iTextSharp-LGPL/src/core/iTextSharp/text/rtf/style/RtfFontList.cs

using System;
using System.IO;
using System.Collections;
using iTextSharp.text;
using iTextSharp.text.rtf;
using iTextSharp.text.rtf.document;
/*
 * $Id: RtfFontList.cs,v 1.6 2008/05/16 19:31:12 psoares33 Exp $
 * 
 *
 * Copyright 2001, 2002, 2003, 2004 by Mark Hall
 *
 * 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, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 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/
 */

namespace iTextSharp.text.rtf.style {

    /**
    * The RtfFontList stores the list of fonts used in the rtf document. It also
    * has methods for writing this list to the document
    *
    * Version: $Id: RtfFontList.cs,v 1.6 2008/05/16 19:31:12 psoares33 Exp $
    * @author Mark Hall (Mark.Hall@mail.room3b.eu)
    */
    public class RtfFontList : RtfElement, IRtfExtendedElement {
        
        /**
        * Constant for the default font
        */
        private static byte[] DEFAULT_FONT = DocWriter.GetISOBytes("\\deff");
        /**
        * Constant for the font table
        */
        private static byte[] FONT_TABLE = DocWriter.GetISOBytes("\\fonttbl");
        /**
        * Constant for the font number
        */
        public static byte[] FONT_NUMBER = DocWriter.GetISOBytes("\\f");
        
        /**
        * The list of fonts
        */
        private ArrayList fontList = new ArrayList();

        /**
        * Creates a RtfFontList
        *
        * @param doc The RtfDocument this RtfFontList belongs to
        */
        public RtfFontList(RtfDocument doc) : base(doc) {
            fontList.Add(new RtfFont(document, 0));
        }

        /**
        * unused
        */
        public override void WriteContent(Stream outp) {       
        }
        
        /**
        * Gets the index of the font in the list of fonts. If the font does not
        * exist in the list, it is added.
        *
        * @param font The font to get the id for
        * @return The index of the font
        */
        public int GetFontNumber(RtfFont font) {
            if(font is RtfParagraphStyle) {
                font = new RtfFont(this.document, (RtfParagraphStyle) font);
            }
            int fontIndex = -1;
            for (int i = 0; i < fontList.Count; i++) {
                if (fontList[i].Equals(font)) {
                    fontIndex = i;
                }
            }
            if (fontIndex == -1) {
                fontIndex = fontList.Count;
                fontList.Add(font);
            }
            return fontIndex;
        }

        /**
        * Writes the definition of the font list
        */
        public virtual void WriteDefinition(Stream result) {
            byte[] t;
            result.Write(DEFAULT_FONT, 0, DEFAULT_FONT.Length);
            result.Write(t = IntToByteArray(0), 0, t.Length);
            result.Write(OPEN_GROUP, 0, OPEN_GROUP.Length);
            result.Write(FONT_TABLE, 0, FONT_TABLE.Length);
            for (int i = 0; i < fontList.Count; i++) {
                result.Write(OPEN_GROUP, 0, OPEN_GROUP.Length);
                result.Write(FONT_NUMBER, 0, FONT_NUMBER.Length);
                result.Write(t = IntToByteArray(i), 0, t.Length);
                RtfFont rf = (RtfFont) fontList[i];
                rf.WriteDefinition(result);
                result.Write(COMMA_DELIMITER, 0, COMMA_DELIMITER.Length);
                result.Write(CLOSE_GROUP, 0, CLOSE_GROUP.Length);
            }
            result.Write(CLOSE_GROUP, 0, CLOSE_GROUP.Length);
            this.document.OutputDebugLinebreak(result);
        }
    }
}