Java 类org.jfree.chart.renderer.category.CategoryStepRenderer 实例源码

/**
 * A check for the datasetIndex and seriesIndex fields in the LegendItem
 * returned by the getLegendItem() method.
 */
public void testGetLegendItemSeriesIndex() {
    DefaultCategoryDataset dataset0 = new DefaultCategoryDataset();
    dataset0.addValue(21.0, "R1", "C1");
    dataset0.addValue(22.0, "R2", "C1");
    DefaultCategoryDataset dataset1 = new DefaultCategoryDataset();
    dataset1.addValue(23.0, "R3", "C1");
    dataset1.addValue(24.0, "R4", "C1");
    dataset1.addValue(25.0, "R5", "C1");
    CategoryStepRenderer r = new CategoryStepRenderer();
    CategoryPlot plot = new CategoryPlot(dataset0, new CategoryAxis("x"),
            new NumberAxis("y"), r);
    plot.setDataset(1, dataset1);
    /*JFreeChart chart =*/ new JFreeChart(plot);
    LegendItem li = r.getLegendItem(1, 2);
    assertEquals("R5", li.getLabel());
    assertEquals(1, li.getDatasetIndex());
    assertEquals(2, li.getSeriesIndex());
}

private JFreeChart createCategoryStepChart(String title, String xLabel, String yLabel, CategoryDataset dataset) {
 CategoryItemRenderer renderer = new CategoryStepRenderer(true);

    CategoryAxis domainAxis = new CategoryAxis(xLabel);
    NumberAxis rangeAxis = new NumberAxis(yLabel);
    CategoryPlot plot = new CategoryPlot(
        dataset, domainAxis, rangeAxis, renderer
    );
    JFreeChart chart = new JFreeChart(title, plot);
    return chart;
}

/**
   * Creates a chart.
   * 
   * @param dataset  the dataset.
   * 
   * @return The chart.
   */
  protected JFreeChart createChart(CategoryDataset dataset) {

      CategoryItemRenderer renderer = new CategoryStepRenderer(true);

      CategoryAxis domainAxis = new CategoryAxis(domainLabel);
      NumberAxis rangeAxis = new NumberAxis(rangeLabel);
      CategoryPlot plot = new CategoryPlot(
          dataset, domainAxis, rangeAxis, renderer
      );
      JFreeChart chart = new JFreeChart(chartTitle, plot);

      // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
      chart.setBackgroundPaint(Color.white);

      plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
      plot.setBackgroundPaint(Color.lightGray);
      plot.setDomainGridlinesVisible(true);
      plot.setDomainGridlinePaint(Color.white);
      plot.setRangeGridlinesVisible(true);
      plot.setRangeGridlinePaint(Color.white);

AbstractCategoryItemRenderer renderer2 = (AbstractCategoryItemRenderer)plot.getRenderer();
renderer2.setLegendItemLabelGenerator(new SOCRCategorySeriesLabelGenerator());

      domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
      domainAxis.setLowerMargin(0.0);
      domainAxis.setUpperMargin(0.0);
      domainAxis.addCategoryLabelToolTip("Type 1", "The first type.");
      domainAxis.addCategoryLabelToolTip("Type 2", "The second type.");
      domainAxis.addCategoryLabelToolTip("Type 3", "The third type.");

      rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
      rangeAxis.setLabelAngle(0 * Math.PI / 2.0);
      // OPTIONAL CUSTOMISATION COMPLETED.

setCategorySummary(dataset);
if (legendPanelOn)
    chart.removeLegend();
      return chart;

  }

/**
 * Check that this class implements PublicCloneable.
 */
public void testPublicCloneable() {
    CategoryStepRenderer r1 = new CategoryStepRenderer(false);
    assertTrue(r1 instanceof PublicCloneable);
}