/* * Copyright 2002 by 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.lowagie.text.pdf;import com.lowagie.text.ExceptionConverter;import com.lowagie.text.Element;import com.lowagie.text.Rectangle;import java.awt.Color;/** Implements the code interleaved 2 of 5. The text can include * non numeric characters that are printed but do not generate bars. * The default parameters are: * <pre> *x = 0.8f; *n = 2; *font = BaseFont.createFont("Helvetica", "winansi", false); *size = 8; *baseline = size; *barHeight = size * 3; *textAlignment = Element.ALIGN_CENTER; *generateChecksum = false; *checksumText = false; * </pre> * * @author Paulo Soares (psoares@consiste.pt) */public class BarcodeInter25 extends Barcode{    /** The bars to generate the code.     */        static byte BARS[][] =    {        {0,0,1,1,0},        {1,0,0,0,1},        {0,1,0,0,1},        {1,1,0,0,0},        {0,0,1,0,1},        {1,0,1,0,0},        {0,1,1,0,0},        {0,0,0,1,1},        {1,0,0,1,0},        {0,1,0,1,0}    };    /** Creates new BarcodeInter25 */    public BarcodeInter25() {        try {            x = 0.8f;            n = 2;            font = BaseFont.createFont("Helvetica", "winansi", false);            size = 8;            baseline = size;            barHeight = size * 3;            textAlignment = Element.ALIGN_CENTER;            generateChecksum = false;            checksumText = false;        }        catch (Exception e) {            throw new ExceptionConverter(e);        }    }        /** Deletes all the non numeric characters from <CODE>text</CODE>.     * @param text the text     * @return a <CODE>String</CODE> with only numeric characters     */        public static String keepNumbers(String text) {        StringBuffer sb = new StringBuffer();        for (int k = 0; k < text.length(); ++k) {            char c = text.charAt(k);            if (c >= '0' && c <= '9')                sb.append(c);        }        return sb.toString();    }        /** Calculates the checksum.     * @param text the numeric text     * @return the checksum     */        public static char getChecksum(String text) {        int mul = 3;        int total = 0;        for (int k = text.length() - 1; k >= 0; --k) {            int n = text.charAt(k) - '0';            total += mul * n;            mul ^= 2;        }        return (char)(((10 - (total % 10)) % 10) + '0');    }    /** Creates the bars for the barcode.     * @param text the text. It can contain non numeric characters     * @return the barcode     */        public static byte[] getBarsInter25(String text) {        text = keepNumbers(text);        byte bars[] = new byte[text.length() * 5 + 7];        int pb = 0;        bars[pb++] = 0;        bars[pb++] = 0;        bars[pb++] = 0;        bars[pb++] = 0;        int len = text.length() / 2;        for (int k = 0; k < len; ++k) {            int c1 = text.charAt(k * 2) - '0';            int c2 = text.charAt(k * 2 + 1) - '0';            byte b1[] = BARS[c1];            byte b2[] = BARS[c2];            for (int j = 0; j < 5; ++j) {                bars[pb++] = b1[j];                bars[pb++] = b2[j];            }        }        bars[pb++] = 1;        bars[pb++] = 0;        bars[pb++] = 0;        return bars;    }    /** Gets the maximum area that the barcode and the text, if     * any, will occupy. The lower left corner is always (0, 0).     * @return the size the barcode occupies.     */        public Rectangle getBarcodeSize() {        float fontX = 0;        float fontY = 0;        if (font != null) {            if (baseline > 0)                fontY = baseline - font.getFontDescriptor(BaseFont.DESCENT, size);            else                fontY = -baseline + size;            String fullCode = code;            if (generateChecksum && checksumText)                fullCode += getChecksum(fullCode);            fontX = font.getWidthPoint(fullCode, size);        }        String fullCode = keepNumbers(code);        int len = fullCode.length();        if (generateChecksum)            ++len;        float fullWidth = len * (3 * x + 2 * x * n) + (6 + n ) * x;        fullWidth = Math.max(fullWidth, fontX);        float fullHeight = barHeight + fontY;        return new Rectangle(fullWidth, fullHeight);    }        /** Places the barcode in a <CODE>PdfContentByte</CODE>. The     * barcode is always placed at coodinates (0, 0). Use the     * translation matrix to move it elsewhere.<p>     * The bars and text are written in the following colors:<p>     * <P><TABLE BORDER=1>     * <TR>     *    <TH><P><CODE>barColor</CODE></TH>     *    <TH><P><CODE>textColor</CODE></TH>     *    <TH><P>Result</TH>     *    </TR>     * <TR>     *    <TD><P><CODE>null</CODE></TD>     *    <TD><P><CODE>null</CODE></TD>     *    <TD><P>bars and text painted with current fill color</TD>     *    </TR>     * <TR>     *    <TD><P><CODE>barColor</CODE></TD>     *    <TD><P><CODE>null</CODE></TD>     *    <TD><P>bars and text painted with <CODE>barColor</CODE></TD>     *    </TR>     * <TR>     *    <TD><P><CODE>null</CODE></TD>     *    <TD><P><CODE>textColor</CODE></TD>     *    <TD><P>bars painted with current color<br>text painted with <CODE>textColor</CODE></TD>     *    </TR>     * <TR>     *    <TD><P><CODE>barColor</CODE></TD>     *    <TD><P><CODE>textColor</CODE></TD>     *    <TD><P>bars painted with <CODE>barColor</CODE><br>text painted with <CODE>textColor</CODE></TD>     *    </TR>     * </TABLE>     * @param cb the <CODE>PdfContentByte</CODE> where the barcode will be placed     * @param barColor the color of the bars. It can be <CODE>null</CODE>     * @param textColor the color of the text. It can be <CODE>null</CODE>     * @return the dimensions the barcode occupies     */        public Rectangle placeBarcode(PdfContentByte cb, Color barColor, Color textColor) {        String fullCode = code;        float fontX = 0;        if (font != null) {            if (generateChecksum && checksumText)                fullCode += getChecksum(fullCode);            fontX = font.getWidthPoint(fullCode, size);        }        String bCode = keepNumbers(code);        if (generateChecksum)            bCode += getChecksum(bCode);        int len = bCode.length();        float fullWidth = len * (3 * x + 2 * x * n) + (6 + n ) * x;        float barStartX = 0;        float textStartX = 0;        switch (textAlignment) {            case Element.ALIGN_LEFT:                break;            case Element.ALIGN_RIGHT:                if (fontX > fullWidth)                    barStartX = fontX - fullWidth;                else                    textStartX = fullWidth - fontX;                break;            default:                if (fontX > fullWidth)                    barStartX = (fontX - fullWidth) / 2;                else                    textStartX = (fullWidth - fontX) / 2;                break;        }        float barStartY = 0;        float textStartY = 0;        if (font != null) {            if (baseline <= 0)                textStartY = barHeight - baseline;            else {                textStartY = -font.getFontDescriptor(BaseFont.DESCENT, size);                barStartY = textStartY + baseline;            }        }        byte bars[] = getBarsInter25(bCode);        boolean print = true;        if (barColor != null)            cb.setColorFill(barColor);        for (int k = 0; k < bars.length; ++k) {            float w = (bars[k] == 0 ? x : x * n);            if (print)                cb.rectangle(barStartX, barStartY, w, barHeight);            print = !print;            barStartX += w;        }        cb.fill();        if (font != null) {            if (textColor != null)                cb.setColorFill(textColor);            cb.beginText();            cb.setFontAndSize(font, size);            cb.setTextMatrix(textStartX, textStartY);            cb.showText(fullCode);            cb.endText();        }        return getBarcodeSize();    }   }