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+/*
+ * Copyright 2003 by 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 java.util.ArrayList;
+import com.lowagie.text.*;
+
+/** Selects the appropriate fonts that contain the glyphs needed to
+ * render text correctly. The fonts are checked in order until the
+ * character is found.
+ * <p>
+ * The built in fonts "Symbol" and "ZapfDingbats", if used, have a special encoding
+ * to allow the characters to be referred by Unicode.
+ * @author Paulo Soares (psoares@consiste.pt)
+ */
+public class FontSelector {
+
+ protected ArrayList fonts = new ArrayList();
+
+ /**
+ * Adds a <CODE>Font</CODE> to be searched for valid characters.
+ * @param font the <CODE>Font</CODE>
+ */
+ public void addFont(Font font) {
+ if (font.getBaseFont() != null) {
+ fonts.add(font);
+ return;
+ }
+ BaseFont bf = font.getCalculatedBaseFont(true);
+ Font f2 = new Font(bf, font.size(), font.getCalculatedStyle(), font.color());
+ fonts.add(f2);
+ }
+
+ /**
+ * Process the text so that it will render with a combination of fonts
+ * if needed.
+ * @param text the text
+ * @return a <CODE>Phrase</CODE> with one or more chunks
+ */
+ public Phrase process(String text) {
+ int fsize = fonts.size();
+ if (fsize == 0)
+ throw new IndexOutOfBoundsException("No font is defined.");
+ char cc[] = text.toCharArray();
+ int len = cc.length;
+ StringBuffer sb = new StringBuffer();
+ Font font = null;
+ int lastidx = -1;
+ Phrase ret = new Phrase();
+ for (int k = 0; k < len; ++k) {
+ char c = cc[k];
+ if (c == '\n' || c == '\r') {
+ sb.append(c);
+ continue;
+ }
+ for (int f = 0; f < fsize; ++f) {
+ font = (Font)fonts.get(f);
+ if (font.getBaseFont().charExists(c)) {
+ if (lastidx == f)
+ sb.append(c);
+ else {
+ if (sb.length() > 0 && lastidx != -1) {
+ Chunk ck = new Chunk(sb.toString(), (Font)fonts.get(lastidx));
+ ret.add(ck);
+ sb.setLength(0);
+ }
+ sb.append(c);
+ lastidx = f;
+ }
+ break;
+ }
+ }
+ }
+ if (sb.length() > 0) {
+ Chunk ck = new Chunk(sb.toString(), (Font)fonts.get(lastidx));
+ ret.add(ck);
+ }
+ return ret;
+ }
+}