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.] * * ---------------- * CompassDemo.java * ---------------- * (C) Copyright 2002-2004, by the Australian Antarctic Division and Contributors. * * Original Author: Bryan Scott (for the Australian Antarctic Division); * Contributor(s): David Gilbert (for Object Refinery Limited); * * $Id: CompassDemo.java,v 1.15 2004/04/26 19:11:53 taqua Exp $ * * Changes * ------- * 25-Sep-2002 : Version 1, contributed by Bryan Scott (DG); * 10-Oct-2002 : Fixed errors reported by Checkstyle (DG); * 27-Mar-2003 : Changed dataset to ValueDataset (DG); * 16-Mar-2004 : Fixed null data display issue (BRS); * */ package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.Color; import java.awt.Dimension; import java.awt.GridBagConstraints; import java.awt.GridBagLayout; import java.awt.GridLayout; import java.awt.Insets; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.beans.PropertyChangeEvent; import java.beans.PropertyChangeListener; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.SwingConstants; import javax.swing.border.TitledBorder; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.CompassPlot; import org.jfree.data.general.DefaultValueDataset; import org.jfree.ui.Spinner; /** * A demo application showing how to use the {@link CompassPlot} class. * * @author Bryan Scott */ public class CompassDemo extends JPanel { /** Whether to output messages to the console **/ public static final boolean DEBUG = true; /** The available needle types. */ public static final String[] NEEDLE_TYPES = { "Arrow", "Line", "Long", "Pin", "Plum", "Pointer", "Ship", "Wind", "Arrow" }; /** Dataset 1. */ private DefaultValueDataset compassData = new DefaultValueDataset(new Double(0.0)); /** Dataset 2. */ private DefaultValueDataset shipData = new DefaultValueDataset(new Double(0.0)); /** The compass plot. */ private CompassPlot compassPlot = new CompassPlot(this.compassData); /** The chart. */ private JFreeChart compassChart = new JFreeChart("Compass Test", JFreeChart.DEFAULT_TITLE_FONT, this.compassPlot, false); /** The chart panel. */ private ChartPanel panelCompass = new ChartPanel(this.compassChart); /** A grid layout. */ private GridLayout gridLayout1 = new GridLayout(); /** A panel. */ private JPanel panelCompassHolder = new JPanel(); /** A border layout. */ private BorderLayout borderLayout = new BorderLayout(); /** A panel. */ private JPanel jPanel12 = new JPanel(); /** A checkbox. */ private JCheckBox windNullCheckBox = new JCheckBox(); /** A checkbox. */ private JCheckBox shipNullCheckBox = new JCheckBox(); // SpinnerNumberModel modelWind = new SpinnerNumberModel(0, -1, 361, 1); // SpinnerNumberModel modelShip = new SpinnerNumberModel(0, -1, 361, 1); // JSpinner spinWind = new JSpinner(modelWind); // JSpinner spinShip = new JSpinner(modelShip); /** The wind spinner control. */ private Spinner spinWind = new Spinner(270); /** The ship spinner control. */ private Spinner spinShip = new Spinner(45); /** A panel. */ private JPanel jPanel1 = new JPanel(); /** A combo box. */ private JComboBox pick1Pointer = new JComboBox(NEEDLE_TYPES); /** A panel. */ private JPanel jPanel2 = new JPanel(); /** A combo box. */ private JComboBox pick2Pointer = new JComboBox(NEEDLE_TYPES); /** A titled border. */ private TitledBorder titledBorder1; /** A titled border. */ private TitledBorder titledBorder2; /** A grid bag layout. */ private GridBagLayout gridBagLayout1 = new GridBagLayout(); /** A grid bag layout. */ private GridBagLayout gridBagLayout2 = new GridBagLayout(); /** A titled border. */ private TitledBorder titledBorder3; /** A grid layout. */ private GridLayout gridLayout2 = new GridLayout(); /** * Default constructor. */ public CompassDemo() { try { //this.compassPlot.addData(this.compassData); this.compassPlot.addData(this.shipData); this.compassPlot.setSeriesNeedle(0, 7); this.compassPlot.setSeriesNeedle(1, 5); this.compassPlot.setSeriesPaint(0, Color.blue); this.compassPlot.setSeriesOutlinePaint(0, Color.blue); this.compassPlot.setSeriesPaint(1, Color.red); this.compassPlot.setSeriesOutlinePaint(1, Color.red); this.pick1Pointer.setSelectedIndex(7); this.pick2Pointer.setSelectedIndex(5); jbInit(); } catch (Exception ex) { ex.printStackTrace(); } } /** * Initialises the user interface. * * @throws Exception if there are any exceptions. */ void jbInit() throws Exception { this.titledBorder1 = new TitledBorder(""); this.titledBorder2 = new TitledBorder(""); this.titledBorder3 = new TitledBorder(""); setLayout(this.gridLayout1); this.panelCompassHolder.setLayout(this.borderLayout); this.windNullCheckBox.setHorizontalTextPosition(SwingConstants.LEADING); this.windNullCheckBox.setText("Null"); this.windNullCheckBox.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(final ActionEvent e) { checkWindNullActionPerformed(e); } }); this.shipNullCheckBox.setHorizontalTextPosition(SwingConstants.LEFT); this.shipNullCheckBox.setText("Null"); this.shipNullCheckBox.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(final ActionEvent e) { checkShipNullActionPerformed(e); } }); this.spinShip.