Java tutorial
/* * JasperReports - Free Java Reporting Library. * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved. * http://www.jaspersoft.com * * Unless you have purchased a commercial license agreement from Jaspersoft, * the following license terms apply: * * This program is part of JasperReports. * * JasperReports 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 3 of the License, or * (at your option) any later version. * * JasperReports 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 JasperReports. If not, see <http://www.gnu.org/licenses/>. */ package net.sf.jasperreports.view; import java.awt.BorderLayout; import java.awt.Toolkit; import java.io.InputStream; import net.sf.jasperreports.engine.DefaultJasperReportsContext; import net.sf.jasperreports.engine.JRConstants; import net.sf.jasperreports.engine.JRException; import net.sf.jasperreports.engine.JRReport; import net.sf.jasperreports.engine.JasperReportsContext; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; /** * This class can be used at design time to preview the report * templates. It was included in the main library as a development tool in order to make up * for the missing visual designer. * <p> * The class is a simple * Swing-based Java application that can load and display a report template either in its raw * JRXML form or in its compiled form. Even though it is not a complex GUI application and * lacks advanced functionality like dragging and dropping visual report elements, it is a * very helpful tool. All the supplied JasperReports samples were initially created using this design * viewer. * </p><p> * All the supplied samples already have Ant tasks in their <code>build.xml</code> files that will launch * this design viewer to display the report templates. * There are two Ant tasks for each sample report: <code>viewDesign</code> and <code>viewDesignXML</code>. The * first one loads the compiled report template that is normally found in the <code>*.jasper</code> file. * The second one loads the JRXML report template, which is more useful since you can * edit the JRXML file and click the Reload button to immediately see the modification on * the screen. * </p> * @author Teodor Danciu (teodord@users.sourceforge.net) */ public class JasperDesignViewer extends javax.swing.JFrame { private static final Log log = LogFactory.getLog(JasperDesignViewer.class); private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID; /** * @see #JasperDesignViewer(JasperReportsContext, String, boolean) */ public JasperDesignViewer(String sourceFile, boolean isXML) throws JRException { this(DefaultJasperReportsContext.getInstance(), sourceFile, isXML); } /** * @see #JasperDesignViewer(JasperReportsContext, InputStream, boolean) */ public JasperDesignViewer(InputStream is, boolean isXML) throws JRException { this(DefaultJasperReportsContext.getInstance(), is, isXML); } /** * @see #JasperDesignViewer(JasperReportsContext, JRReport) */ public JasperDesignViewer(JRReport report) throws JRException { this(DefaultJasperReportsContext.getInstance(), report); } /** * */ public JasperDesignViewer(JasperReportsContext jasperReportsContext, String sourceFile, boolean isXML) throws JRException { initComponents(); net.sf.jasperreports.swing.JRDesignViewer viewer = new net.sf.jasperreports.swing.JRDesignViewer( jasperReportsContext, sourceFile, isXML); this.pnlMain.add(viewer, BorderLayout.CENTER); } /** * */ public JasperDesignViewer(JasperReportsContext jasperReportsContext, InputStream is, boolean isXML) throws JRException { initComponents(); net.sf.jasperreports.swing.JRDesignViewer viewer = new net.sf.jasperreports.swing.JRDesignViewer( jasperReportsContext, is, isXML); this.pnlMain.add(viewer, BorderLayout.CENTER); } /** * */ public JasperDesignViewer(JasperReportsContext jasperReportsContext, JRReport report) throws JRException { initComponents(); net.sf.jasperreports.swing.JRDesignViewer viewer = new