Java tutorial
/* * @(#) $RCSfile: SavePDF.java,v $ $Revision: 1.1 $ $Date: 2003/05/15 16:26:56 $ $Name: TableView1_2 $ * * Center for Computational Genomics and Bioinformatics * Academic Health Center, University of Minnesota * Copyright (c) 2000-2002. The Regents of the University of Minnesota * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. * see: http://www.gnu.org/copyleft/gpl.html * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * * This program 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 General Public License for more details. * */ package edu.umn.genomics.component; import com.itextpdf.awt.DefaultFontMapper; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.pdf.PdfContentByte; import com.itextpdf.text.pdf.PdfTemplate; import com.itextpdf.text.pdf.PdfWriter; import java.awt.*; import java.awt.event.*; import javax.swing.*; import java.io.*; import java.io.IOException; import edu.umn.genomics.table.ExceptionHandler; /** * Produce a Portable Document File from a Java Component, using * the Lowagie iText PDF package: * http://itext.sourceforge.net/ * http://www.lowagie.com/iText/index.html * * @author J Johnson * @version $Revision: 1.1 $ $Date: 2003/05/15 16:26:56 $ $Name: TableView1_2 $ * @since 1.0 */ public class SavePDF { /** * Saves the Component to a Portable Document File, PDF, with the * file location selected using the JFileChooser. * @param c the Component to save as a PDF */ public static boolean savePDF(Component c) throws IOException { System.out.println(""); final int w = c.getWidth() > 0 ? c.getWidth() : 1; final int h = c.getHeight() > 0 ? c.getHeight() : 1; final Dimension dim = c.getPreferredSize(); JFileChooser chooser = new JFileChooser(); JPanel ap = new JPanel(); ap.setLayout(new BoxLayout(ap, BoxLayout.Y_AXIS)); JPanel sp = new JPanel(new GridLayout(0, 1)); sp.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), "Image Size")); final JTextField iwtf = new JTextField("" + w, 4); iwtf.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEtchedBorder(), "width")); final JTextField ihtf = new JTextField("" + h, 4); ihtf.setBorder(BorderFactory.createTitledBorder(BorderFactory.createEmptyBorder(), "height")); JButton curSzBtn = new JButton("As Viewed: " + w + "x" + h); curSzBtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { iwtf.setText("" + w); ihtf.setText("" + h); } }); sp.add(curSzBtn); if (dim != null && dim.getWidth() > 0 && dim.getHeight() > 0) { JButton prefSzBtn = new JButton("As Preferred: " + dim.width + "x" + dim.height); prefSzBtn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { iwtf.setText("" + dim.width); ihtf.setText("" + dim.height); } }); sp.add(prefSzBtn); } sp.add(iwtf); sp.add(ihtf); ap.add(sp); chooser.setAccessory(ap); // ImageFilter filter = new ImageFilter(fmt); // chooser.setFileFilter(filter); int returnVal = chooser.showSaveDialog(c); boolean status = false; if (returnVal == JFileChooser.APPROVE_OPTION) { File file = chooser.getSelectedFile(); //Added the below code to add th .pdf extension if it is not provided by the user String name = file.getAbsolutePath(); if (!(name.substring(name.length() - 4, name.length()).equalsIgnoreCase(".pdf"))) { name = name.concat(".pdf"); file = new File(name); } int iw = w; int ih = h; try { iw = Integer.parseInt(iwtf.getText()); ih = Integer.parseInt(ihtf.getText()); } catch (Exception ex) { ExceptionHandler.popupException("" + ex); } iw = iw > 0 ? iw : w; ih = ih > 0 ? ih : h; if (iw != w || ih != h) { c.setSize(iw, ih); } // step 1: creation of a document-object Document document = new Document(); try { // step 2: // we create a writer that listens to the document // and directs a PDF-stream to a file PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(file)); // step 3: we open the document document.open(); // step 4: we grab the ContentByte and do some stuff with it // we create a fontMapper and read all the fonts in the font directory DefaultFontMapper mapper = new DefaultFontMapper(); // mapper.insertDirectory("c:\\winnt\\fonts"); com.itextpdf.text.Rectangle pgSize = document.getPageSize(); // we create a template and a Graphics2D object that corresponds with it PdfContentByte cb = writer.getDirectContent(); PdfTemplate tp = cb.createTemplate(iw, ih); tp.setWidth(iw); tp.setHeight(ih); Graphics2D g2 = tp.createGraphics(iw, ih, mapper); g2.setStroke(new BasicStroke(.1f)); //cb.setLineWidth(.1f); //cb.stroke(); c.paintAll(g2); g2.dispose(); //cb.addTemplate(tp, 0, 0); float sfx = (float) (pgSize.getWidth() / iw); float sfy = (float) (pgSize.getHeight() / ih); // preserve the aspect ratio float sf = (float) Math.min(sfx, sfy); cb.addTemplate(tp, sf, 0f, 0f, sf, 0f, 0f); } catch (DocumentException de) { ExceptionHandler.popupException("" + de); } catch (IOException ioe) { ExceptionHandler.popupException("" + ioe); } catch (Exception ex) { ExceptionHandler.popupException("" + ex); } // step 5: we close the document document.close(); if (iw != w || ih != h) { c.setSize(w, h); } } return true; } }