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package reportbuilder;

import java.awt.Font;
import java.text.NumberFormat;
import net.sf.jasperreports.engine.JRChart;
import net.sf.jasperreports.engine.JRChartCustomizer;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.AbstractCategoryItemLabelGenerator;
import org.jfree.chart.labels.CategoryItemLabelGenerator;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.CategoryDataset;
/**
 *
 * @author Administrator
 */
public class CustomizeLineChart implements JRChartCustomizer {
 
    @Override
    public void customize(JFreeChart chart, JRChart jasperChart)
    {
        CategoryPlot categoryPlot; 
        LineAndShapeRenderer lineAndShapeRenderer;
 
        categoryPlot = (CategoryPlot) chart.getPlot();
        lineAndShapeRenderer= (LineAndShapeRenderer) categoryPlot.getRenderer();
        lineAndShapeRenderer.setBaseItemLabelsVisible(Boolean.TRUE);
        lineAndShapeRenderer.setItemLabelFont(new Font("SansSerif", Font.BOLD, 8));
        lineAndShapeRenderer.setBaseItemLabelGenerator(new CustomLabelGenerator());
        //lineAndShapeRenderer.setBaseItemLabelGenerator((CategoryItemLabelGenerator) new StandardCategoryItemLabelGenerator());
    }
    
    
	// Clase customizada, para implementar la visibilidad de los valores del grafico
	static class CustomLabelGenerator extends AbstractCategoryItemLabelGenerator implements CategoryItemLabelGenerator {
 
 
		   /**
		   * Creates a new generator that only displays labels that are greater
		   * than or equal to the threshold value.
		   *
		   * @param threshold the threshold value.
		   */
		   public CustomLabelGenerator() {
		      super("", NumberFormat.getInstance());
 
		   }
		   /**
		   * Generates a label for the specified item. The label is typically a
		   * formatted version of the data value, but any text can be used.
		   *
		   * @param dataset the dataset (<code>null</code> not permitted).
		   * @param series the series index (zero-based).
		   * @param category the category index (zero-based).
		   *
		   * @return the label (possibly <code>null</code>).
		   */
		   public String generateLabel(CategoryDataset dataset, int series,int category) {
 
		      String result = null;
 
		      Number value = dataset.getValue(series, category);
 
		      result = new java.text.DecimalFormat("#,##0.0000").format(value); // could apply formatting here
 
		      return result;   
		   }
		   /* (non Javadoc)
		    * @see org.jfree.chart.labels.CategoryItemLabelGenerator#generateRowLabel(org.jfree.data.category.CategoryDataset, int)
		    */
		   public String generateRowLabel(CategoryDataset arg0, int arg1) {
			 // TODO Stub del metodo generado automaticamente
		      return null;
		   }
		   /* (non Javadoc)
		    * @see org.jfree.chart.labels.CategoryItemLabelGenerator#generateColumnLabel(org.jfree.data.category.CategoryDataset, int)
		    */
		   public String generateColumnLabel(CategoryDataset arg0, int arg1) {
		      // TODO Stub del metodo generado automaticamente
		      return null;
		   }
	}
 
}