/* * $Id: ImgWMF.java,v 1.47 2005/05/04 14:31:10 blowagie Exp $ * $Name: $ * * Copyright 1999, 2000, 2001, 2002 by Paulo Soares. * * The contents of this file are subject to the Mozilla Public License Version 1.1 * (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the License. * * The Original Code is 'iText, a free JAVA-PDF library'. * * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. * All Rights Reserved. * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. * * Contributor(s): all the names of the contributors are added in the source code * where applicable. * * Alternatively, the contents of this file may be used under the terms of the * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the * provisions of LGPL are applicable instead of those above. If you wish to * allow use of your version of this file only under the terms of the LGPL * License and not to allow others to use your version of this file under * the MPL, indicate your decision by deleting the provisions above and * replace them with the notice and other provisions required by the LGPL. * If you do not delete the provisions above, a recipient may use your version * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. * * This library is free software; you can redistribute it and/or modify it * under the terms of the MPL as stated above or under the terms of the GNU * Library General Public License as published by the Free Software Foundation; * either version 2 of the License, or 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 Library general Public License for more * details. * * If you didn't download this code from the following link, you should check if * you aren't using an obsolete version: * http://www.lowagie.com/iText/ */ package com.lowagie.text; import java.io.InputStream; import java.io.IOException; import java.net.MalformedURLException; import java.net.URL; import com.lowagie.text.pdf.codec.wmf.InputMeta; import com.lowagie.text.pdf.codec.wmf.MetaDo; import com.lowagie.text.pdf.*; /** * An <CODE>ImgWMF</CODE> is the representation of a windows metafile * that has to be inserted into the document * * @see Element * @see Image */ public class ImgWMF extends Image implements Element { // Constructors ImgWMF(Image image) { super(image); } /** * Constructs an <CODE>ImgWMF</CODE>-object, using an <VAR>url</VAR>. * * @param url the <CODE>URL</CODE> where the image can be found * @throws BadElementException on error * @throws IOException on error */ public ImgWMF(URL url) throws BadElementException, IOException { super(url); processParameters(); } /** * Constructs an <CODE>ImgWMF</CODE>-object, using a <VAR>filename</VAR>. * * @param filename a <CODE>String</CODE>-representation of the file that contains the image. * @throws BadElementException on error * @throws MalformedURLException on error * @throws IOException on error */ public ImgWMF(String filename) throws BadElementException, MalformedURLException, IOException { this(Image.toURL(filename)); } /** * Constructs an <CODE>ImgWMF</CODE>-object from memory. * * @param img the memory image * @throws BadElementException on error * @throws IOException on error */ public ImgWMF(byte[] img) throws BadElementException, IOException { super((URL)null); rawData = img; originalData = img; processParameters(); } /** * This method checks if the image is a valid WMF and processes some parameters. * @throws BadElementException * @throws IOException */ private void processParameters() throws BadElementException, IOException { type = IMGTEMPLATE; originalType = ORIGINAL_WMF; InputStream is = null; try { String errorID; if (rawData == null){ is = url.openStream(); errorID = url.toString(); } else{ is = new java.io.ByteArrayInputStream(rawData); errorID = "Byte array"; } InputMeta in = new InputMeta(is); if (in.readInt() != 0x9AC6CDD7) { throw new BadElementException(errorID + " is not a valid placeable windows metafile."); } in.readWord(); int left = in.readShort(); int top = in.readShort(); int right = in.readShort(); int bottom = in.readShort(); int inch = in.readWord(); dpiX = 72; dpiY = 72; scaledHeight = (float)(bottom - top) / inch * 72f; setTop(scaledHeight); scaledWidth = (float)(right - left) / inch * 72f; setRight(scaledWidth); } finally { if (is != null) { is.close(); } plainWidth = width(); plainHeight = height(); } } /** Reads the WMF into a template. * @param template the template to read to * @throws IOException on error * @throws DocumentException on error */ public void readWMF(PdfTemplate template) throws IOException, DocumentException { setTemplateData(template); template.setWidth(width()); template.setHeight(height()); InputStream is = null; try { if (rawData == null){ is = url.openStream(); } else{ is = new java.io.ByteArrayInputStream(rawData); } MetaDo meta = new MetaDo(is, template); meta.readAll(); } finally { if (is != null) { is.close(); } } } }