001/*
002 * $Id: BarcodeEANSUPP.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;
045import com.itextpdf.text.error_messages.MessageLocalization;
046
047import com.itextpdf.text.Rectangle;
048import com.itextpdf.text.BaseColor;
049
050/** This class takes 2 barcodes, an EAN/UPC and a supplemental
051 * and creates a single barcode with both combined in the
052 * expected layout. The UPC/EAN should have a positive text
053  * baseline and the supplemental a negative one (in the supplemental
054 * the text is on the top of the barcode.<p>
055 * The default parameters are:
056 * <pre>
057 *n = 8; // horizontal distance between the two barcodes
058 * </pre>
059 *
060 * @author Paulo Soares
061 */
062public class BarcodeEANSUPP extends Barcode{
063    
064    /** The barcode with the EAN/UPC.
065     */    
066    protected Barcode ean;
067    /** The barcode with the supplemental.
068     */    
069    protected Barcode supp;
070    
071    /** Creates new combined barcode.
072     * @param ean the EAN/UPC barcode
073     * @param supp the supplemental barcode
074     */
075    public BarcodeEANSUPP(Barcode ean, Barcode supp) {
076        n = 8; // horizontal distance between the two barcodes
077        this.ean = ean;
078        this.supp = supp;
079    }
080    
081    /** Gets the maximum area that the barcode and the text, if
082     * any, will occupy. The lower left corner is always (0, 0).
083     * @return the size the barcode occupies.
084     */
085    public Rectangle getBarcodeSize() {
086        Rectangle rect = ean.getBarcodeSize();
087        rect.setRight(rect.getWidth() + supp.getBarcodeSize().getWidth() + n);
088        return rect;
089    }
090    
091    /** Places the barcode in a <CODE>PdfContentByte</CODE>. The
092     * barcode is always placed at coordinates (0, 0). Use the
093     * translation matrix to move it elsewhere.<p>
094     * The bars and text are written in the following colors:<p>
095     * <P><TABLE BORDER=1>
096     * <TR>
097     *   <TH><P><CODE>barColor</CODE></TH>
098     *   <TH><P><CODE>textColor</CODE></TH>
099     *   <TH><P>Result</TH>
100     *   </TR>
101     * <TR>
102     *   <TD><P><CODE>null</CODE></TD>
103     *   <TD><P><CODE>null</CODE></TD>
104     *   <TD><P>bars and text painted with current fill color</TD>
105     *   </TR>
106     * <TR>
107     *   <TD><P><CODE>barColor</CODE></TD>
108     *   <TD><P><CODE>null</CODE></TD>
109     *   <TD><P>bars and text painted with <CODE>barColor</CODE></TD>
110     *   </TR>
111     * <TR>
112     *   <TD><P><CODE>null</CODE></TD>
113     *   <TD><P><CODE>textColor</CODE></TD>
114     *   <TD><P>bars painted with current color<br>text painted with <CODE>textColor</CODE></TD>
115     *   </TR>
116     * <TR>
117     *   <TD><P><CODE>barColor</CODE></TD>
118     *   <TD><P><CODE>textColor</CODE></TD>
119     *   <TD><P>bars painted with <CODE>barColor</CODE><br>text painted with <CODE>textColor</CODE></TD>
120     *   </TR>
121     * </TABLE>
122     * @param cb the <CODE>PdfContentByte</CODE> where the barcode will be placed
123     * @param barColor the color of the bars. It can be <CODE>null</CODE>
124     * @param textColor the color of the text. It can be <CODE>null</CODE>
125     * @return the dimensions the barcode occupies
126     */
127    public Rectangle placeBarcode(PdfContentByte cb, BaseColor barColor, BaseColor textColor) {
128        if (supp.getFont() != null)
129            supp.setBarHeight(ean.getBarHeight() + supp.getBaseline() - supp.getFont().getFontDescriptor(BaseFont.CAPHEIGHT, supp.getSize()));
130        else
131            supp.setBarHeight(ean.getBarHeight());
132        Rectangle eanR = ean.getBarcodeSize();
133        cb.saveState();
134        ean.placeBarcode(cb, barColor, textColor);
135        cb.restoreState();
136        cb.saveState();
137        cb.concatCTM(1, 0, 0, 1, eanR.getWidth() + n, eanR.getHeight() - ean.getBarHeight());
138        supp.placeBarcode(cb, barColor, textColor);
139        cb.restoreState();
140        return getBarcodeSize();
141    }
142    
143    /** Creates a <CODE>java.awt.Image</CODE>. This image only
144     * contains the bars without any text.
145     * @param foreground the color of the bars
146     * @param background the color of the background
147     * @return the image
148     */    
149    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
150        throw new UnsupportedOperationException(MessageLocalization.getComposedMessage("the.two.barcodes.must.be.composed.externally"));
151    }    
152}