Java tutorial
/* * PatientView * * Copyright (c) Worth Solutions Limited 2004-2013 * * This file is part of PatientView. * * PatientView 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 3 of the License, * or (at your option) any later version. * PatientView 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. * You should have received a copy of the GNU General Public License along with PatientView in a file * titled COPYING. If not, see <http://www.gnu.org/licenses/>. * * @package PatientView * @link http://www.patientview.org * @author PatientView <info@patientview.org> * @copyright Copyright (c) 2004-2013, Worth Solutions Limited * @license http://www.gnu.org/licenses/gpl-3.0.html The GNU General Public License V3.0 */ package org.patientview.radar.service.impl; import com.itextpdf.text.BaseColor; import com.itextpdf.text.Document; import com.itextpdf.text.Element; import com.itextpdf.text.Font; import com.itextpdf.text.PageSize; import com.itextpdf.text.Phrase; import com.itextpdf.text.pdf.PdfPCell; import com.itextpdf.text.pdf.PdfPTable; import com.itextpdf.text.pdf.PdfWriter; import org.patientview.radar.model.DocumentData; import org.patientview.radar.service.DocumentDataBuilder; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.io.ByteArrayOutputStream; import java.util.List; public class PdfDocumentDataBuilder implements DocumentDataBuilder { private static final Logger LOGGER = LoggerFactory.getLogger(PdfDocumentDataBuilder.class); public static final Font.FontFamily BASE_FONT = Font.FontFamily.HELVETICA; public static final BaseColor BASE_FONT_COLOR = BaseColor.BLACK; public static final int BASE_FONT_SIZE = 7; public byte[] build(DocumentData documentData) { ByteArrayOutputStream outputStream = new ByteArrayOutputStream(); try { Document document = new Document(PageSize.A4, 0, 0, 20, 20); PdfWriter writer = PdfWriter.getInstance(document, outputStream); writer.setFullCompression(); writer.setLinearPageMode(); document.open(); PdfPTable table = new PdfPTable(documentData.getHeaders().size()); table.setWidthPercentage(90); // create the header cells for (String s : documentData.getHeaders()) { table.addCell(createHeadingCell(s)); } // create the data row cells for (List<String> l : documentData.getRows()) { for (String s : l) { table.addCell(createRowCell(s)); } } document.add(table); document.close(); } catch (Exception e) { LOGGER.error("Could not build pdf " + e.getMessage()); } return outputStream.toByteArray(); } private PdfPCell createHeadingCell(String text) { PdfPCell cell = createBaseCell(text, new Font(BASE_FONT, BASE_FONT_SIZE, Font.BOLD)); cell.setBackgroundColor(new BaseColor(0xDE, 0xDE, 0xDE)); return cell; } private PdfPCell createRowCell(String text) { return createBaseCell(text, new Font(BASE_FONT, BASE_FONT_SIZE)); } private PdfPCell createBaseCell(String text, Font font) { PdfPCell cell = new PdfPCell(new Phrase(text, font)); cell.setHorizontalAlignment(Element.ALIGN_LEFT); cell.setPadding(4f); return cell; } }