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/internal/PdfViewerPreferencesImp.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.internal;

import com.itextpdf.text.pdf.PdfArray;
import com.itextpdf.text.pdf.PdfBoolean;
import com.itextpdf.text.pdf.PdfDictionary;
import com.itextpdf.text.pdf.PdfName;
import com.itextpdf.text.pdf.PdfNumber;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;
import com.itextpdf.text.pdf.interfaces.PdfViewerPreferences;

/**
 * Stores the information concerning viewer preferences,
 * and contains the business logic that allows you to set viewer preferences.
 */

public class PdfViewerPreferencesImp implements PdfViewerPreferences {
	public static final PdfName[] VIEWER_PREFERENCES = {
			PdfName.HIDETOOLBAR,			// 0
			PdfName.HIDEMENUBAR,            // 1
			PdfName.HIDEWINDOWUI,           // 2
			PdfName.FITWINDOW,              // 3
			PdfName.CENTERWINDOW,			// 4
			PdfName.DISPLAYDOCTITLE,		// 5
			PdfName.NONFULLSCREENPAGEMODE,	// 6
			PdfName.DIRECTION,				// 7
			PdfName.VIEWAREA,				// 8
			PdfName.VIEWCLIP,				// 9
			PdfName.PRINTAREA,				// 10
			PdfName.PRINTCLIP,				// 11
			PdfName.PRINTSCALING,			// 12
			PdfName.DUPLEX,					// 13
			PdfName.PICKTRAYBYPDFSIZE,		// 14
			PdfName.PRINTPAGERANGE,			// 15
			PdfName.NUMCOPIES				// 16
		};


    /** A series of viewer preferences. */
    public static final PdfName NONFULLSCREENPAGEMODE_PREFERENCES[] = {
    	PdfName.USENONE, PdfName.USEOUTLINES, PdfName.USETHUMBS, PdfName.USEOC
    };
    /** A series of viewer preferences. */
    public static final PdfName DIRECTION_PREFERENCES[] = {
    	PdfName.L2R, PdfName.R2L
    };
	/** A series of viewer preferences. */
	public static final PdfName PAGE_BOUNDARIES[] = {
		PdfName.MEDIABOX, PdfName.CROPBOX, PdfName.BLEEDBOX, PdfName.TRIMBOX, PdfName.ARTBOX
	};
	/** A series of viewer preferences */
	public static final PdfName PRINTSCALING_PREFERENCES[] = {
		PdfName.APPDEFAULT, PdfName.NONE
	};
	/** A series of viewer preferences. */
	public static final PdfName DUPLEX_PREFERENCES[] = {
		PdfName.SIMPLEX, PdfName.DUPLEXFLIPSHORTEDGE, PdfName.DUPLEXFLIPLONGEDGE
	};
	
	/** This value will hold the viewer preferences for the page layout and page mode. */
	private int pageLayoutAndMode = 0;
	
	/** This dictionary holds the viewer preferences (other than page layout and page mode). */
	private PdfDictionary viewerPreferences = new PdfDictionary();
	
	/** The mask to decide if a ViewerPreferences dictionary is needed */
	private static final int viewerPreferencesMask = 0xfff000;

	/**
	 * Returns the page layout and page mode value.
	 */
	public int getPageLayoutAndMode() {
		return pageLayoutAndMode;
	}

	/**
	 * Returns the viewer preferences.
	 */
	public PdfDictionary getViewerPreferences() {
		return viewerPreferences;
	}
	
	/**
	 * Sets the viewer preferences as the sum of several constants.
	 * 
	 * @param preferences
	 *            the viewer preferences
	 * @see PdfViewerPreferences#setViewerPreferences
	 */
	public void setViewerPreferences(int preferences) {
		this.pageLayoutAndMode |= preferences;
		// for backwards compatibility, it is also possible
		// to set the following viewer preferences with this method:
		if ((preferences & viewerPreferencesMask) != 0) {
			pageLayoutAndMode = ~viewerPreferencesMask & pageLayoutAndMode;
			if ((preferences & PdfWriter.HideToolbar) != 0)
				viewerPreferences.put(PdfName.HIDETOOLBAR, PdfBoolean.PDFTRUE);
			if ((preferences & PdfWriter.HideMenubar) != 0)
				viewerPreferences.put(PdfName.HIDEMENUBAR, PdfBoolean.PDFTRUE);
			if ((preferences & PdfWriter.HideWindowUI) != 0)
				viewerPreferences.put(PdfName.HIDEWINDOWUI, PdfBoolean.PDFTRUE);
			if ((preferences & PdfWriter.FitWindow) != 0)
				viewerPreferences.put(PdfName.FITWINDOW, PdfBoolean.PDFTRUE);
			if ((preferences & PdfWriter.CenterWindow) != 0)
				viewerPreferences.put(PdfName.CENTERWINDOW, PdfBoolean.PDFTRUE);
			if ((preferences & PdfWriter.DisplayDocTitle) != 0)
				viewerPreferences.put(PdfName.DISPLAYDOCTITLE, PdfBoolean.PDFTRUE);
			