net.sf.jasperreports.swing.JRDesignViewer( jasperReportsContext, report); this.pnlMain.add(viewer, BorderLayout.CENTER); } /** This method is called from within the constructor to * initialize the form. * WARNING: Do NOT modify this code. The content of this method is * always regenerated by the Form Editor. */ private void initComponents() {//GEN-BEGIN:initComponents pnlMain = new javax.swing.JPanel(); setTitle("JasperDesignViewer"); setIconImage( new javax.swing.ImageIcon(getClass().getResource("/net/sf/jasperreports/view/images/jricon.GIF")) .getImage()); addWindowListener(new java.awt.event.WindowAdapter() { @Override public void windowClosing(java.awt.event.WindowEvent evt) { exitForm(); } }); pnlMain.setLayout(new java.awt.BorderLayout()); getContentPane().add(pnlMain, java.awt.BorderLayout.CENTER); pack(); Toolkit toolkit = java.awt.Toolkit.getDefaultToolkit(); java.awt.Dimension screenSize = toolkit.getScreenSize(); int screenResolution = toolkit.getScreenResolution(); float zoom = ((float) screenResolution) / net.sf.jasperreports.swing.JRViewerPanel.REPORT_RESOLUTION; int height = (int) (550 * zoom); if (height > screenSize.getHeight()) { height = (int) screenSize.getHeight(); } int width = (int) (750 * zoom); if (width > screenSize.getWidth()) { width = (int) screenSize.getWidth(); } java.awt.Dimension dimension = new java.awt.Dimension(width, height); setSize(dimension); setLocation((screenSize.width - width) / 2, (screenSize.height - height) / 2); }//GEN-END:initComponents /** Exit the Application */ void exitForm() {//GEN-FIRST:event_exitForm System.exit(0); }//GEN-LAST:event_exitForm /** * @param args the command line arguments */ public static void main(String args[]) { String fileName = null; boolean isXMLFile = false; for (int i = 0; i < args.length; i++) { if (args[i].startsWith("-XML")) { isXMLFile = true; } else if (args[i].startsWith("-F")) { fileName = args[i].substring(2); } else { fileName = args[i]; } } if (fileName == null) { usage(); return; } if (!isXMLFile && fileName.endsWith(".jrxml")) { isXMLFile = true; } try { viewReportDesign(fileName, isXMLFile); } catch (JRException e) { if (log.isErrorEnabled()) { log.error("Error viewing report design.", e); } System.exit(1); } } /** * */ private static void usage() { System.out.println("JasperDesignViewer usage:"); System.out.println("\tjava JasperDesignViewer [-XML] file"); } /** * @see #viewReportDesign(JasperReportsContext, String, boolean) */ public static void viewReportDesign(String sourceFile, boolean isXML) throws JRException { viewReportDesign(DefaultJasperReportsContext.getInstance(), sourceFile, isXML); } /** * @see #viewReportDesign(JasperReportsContext, InputStream, boolean) */ public static void viewReportDesign(InputStream is, boolean isXML) throws JRException { viewReportDesign(DefaultJasperReportsContext.getInstance(), is, isXML); } /** * @see #viewReportDesign(JasperReportsContext, JRReport) */ public static void viewReportDesign(JRReport report) throws JRException { viewReportDesign(DefaultJasperReportsContext.getInstance(), report); } /** * */ public static void viewReportDesign(JasperReportsContext jasperReportsContext, String sourceFile, boolean isXML) throws JRException { JasperDesignViewer jasperDesignViewer = new JasperDesignViewer(jasperReportsContext, sourceFile, isXML); jasperDesignViewer.setVisible(true); } /** * */ public static void viewReportDesign(JasperReportsContext jasperReportsContext, InputStream is, boolean isXML) throws JRException { JasperDesignViewer jasperDesignViewer = new JasperDesignViewer(jasperReportsContext, is, isXML); jasperDesignViewer.setVisible(true); } /** * */ public static void viewReportDesign(JasperReportsContext jasperReportsContext, JRReport report) throws JRException { JasperDesignViewer jasperDesignViewer = new JasperDesignViewer(jasperReportsContext, report); jasperDesignViewer.setVisible(true); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JPanel pnlMain; // End of variables declaration//GEN-END:variables }