Java tutorial
/* * * This file is part of the iText (R) project. Copyright (c) 1998-2019 iText Group NV * Authors: 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 * ITEXT GROUP. ITEXT GROUP 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; import com.itextpdf.text.pdf.hyphenation.Hyphenation; import com.itextpdf.text.pdf.hyphenation.Hyphenator; /** 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 */ 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 <CODE>Chunk</CODE>. * @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 minimum number of letters before the hyphen * @param rightMin the minimum 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 <CODE>getHyphenatedWordPost()</CODE>. * @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 <CODE>getHyphenatedWordPre()</CODE>. * @return the second part of the hyphenated word */ public String getHyphenatedWordPost() { return post; } }