			if ((preferences & PdfWriter.NonFullScreenPageModeUseNone) != 0)
				viewerPreferences.put(PdfName.NONFULLSCREENPAGEMODE, PdfName.USENONE);
			else if ((preferences & PdfWriter.NonFullScreenPageModeUseOutlines) != 0)
				viewerPreferences.put(PdfName.NONFULLSCREENPAGEMODE, PdfName.USEOUTLINES);
			else if ((preferences & PdfWriter.NonFullScreenPageModeUseThumbs) != 0)
				viewerPreferences.put(PdfName.NONFULLSCREENPAGEMODE, PdfName.USETHUMBS);
			else if ((preferences & PdfWriter.NonFullScreenPageModeUseOC) != 0)
				viewerPreferences.put(PdfName.NONFULLSCREENPAGEMODE, PdfName.USEOC);

			if ((preferences & PdfWriter.DirectionL2R) != 0)
				viewerPreferences.put(PdfName.DIRECTION, PdfName.L2R);
			else if ((preferences & PdfWriter.DirectionR2L) != 0)
				viewerPreferences.put(PdfName.DIRECTION, PdfName.R2L);

			if ((preferences & PdfWriter.PrintScalingNone) != 0)
				viewerPreferences.put(PdfName.PRINTSCALING, PdfName.NONE);			
		}
	}
	
	/**
	 * Given a key for a viewer preference (a PdfName object),
	 * this method returns the index in the VIEWER_PREFERENCES array.
	 * @param key	a PdfName referring to a viewer preference
	 * @return	an index in the VIEWER_PREFERENCES array
	 */
	private int getIndex(PdfName key) {
		for (int i = 0; i < VIEWER_PREFERENCES.length; i++) {
			if (VIEWER_PREFERENCES[i].equals(key))
				return i;
		}
		return -1;
	}
	
	/**
	 * Checks if some value is valid for a certain key.
	 */
	private boolean isPossibleValue(PdfName value, PdfName[] accepted) {
		for (int i = 0; i < accepted.length; i++) {
			if (accepted[i].equals(value)) {
				return true;
			}
		}
		return false;
	}
	
	/**
	 * Sets the viewer preferences for printing.
	 */
	public void addViewerPreference(PdfName key, PdfObject value) {
		switch(getIndex(key)) {
		case 0: // HIDETOOLBAR
		case 1: // HIDEMENUBAR
		case 2: // HIDEWINDOWUI
		case 3: // FITWINDOW
		case 4: // CENTERWINDOW
		case 5: // DISPLAYDOCTITLE
		case 14: // PICKTRAYBYPDFSIZE
			if (value instanceof PdfBoolean) {
				viewerPreferences.put(key, value);
			}
			break;
		case 6: // NONFULLSCREENPAGEMODE
			if (value instanceof PdfName
					&& isPossibleValue((PdfName)value, NONFULLSCREENPAGEMODE_PREFERENCES)) {
				viewerPreferences.put(key, value);
			}
			break;
		case 7: // DIRECTION
			if (value instanceof PdfName
					&& isPossibleValue((PdfName)value, DIRECTION_PREFERENCES)) {
				viewerPreferences.put(key, value);
			}
			break;
		case 8:  // VIEWAREA
		case 9:  // VIEWCLIP
		case 10: // PRINTAREA
		case 11: // PRINTCLIP
			if (value instanceof PdfName
					&& isPossibleValue((PdfName)value, PAGE_BOUNDARIES)) {
				viewerPreferences.put(key, value);
			}
			break;
		case 12: // PRINTSCALING
			if (value instanceof PdfName
					&& isPossibleValue((PdfName)value, PRINTSCALING_PREFERENCES)) {
				viewerPreferences.put(key, value);
			}
			break;
		case 13: // DUPLEX
			if (value instanceof PdfName
					&& isPossibleValue((PdfName)value, DUPLEX_PREFERENCES)) {
				viewerPreferences.put(key, value);
			}
			break;
		case 15: // PRINTPAGERANGE
			if (value instanceof PdfArray) {
				viewerPreferences.put(key, value);
			}
			break;
		case 16: // NUMCOPIES
			if (value instanceof PdfNumber)  {
				viewerPreferences.put(key, value);
			}
			break;
		}
	}

