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.] * -------------------- * LegendManiaDemo.java * -------------------- * (C) Copyright 2004, by Barak Naveh and Contributors. * Original Author: Barak Naveh; * Contributor(s): -; * $Id: LegendManiaDemo.java,v 1.1 2011-01-31 09:01:46 klukas Exp $ * Changes * ------- * 26-Mar-2004 : Version 1 contributed by Barak Naveh (BN); * 27-Mar-2004 : Added showing off round corners of bounding box (BN); * 21-Apr-2004 : Added showing off legend item word-wrap (BN); */ package org.jfree.chart.demo; import java.awt.Color; import java.awt.Dimension; import java.awt.Paint; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.Legend; import org.jfree.chart.StandardLegend; 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.PlotOrientation; import org.jfree.chart.renderer.BarRenderer; import org.jfree.data.CategoryDataset; import org.jfree.data.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; /** * A demo that shows legend positions and legend bounding box options. * * @author Barak Naveh * @since March 26, 2004 */ public class LegendManiaDemo extends ApplicationFrame { /** The chart title. */ private static final String CHART_TITLE = "Legend Mania Demo"; /** The background paint. */ private static final Paint BACKGROUND_PAINT = new Color(255, 240, 240); /** The chart of this demo */ private JFreeChart demoChart; /** * A demo application that shows legend positions and legend bounding box * options. * * @param title * the frame title. */ public LegendManiaDemo(final String title) { super(title); final CategoryDataset dataset = createDataset(); this.demoChart = createChart(dataset); final ChartPanel chartPanel = new ChartPanel(this.demoChart); chartPanel.setPreferredSize(new Dimension(500, 270)); setContentPane(chartPanel); } /** * Returns a sample dataset. * * @return The dataset. */ private CategoryDataset createDataset() { // row keys... final String series1 = "Birds"; final String series2 = "Beas"; final String series3 = "A very very very very very long snake"; // column keys... final String category1 = "Shopping"; final String category2 = "Socializing"; final String category3 = "Sex"; final String category4 = "TV Watching"; // create the dataset... final DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.0, series1, category1); dataset.addValue(4.0, series1, category2); dataset.addValue(3.0, series1, category3); dataset.addValue(5.0, series1, category4); dataset.addValue(5.0, series2, category1); dataset.addValue(7.0, series2, category2); dataset.addValue(6.0, series2, category3); dataset.addValue(8.0, series2, category4); dataset.addValue(4.0, series3, category1); dataset.addValue(3.0, series3, category2); dataset.addValue(2.0, series3, category3); dataset.addValue(3.0, series3, category4); return dataset; } /** * Creates a sample chart. * * @param dataset * the dataset. * @return The chart. */ private JFreeChart createChart(final CategoryDataset dataset) { // create the chart... final JFreeChart chart = ChartFactory.createBarChart(CHART_TITLE, // chart title "Activity", // domain axis label "Rate", // range axis label dataset, // data PlotOrientation.VERTICAL, // orientation true, // include legend true, // tooltips? false // URLs? ); // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART... // set the background color for the chart... chart.setBackgroundPaint(new Color(255, 255, 180)); // get a reference to the plot for further customisation... final CategoryPlot plot = chart.getCategoryPlot(); plot.setBackgroundPaint(BACKGROUND_PAINT); plot.setDomainGridlinePaint(Color.white); plot.setRangeGridlinePaint(Color.white); // set the range axis to display integers only... final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); // disable bar outlines... final BarRenderer renderer = (BarRenderer) plot.getRenderer(); renderer.setDrawBarOutline(false); final CategoryAxis domainAxis = plot.getDomainAxis(); domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0)); final StandardLegend legend = (StandardLegend) chart.getLegend(); legend.setBackgroundPaint(Color.orange); legend.setOutlinePaint(Color.orange); // activate word wrapping when legend is vertical. legend.setPreferredWidth(125); // OPTIONAL CUSTOMISATION COMPLETED. return chart; } /** * Starting point for the demonstration application. * * @param args * ignored. */ public static void main(final String[] args) { final LegendManiaDemo demo = new LegendManiaDemo(CHART_TITLE); demo.pack(); demo.setSize(800, 600); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); final Thread updater = demo.new UpdaterThread(); updater.setDaemon(true); updater.start(); } /** * A thread for updating the legend position in a loop. */ private class UpdaterThread extends Thread { /** * @see java.lang.Runnable#run() */ public void run() { final int[] anchors = { Legend.NORTH_NORTHWEST, Legend.NORTH, Legend.NORTH_NORTHEAST, Legend.EAST_NORTHEAST, Legend.EAST, Legend.EAST_SOUTHEAST, Legend.SOUTH_SOUTHEAST, Legend.SOUTH, Legend.SOUTH_SOUTHWEST, Legend.WEST_SOUTHWEST, Legend.WEST, Legend.WEST_NORTHWEST }; final String[] anchorNames = { "NORTH_NORTHWEST", "NORTH", "NORTH_NORTHEAST", "EAST_NORTHEAST", "EAST", "EAST_SOUTHEAST", "SOUTH_SOUTHEAST", "SOUTH", "SOUTH_SOUTHWEST", "WEST_SOUTHWEST", "WEST", "WEST_NORTHWEST" }; setPriority(MIN_PRIORITY); // be nice final StandardLegend legend = (StandardLegend) demoChart.getLegend(); int i = 0; while (true) { // set the next anchor point legend.setTitle(anchorNames[i]); legend.setAnchor(anchors[i]); i = (i + 1) % anchors.length; // set rectangular corners of bounding box and wait for a second legend.setBoundingBoxArcHeight(0); legend.setBoundingBoxArcWidth(0); try { sleep(1000); } catch (InterruptedException e) { // ignored. } // set round corners of bounding box and wait for a second legend.setBoundingBoxArcHeight(10); legend.setBoundingBoxArcWidth(10); try { sleep(1000); } catch (InterruptedException e) { // ignored. } } } } }