rtffont.java

iText是一个能够快速产生PDF文件的java类库。iText的java类对于那些要产生包含文本

/*
 * $Id: RtfFont.java 2784 2007-05-24 15:43:40Z hallm $
 * $Name$
 *
 * 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/
 */

package com.lowagie.text.rtf.style;

import java.awt.Color;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import com.lowagie.text.Font;
import com.lowagie.text.rtf.RtfExtendedElement;
import com.lowagie.text.rtf.document.RtfDocument;

/**
 * The RtfFont class stores one font for an rtf document. It extends Font,
 * so can be set as a font, to allow adding of fonts with arbitrary names.
 * BaseFont fontname handling contributed by Craig Fleming. Various fixes
 * Renaud Michel, Werner Daehn.
 *
 * Version: $Id: RtfFont.java 2784 2007-05-24 15:43:40Z hallm $
 * @author Mark Hall ([e-mail])
 * @author Craig Fleming ([e-mail])
 * @author Renaud Michel ([e-mail])
 * @author Werner Daehn ([e-mail])
 * @author Lidong Liu ([e-mail])
 * @author Thomas Bickel ([e-mail])
 */
public class RtfFont extends Font implements RtfExtendedElement {
    /**
     * Constant for the font family to use ("froman")
     */
    private static final byte[] FONT_FAMILY = "\\froman".getBytes();
    /**
     * Constant for the charset
     */
    private static final byte[] FONT_CHARSET = "\\fcharset".getBytes();
    /**
     * Constant for the font size
     */
    public static final byte[] FONT_SIZE = "\\fs".getBytes();
    /**
     * Constant for the bold flag
     */
    private static final byte[] FONT_BOLD = "\\b".getBytes();
    /**
     * Constant for the italic flag
     */
    private static final byte[] FONT_ITALIC = "\\i".getBytes();
    /**
     * Constant for the underline flag
     */
    private static final byte[] FONT_UNDERLINE = "\\ul".getBytes();
    /**
     * Constant for the strikethrough flag
     */
    private static final byte[] FONT_STRIKETHROUGH = "\\strike".getBytes();
    /**
     * Constant for the double strikethrough flag
     */
    private static final byte[] FONT_DOUBLE_STRIKETHROUGH = "\\striked".getBytes();
    /**
     * Constant for the shadow flag
     */
    private static final byte[] FONT_SHADOW = "\\shad".getBytes();
    /**
     * Constant for the outline flag
     */
    private static final byte[] FONT_OUTLINE = "\\outl".getBytes();
    /**
     * Constant for the embossed flag
     */
    private static final byte[] FONT_EMBOSSED = "\\embo".getBytes();
    /**
     * Constant for the engraved flag
     */
    private static final byte[] FONT_ENGRAVED = "\\impr".getBytes();
    /**
     * Constant for hidden text flag
     */
    private static final byte[] FONT_HIDDEN = "\\v".getBytes();
    
    /**
     * Constant for a plain font
     */
    public static final int STYLE_NONE = 0;
    /**
     * Constant for a bold font
     */
    public static final int STYLE_BOLD = 1;
    /**
     * Constant for an italic font
     */
    public static final int STYLE_ITALIC = 2;
    /**
     * Constant for an underlined font
     */
    public static final int STYLE_UNDERLINE = 4;
    /**
     * Constant for a strikethrough font
     */
    public static final int STYLE_STRIKETHROUGH = 8;
    /**
     * Constant for a double strikethrough font
     */
    public static final int STYLE_DOUBLE_STRIKETHROUGH = 16;
    /**
     * Constant for a shadowed font
     */
    public static final int STYLE_SHADOW = 32;
    /**
     * Constant for an outlined font
     */
    public static final int STYLE_OUTLINE = 64;
    /**
     * Constant for an embossed font
     */
    public static final int STYLE_EMBOSSED = 128;
    /**
     * Constant for an engraved font
     */
    public static final int STYLE_ENGRAVED = 256;
    /**
     * Constant for a font that hides the actual text.
     */
    public static final int STYLE_HIDDEN = 512;

    /**
     * The font name. Defaults to "Times New Roman"
     */
    private String fontName = "Times New Roman";
    /**
     * The font size. Defaults to 10
     */
    private int fontSize = 10;
    /**
     * The font style. Defaults to STYLE_NONE
     */
    private int fontStyle = STYLE_NONE;
    /**
     * The number of this font
     */
    private int fontNumber = 0;
    /**
     * The colour of this font
     */
    private RtfColor color = null;
    /**
     * The character set to use for this font
     */
    private int charset = 0;
    /**
     * The RtfDocument this RtfFont belongs to.
     */
    protected RtfDocument document = null;
    
    /**
     * Constructs a RtfFont with the given font name and all other properties
     * at their default values.
     * 
     * @param fontName The font name to use
     */
    public RtfFont(String fontName) {
        super(Font.UNDEFINED, Font.UNDEFINED, Font.UNDEFINED, null);
        this.fontName = fontName;
    }
    
