iText 5 itextpdf.jar Source Code

itextpdf.jar is a component in iText 5 Java library to provide core functionalities. iText Java library allows you to generate and manage PDF documents.

The Source Code files are provided at iText GitHub site.

You can compile it to generate your JAR file, using pom.xml as the build configuration file.

The source code of itextpdf-5.5.14.jar is provided below:

✍: FYIcenter.com

com/itextpdf/text/pdf/BarcodeInter25.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program 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 Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf;

import com.itextpdf.text.error_messages.MessageLocalization;

import com.itextpdf.text.Element;
import com.itextpdf.text.ExceptionConverter;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.BaseColor;

/** 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
 */
public class BarcodeInter25 extends Barcode{

    /** The bars to generate the code.
     */    
	private static final 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);
        if ((text.length() & 1) != 0)
            throw new IllegalArgumentException(MessageLocalization.getComposedMessage("the.text.length.must.be.even"));
        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(altText != null ? altText : 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 coordinates (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, BaseColor barColor, BaseColor textColor) {
        String fullCode = code;
        float fontX = 0;
        if (font != null) {
            if (generateChecksum && checksumText)
                fullCode += getChecksum(fullCode);
            fontX = font.getWidthPoint(fullCode = altText != null ? altText : 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 - inkSpreading, 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();
    }   

    // AWT related methods (remove this if you port to Android / GAE)
    
    /** Creates a <CODE>java.awt.Image</CODE>. This image only
     * contains the bars without any text.
     * @param foreground the color of the bars
     * @param background the color of the background
     * @return the image
     */    
    public java.awt.Image createAwtImage(java.awt.Color foreground, java.awt.Color background) {
        int f = foreground.getRGB();
        int g = background.getRGB();
        java.awt.Canvas canvas = new java.awt.Canvas();

        String bCode = keepNumbers(code);
        if (generateChecksum)
            bCode += getChecksum(bCode);
        int len = bCode.length();
        int nn = (int)n;
        int fullWidth = len * (3 + 2 * nn) + (6 + nn );
        byte bars[] = getBarsInter25(bCode);
        boolean print = true;
        int ptr = 0;
        int height = (int)barHeight;
        int pix[] = new int[fullWidth * height];
        for (int k = 0; k < bars.length; ++k) {
            int w = (bars[k] == 0 ? 1 : nn);
            int c = g;
            if (print)
                c = f;
            print = !print;
            for (int j = 0; j < w; ++j)
                pix[ptr++] = c;
        }
        for (int k = fullWidth; k < pix.length; k += fullWidth) {
            System.arraycopy(pix, 0, pix, k, fullWidth); 
        }
        java.awt.Image img = canvas.createImage(new java.awt.image.MemoryImageSource(fullWidth, height, pix, 0, fullWidth));
        
        return img;
    }    
}

com/itextpdf/text/pdf/BarcodeInter25.java

 

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2021-07-03, 47899👍, 0💬