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(final PropertyChangeEvent evt) { if (DEBUG) { System.out.println("compassDemo:spinShipPropertyChange"); } final Spinner spinner = (Spinner) evt.getSource(); if (spinner.isEnabled()) { shipData.setValue(new Double(spinner.getValue())); } } }); this.spinWind.addPropertyChangeListener(new PropertyChangeListener() { public void propertyChange(final PropertyChangeEvent evt) { if (DEBUG) { System.out.println("compassDemo:spinWindPropertyChange"); } final Spinner spinner = (Spinner) evt.getSource(); if (spinner.isEnabled()) { compassData.setValue(new Double(spinner.getValue())); } } }); this.jPanel12.setLayout(this.gridLayout2); this.jPanel2.setBorder(this.titledBorder1); this.jPanel2.setLayout(this.gridBagLayout2); this.jPanel1.setBorder(this.titledBorder2); this.jPanel1.setLayout(this.gridBagLayout1); this.titledBorder1.setTitle("Second Pointer"); this.titledBorder2.setTitle("First Pointer"); this.titledBorder3.setTitle("Plot Options"); this.pick2Pointer.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(final ActionEvent e) { pick2PointerActionPerformed(e); } }); this.pick1Pointer.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(final ActionEvent e) { pick1PointerActionPerformed(e); } }); add(this.panelCompassHolder, null); this.panelCompassHolder.add(this.jPanel12, BorderLayout.SOUTH); this.jPanel12.add(this.jPanel1, null); this.jPanel1.add(this.pick1Pointer, new GridBagConstraints(0, 0, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0)); this.jPanel1.add(this.windNullCheckBox, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0)); this.jPanel1.add(this.spinWind, new GridBagConstraints(2, 0, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0)); this.jPanel12.add(this.jPanel2, null); this.jPanel2.add(this.pick2Pointer, new GridBagConstraints(0, 0, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.HORIZONTAL, new Insets(0, 0, 0, 0), 0, 0)); this.jPanel2.add(this.shipNullCheckBox, new GridBagConstraints(1, 0, 1, 1, 0.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.NONE, new Insets(0, 0, 0, 0), 0, 0)); this.jPanel2.add(this.spinShip, new GridBagConstraints(2, 0, 1, 1, 1.0, 0.0, GridBagConstraints.CENTER, GridBagConstraints.BOTH, new Insets(0, 0, 0, 0), 0, 0)); this.panelCompassHolder.add(this.panelCompass, BorderLayout.CENTER); } /** * Entry point for the demo application. * * @param args ignored. */ public static void main(final String[] args) { final CompassDemo panel = new CompassDemo(); final JFrame frame = new JFrame(); frame.getContentPane().setLayout(new BorderLayout(5, 5)); frame.setDefaultCloseOperation(3); frame.setTitle("Compass Demo"); frame.getContentPane().add(panel, BorderLayout.CENTER); frame.setSize(700, 400); final Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); frame.setLocation((d.width - frame.getSize().width) / 2, (d.height - frame.getSize().height) / 2); frame.setVisible(true); } // **************************************************************************** // * 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. * // **************************************************************************** /** * Updates the data. * * @param value the value. */ public void adjustData(final double value) { final Number val = this.compassData.getValue(); double newVal = value; if (val != null) { newVal += val.doubleValue(); } if (newVal > 360) { newVal = 0; } if (newVal < 0) { newVal = 360; } this.compassData.setValue(new Double(newVal)); } /** * Handles an action event. * * @param e the event. */ void checkWindNullActionPerformed(final ActionEvent e) { if (CompassDemo.DEBUG) { System.out.println("CompassDemo:checkWindNull: " + this.windNullCheckBox.isSelected()); } if (this.windNullCheckBox.isSelected()) { this.compassData.setValue(null); this.spinWind.setEnabled(false); } else { // compassData.setValue((new Double(((Integer)spinWind.getValue()).intValue()))); this.compassData.setValue(new Double(this.spinWind.getValue())); this.spinWind.setEnabled(true); } if (CompassDemo.DEBUG) { System.out.println("CompassDemo:checkWindNull: " + this.compassData.getValue()); } } /** * Handles an action event. * * @param e the event. */ void checkShipNullActionPerformed(final ActionEvent e) { if (CompassDemo.DEBUG) { System.out.println("CompassDemo:checkShipNull: " + this.shipNullCheckBox.isSelected()); } if (this.shipNullCheckBox.isSelected()) { this.shipData.setValue(null); this.spinShip.setEnabled(false); } else { // shipData.setValue((new Double(((Integer)spinShip.getValue()).intValue()))); this.shipData.setValue(new Double(this.spinShip.getValue())); this.spinShip.setEnabled(true); } } /** * Handles an action event. * * @param e the event. */ void pick2PointerActionPerformed(final ActionEvent e) { if (CompassDemo.DEBUG) { System.out.println("compassDemo:pick2PointActionPerformed " + e.getActionCommand() + ","); } this.compassPlot.setSeriesNeedle(1, this.pick2Pointer.getSelectedIndex()); this.compassPlot.setSeriesPaint(1, Color.red); this.compassPlot.setSeriesOutlinePaint(1, Color.red); } /** * Handles an action event. * * @param e the event. */ void pick1PointerActionPerformed(final ActionEvent e) { if (CompassDemo.DEBUG) { System.out.println("compassDemo:pick1PointActionPerformed " + e.getActionCommand() + ","); } this.compassPlot.setSeriesNeedle(0, this.pick1Pointer.getSelectedIndex()); this.compassPlot.setSeriesPaint(0, Color.blue); this.compassPlot.setSeriesOutlinePaint(0, Color.blue); } }