1 /*
2 * $Id: PdfResources.java 3712 2009-02-20 20:11:31Z xlv $
3 *
4 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
5 *
6 * The contents of this file are subject to the Mozilla Public License Version 1.1
7 * (the "License"); you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
9 *
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the License.
13 *
14 * The Original Code is 'iText, a free JAVA-PDF library'.
15 *
16 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
17 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
18 * All Rights Reserved.
19 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
20 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
21 *
22 * Contributor(s): all the names of the contributors are added in the source code
23 * where applicable.
24 *
25 * Alternatively, the contents of this file may be used under the terms of the
26 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
27 * provisions of LGPL are applicable instead of those above. If you wish to
28 * allow use of your version of this file only under the terms of the LGPL
29 * License and not to allow others to use your version of this file under
30 * the MPL, indicate your decision by deleting the provisions above and
31 * replace them with the notice and other provisions required by the LGPL.
32 * If you do not delete the provisions above, a recipient may use your version
33 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
34 *
35 * This library is free software; you can redistribute it and/or modify it
36 * under the terms of the MPL as stated above or under the terms of the GNU
37 * Library General Public License as published by the Free Software Foundation;
38 * either version 2 of the License, or any later version.
39 *
40 * This library is distributed in the hope that it will be useful, but WITHOUT
41 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
42 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
43 * details.
44 *
45 * If you didn't download this code from the following link, you should check if
46 * you aren't using an obsolete version:
47 * http://www.lowagie.com/iText/
48 */
49
50 package com.lowagie.text.pdf;
51
52 /**
53 * <CODE>PdfResources</CODE> is the PDF Resources-object.
54 * <P>
55 * The marking operations for drawing a page are stored in a stream that is the value of the
56 * <B>Contents</B> key in the Page object's dictionary. Each marking context includes a list
57 * of the named resources it uses. This resource list is stored as a dictionary that is the
58 * value of the context's <B>Resources</B> key, and it serves two functions: it enumerates
59 * the named resources in the contents stream, and it established the mapping from the names
60 * to the objects used by the marking operations.<BR>
61 * This object is described in the 'Portable Document Format Reference Manual version 1.3'
62 * section 7.5 (page 195-197).
63 *
64 * @see PdfPage
65 */
66
67 class PdfResources extends PdfDictionary {
68
69 // constructor
70
71 /**
72 * Constructs a PDF ResourcesDictionary.
73 */
74
75 PdfResources() {
76 super();
77 }
78
79 // methods
80
81 void add(PdfName key, PdfDictionary resource) {
82 if (resource.size() == 0)
83 return;
84 PdfDictionary dic = getAsDict(key);
85 if (dic == null)
86 put(key, resource);
87 else
88 dic.putAll(resource);
89 }
90 }