001/*
002 * $Id: PdfSpotColor.java 4784 2011-03-15 08:33:00Z blowagie $
003 *
004 * This file is part of the iText (R) project.
005 * Copyright (c) 1998-2011 1T3XT BVBA
006 * Authors: Bruno Lowagie, Paulo Soares, et al.
007 *
008 * This program is free software; you can redistribute it and/or modify
009 * it under the terms of the GNU Affero General Public License version 3
010 * as published by the Free Software Foundation with the addition of the
011 * following permission added to Section 15 as permitted in Section 7(a):
012 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY 1T3XT,
013 * 1T3XT DISCLAIMS THE WARRANTY OF NON INFRINGEMENT OF THIRD PARTY RIGHTS.
014 *
015 * This program is distributed in the hope that it will be useful, but
016 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
017 * or FITNESS FOR A PARTICULAR PURPOSE.
018 * See the GNU Affero General Public License for more details.
019 * You should have received a copy of the GNU Affero General Public License
020 * along with this program; if not, see http://www.gnu.org/licenses or write to
021 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
022 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
023 * http://itextpdf.com/terms-of-use/
024 *
025 * The interactive user interfaces in modified source and object code versions
026 * of this program must display Appropriate Legal Notices, as required under
027 * Section 5 of the GNU Affero General Public License.
028 *
029 * In accordance with Section 7(b) of the GNU Affero General Public License,
030 * a covered work must retain the producer line in every PDF that is created
031 * or manipulated using iText.
032 *
033 * You can be released from the requirements of the license by purchasing
034 * a commercial license. Buying such a license is mandatory as soon as you
035 * develop commercial activities involving the iText software without
036 * disclosing the source code of your own applications.
037 * These activities include: offering paid services to customers as an ASP,
038 * serving PDFs on the fly in a web application, shipping iText with a closed
039 * source product.
040 *
041 * For more information, please contact iText Software Corp. at this
042 * address: sales@itextpdf.com
043 */
044package com.itextpdf.text.pdf;
045
046import com.itextpdf.text.BaseColor;
047import com.itextpdf.text.error_messages.MessageLocalization;
048
049/**
050 * A <CODE>PdfSpotColor</CODE> defines a ColorSpace
051 *
052 * @see         PdfDictionary
053 */
054
055public class PdfSpotColor{
056    
057/**     The color name */
058    public PdfName name;
059    
060/** The alternative color space */
061    public BaseColor altcs;
062    // constructors
063    
064    /**
065     * Constructs a new <CODE>PdfSpotColor</CODE>.
066     *
067     * @param           name            a String value
068     * @param           altcs           an alternative colorspace value
069     */
070    
071    public PdfSpotColor(String name, BaseColor altcs) {
072        this.name = new PdfName(name);
073        this.altcs = altcs;
074    }
075    
076    /**
077     * Gets the alternative ColorSpace.
078     * @return a BaseColor
079     */
080    public BaseColor getAlternativeCS() {
081        return altcs;
082    }
083    
084    protected PdfObject getSpotObject(PdfWriter writer) {
085        PdfArray array = new PdfArray(PdfName.SEPARATION);
086        array.add(name);
087        PdfFunction func = null;
088        if (altcs instanceof ExtendedColor) {
089            int type = ((ExtendedColor)altcs).type;
090            switch (type) {
091                case ExtendedColor.TYPE_GRAY:
092                    array.add(PdfName.DEVICEGRAY);
093                    func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{0}, new float[]{((GrayColor)altcs).getGray()}, 1);
094                    break;
095                case ExtendedColor.TYPE_CMYK:
096                    array.add(PdfName.DEVICECMYK);
097                    CMYKColor cmyk = (CMYKColor)altcs;
098                    func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{0, 0, 0, 0},
099                        new float[]{cmyk.getCyan(), cmyk.getMagenta(), cmyk.getYellow(), cmyk.getBlack()}, 1);
100                    break;
101                default:
102                    throw new RuntimeException(MessageLocalization.getComposedMessage("only.rgb.gray.and.cmyk.are.supported.as.alternative.color.spaces"));
103            }
104        }
105        else {
106            array.add(PdfName.DEVICERGB);
107            func = PdfFunction.type2(writer, new float[]{0, 1}, null, new float[]{1, 1, 1},
108                new float[]{(float)altcs.getRed() / 255, (float)altcs.getGreen() / 255, (float)altcs.getBlue() / 255}, 1);
109        }
110        array.add(func.getReference());
111        return array;
112    }
113}