Java tutorial
/* =========================================================== * JFreeChart : a free chart library for the Java(tm) platform * =========================================================== * * (C) Copyright 2000-2009, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, * USA. * * [Java is a trademark or registered trademark of Sun Microsystems, Inc. * in the United States and other countries.] * * ------------------ * PrenotazioniBarChart.java * ------------------ * (C) Copyright 2003-2009, by Object Refinery Limited and Contributors. * * Original Author: David Gilbert (for Object Refinery Limited); * Contributor(s): ; * * Changes * ------- * 09-Mar-2005 : Version 1 (DG); * */ package grafici; import java.awt.BasicStroke; import java.awt.Color; import java.awt.Frame; import org.eclipse.swt.SWT; import org.eclipse.swt.awt.SWT_AWT; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Table; import org.eclipse.swt.widgets.TableItem; 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.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.LineAndShapeRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; /** * A simple demonstration application showing how to create a bar chart. */ public class StatisticheLineChart extends GraficiComposite { /** * */ private static final long serialVersionUID = 1L; private static String titolo; /** * Creates a new demo instance. * * @param title * the frame title. */ public StatisticheLineChart(Table risultati, Composite parent, int style, int variabile, int valore) { super(parent, style); try { this.titolo = risultati.getColumn(variabile).getText().toUpperCase() + " - " + risultati.getColumn(valore).getText().toUpperCase(); GridData gdThis = new GridData(SWT.FILL); gdThis.horizontalAlignment = SWT.FILL; gdThis.verticalAlignment = SWT.FILL; gdThis.grabExcessHorizontalSpace = true; gdThis.grabExcessVerticalSpace = true; this.setLayoutData(gdThis); this.setLayout(new GridLayout(1, false)); Composite cmp = new Composite(this, SWT.FILL | SWT.EMBEDDED); GridData gdCmp = new GridData(SWT.FILL); gdCmp.horizontalAlignment = SWT.FILL; gdCmp.verticalAlignment = SWT.FILL; gdCmp.grabExcessHorizontalSpace = true; gdCmp.grabExcessVerticalSpace = true; cmp.setLayoutData(gdCmp); cmp.setLayout(new GridLayout(1, false)); CategoryDataset dataset = createDataset(risultati, variabile, valore); JFreeChart chart = createChart(dataset, risultati, variabile, valore); ChartPanel chartPanel = new ChartPanel(chart); chartPanel.setFillZoomRectangle(true); // chartPanel.setMouseWheelEnabled(true); // chartPanel.setPreferredSize(new Dimension(1000, 700)); Frame graphFrame = SWT_AWT.new_Frame(cmp); graphFrame.add(chartPanel); graphFrame.pack(); } catch (Exception e) { e.printStackTrace(); } } /** * Returns a sample dataset. * * @return The dataset. */ private static CategoryDataset createDataset(Table results, int variabile, int valore) { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); for (TableItem item : results.getItems()) { dataset.addValue(new Double(item.getText(valore)), item.getText(variabile), results.getColumn(variabile).getText().toUpperCase()); } return dataset; } /** * Creates a sample chart. * * @param dataset * the dataset. * * @return The chart. */ private static JFreeChart createChart(CategoryDataset dataset, Table results, int variabile, int valore) { // create the chart... JFreeChart chart = ChartFactory.createLineChart(titolo, "", // domain axis label results.getColumn(valore).getText().toUpperCase(), // range axis label dataset, // data PlotOrientation.VERTICAL, // orientation true, // include legend true, // tooltips? false // URLs? ); chart.setBackgroundPaint(Color.white); final CategoryPlot plot = (CategoryPlot) chart.getPlot(); plot.setBackgroundPaint(Color.lightGray); plot.setRangeGridlinePaint(Color.white); // customise the range axis... final NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); rangeAxis.setAutoRangeIncludesZero(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. * // **************************************************************************** // customise the renderer... final LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer(); // renderer.setDrawShapes(true); renderer.setSeriesStroke(0, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 10.0f, 6.0f }, 0.0f)); renderer.setSeriesStroke(1, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 6.0f, 6.0f }, 0.0f)); renderer.setSeriesStroke(2, new BasicStroke(2.0f, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND, 1.0f, new float[] { 2.0f, 6.0f }, 0.0f)); // OPTIONAL CUSTOMISATION COMPLETED. return chart; } }