graficos.GraficoBarras.java Source code

Introduction

Here is the source code for graficos.GraficoBarras.java

Source

/*
 *  Editor de Proyectos. Permite crear proyectos basados en la teora de Camino Critico.
 *  Copyright (C) 2010 Martn I. Pacheco
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 *  Correo electrnico: mpacheco@alumnos.exa.unicen.edu.ar
 */

package graficos;

import java.awt.Color;
import java.awt.Dimension;
import java.awt.GradientPaint;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;
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.CategoryLabelPositions;
import org.jfree.chart.axis.NumberAxis3D;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

public class GraficoBarras extends Grafica {

    private CategoryDataset cjto_datos;
    private JFreeChart grafico;
    private ChartPanel panel_grafico;
    // Creo esta variable por que el removeSubtitles me remueve la leyenda
    private Vector<TextTitle> sub_titulos;

    public GraficoBarras() {
        inicializar();
    }

    // Mtodos publicos

    public void dibujar(Hashtable<Integer, Integer> datos, Integer rec_max_disp, Vector<String> subtitulos) {
        actualizarConjuntoDatos(datos, rec_max_disp);
        actualizarSubTitulos(subtitulos);
        grafico.getPlot().zoom(0.0);
    }

    public ChartPanel getPanelGrafico() {
        return panel_grafico;
    }

    public void destroy() {
        //grafico.clearSubtitles();
        ((DefaultCategoryDataset) cjto_datos).clear();
    }

    // Mtodos privados.

    private void inicializar() {
        sub_titulos = new Vector<TextTitle>();
        cjto_datos = new DefaultCategoryDataset();
        grafico = crearGrafico(cjto_datos);
        panel_grafico = new ChartPanel(grafico);
        panel_grafico.setFillZoomRectangle(true);
        panel_grafico.setMouseWheelEnabled(true);
        panel_grafico.setPreferredSize(new Dimension(500, 270));
    }

    // Creo el conjunto de datos que utilizara el grafico para representar.
    private void actualizarConjuntoDatos(Hashtable<Integer, Integer> datos_tabla, Integer rec_max_disp) {
        String serie_u = "Utilizados";
        String serie_d = "No utilizados";
        double num_u, num_d;
        Integer dias_totales = new Integer(datos_tabla.size());
        for (Integer dia = 1; dia <= dias_totales; dia++) {
            num_d = rec_max_disp - datos_tabla.get(dia);
            ((DefaultCategoryDataset) cjto_datos).addValue(num_d, serie_d, dia);
            num_u = datos_tabla.get(dia);
            ((DefaultCategoryDataset) cjto_datos).addValue(num_u, serie_u, dia);
        }
    }

    private void actualizarSubTitulos(Vector<String> subtitulos) {
        // Elimino los ttulos existentes.
        for (Iterator<TextTitle> it = sub_titulos.iterator(); it.hasNext();) {
            TextTitle t = it.next();
            grafico.removeSubtitle(t);
        }
        // Agrego los ttulos nuevos.
        for (Iterator<String> it = subtitulos.iterator(); it.hasNext();) {
            TextTitle t = new TextTitle(it.next());
            sub_titulos.add(t);
            grafico.addSubtitle(t);
        }

    }

    private static JFreeChart crearGrafico(CategoryDataset cjto_datos) {
        JFreeChart grafico = ChartFactory.createBarChart3D("Distribucin de Recursos", // Ttulo
                "Unidad de tiempo", // Ttulo eje x
                "Recurso", // Ttulo eje y
                cjto_datos, // Datos
                PlotOrientation.VERTICAL, // Orientacin
                true, // Incluir leyenda
                true, // Incluir tooltips
                false // Incluir URLs
        );
        grafico.setBackgroundPaint(new Color(240, 240, 240));
        grafico.getPlot().zoom(0.0);
        CategoryPlot ploter = (CategoryPlot) grafico.getPlot();
        NumberAxis3D rangeAxis = (NumberAxis3D) ploter.getRangeAxis();
        rangeAxis.setStandardTickUnits(NumberAxis3D.createIntegerTickUnits());
        BarRenderer3D renderer = (BarRenderer3D) ploter.getRenderer();
        renderer.setDrawBarOutline(false);
        GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f, 0.0f, new Color(0, 0, 64));
        GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f, 0.0f, new Color(0, 64, 0));
        renderer.setSeriesPaint(0, gp0);
        renderer.setSeriesPaint(1, gp1);
        renderer.setItemMargin(0.0);
        CategoryAxis domainAxis = ploter.getDomainAxis();
        domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(0.0));
        return grafico;
    }

}