3rdPartyLibraries/iTechSharp/iTextSharp/text/pdf/PdfFont.cs

using System;
using iTextSharp.text;
/*
 * $Id: PdfFont.cs,v 1.4 2008/05/13 11:25:21 psoares33 Exp $
 * 
 *
 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
 *
 * 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.pdf {
    /**
    * <CODE>PdfFont</CODE> is the Pdf Font object.
    * <P>
    * Limitation: in this class only base 14 Type 1 fonts (courier, courier bold, courier oblique,
    * courier boldoblique, helvetica, helvetica bold, helvetica oblique, helvetica boldoblique,
    * symbol, times roman, times bold, times italic, times bolditalic, zapfdingbats) and their
    * standard encoding (standard, MacRoman, (MacExpert,) WinAnsi) are supported.<BR>
    * This object is described in the 'Portable Document Format Reference Manual version 1.3'
    * section 7.7 (page 198-203).
    *
    * @see        PdfName
    * @see        PdfDictionary
    * @see        BadPdfFormatException
    */

    public class PdfFont : IComparable {
        
        
        /** the font metrics. */
        private BaseFont font;
        
        /** the size. */
        private float size;
        
        /** an image. */
        protected Image image;
        
        protected float hScale = 1;
        
        // constructors
        
        internal PdfFont(BaseFont bf, float size) {
            this.size = size;
            font = bf;
        }
        
        // methods
        
        /**
        * Compares this <CODE>PdfFont</CODE> with another
        *
        * @param    object    the other <CODE>PdfFont</CODE>
        * @return    a value
        */
        
        public int CompareTo(Object obj) {
            if (image != null)
                return 0;
            if (obj == null) {
                return -1;
            }
            PdfFont pdfFont;
            try {
                pdfFont = (PdfFont) obj;
                if (font != pdfFont.font) {
                    return 1;
                }
                if (this.Size != pdfFont.Size) {
                    return 2;
                }
                return 0;
            }
            catch (InvalidCastException) {
                return -2;
            }
        }
        
        /**
        * Returns the size of this font.
        *
        * @return        a size
        */
        
        internal float Size {
            get {
                if (image == null)
                    return size;
                else {
                    return image.ScaledHeight;
                }
            }
        }
        
        /**
        * Returns the approximative width of 1 character of this font.
        *
        * @return        a width in Text Space
        */
        
        internal float Width() {
            return Width(' ');
        }
        
        /**
        * Returns the width of a certain character of this font.
        *
        * @param        character    a certain character
        * @return        a width in Text Space
        */
        
        internal float Width(int character) {
            if (image == null)
                return font.GetWidthPoint(character, size) * hScale;
            else
                return image.ScaledWidth;
        }
        
        internal float Width(String s) {
            if (image == null)
                return font.GetWidthPoint(s, size) * hScale;
            else
                return image.ScaledWidth;
        }
        
        internal BaseFont Font {
            get { 
                return font;
            }
        }
        
        internal Image Image {
            set {
                this.image = value;
            }
        }
        
        internal static PdfFont DefaultFont {
            get {
                BaseFont bf = BaseFont.CreateFont(BaseFont.HELVETICA, BaseFont.WINANSI, false);
                return new PdfFont(bf, 12);
            }
        }

        internal float HorizontalScaling {
            set {
                this.hScale = value;
            }
        }
    }
}