com.lowagie.text.pdf.PdfResources Maven / Gradle / Ivy
/*
* $Id: PdfResources.java,v 1.49 2004/12/27 07:09:25 blowagie Exp $
* $Name: $
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
* 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.pdf;
/**
* PdfResources is the PDF Resources-object.
*
* The marking operations for drawing a page are stored in a stream that is the value of the
* Contents key in the Page object's dictionary. Each marking context includes a list
* of the named resources it uses. This resource list is stored as a dictionary that is the
* value of the context's Resources key, and it serves two functions: it enumerates
* the named resources in the contents stream, and it established the mapping from the names
* to the objects used by the marking operations.
* This object is described in the 'Portable Document Format Reference Manual version 1.3'
* section 7.5 (page 195-197).
*
* @see PdfPage
*/
class PdfResources extends PdfDictionary {
// constructor
/**
* Constructs a PDF ResourcesDictionary.
*/
PdfResources() {
super();
}
// methods
void add(PdfName key, PdfDictionary resource) {
if (resource.size() == 0)
return;
PdfDictionary dic = (PdfDictionary)PdfReader.getPdfObject(get(key));
if (dic == null)
put(key, resource);
else
dic.putAll(resource);
}
}