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Version modificada de iText 2.1.7 con el paquete cambiado, adaptaciones menores para firma y dependencias actualizadas.
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/*
 * Copyright 2008 by Kevin Day.
 *
 * 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) 1999-2008 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000-2008 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.aowagie.text.pdf.parser;

import com.aowagie.text.pdf.CMapAwareDocumentFont;

/**
 * Keeps all the parameters of the graphics state.
 * @since	2.1.4
 */
class GraphicsState {
    /** The current transformation matrix. */
    Matrix ctm;
    /** The current character spacing. */
    float characterSpacing;
    /** The current word spacing. */
    float wordSpacing;
    /** The current horizontal scaling */
    float horizontalScaling;
    /** The current leading. */
    float leading;
    /** The active font. */
    CMapAwareDocumentFont font;
    /** The current font size. */
    float fontSize;
    /** The current render mode. */
    int renderMode;
    /** The current text rise */
    float rise;
    /** The current knockout value. */
    private final boolean knockout;

    /**
     * Constructs a new Graphics State object with the default values.
     */
    public GraphicsState(){
        this.ctm = new Matrix();
        this.characterSpacing = 0;
        this.wordSpacing = 0;
        this.horizontalScaling = 1.0f;
        this.leading = 0;
        this.font = null;
        this.fontSize = 0;
        this.renderMode = 0;
        this.rise = 0;
        this.knockout = true;
    }

    /**
     * Copy constructor.
     * @param source	another GraphicsState object
     */
    public GraphicsState(final GraphicsState source){
        // note: all of the following are immutable, with the possible exception of font
        // so it is safe to copy them as-is
        this.ctm = source.ctm;
        this.characterSpacing = source.characterSpacing;
        this.wordSpacing = source.wordSpacing;
        this.horizontalScaling = source.horizontalScaling;
        this.leading = source.leading;
        this.font = source.font;
        this.fontSize = source.fontSize;
        this.renderMode = source.renderMode;
        this.rise = source.rise;
        this.knockout = source.knockout;
    }
}