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

The Source Code files are provided together with the JAR file in the binary packge like iText7-Core-7.1.4.zip. You can download it at iText 7 Core Download site.

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

The source code of layout-7.1.4.jar is provided below:

⏎ com/itextpdf/layout/layout/LayoutPosition.java

/*

    This file is part of the iText (R) project.
    Copyright (c) 1998-2018 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.layout.layout;

/**
 * We use a simplified version of CSS positioning.
 * See https://www.webkit.org/blog/117/webcore-rendering-iv-absolutefixed-and-relative-positioning
 */
public class LayoutPosition {
    /**
     * Default positioning by normal rules of block and line layout.
     */
    public static final int STATIC = 1;

    /**
     * Relative positioning is exactly like static positioning except that the left, top, right and bottom properties
     * can be used to apply a translation to the object. Relative positioning is literally nothing more than a paint-time translation.
     * As far as layout is concerned, the object is at its original position.
     */
    public static final int RELATIVE = 2;

    /**
     * Absolute positioned objects are positioned relative to the containing block, which is the nearest enclosing
     * ancestor block with a position other than 'static'.
     */
    public static final int ABSOLUTE = 3;

    /**
     * Fixed positioned objects are positioned relative to the viewport, i.e., the page area of the current page.
     */
    public static final int FIXED = 4;

}

⏎ com/itextpdf/layout/layout/LayoutPosition.java

 

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