    /**
     * Constructs a RtfFont with the given font name and font size and all other
     * properties at their default values.
     * 
     * @param fontName The font name to use
     * @param size The font size to use
     */
    public RtfFont(String fontName, float size) {
        super(Font.UNDEFINED, size, Font.UNDEFINED, null);
        this.fontName = fontName;
    }
    
    /**
     * Constructs a RtfFont with the given font name, font size and font style and the
     * default color.
     * 
     * @param fontName The font name to use
     * @param size The font size to use
     * @param style The font style to use
     */
    public RtfFont(String fontName, float size, int style) {
        super(Font.UNDEFINED, size, style, null);
        this.fontName = fontName;
    }
    
    /**
     * Constructs a RtfFont with the given font name, font size, font style and
     * color.
     * 
     * @param fontName The font name to use
     * @param size the font size to use
     * @param style The font style to use
     * @param color The font color to use
     */
    public RtfFont(String fontName, float size, int style, Color color) {
        super(Font.UNDEFINED, size, style, color);
        this.fontName = fontName;
    }
    
    /**
     * Constructs a RtfFont with the given font name, font size, font style, colour
     * and charset. This can be used when generating non latin-1 text.
     * 
     * @param fontName The font name to use
     * @param size the font size to use
     * @param style The font style to use
     * @param color The font color to use
     * @param charset The charset of the font content
     */
    public RtfFont(String fontName, float size, int style, Color color, int charset) {
        this(fontName, size, style, color);
        this.charset = charset;
    }

    /**
     * Special constructor for the default font
     *
     * @param doc The RtfDocument this font appears in
     * @param fontNumber The id of this font
     */
    protected RtfFont(RtfDocument doc, int fontNumber) {
        this.document = doc;
        this.fontNumber = fontNumber;
        color = new RtfColor(doc, 0, 0, 0);
    }

    /**
     * Constructs a RtfFont from a com.lowagie.text.Font
     * @param doc The RtfDocument this font appears in
     * @param font The Font to use as a base
     */
    public RtfFont(RtfDocument doc, Font font) {
        this.document = doc;
        if(font != null) {
            if(font instanceof RtfFont) {
                this.fontName = ((RtfFont) font).getFontName();
                this.charset = ((RtfFont) font).getCharset();
            } else {
                setToDefaultFamily(font.getFamilyname());
            }
            if(font.getBaseFont() != null) {
                String[][] fontNames = font.getBaseFont().getFullFontName();
                for(int i = 0; i < fontNames.length; i++) {
                    if(fontNames[i][2].equals("0")) {
                        this.fontName = fontNames[i][3];
                        break;
                    } else if(fontNames[i][2].equals("1033") || fontNames[i][2].equals("")) {
                        this.fontName = fontNames[i][3];
                    }
                }
            }
            
            setSize(font.getSize());
            setStyle(font.getStyle());
            setColor(font.getColor());
        }

        if(this.fontName.equalsIgnoreCase("unknown")) {
            return;
        }

        if(document != null) {
            setRtfDocument(document);
        }
    }

    /**
     * Writes the font definition
     *
     * @return A byte array with the font definition
     * @deprecated replaced by {@link #writeDefinition(OutputStream)}
     */
    public byte[] writeDefinition() {
        ByteArrayOutputStream result = new ByteArrayOutputStream();
        try {
        	writeDefinition(result);
        } catch(IOException ioe) {
            ioe.printStackTrace();
        }
        return result.toByteArray();
    }
    
    /**
     * Writes the font definition
     */
    public void writeDefinition(final OutputStream result) throws IOException
    {
        result.write(FONT_FAMILY);
        result.write(FONT_CHARSET);
        result.write(intToByteArray(charset));
        result.write(DELIMITER);
        //.result.write(document.filterSpecialChar(fontName, true, false).getBytes());
        document.filterSpecialChar(result, fontName, true, false);
    }
    
    /**
     * Writes the font beginning
     *
     * @return A byte array with the font start data
     */
    public byte[] writeBegin() {
        ByteArrayOutputStream result = new ByteArrayOutputStream();
        try {
            if(this.fontNumber != Font.UNDEFINED) {
                result.write(RtfFontList.FONT_NUMBER);
                result.write(intToByteArray(fontNumber));
            }
            if(this.fontSize != Font.UNDEFINED) {
                result.write(FONT_SIZE);
                result.write(intToByteArray(fontSize * 2));
            }
            if(this.fontStyle != UNDEFINED) {
                if((fontStyle & STYLE_BOLD) == STYLE_BOLD) {
                    result.write(FONT_BOLD);
                }
                if((fontStyle & STYLE_ITALIC) == STYLE_ITALIC) {
                    result.write(FONT_ITALIC);