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.] * * ------------------ * MouseZoomDemo.java * ------------------ * (C) Copyright 2002-2004, by Viktor Rajewski and Contributors. * * Original Author: Viktor Rajewski; * Contributor(s): David Gilbert (for Object Refinery Limited); * * $Id: MouseZoomDemo.java,v 1.13 2004/06/03 08:52:15 mungady Exp $ * * Changes * ------- * 12-Aug-2002 : Version 1, based on XYSeriesDemo (VR); * 11-Oct-2002 : Renamed XYSeriesMouseZoomDemo --> MouseZoomDemo, altered layout, and fixed errors * reported by Checkstyle (DG); * */ package org.jfree.chart.demo; import java.awt.BorderLayout; import java.awt.event.ItemEvent; import java.awt.event.ItemListener; import javax.swing.JCheckBox; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; import org.jfree.util.Log; import org.jfree.util.PrintStreamLogTarget; /** * A simple demo showing mouse zooming. * * @author Viktor Rajewski */ public class MouseZoomDemo extends ApplicationFrame { /** The chart panel. */ private ChartPanel chartPanel; /** X zoom. */ private JCheckBox xzoom; /** Y zoom. */ private JCheckBox yzoom; /** * A demonstration of mouse zooming. * * @param title the frame title. */ public MouseZoomDemo(final String title) { super(title); final SampleXYDataset data = new SampleXYDataset(); final JFreeChart chart = ChartFactory.createXYLineChart("Mouse Zoom Demo", "X", "Y", data, PlotOrientation.VERTICAL, true, true, false); this.chartPanel = new ChartPanel(chart); // this.chartPanel.setHorizontalZoom(false); // this.chartPanel.setVerticalZoom(false); this.chartPanel.setHorizontalAxisTrace(false); this.chartPanel.setVerticalAxisTrace(false); this.chartPanel.setFillZoomRectangle(true); this.chartPanel.setPreferredSize(new java.awt.Dimension(500, 270)); final JPanel main = new JPanel(new BorderLayout()); final JPanel checkpanel = new JPanel(); this.xzoom = new JCheckBox("Horizontal Mouse Zooming"); this.xzoom.setSelected(false); this.yzoom = new JCheckBox("Vertical Mouse Zooming"); this.yzoom.setSelected(false); final CheckListener clisten = new CheckListener(); this.xzoom.addItemListener(clisten); this.yzoom.addItemListener(clisten); checkpanel.add(this.xzoom); checkpanel.add(this.yzoom); main.add(checkpanel, BorderLayout.SOUTH); main.add(this.chartPanel); setContentPane(main); } // **************************************************************************** // * 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) { Log.getInstance().addTarget(new PrintStreamLogTarget(System.out)); final MouseZoomDemo demo = new MouseZoomDemo("Mouse Zoom Demo"); demo.pack(); RefineryUtilities.centerFrameOnScreen(demo); demo.setVisible(true); } /** * An item listener. * * @author VR */ class CheckListener implements ItemListener { /** * Receives change events. * * @param e the event. */ public void itemStateChanged(final ItemEvent e) { final Object source = e.getItemSelectable(); if (source == xzoom) { if (e.getStateChange() == ItemEvent.DESELECTED) { // chartPanel.setHorizontalZoom(false); chartPanel.setHorizontalAxisTrace(false); chartPanel.repaint(); } else { // chartPanel.setHorizontalZoom(true); chartPanel.setHorizontalAxisTrace(true); } } else if (source == yzoom) { if (e.getStateChange() == ItemEvent.DESELECTED) { // chartPanel.setVerticalZoom(false); chartPanel.setVerticalAxisTrace(false); chartPanel.repaint(); } else { // chartPanel.setVerticalZoom(true); chartPanel.setVerticalAxisTrace(true); } } } } }