com.itextpdf.text.ImgWMF Maven / Gradle / Ivy
/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: [email protected]
*/
package com.itextpdf.text;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URL;
import com.itextpdf.text.error_messages.MessageLocalization;
import com.itextpdf.text.pdf.PdfTemplate;
import com.itextpdf.text.pdf.codec.wmf.InputMeta;
import com.itextpdf.text.pdf.codec.wmf.MetaDo;
/**
* An ImgWMF is the representation of a windows metafile
* that has to be inserted into the document
*
* @see Element
* @see Image
*/
public class ImgWMF extends Image {
// Constructors
ImgWMF(Image image) {
super(image);
}
/**
* Constructs an ImgWMF-object, using an url.
*
* @param url the URL 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 ImgWMF-object, using a filename.
*
* @param filename a String-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(Utilities.toURL(filename));
}
/**
* Constructs an ImgWMF-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(MessageLocalization.getComposedMessage("1.is.not.a.valid.placeable.windows.metafile", errorID));
}
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 = getWidth();
plainHeight = getHeight();
}
}
/** 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(getWidth());
template.setHeight(getHeight());
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();
}
}
}
}