com.aowagie.text.pdf.PdfFunction Maven / Gradle / Ivy
/*
* Copyright 2002 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/
*/
package com.aowagie.text.pdf;
import java.io.IOException;
import com.aowagie.text.ExceptionConverter;
/** Implements PDF functions.
*
* @author Paulo Soares ([email protected])
*/
class PdfFunction {
private final PdfWriter writer;
private PdfIndirectReference reference;
private PdfDictionary dictionary;
/** Creates new PdfFunction */
private PdfFunction(final PdfWriter writer) {
this.writer = writer;
}
PdfIndirectReference getReference() {
try {
if (this.reference == null) {
this.reference = this.writer.addToBody(this.dictionary).getIndirectReference();
}
}
catch (final IOException ioe) {
throw new ExceptionConverter(ioe);
}
return this.reference;
}
static PdfFunction type2(final PdfWriter writer, final float domain[], final float range[], final float c0[], final float c1[], final float n) {
final PdfFunction func = new PdfFunction(writer);
func.dictionary = new PdfDictionary();
func.dictionary.put(PdfName.FUNCTIONTYPE, new PdfNumber(2));
func.dictionary.put(PdfName.DOMAIN, new PdfArray(domain));
if (range != null) {
func.dictionary.put(PdfName.RANGE, new PdfArray(range));
}
if (c0 != null) {
func.dictionary.put(PdfName.C0, new PdfArray(c0));
}
if (c1 != null) {
func.dictionary.put(PdfName.C1, new PdfArray(c1));
}
func.dictionary.put(PdfName.N, new PdfNumber(n));
return func;
}
}