Java tutorial
package ac.kaist.ccs.presentation; /* =========================================================== * 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.] * * ------------------- * LineChartDemo6.java * ------------------- * (C) Copyright 2004, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): -; * * $Id: LineChartDemo6.java,v 1.5 2004/04/26 19:11:55 taqua Exp $ * * Changes * ------- * 27-Jan-2004 : Version 1 (DG); * */ import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.image.BufferedImage; import java.io.File; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.util.List; import javax.imageio.ImageIO; import javax.swing.JButton; import javax.swing.JFileChooser; import javax.swing.JFrame; import javax.swing.JOptionPane; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.NumberTickUnit; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; //import org.jfree.ui.Spacer; import ac.kaist.ccs.domain.CCSStatics; /** * A simple demonstration application showing how to create a line chart using data from an * {@link XYDataset}. * */ public class CCSHubSelectionCoverage extends JFrame { /** * Creates a new demo. * * @param title the frame title. */ String title; public CCSHubSelectionCoverage(final String title, List<Double> coverSourceNum) { super(title); this.title = title; final XYDataset dataset = createDataset(coverSourceNum); final JFreeChart chart = createChart(dataset); JPanel panel = new JPanel(); panel.setLayout(new BorderLayout()); final ChartPanel chartPanel = new ChartPanel(chart); JPanel buttonPanel = new JPanel(); buttonPanel.setLayout(new BorderLayout()); JButton buttonExport = new JButton("Export"); buttonPanel.add("East", buttonExport); buttonExport.addActionListener(new ActionListener() { ChartPanel chartPanel; public ActionListener init(ChartPanel chartPanel) { this.chartPanel = chartPanel; return this; } @Override public void actionPerformed(ActionEvent arg0) { // TODO Auto-generated method stub Dimension size = chartPanel.getSize(); try { //String outPath = textFieldSelectPath.getText(); //String filename = "chromatography.png"; //String path = outPath+"/"+filename; JFileChooser fileChooser = new JFileChooser(); fileChooser.setCurrentDirectory(new File("/Users/mac/Desktop")); fileChooser.setFileFilter(new javax.swing.filechooser.FileNameExtensionFilter("JPEG", "jpeg")); int returnVal = fileChooser.showDialog(new JFrame(), "Open File Path"); if (returnVal == JFileChooser.APPROVE_OPTION) { String inputPath = fileChooser.getSelectedFile().getAbsolutePath(); if (!inputPath.endsWith(".jpeg")) inputPath = inputPath + ".jpeg"; OutputStream os = new FileOutputStream(inputPath); System.out.println(inputPath + "///" + size.width + " " + size.height); BufferedImage chartImage = chartPanel.getChart().createBufferedImage(size.width, size.height, null); ImageIO.write(chartImage, "png", os); os.close(); JOptionPane.showMessageDialog(null, "Chart image was saved in " + inputPath); } } catch (FileNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }.init(chartPanel)); panel.add("Center", chartPanel); panel.add("South", buttonPanel); chartPanel.setPreferredSize(new java.awt.Dimension(700, 500)); setContentPane(panel); } /** * Creates a sample dataset. * * @return a sample dataset. */ private XYDataset createDataset(List<Double> coverSourceNum) { List<Integer> costTypeList = CCSStatics.getCostTypeList(); final XYSeriesCollection dataset = new XYSeriesCollection(); for (Integer costType : costTypeList) { final XYSeries series = new XYSeries(CCSStatics.getCostTypeString(costType)); List<Double> dataPerEachCostType = coverSourceNum; double x = 1.0; for (Double dataSingle : dataPerEachCostType) { series.add(x, dataSingle); x += 1.0; } dataset.addSeries(series); } return dataset; } /** * Creates a chart. * * @param dataset the data for the chart. * * @return a chart. */ private JFreeChart createChart(final XYDataset dataset) { // create the chart... final JFreeChart chart = ChartFactory.createXYLineChart(title, // chart title "Number of Hubs", // x axis label "Percent of CO2 emission source node coverage (%)", // y axis label dataset, // data PlotOrientation.VERTICAL, true, // include legend true, // tooltips false // urls ); // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART... chart.setBackgroundPaint(Color.white); // final StandardLegend legend = (StandardLegend) chart.getLegend(); // legend.setDisplaySeriesShapes(true); // get a reference to the plot for further customisation... final XYPlot plot = chart.getXYPlot(); //final NumberAxis xAxis = (NumberAxis) plot.getRangeAxis(); //xAxis.setTickUnit(new NumberTickUnit(10)); plot.setBackgroundPaint(Color.lightGray); // plot.setAxisOffset(new Spacer(Spacer.ABSOLUTE, 5.0, 5.0, 5.0, 5.0)); plot.setDomainGridlinePaint(Color.white); plot.setRangeGridlinePaint(Color.white); final XYLineAndShapeRenderer renderer = new XYLineAndShapeRenderer(); //renderer.setSeriesLinesVisible(0, false); //renderer.setSeriesShapesVisible(1, false); plot.setRenderer(renderer); // change the auto tick unit selection to integer units only... final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setTickUnit(new NumberTickUnit(10)); // OPTIONAL CUSTOMISATION COMPLETED. return 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) { // final CCSHubSelectionCoverage demo = new CCSHubSelectionCoverage("Line Chart Demo 6"); // demo.pack(); // RefineryUtilities.centerFrameOnScreen(demo); // demo.setVisible(true); } }