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Devin Jankowski
2023-06-21 12:46:23 -04:00
commit c70248a520
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iTechSharp/iTextSharp/text/ImgWMF.cs
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using System;
using System.IO;
using System.Net;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.codec.wmf;
/*
* $Id: ImgWMF.cs,v 1.7 2008/05/13 11:25:11 psoares33 Exp $
*
*
* 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/
*/
namespace iTextSharp.text {
/**
* An ImgWMF is the representation of a windows metafile
* that has to be inserted into the document
*
* @see Element
* @see Image
* @see Gif
* @see Png
*/
/// <summary>
/// An ImgWMF is the representation of a windows metafile
/// that has to be inserted into the document
/// </summary>
public class ImgWMF : Image {
// Constructors
/// <summary>
/// Constructs an ImgWMF-object
/// </summary>
/// <param name="image">a Image</param>
public ImgWMF(Image image) : base(image) {}
/// <summary>
/// Constructs an ImgWMF-object, using an url.
/// </summary>
/// <param name="url">the URL where the image can be found</param>
public ImgWMF(Uri url) : base(url) {
ProcessParameters();
}
/// <summary>
/// Constructs an ImgWMF-object, using a filename.
/// </summary>
/// <param name="filename">a string-representation of the file that contains the image.</param>
public ImgWMF(string filename) : this(Utilities.ToURL(filename)) {}
/// <summary>
/// Constructs an ImgWMF-object from memory.
/// </summary>
/// <param name="img">the memory image</param>
public ImgWMF(byte[] img) : base((Uri)null) {
rawData = img;
originalData = img;
ProcessParameters();
}
/// <summary>
/// This method checks if the image is a valid WMF and processes some parameters.
/// </summary>
private void ProcessParameters() {
type = Element.IMGTEMPLATE;
originalType = ORIGINAL_WMF;
Stream istr = null;
try {
string errorID;
if (rawData == null){
WebRequest w = WebRequest.Create(url);
istr = w.GetResponse().GetResponseStream();
errorID = url.ToString();
}
else{
istr = new MemoryStream(rawData);
errorID = "Byte array";
}
InputMeta im = new InputMeta(istr);
if (im.ReadInt() != unchecked((int)0x9AC6CDD7)) {
throw new BadElementException(errorID + " is not a valid placeable windows metafile.");
}
im.ReadWord();
int left = im.ReadShort();
int top = im.ReadShort();
int right = im.ReadShort();
int bottom = im.ReadShort();
int inch = im.ReadWord();
dpiX = 72;
dpiY = 72;
scaledHeight = (float)(bottom - top) / inch * 72f;
this.Top =scaledHeight;
scaledWidth = (float)(right - left) / inch * 72f;
this.Right = scaledWidth;
}
finally {
if (istr != null) {
istr.Close();
}
plainWidth = this.Width;
plainHeight = this.Height;
}
}
/// <summary>
/// Reads the WMF into a template.
/// </summary>
/// <param name="template">the template to read to</param>
public void ReadWMF(PdfTemplate template) {
TemplateData = template;
template.Width = this.Width;
template.Height = this.Height;
Stream istr = null;
try {
if (rawData == null){
WebRequest w = WebRequest.Create(url);
istr = w.GetResponse().GetResponseStream();
}
else{
istr = new MemoryStream(rawData);
}
MetaDo meta = new MetaDo(istr, template);
meta.ReadAll();
}
finally {
if (istr != null) {
istr.Close();
}
}
}
}
}