/* -------------------
 * ItemLabelDemo3.java
 * -------------------
 * (C) Copyright 2005, by Object Refinery Limited.
 *
 */

package demo;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.text.NumberFormat;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.labels.CategoryItemLabelGenerator;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
import org.jfree.ui.TextAnchor;

/**
 * A demo showing how to use a label generator to write the category name 
 * inside the bars in a bar chart.
 */
public class ItemLabelDemo3 extends ApplicationFrame {
    
    /**
     * Creates a new demo instance.
     *
     * @param title  the frame title.
     */
    public ItemLabelDemo3(String title) {
        
        super(title);
        JPanel chartPanel = createDemoPanel();
        chartPanel.setPreferredSize(new Dimension(500, 270));
        setContentPane(chartPanel);
        
    }

    /**
     * Returns a sample dataset.
     * 
     * @return The dataset.
     */
    private static CategoryDataset createDataset() {
       
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        dataset.addValue(51.0, "Series 1", "Apples");
        dataset.addValue(44.3, "Series 1", "Bananas");
        dataset.addValue(93.0, "Series 1", "Oranges");
        dataset.addValue(35.6, "Series 1", "Pears");
        dataset.addValue(75.1, "Series 1", "Plums");
        return dataset;
        
    }
    
    /**
     * Creates a sample chart.
     * 
     * @param dataset  the dataset.
     * 
     * @return the chart.
     */
    private static JFreeChart createChart(CategoryDataset dataset) {
        
        // create the chart...
        JFreeChart chart = ChartFactory.createBarChart(
            "Item Label Demo 3",      // chart title
            "Category",               // domain axis label
            "Value",                  // range axis label
            dataset,                  // data
            PlotOrientation.VERTICAL, // orientation
            false,                    // include legend
            true,                     // tooltips?
            false                     // URLs?
        );

        chart.setBackgroundPaint(Color.white);

        CategoryPlot plot = chart.getCategoryPlot();
        plot.setBackgroundPaint(Color.lightGray);
        plot.setDomainGridlinePaint(Color.white);
        plot.setRangeGridlinePaint(Color.white);
        
        CategoryAxis domainAxis = plot.getDomainAxis();
        domainAxis.setVisible(false);
        
        NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
        rangeAxis.setUpperMargin(0.15);
        
        CategoryItemRenderer renderer = plot.getRenderer();
        CategoryItemLabelGenerator generator 
            = new StandardCategoryItemLabelGenerator("{1}", 
                    NumberFormat.getInstance());
        renderer.setItemLabelGenerator(generator);
        renderer.setItemLabelFont(new Font("SansSerif", Font.PLAIN, 12));
        renderer.setItemLabelsVisible(true);
        renderer.setPositiveItemLabelPosition(new ItemLabelPosition(
                ItemLabelAnchor.CENTER, TextAnchor.CENTER, TextAnchor.CENTER, 
                - Math.PI / 2));
        
        return chart;
        
    }
    
    /**
     * Creates a panel for the demo (used by SuperDemo.java).
     * 
     * @return A panel.
     */
    public static JPanel createDemoPanel() {
        JFreeChart chart = createChart(createDataset());
        return new ChartPanel(chart);
    }
    
    /**
     * Starting point for the demonstration application.
     *
     * @param args  ignored.
     */
    public static void main(String[] args) {

        ItemLabelDemo3 demo = new ItemLabelDemo3("Item Label Demo 3");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);

    }

}