Source Code Cross Referenced for PdfFunction.java in  » PDF » pdf-itext » com » lowagie » text » pdf » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » PDF » pdf itext » com.lowagie.text.pdf 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 2002 Paulo Soares
003:         *
004:         * The contents of this file are subject to the Mozilla Public License Version 1.1
005:         * (the "License"); you may not use this file except in compliance with the License.
006:         * You may obtain a copy of the License at http://www.mozilla.org/MPL/
007:         *
008:         * Software distributed under the License is distributed on an "AS IS" basis,
009:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
010:         * for the specific language governing rights and limitations under the License.
011:         *
012:         * The Original Code is 'iText, a free JAVA-PDF library'.
013:         *
014:         * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
015:         * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
016:         * All Rights Reserved.
017:         * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
018:         * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
019:         *
020:         * Contributor(s): all the names of the contributors are added in the source code
021:         * where applicable.
022:         *
023:         * Alternatively, the contents of this file may be used under the terms of the
024:         * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
025:         * provisions of LGPL are applicable instead of those above.  If you wish to
026:         * allow use of your version of this file only under the terms of the LGPL
027:         * License and not to allow others to use your version of this file under
028:         * the MPL, indicate your decision by deleting the provisions above and
029:         * replace them with the notice and other provisions required by the LGPL.
030:         * If you do not delete the provisions above, a recipient may use your version
031:         * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
032:         *
033:         * This library is free software; you can redistribute it and/or modify it
034:         * under the terms of the MPL as stated above or under the terms of the GNU
035:         * Library General Public License as published by the Free Software Foundation;
036:         * either version 2 of the License, or any later version.
037:         *
038:         * This library is distributed in the hope that it will be useful, but WITHOUT
039:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
040:         * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
041:         * details.
042:         *
043:         * If you didn't download this code from the following link, you should check if
044:         * you aren't using an obsolete version:
045:         * http://www.lowagie.com/iText/
046:         */
047:        package com.lowagie.text.pdf;
048:
049:        import java.io.IOException;
050:
051:        import com.lowagie.text.ExceptionConverter;
052:
053:        /** Implements PDF functions.
054:         *
055:         * @author Paulo Soares (psoares@consiste.pt)
056:         */
057:        public class PdfFunction {
058:
059:            protected PdfWriter writer;
060:
061:            protected PdfIndirectReference reference;
062:
063:            protected PdfDictionary dictionary;
064:
065:            /** Creates new PdfFunction */
066:            protected PdfFunction(PdfWriter writer) {
067:                this .writer = writer;
068:            }
069:
070:            PdfIndirectReference getReference() {
071:                try {
072:                    if (reference == null) {
073:                        reference = writer.addToBody(dictionary)
074:                                .getIndirectReference();
075:                    }
076:                } catch (IOException ioe) {
077:                    throw new ExceptionConverter(ioe);
078:                }
079:                return reference;
080:            }
081:
082:            public static PdfFunction type0(PdfWriter writer, float domain[],
083:                    float range[], int size[], int bitsPerSample, int order,
084:                    float encode[], float decode[], byte stream[]) {
085:                PdfFunction func = new PdfFunction(writer);
086:                func.dictionary = new PdfStream(stream);
087:                ((PdfStream) func.dictionary).flateCompress();
088:                func.dictionary.put(PdfName.FUNCTIONTYPE, new PdfNumber(0));
089:                func.dictionary.put(PdfName.DOMAIN, new PdfArray(domain));
090:                func.dictionary.put(PdfName.RANGE, new PdfArray(range));
091:                func.dictionary.put(PdfName.SIZE, new PdfArray(size));
092:                func.dictionary.put(PdfName.BITSPERSAMPLE, new PdfNumber(
093:                        bitsPerSample));
094:                if (order != 1)
095:                    func.dictionary.put(PdfName.ORDER, new PdfNumber(order));
096:                if (encode != null)
097:                    func.dictionary.put(PdfName.ENCODE, new PdfArray(encode));
098:                if (decode != null)
099:                    func.dictionary.put(PdfName.DECODE, new PdfArray(decode));
100:                return func;
101:            }
102:
103:            public static PdfFunction type2(PdfWriter writer, float domain[],
104:                    float range[], float c0[], float c1[], float n) {
105:                PdfFunction func = new PdfFunction(writer);
106:                func.dictionary = new PdfDictionary();
107:                func.dictionary.put(PdfName.FUNCTIONTYPE, new PdfNumber(2));
108:                func.dictionary.put(PdfName.DOMAIN, new PdfArray(domain));
109:                if (range != null)
110:                    func.dictionary.put(PdfName.RANGE, new PdfArray(range));
111:                if (c0 != null)
112:                    func.dictionary.put(PdfName.C0, new PdfArray(c0));
113:                if (c1 != null)
114:                    func.dictionary.put(PdfName.C1, new PdfArray(c1));
115:                func.dictionary.put(PdfName.N, new PdfNumber(n));
116:                return func;
117:            }
118:
119:            public static PdfFunction type3(PdfWriter writer, float domain[],
120:                    float range[], PdfFunction functions[], float bounds[],
121:                    float encode[]) {
122:                PdfFunction func = new PdfFunction(writer);
123:                func.dictionary = new PdfDictionary();
124:                func.dictionary.put(PdfName.FUNCTIONTYPE, new PdfNumber(3));
125:                func.dictionary.put(PdfName.DOMAIN, new PdfArray(domain));
126:                if (range != null)
127:                    func.dictionary.put(PdfName.RANGE, new PdfArray(range));
128:                PdfArray array = new PdfArray();
129:                for (int k = 0; k < functions.length; ++k)
130:                    array.add(functions[k].getReference());
131:                func.dictionary.put(PdfName.FUNCTIONS, array);
132:                func.dictionary.put(PdfName.BOUNDS, new PdfArray(bounds));
133:                func.dictionary.put(PdfName.ENCODE, new PdfArray(encode));
134:                return func;
135:            }
136:
137:            public static PdfFunction type4(PdfWriter writer, float domain[],
138:                    float range[], String postscript) {
139:                byte b[] = new byte[postscript.length()];
140:                for (int k = 0; k < b.length; ++k)
141:                    b[k] = (byte) postscript.charAt(k);
142:                PdfFunction func = new PdfFunction(writer);
143:                func.dictionary = new PdfStream(b);
144:                ((PdfStream) func.dictionary).flateCompress();
145:                func.dictionary.put(PdfName.FUNCTIONTYPE, new PdfNumber(4));
146:                func.dictionary.put(PdfName.DOMAIN, new PdfArray(domain));
147:                func.dictionary.put(PdfName.RANGE, new PdfArray(range));
148:                return func;
149:            }
150:        }
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