	/**
	 * Adds the viewer preferences defined in the preferences parameter to a
	 * PdfDictionary (more specifically the root or catalog of a PDF file).
	 * 
	 * @param catalog
	 */
	public void addToCatalog(PdfDictionary catalog) {
		// Page Layout
		catalog.remove(PdfName.PAGELAYOUT);
		if ((pageLayoutAndMode & PdfWriter.PageLayoutSinglePage) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.SINGLEPAGE);
		else if ((pageLayoutAndMode & PdfWriter.PageLayoutOneColumn) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.ONECOLUMN);
		else if ((pageLayoutAndMode & PdfWriter.PageLayoutTwoColumnLeft) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.TWOCOLUMNLEFT);
		else if ((pageLayoutAndMode & PdfWriter.PageLayoutTwoColumnRight) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.TWOCOLUMNRIGHT);
		else if ((pageLayoutAndMode & PdfWriter.PageLayoutTwoPageLeft) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.TWOPAGELEFT);
		else if ((pageLayoutAndMode & PdfWriter.PageLayoutTwoPageRight) != 0)
			catalog.put(PdfName.PAGELAYOUT, PdfName.TWOPAGERIGHT);

		// Page Mode
		catalog.remove(PdfName.PAGEMODE);
		if ((pageLayoutAndMode & PdfWriter.PageModeUseNone) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.USENONE);
		else if ((pageLayoutAndMode & PdfWriter.PageModeUseOutlines) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.USEOUTLINES);
		else if ((pageLayoutAndMode & PdfWriter.PageModeUseThumbs) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.USETHUMBS);
		else if ((pageLayoutAndMode & PdfWriter.PageModeFullScreen) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.FULLSCREEN);
		else if ((pageLayoutAndMode & PdfWriter.PageModeUseOC) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.USEOC);
		else if ((pageLayoutAndMode & PdfWriter.PageModeUseAttachments) != 0)
			catalog.put(PdfName.PAGEMODE, PdfName.USEATTACHMENTS);

		// viewer preferences (Table 8.1 of the PDF Reference)
		catalog.remove(PdfName.VIEWERPREFERENCES);
		if (viewerPreferences.size() > 0) {
			catalog.put(PdfName.VIEWERPREFERENCES, viewerPreferences);
		}
	}

	public static PdfViewerPreferencesImp getViewerPreferences(PdfDictionary catalog) {
		PdfViewerPreferencesImp preferences = new PdfViewerPreferencesImp();
		int prefs = 0;
		PdfName name = null;
		// page layout
		PdfObject obj = PdfReader.getPdfObjectRelease(catalog.get(PdfName.PAGELAYOUT));
		if (obj != null && obj.isName()) {
			name = (PdfName) obj;
			if (name.equals(PdfName.SINGLEPAGE))
				prefs |= PdfWriter.PageLayoutSinglePage;
			else if (name.equals(PdfName.ONECOLUMN))
				prefs |= PdfWriter.PageLayoutOneColumn;
			else if (name.equals(PdfName.TWOCOLUMNLEFT))
				prefs |= PdfWriter.PageLayoutTwoColumnLeft;
			else if (name.equals(PdfName.TWOCOLUMNRIGHT))
				prefs |= PdfWriter.PageLayoutTwoColumnRight;
			else if (name.equals(PdfName.TWOPAGELEFT))
				prefs |= PdfWriter.PageLayoutTwoPageLeft;
			else if (name.equals(PdfName.TWOPAGERIGHT))
				prefs |= PdfWriter.PageLayoutTwoPageRight;
		}
		// page mode
		obj = PdfReader.getPdfObjectRelease(catalog.get(PdfName.PAGEMODE));
		if (obj != null && obj.isName()) {
			name = (PdfName) obj;
			if (name.equals(PdfName.USENONE))
				prefs |= PdfWriter.PageModeUseNone;
			else if (name.equals(PdfName.USEOUTLINES))
				prefs |= PdfWriter.PageModeUseOutlines;
			else if (name.equals(PdfName.USETHUMBS))
				prefs |= PdfWriter.PageModeUseThumbs;
			else if (name.equals(PdfName.FULLSCREEN))
				prefs |= PdfWriter.PageModeFullScreen;
			else if (name.equals(PdfName.USEOC))
				prefs |= PdfWriter.PageModeUseOC;
			else if (name.equals(PdfName.USEATTACHMENTS))
				prefs |= PdfWriter.PageModeUseAttachments;
		}
		// set page layout and page mode preferences
		preferences.setViewerPreferences(prefs);
		// other preferences
		obj = PdfReader.getPdfObjectRelease(catalog
				.get(PdfName.VIEWERPREFERENCES));
		if (obj != null && obj.isDictionary()) {
			PdfDictionary vp = (PdfDictionary) obj;
			for (int i = 0; i < VIEWER_PREFERENCES.length; i++) {
				obj = PdfReader.getPdfObjectRelease(vp.get(VIEWER_PREFERENCES[i]));
				preferences.addViewerPreference(VIEWER_PREFERENCES[i], obj);
			}
		}
		return preferences;
	}
}

⏎ com/itextpdf/text/pdf/internal/PdfViewerPreferencesImp.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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