Java tutorial
/* * Copyright 2008-2014 by Emeric Vernat * * This file is part of Java Melody. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package net.bull.javamelody.swing.print; import java.io.IOException; import java.io.OutputStream; import java.util.Date; import javax.swing.Icon; import javax.swing.ImageIcon; import javax.swing.table.TableColumnModel; import net.bull.javamelody.I18NAdapter; import net.bull.javamelody.swing.table.MBasicTable; import com.lowagie.text.BadElementException; import com.lowagie.text.DocWriter; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Element; import com.lowagie.text.Font; import com.lowagie.text.FontFactory; import com.lowagie.text.HeaderFooter; import com.lowagie.text.PageSize; import com.lowagie.text.Phrase; import com.lowagie.text.Rectangle; import com.lowagie.text.Table; import com.lowagie.text.pdf.PdfWriter; /** * Objet d'impression/export pour Pdf (portrait ou paysage) en utilisant iText. * * @author Emeric Vernat */ public class MPdfWriter extends MPrinter { /** * Icne Adobe Reader. */ public static final ImageIcon ADOBE_READER_ICON = new ImageIcon( MPdfWriter.class.getResource("/icons/adobe acrobat.png")); private final boolean landscape; /** * Objet d'impression/export pour Pdf paysage. * * @author Emeric Vernat */ public static class LandscapePdfWriter extends MPdfWriter { /** Constructeur. */ public LandscapePdfWriter() { super(true); } } /** * Constructeur. */ public MPdfWriter() { this(false); } /** * Constructeur. * * @param myLandscape * boolean */ public MPdfWriter(final boolean myLandscape) { super(); this.landscape = myLandscape; } /** * Retourne un boolen selon que l'export est en paysage ou en portrait. * * @return boolean */ public boolean isLandscape() { return landscape; } /** * Lance l'impression (Mthode abstraite assurant le polymorphisme des instances.). * * @param table * MBasicTable * @param out * OutputStream * @throws IOException * Erreur disque */ @Override public void print(final MBasicTable table, final OutputStream out) throws IOException { writePdf(table, out); } /** * Mthode abstraite : les instances doivent renvoyer l'extension du fichier export. * * @return String */ @Override public String getFileExtension() { return "pdf"; } /** * Mthode abstraite : les instances doivent renvoyer l'icne reprsentant le type. * * @return Icon */ @Override public Icon getIcon() { return ADOBE_READER_ICON; } /** * Mthode abstraite : les instances doivent renvoyer leur nom. * * @return String */ @Override public String getName() { return I18NAdapter.getString(landscape ? "export_pdf_landscape" : "export_pdf"); } /** * Ecrit le pdf. * * @param table * MBasicTable * @param out * OutputStream * @throws IOException * e */ protected void writePdf(final MBasicTable table, final OutputStream out) throws IOException { try { // step 1: creation of a document-object final Rectangle pageSize = landscape ? PageSize.A4.rotate() : PageSize.A4; final Document document = new Document(pageSize, 50, 50, 50, 50); // step 2: we create a writer that listens to the document and directs a PDF-stream to out createWriter(table, document, out); // we add some meta information to the document, and we open it document.addAuthor(System.getProperty("user.name")); document.addCreator("JavaMelody"); final String title = buildTitle(table); if (title != null) { document.addTitle(title); } document.open(); // ouvre la bote de dialogue Imprimer de Adobe Reader // if (writer instanceof PdfWriter) { // ((PdfWriter) writer).addJavaScript("this.print(true);", false); // } // table final Table datatable = new Table(table.getColumnCount()); datatable.setCellsFitPage(true); datatable.setPadding(4); datatable.setSpacing(0); // headers renderHeaders(table, datatable); // data rows renderList(table, datatable); document.add(datatable); // we close the document document.close(); } catch (final DocumentException e) { // on ne peut dclarer d'exception autre que IOException en throws throw new IOException(e); } } /** * We create a writer that listens to the document and directs a PDF-stream to out * * @param table * MBasicTable * @param document * Document * @param out * OutputStream * @return DocWriter * @throws DocumentException * e */ protected DocWriter createWriter(final MBasicTable table, final Document document, final OutputStream out) throws DocumentException { final PdfWriter writer = PdfWriter.getInstance(document, out); // writer.setViewerPreferences(PdfWriter.PageLayoutTwoColumnLeft); // title if (table.getName() != null) { final HeaderFooter header = new HeaderFooter(new Phrase(table.getName()), false); header.setAlignment(Element.ALIGN_LEFT); header.setBorder(Rectangle.NO_BORDER); document.setHeader(header); document.addTitle(table.getName()); } // simple page numbers : x // HeaderFooter footer = new HeaderFooter(new Phrase(), true); // footer.setAlignment(Element.ALIGN_RIGHT); // footer.setBorder(Rectangle.TOP); // document.setFooter(footer); // add the event handler for advanced page numbers : x/y writer.setPageEvent(new AdvancedPageNumberEvents()); return writer; } /** * Effectue le rendu des headers. * * @param table * MBasicTable * @param datatable * Table * @throws BadElementException * e */ protected void renderHeaders(final MBasicTable table, final Table datatable) throws BadElementException { final int columnCount = table.getColumnCount(); final TableColumnModel columnModel = table.getColumnModel(); // size of columns float totalWidth = 0; for (int i = 0; i < columnCount; i++) { totalWidth += columnModel.getColumn(i).getWidth(); } final float[] headerwidths = new float[columnCount]; for (int i = 0; i < columnCount; i++) { headerwidths[i] = 100f * columnModel.getColumn(i).getWidth() / totalWidth; } datatable.setWidths(headerwidths); datatable.setWidth(100f); // table header final com.lowagie.text.Font font = FontFactory.getFont(FontFactory.HELVETICA, 12, Font.BOLD); datatable.getDefaultCell().setBorderWidth(2); datatable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER); // datatable.setDefaultCellGrayFill(0.75f); String text; Object value; for (int i = 0; i < columnCount; i++) { value = columnModel.getColumn(i).getHeaderValue(); text = value != null ? value.toString() : ""; datatable.addCell(new Phrase(text, font)); } // end of the table header datatable.endHeaders(); } /** * Effectue le rendu de la liste. * * @param table * MBasicTable * @param datatable * Table * @throws BadElementException * e */ protected void renderList(final MBasicTable table, final Table datatable) throws BadElementException { final int columnCount = table.getColumnCount(); final int rowCount = table.getRowCount(); // data rows final Font font = FontFactory.getFont(FontFactory.HELVETICA, 10, Font.NORMAL); datatable.getDefaultCell().setBorderWidth(1); datatable.getDefaultCell().setHorizontalAlignment(Element.ALIGN_LEFT); // datatable.setDefaultCellGrayFill(0); Object value; String text; int horizontalAlignment; for (int k = 0; k < rowCount; k++) { for (int i = 0; i < columnCount; i++) { value = getValueAt(table, k, i); if (value instanceof Number || value instanceof Date) { horizontalAlignment = Element.ALIGN_RIGHT; } else if (value instanceof Boolean) { horizontalAlignment = Element.ALIGN_CENTER; } else { horizontalAlignment = Element.ALIGN_LEFT; } datatable.getDefaultCell().setHorizontalAlignment(horizontalAlignment); text = getTextAt(table, k, i); datatable.addCell(new Phrase(8, text != null ? text : "", font)); } } } }