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:

⏎ com/itextpdf/text/pdf/parser/LineDashPattern.java

/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2020 iText Group NV
 * Authors: Pavel Mitrofanov, Bruno Lowagie, 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 License for more
 * details. You should have received a copy of the GNU Affero General 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 License.
 *
 * In accordance with Section 7(b) of the GNU Affero General 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.parser;

import com.itextpdf.text.pdf.PdfArray;

/**
 * Represents the line dash pattern. The line dash pattern shall control the pattern
 * of dashes and gaps used to stroke paths. It shall be specified by a dash array and
 * a dash phase.
 *
 * @since 5.5.6
 */
public class LineDashPattern {

    private PdfArray dashArray;
    private float dashPhase;

    private int currentIndex;
    private int elemOrdinalNumber = 1;
    private DashArrayElem currentElem;

    /**
     * Creates new {@link LineDashPattern} object.
     * @param dashArray The dash array. See {@link #getDashArray()}
     * @param dashPhase The dash phase. See {@link #getDashPhase()}
     */
    public LineDashPattern(PdfArray dashArray, float dashPhase) {
        this.dashArray = new PdfArray(dashArray);
        this.dashPhase = dashPhase;
        initFirst(dashPhase);
    }

    /**
     * Getter for the dash array.
     *
     * The dash array’s elements is number that specify the lengths of
     * alternating dashes and gaps; the numbers are nonnegative. The
     * elements are expressed in user space units.
     *
     * @return The dash array.
     */
    public PdfArray getDashArray() {
        return dashArray;
    }

    /**
     * Setter for the dash array. See {@link #getDashArray()}
     * @param dashArray New dash array.
     */
    public void setDashArray(PdfArray dashArray) {
        this.dashArray = dashArray;
    }

    /**
     * Getter for the dash phase.
     *
     * The dash phase shall specify the distance into the dash pattern at which
     * to start the dash. The elements are expressed in user space units.
     *
     * @return The dash phase.
     */
    public float getDashPhase() {
        return dashPhase;
    }

    /**
     * Setter for the dash phase. See {@link #getDashArray()}
     * @param dashPhase New dash phase.
     */
    public void setDashPhase(float dashPhase) {
        this.dashPhase = dashPhase;
    }

    /**
     * Calculates and returns the next element which is either gap or dash.
     * @return The next dash array's element.
     */
    public DashArrayElem next() {
        DashArrayElem ret = currentElem;

        if (dashArray.size() > 0) {
            currentIndex = (currentIndex + 1) % dashArray.size();
            currentElem = new DashArrayElem(dashArray.getAsNumber(currentIndex).floatValue(),
                    isEven(++elemOrdinalNumber));
        }

        return ret;
    }

    /**
     * Resets the dash array so that the {@link #next()} method will start
     * from the beginning of the dash array.
     */
    public void reset() {
        currentIndex = 0;
        elemOrdinalNumber = 1;
        initFirst(dashPhase);
    }

    /**
     * Checks whether the dashed pattern is solid or not. It's solid when the
     * size of a dash array is even and sum of all the units off in the array
     * is 0.<br/>
     * For example: [3 0 4 0 5 0 6 0] (sum is 0), [3 0 4 0 5 1] (sum is 1).
     */
    public boolean isSolid() {
        if (dashArray.size() % 2 != 0) {
            return false;
        }

        float unitsOffSum = 0;

        for (int i = 1; i < dashArray.size(); i += 2) {
            unitsOffSum += dashArray.getAsNumber(i).floatValue();
        }

        return Float.compare(unitsOffSum, 0) == 0;
    }

    private void initFirst(float phase) {
        if (dashArray.size() > 0) {
            while (phase > 0) {
                phase -= dashArray.getAsNumber(currentIndex).floatValue();
                currentIndex = (currentIndex + 1) % dashArray.size();
                elemOrdinalNumber++;
            }

            if (phase < 0) {
                --elemOrdinalNumber;
                --currentIndex;
                currentElem = new DashArrayElem(-phase, isEven(elemOrdinalNumber));
            } else {
                currentElem = new DashArrayElem(dashArray.getAsNumber(currentIndex).floatValue(),
                        isEven(elemOrdinalNumber));
            }
        }
    }

    private boolean isEven(int num) {
        return (num % 2) == 0;
    }

    public class DashArrayElem {

        private float val;
        private boolean isGap;

        public DashArrayElem(float val, boolean isGap) {
            this.val = val;
            this.isGap = isGap;
        }

        public float getVal() {
            return val;
        }

        public void setVal(float val) {
            this.val = val;
        }

        public boolean isGap() {
            return isGap;
        }

        public void setGap(boolean isGap) {
            this.isGap = isGap;
        }
    }
}

⏎ com/itextpdf/text/pdf/parser/LineDashPattern.java

Or download all of them as a single archive file:

File name: itextpdf-5.5.14-fyi.zip
File size: 2163839 bytes
Release date: 2009-10-09
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