Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2004, by Object Refinery Limited and Contributors. * * Project Info: http://www.jfree.org/jfreechart/index.html * * This library is free software; you can redistribute it and/or modify it under the terms * of the GNU Lesser General Public License as published by the Free Software Foundation; * either version 2.1 of the License, or (at your option) any later version. * * This library 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License along with this * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, * Boston, MA 02111-1307, USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ----------------- * BarChartDemo.java * ----------------- * (C) Copyright 2002-2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: BarChartDemo.java,v 1.16 2004/04/29 10:06:34 mungady Exp $ * * Changes * ------- * 11-Jun-2002 : Version 1 (DG); * 25-Jun-2002 : Removed redundant imports (DG); * 09-Oct-2002 : Added frame centering (DG); * 18-Nov-2002 : Changed from DefaultCategoryDataset to DefaultTableDataset (DG); * 28-Oct-2003 : Changed to display gradient paint (DG); * 10-Nov-2003 : Renamed BarChartDemo.java (DG); * */ package br.ufba.eleicoestransparentes.view.chart; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.GradientPaint; import java.util.ArrayList; 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.NumberAxis; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PiePlot; 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.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PiePlot; import org.jfree.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import br.ufba.eleicoestransparentes.business.grafico.GraficoFinal; import br.ufba.eleicoestransparentes.model.logicbeans.PontosGrafico; /** * A simple demonstration application showing how to create a bar chart. * */ public class GraficoPizza extends ApplicationFrame { /** * */ public GraficoPizza(GraficoFinal graficoFinal) { super(graficoFinal.getNome()); setContentPane(createDemoPanel(graficoFinal)); } /** * Creates a sample dataset. * * @return A sample dataset. */ private static PieDataset createDataset(ArrayList<PontosGrafico> pontos) { DefaultPieDataset dataset = new DefaultPieDataset(); for (PontosGrafico ponto : pontos) dataset.setValue(ponto.rotulo, new Double(ponto.valor)); return dataset; } /** * Creates a chart. * * @param dataset the dataset. * * @return A chart. */ private static JFreeChart createChart(PieDataset dataset, String titulo) { JFreeChart chart = ChartFactory.createPieChart(titulo, // chart title dataset, // data true, // include legend true, false); PiePlot plot = (PiePlot) chart.getPlot(); plot.setLabelFont(new Font("SansSerif", Font.PLAIN, 12)); plot.setNoDataMessage("Nenhum dado disponibilizado"); plot.setCircular(false); plot.setLabelGap(0.02); return chart; } /** * Creates a panel for the demo (used by SuperDemo.java). * * @return A panel. */ public static JPanel createDemoPanel(GraficoFinal graficoFinal) { JFreeChart chart = createChart(createDataset(graficoFinal.getPontosGrafico()), graficoFinal.getNome()); return new ChartPanel(chart); } /** * Returns a sample dataset. * * @return The dataset. */ /** * Creates a sample chart. * * @param dataset the dataset. * * @return The chart. */ // **************************************************************************** // * JFREECHART DEVELOPER GUIDE * // * The JFreeChart Developer Guide, written by David Gilbert, is available * // * to purchase from Object Refinery Limited: * // * * // * http://www.object-refinery.com/jfreechart/guide.html * // * * // * Sales are used to provide funding for the JFreeChart project - please * // * support us so that we can continue developing free software. * // **************************************************************************** /** * Starting point for the demonstration application. * * @param args ignored. public static void main(final String[] args) { BarChartDemo demo = new BarChartDemo(null); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } */ }