/*
 * $Id: GraphicsState.java 4784 2011-03-15 08:33:00Z blowagie $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 1998-2011 1T3XT BVBA
 * Authors: Kevin Day, 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 1T3XT,
 * 1T3XT 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.parser;

import com.itextpdf.text.pdf.CMapAwareDocumentFont;

/**
 * Keeps all the parameters of the graphics state.
 * @since       2.1.4
 */
public 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. */
    boolean knockout;
    
    /**
     * Constructs a new Graphics State object with the default values.
     */
    public GraphicsState(){
        ctm = new Matrix();
        characterSpacing = 0;
        wordSpacing = 0;
        horizontalScaling = 1.0f;
        leading = 0;
        font = null;
        fontSize = 0;
        renderMode = 0;
        rise = 0;
        knockout = true;
    }
    
    /**
     * Copy constructor.
     * @param source    another GraphicsState object
     */
    public GraphicsState(GraphicsState source){
        // note: all of the following are immutable, with the possible exception of font
        // so it is safe to copy them as-is
        ctm = source.ctm;
        characterSpacing = source.characterSpacing;
        wordSpacing = source.wordSpacing;
        horizontalScaling = source.horizontalScaling;
        leading = source.leading;
        font = source.font;
        fontSize = source.fontSize;
        renderMode = source.renderMode;
        rise = source.rise;
        knockout = source.knockout;
    }

        /**
         * Getter for the current transformation matrix
         * @return the ctm
         * @since iText 5.0.1
         */
        public Matrix getCtm() {
                return ctm;
        }

        /**
         * Getter for the character spacing.
         * @return the character spacing
         * @since iText 5.0.1
         */
        public float getCharacterSpacing() {
                return characterSpacing;
        }

        /**
         * Getter for the word spacing
         * @return the word spacing
         * @since iText 5.0.1
         */
        public float getWordSpacing() {
                return wordSpacing;
        }

        /**
         * Getter for the horizontal scaling
         * @return the horizontal scaling
         * @since iText 5.0.1
         */
        public float getHorizontalScaling() {
                return horizontalScaling;
        }

        /**
         * Getter for the leading
         * @return the leading
         * @since iText 5.0.1
         */
        public float getLeading() {
                return leading;
        }

        /**
         * Getter for the font
         * @return the font
         * @since iText 5.0.1
         */
        public CMapAwareDocumentFont getFont() {
                return font;
        }

        /**
         * Getter for the font size
         * @return the font size
         * @since iText 5.0.1
         */
        public float getFontSize() {
                return fontSize;
        }

        /**
         * Getter for the render mode
         * @return the renderMode
         * @since iText 5.0.1
         */
        public int getRenderMode() {
                return renderMode;
        }

        /**
         * Getter for text rise
         * @return the text rise
         * @since iText 5.0.1
         */
        public float getRise() {
                return rise;
        }

        /**
         * Getter for knockout
         * @return the knockout
         * @since iText 5.0.1
         */
        public boolean isKnockout() {
                return knockout;
        }
}