com.itextpdf.text.pdf.PdfResources Maven / Gradle / Ivy
/*
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
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package com.itextpdf.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 = getAsDict(key);
if (dic == null)
put(key, resource);
else
dic.putAll(resource);
}
}