Example usage for org.jfree.chart.drawable GradientPainter GradientPainter

Introduction

In this page you can find the example usage for org.jfree.chart.drawable GradientPainter GradientPainter.

Prototype

public GradientPainter(Color color1, RectangleAnchor anchor1, Color color2, RectangleAnchor anchor2) 

Source Link

Document

Creates a new instance.

Usage

From source file:org.jfree.graphics2d.demo.SVGPieChartDemo1.java

/**
 * Creates a chart.//from w  w  w  .ja  va 2 s  .  com
 *
 * @param dataset  the dataset.
 *
 * @return A chart.
 */
private static JFreeChart createChart(PieDataset dataset) {

    JFreeChart chart = ChartFactory.createPieChart("Smart Phones Manufactured / Q3 2011", // chart title
            dataset);
    chart.removeLegend();

    // set a custom background for the chart
    chart.setBackgroundPainter(new GradientPainter(new Color(20, 20, 20), RectangleAnchor.TOP_LEFT,
            Color.DARK_GRAY, RectangleAnchor.BOTTOM_RIGHT));

    // customise the title position and font
    TextTitle t = chart.getTitle();
    t.setHorizontalAlignment(HorizontalAlignment.LEFT);
    t.setPaint(new Color(240, 240, 240));
    t.setFont(new Font("Arial", Font.BOLD, 26));

    PiePlot plot = (PiePlot) chart.getPlot();
    plot.setBackgroundPainter(null);
    plot.setInteriorGap(0.04);
    plot.setBorderPainter(null);

    // use gradients and white borders for the section colours
    plot.setSectionPaint("Others", createGradientPaint(new Color(200, 200, 255), Color.BLUE));
    plot.setSectionPaint("Samsung", createGradientPaint(new Color(255, 200, 200), Color.RED));
    plot.setSectionPaint("Apple", createGradientPaint(new Color(200, 255, 200), Color.GREEN));
    plot.setSectionPaint("Nokia", createGradientPaint(new Color(200, 255, 200), Color.YELLOW));
    plot.setBaseSectionOutlinePaint(Color.WHITE);
    plot.setSectionOutlinesVisible(true);
    plot.setBaseSectionOutlineStroke(new BasicStroke(2.0f));

    // customise the section label appearance
    plot.setLabelFont(new Font("Courier New", Font.BOLD, 20));
    plot.setLabelLinkPaint(Color.WHITE);
    plot.setLabelLinkStroke(new BasicStroke(2.0f));
    plot.setLabelOutlineStroke(null);
    plot.setLabelPaint(Color.WHITE);
    plot.setLabelBackgroundPaint(null);
    // add a subtitle giving the data source
    TextTitle source = new TextTitle("Source: http://www.bbc.co.uk/news/business-15489523",
            new Font("Courier New", Font.PLAIN, 12));
    source.setPaint(Color.WHITE);
    source.setPosition(RectangleEdge.BOTTOM);
    source.setHorizontalAlignment(HorizontalAlignment.RIGHT);
    chart.addSubtitle(source);
    return chart;

}

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