环饼图。

图表

将图表类型配置为基于“饼图”。chart.type决定图表的系列类型。此处，默认值为“line”。

chart.setType(Type.PIE);

GWT Highcharts 圆环饼图 示例

package com.yiidian.helloWorld.client;


import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import org.moxieapps.gwt.highcharts.client.*;
import org.moxieapps.gwt.highcharts.client.labels.*;
import org.moxieapps.gwt.highcharts.client.plotOptions.*;

public class HelloWorld implements EntryPoint {
    public void onModuleLoad() {
        final Chart chart = new Chart()
                .setType(Series.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);
    }
}

输出结果为：