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/*
* $Id: PdfResources.java,v 1.22 2002/06/20 13:30:25 blowagie Exp $
* $Name: $
*
* Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
*
*
* 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.
*
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) 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.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*
* 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;
/**
* <CODE>PdfResources</CODE> is the PDF Resources-object.
* <P>
* The marking operations for drawing a page are stored in a stream that is the value of the
* <B>Contents</B> 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 <B>Resources</B> 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.<BR>
* 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);
}
}
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