Example usage for org.jfree.chart.plot PiePlot getStartAngle

Introduction

In this page you can find the example usage for org.jfree.chart.plot PiePlot getStartAngle.

Prototype

public double getStartAngle() 

Source Link

Document

Returns the start angle for the first pie section.

Usage

From source file:org.pentaho.chart.plugin.jfreechart.JFreeChartFactoryEngine.java

public JFreeChart makePieChart(ChartModel chartModel, NamedValuesDataModel dataModel,
        final IChartLinkGenerator linkGenerator) {
    final DefaultPieDataset dataset = new DefaultPieDataset();
    for (NamedValue namedValue : dataModel) {
        if (namedValue.getName() != null) {
            dataset.setValue(namedValue.getName(),
                    scaleNumber(namedValue.getValue(), dataModel.getScalingFactor()));
        }/*from w w  w .  jav a 2s  . com*/
    }

    boolean showLegend = (chartModel.getLegend() != null) && (chartModel.getLegend().getVisible());

    String title = "";
    if ((chartModel.getTitle() != null) && (chartModel.getTitle().getText() != null)
            && (chartModel.getTitle().getText().trim().length() > 0)) {
        title = chartModel.getTitle().getText();
    }

    final JFreeChart chart = ChartFactory.createPieChart(title, dataset, showLegend, true, false);

    initChart(chart, chartModel);

    final PiePlot jFreePiePlot = (PiePlot) chart.getPlot();

    if (linkGenerator != null) {
        jFreePiePlot.setURLGenerator(new PieURLGenerator() {

            public String generateURL(PieDataset arg0, Comparable arg1, int arg2) {
                return linkGenerator.generateLink(arg1.toString(), arg1.toString(), arg0.getValue(arg1));
            }
        });
    }

    jFreePiePlot.setNoDataMessage("No data available"); //$NON-NLS-1$
    jFreePiePlot.setCircular(true);
    jFreePiePlot.setLabelGap(0.02);

    org.pentaho.chart.model.PiePlot chartBeansPiePlot = (org.pentaho.chart.model.PiePlot) chartModel.getPlot();

    List<Integer> colors = getPlotColors(chartBeansPiePlot);

    int index = 0;
    for (NamedValue namedValue : dataModel) {
        if (namedValue.getName() != null) {
            jFreePiePlot.setSectionPaint(namedValue.getName(),
                    new Color(0x00FFFFFF & colors.get(index % colors.size())));
        }
        index++;
    }

    if (chartBeansPiePlot.getLabels().getVisible()) {
        jFreePiePlot.setLabelGenerator(new StandardPieSectionLabelGenerator());

        Font font = ChartUtils.getFont(chartBeansPiePlot.getLabels().getFontFamily(),
                chartBeansPiePlot.getLabels().getFontStyle(), chartBeansPiePlot.getLabels().getFontWeight(),
                chartBeansPiePlot.getLabels().getFontSize());
        if (font != null) {
            jFreePiePlot.setLabelFont(font);
            if (chartBeansPiePlot.getLabels().getColor() != null) {
                jFreePiePlot.setLabelPaint(new Color(0x00FFFFFF & chartBeansPiePlot.getLabels().getColor()));
            }
            if (chartBeansPiePlot.getLabels().getBackgroundColor() != null) {
                jFreePiePlot.setLabelBackgroundPaint(
                        new Color(0x00FFFFFF & chartBeansPiePlot.getLabels().getBackgroundColor()));
            }
        }
    } else {
        jFreePiePlot.setLabelGenerator(null);
    }

    jFreePiePlot.setStartAngle(-chartBeansPiePlot.getStartAngle());

    return chart;
}

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