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/*
* Copyright 2002 Paulo Soares
*
* 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.pdf;
import com.lowagie.text.pdf.hyphenation.Hyphenator;
import com.lowagie.text.pdf.hyphenation.Hyphenation;
/** Hyphenates words automatically accordingly to the language and country.
* The hyphenator engine was taken from FOP and uses the TEX patterns. If a language
* is not provided and a TEX pattern for it exists, it can be easily adapted.
*
* @author Paulo Soares ([email protected])
*/
public class HyphenationAuto implements HyphenationEvent {
/** The hyphenator engine.
*/
protected Hyphenator hyphenator;
/** The second part of the hyphenated word.
*/
protected String post;
/** Creates a new hyphenation instance usable in Chunk.
* @param lang the language ("en" for english, for example)
* @param country the country ("GB" for Great-Britain or "none" for no country, for example)
* @param leftMin the minimun number of letters before the hyphen
* @param rightMin the minimun number of letters after the hyphen
*/
public HyphenationAuto(String lang, String country, int leftMin, int rightMin) {
hyphenator = new Hyphenator(lang, country, leftMin, rightMin);
}
/** Gets the hyphen symbol.
* @return the hyphen symbol
*/
public String getHyphenSymbol() {
return "-";
}
/** Hyphenates a word and returns the first part of it. To get
* the second part of the hyphenated word call getHyphenatedWordPost().
* @param word the word to hyphenate
* @param font the font used by this word
* @param fontSize the font size used by this word
* @param remainingWidth the width available to fit this word in
* @return the first part of the hyphenated word including
* the hyphen symbol, if any
*/
public String getHyphenatedWordPre(String word, BaseFont font, float fontSize, float remainingWidth) {
post = word;
String hyphen = getHyphenSymbol();
float hyphenWidth = font.getWidthPoint(hyphen, fontSize);
if (hyphenWidth > remainingWidth)
return "";
Hyphenation hyphenation = hyphenator.hyphenate(word);
if (hyphenation == null) {
return "";
}
int len = hyphenation.length();
int k;
for (k = 0; k < len; ++k) {
if (font.getWidthPoint(hyphenation.getPreHyphenText(k), fontSize) + hyphenWidth > remainingWidth)
break;
}
--k;
if (k < 0)
return "";
post = hyphenation.getPostHyphenText(k);
return hyphenation.getPreHyphenText(k) + hyphen;
}
/** Gets the second part of the hyphenated word. Must be called
* after getHyphenatedWordPre().
* @return the second part of the hyphenated word
*/
public String getHyphenatedWordPost() {
return post;
}
}
