gradientpainttransformerdemo1.java

jfreechart1.0.6源程序,没有注释,不过都能运行起来

package demo;

import java.awt.*;
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.*;

public class GradientPaintTransformerDemo1 extends ApplicationFrame
{

    public GradientPaintTransformerDemo1(String s)
    {
        super(s);
        setContentPane(createDemoPanel());
    }

    private static JFreeChart createChart(String s, CategoryDataset categorydataset)
    {
        JFreeChart jfreechart = ChartFactory.createBarChart(s, null, "Value", categorydataset, PlotOrientation.VERTICAL, true, true, false);
        jfreechart.setBackgroundPaint(Color.white);
        CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot();
        categoryplot.setBackgroundPaint(Color.lightGray);
        categoryplot.setDomainGridlinePaint(Color.white);
        categoryplot.setRangeGridlinePaint(Color.white);
        categoryplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));
        BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer();
        barrenderer.setItemMargin(0.02D);
        return jfreechart;
    }

    private static CategoryDataset createDataset()
    {
        DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
        defaultcategorydataset.addValue(7D, "Series 1", "Category 1");
        defaultcategorydataset.addValue(5D, "Series 2", "Category 1");
        return defaultcategorydataset;
    }

    public static JPanel createDemoPanel()
    {
        JPanel jpanel = new JPanel(new GridLayout(2, 2));
        jpanel.setPreferredSize(new Dimension(800, 600));
        CategoryDataset categorydataset = createDataset();
        JFreeChart jfreechart = createChart("Type: VERTICAL", categorydataset);
        CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot();
        BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer();
        barrenderer.setDrawBarOutline(false);
        barrenderer.setSeriesPaint(0, new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, Color.yellow));
        barrenderer.setSeriesPaint(1, new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, Color.green));
        barrenderer.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.VERTICAL));
        ChartPanel chartpanel = new ChartPanel(jfreechart);
        jpanel.add(chartpanel);
        JFreeChart jfreechart1 = createChart("Type: HORIZONTAL", categorydataset);
        CategoryPlot categoryplot1 = (CategoryPlot)jfreechart1.getPlot();
        BarRenderer barrenderer1 = (BarRenderer)categoryplot1.getRenderer();
        barrenderer1.setDrawBarOutline(false);
        barrenderer1.setSeriesPaint(0, new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, Color.yellow));
        barrenderer1.setSeriesPaint(1, new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, Color.green));
        barrenderer1.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.HORIZONTAL));
        ChartPanel chartpanel1 = new ChartPanel(jfreechart1);
        jpanel.add(chartpanel1);
        JFreeChart jfreechart2 = createChart("Type: CENTER_VERTICAL", categorydataset);
        CategoryPlot categoryplot2 = (CategoryPlot)jfreechart2.getPlot();
        BarRenderer barrenderer2 = (BarRenderer)categoryplot2.getRenderer();
        barrenderer2.setDrawBarOutline(false);
        barrenderer2.setSeriesPaint(0, new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, Color.yellow));
        barrenderer2.setSeriesPaint(1, new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, Color.green));
        barrenderer2.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_VERTICAL));
        ChartPanel chartpanel2 = new ChartPanel(jfreechart2);
        jpanel.add(chartpanel2);
        JFreeChart jfreechart3 = createChart("Type: CENTER_HORIZONTAL", categorydataset);
        CategoryPlot categoryplot3 = (CategoryPlot)jfreechart3.getPlot();
        BarRenderer barrenderer3 = (BarRenderer)categoryplot3.getRenderer();
        barrenderer3.setDrawBarOutline(false);
        barrenderer3.setSeriesPaint(0, new GradientPaint(0.0F, 0.0F, Color.red, 0.0F, 0.0F, Color.yellow));
        barrenderer3.setSeriesPaint(1, new GradientPaint(0.0F, 0.0F, Color.blue, 0.0F, 0.0F, Color.green));
        barrenderer3.setGradientPaintTransformer(new StandardGradientPaintTransformer(GradientPaintTransformType.CENTER_HORIZONTAL));
        ChartPanel chartpanel3 = new ChartPanel(jfreechart3);
        jpanel.add(chartpanel3);
        return jpanel;
    }

    public static void main(String args[])
    {
        GradientPaintTransformerDemo1 gradientpainttransformerdemo1 = new GradientPaintTransformerDemo1("GradientPaintTransformerDemo1");
        gradientpainttransformerdemo1.pack();
        RefineryUtilities.centerFrameOnScreen(gradientpainttransformerdemo1);
        gradientpainttransformerdemo1.setVisible(true);
    }
}