From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001 From: tknall Date: Fri, 1 Dec 2006 12:20:24 +0000 Subject: Initial import of release 2.2. git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c --- .../com/lowagie/text/pdf/TrueTypeFontUnicode.java | 456 +++++++++++++++++++++ 1 file changed, 456 insertions(+) create mode 100644 src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java (limited to 'src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java') diff --git a/src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java b/src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java new file mode 100644 index 0000000..a05f744 --- /dev/null +++ b/src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java @@ -0,0 +1,456 @@ +/* + * $Id: TrueTypeFontUnicode.java,v 1.53 2006/02/23 16:45:48 psoares33 Exp $ + * $Name: $ + * + * Copyright 2001, 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 java.io.IOException; +import java.util.Arrays; +import java.util.Comparator; +import java.util.HashMap; +import java.util.ArrayList; + +import com.lowagie.text.DocumentException; +/** Represents a True Type font with Unicode encoding. All the character + * in the font can be used directly by using the encoding Identity-H or + * Identity-V. This is the only way to represent some character sets such + * as Thai. + * @author Paulo Soares (psoares@consiste.pt) + */ +class TrueTypeFontUnicode extends TrueTypeFont implements Comparator{ + + /** true if the encoding is vertical. + */ + boolean vertical = false; + + /** Creates a new TrueType font addressed by Unicode characters. The font + * will always be embedded. + * @param ttFile the location of the font on file. The file must end in '.ttf'. + * The modifiers after the name are ignored. + * @param enc the encoding to be applied to this font + * @param emb true if the font is to be embedded in the PDF + * @param ttfAfm the font as a byte array + * @throws DocumentException the font is invalid + * @throws IOException the font file could not be read + */ + TrueTypeFontUnicode(String ttFile, String enc, boolean emb, byte ttfAfm[]) throws DocumentException, IOException { + String nameBase = getBaseName(ttFile); + String ttcName = getTTCName(nameBase); + if (nameBase.length() < ttFile.length()) { + style = ttFile.substring(nameBase.length()); + } + encoding = enc; + embedded = emb; + fileName = ttcName; + ttcIndex = ""; + if (ttcName.length() < nameBase.length()) + ttcIndex = nameBase.substring(ttcName.length() + 1); + fontType = FONT_TYPE_TTUNI; + if ((fileName.toLowerCase().endsWith(".ttf") || fileName.toLowerCase().endsWith(".otf") || fileName.toLowerCase().endsWith(".ttc")) && ((enc.equals(IDENTITY_H) || enc.equals(IDENTITY_V)) && emb)) { + process(ttfAfm); + if (os_2.fsType == 2) + throw new DocumentException(fileName + style + " cannot be embedded due to licensing restrictions."); + // Sivan + if ((cmap31 == null && !fontSpecific) || (cmap10 == null && fontSpecific)) + directTextToByte=true; + //throw new DocumentException(fileName + " " + style + " does not contain an usable cmap."); + if (fontSpecific) { + fontSpecific = false; + String tempEncoding = encoding; + encoding = ""; + createEncoding(); + encoding = tempEncoding; + fontSpecific = true; + } + } + else + throw new DocumentException(fileName + " " + style + " is not a TTF font file."); + vertical = enc.endsWith("V"); + } + +/** + * Gets the width of a String in normalized 1000 units. + * @param text the String to get the witdth of + * @return the width in normalized 1000 units + */ + public int getWidth(String text) + { + if (vertical) + return text.length() * 1000; + int total = 0; + if (fontSpecific) { + char cc[] = text.toCharArray(); + int len = cc.length; + for (int k = 0; k < len; ++k) { + char c = cc[k]; + if ((c & 0xff00) == 0 || (c & 0xff00) == 0xf000) + total += getRawWidth(c & 0xff, null); + } + } + else { + int len = text.length(); + for (int k = 0; k < len; ++k) + total += getRawWidth(text.charAt(k), encoding); + } + return total; + } + + /** Creates a ToUnicode CMap to allow copy and paste from Acrobat. + * @param metrics metrics[0] contains the glyph index and metrics[2] + * contains the Unicode code + * @throws DocumentException on error + * @return the stream representing this CMap or null + */ + private PdfStream getToUnicode(Object metrics[]) throws DocumentException { + if (metrics.length == 0) + return null; + StringBuffer buf = new StringBuffer( + "/CIDInit /ProcSet findresource begin\n" + + "12 dict begin\n" + + "begincmap\n" + + "/CIDSystemInfo\n" + + "<< /Registry (Adobe)\n" + + "/Ordering (UCS)\n" + + "/Supplement 0\n" + + ">> def\n" + + "/CMapName /Adobe-Identity-UCS def\n" + + "/CMapType 2 def\n" + + "1 begincodespacerange\n" + + "<0000>\n" + + "endcodespacerange\n"); + int size = 0; + for (int k = 0; k < metrics.length; ++k) { + if (size == 0) { + if (k != 0) { + buf.append("endbfrange\n"); + } + size = Math.min(100, metrics.length - k); + buf.append(size).append(" beginbfrange\n"); + } + --size; + int metric[] = (int[])metrics[k]; + String fromTo = toHex(metric[0]); + buf.append(fromTo).append(fromTo).append(toHex(metric[2])).append("\n"); + } + buf.append( + "endbfrange\n" + + "endcmap\n" + + "CMapName currentdict /CMap defineresource pop\n" + + "end end\n"); + String s = buf.toString(); + PdfStream stream = new PdfStream(PdfEncodings.convertToBytes(s, null)); + stream.flateCompress(); + return stream; + } + + /** Gets an hex string in the format "<HHHH>". + * @param n the number + * @return the hex string + */ + static String toHex(int n) { + String s = Integer.toHexString(n); + return "<0000".substring(0, 5 - s.length()) + s + ">"; + } + + /** Generates the CIDFontTyte2 dictionary. + * @param fontDescriptor the indirect reference to the font descriptor + * @param subsetPrefix the subset prefix + * @param metrics the horizontal width metrics + * @return a stream + */ + private PdfDictionary getCIDFontType2(PdfIndirectReference fontDescriptor, String subsetPrefix, Object metrics[]) { + PdfDictionary dic = new PdfDictionary(PdfName.FONT); + // sivan; cff + if (cff) { + dic.put(PdfName.SUBTYPE, PdfName.CIDFONTTYPE0); + dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix+fontName+"-"+encoding)); + } + else { + dic.put(PdfName.SUBTYPE, PdfName.CIDFONTTYPE2); + dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix + fontName)); + } + dic.put(PdfName.FONTDESCRIPTOR, fontDescriptor); + if (!cff) + dic.put(PdfName.CIDTOGIDMAP,PdfName.IDENTITY); + PdfDictionary cdic = new PdfDictionary(); + cdic.put(PdfName.REGISTRY, new PdfString("Adobe")); + cdic.put(PdfName.ORDERING, new PdfString("Identity")); + cdic.put(PdfName.SUPPLEMENT, new PdfNumber(0)); + dic.put(PdfName.CIDSYSTEMINFO, cdic); + if (!vertical) { + dic.put(PdfName.DW, new PdfNumber(1000)); + StringBuffer buf = new StringBuffer("["); + int lastNumber = -10; + boolean firstTime = true; + for (int k = 0; k < metrics.length; ++k) { + int metric[] = (int[])metrics[k]; + if (metric[1] == 1000) + continue; + int m = metric[0]; + if (m == lastNumber + 1) { + buf.append(" ").append(metric[1]); + } + else { + if (!firstTime) { + buf.append("]"); + } + firstTime = false; + buf.append(m).append("[").append(metric[1]); + } + lastNumber = m; + } + if (buf.length() > 1) { + buf.append("]]"); + dic.put(PdfName.W, new PdfLiteral(buf.toString())); + } + } + return dic; + } + + /** Generates the font dictionary. + * @param descendant the descendant dictionary + * @param subsetPrefix the subset prefix + * @param toUnicode the ToUnicode stream + * @return the stream + */ + private PdfDictionary getFontBaseType(PdfIndirectReference descendant, String subsetPrefix, PdfIndirectReference toUnicode) { + PdfDictionary dic = new PdfDictionary(PdfName.FONT); + + dic.put(PdfName.SUBTYPE, PdfName.TYPE0); + // The PDF Reference manual advises to add -encoding to CID font names + if (cff) + dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix+fontName+"-"+encoding)); + //dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix+fontName)); + else + dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix + fontName)); + //dic.put(PdfName.BASEFONT, new PdfName(fontName)); + dic.put(PdfName.ENCODING, new PdfName(encoding)); + dic.put(PdfName.DESCENDANTFONTS, new PdfArray(descendant)); + if (toUnicode != null) + dic.put(PdfName.TOUNICODE, toUnicode); + return dic; + } + + /** The method used to sort the metrics array. + * @param o1 the first element + * @param o2 the second element + * @return the comparisation + */ + public int compare(Object o1, Object o2) { + int m1 = ((int[])o1)[0]; + int m2 = ((int[])o2)[0]; + if (m1 < m2) + return -1; + if (m1 == m2) + return 0; + return 1; + } + + /** Outputs to the writer the font dictionaries and streams. + * @param writer the writer for this document + * @param ref the font indirect reference + * @param params several parameters that depend on the font type + * @throws IOException on error + * @throws DocumentException error in generating the object + */ + void writeFont(PdfWriter writer, PdfIndirectReference ref, Object params[]) throws DocumentException, IOException { + HashMap longTag = (HashMap)params[0]; + addRangeUni(longTag, true, subset); + Object metrics[] = longTag.values().toArray(); + Arrays.sort(metrics, this); + PdfIndirectReference ind_font = null; + PdfObject pobj = null; + PdfIndirectObject obj = null; + // sivan: cff + if (cff) { + RandomAccessFileOrArray rf2 = new RandomAccessFileOrArray(rf); + byte b[] = new byte[cffLength]; + try { + rf2.reOpen(); + rf2.seek(cffOffset); + rf2.readFully(b); + } finally { + try { + rf2.close(); + } catch (Exception e) { + // empty on purpose + } + } + if (subset || subsetRanges != null) { + CFFFontSubset cff = new CFFFontSubset(new RandomAccessFileOrArray(b),longTag); + b = cff.Process( (cff.getNames())[0] ); + } + pobj = new StreamFont(b, "CIDFontType0C"); + obj = writer.addToBody(pobj); + ind_font = obj.getIndirectReference(); + } else { + byte[] b; + if (subset || directoryOffset != 0) { + TrueTypeFontSubSet sb = new TrueTypeFontSubSet(fileName, new RandomAccessFileOrArray(rf), longTag, directoryOffset, false, false); + b = sb.process(); + } + else { + b = getFullFont(); + } + int lengths[] = new int[]{b.length}; + pobj = new StreamFont(b, lengths); + obj = writer.addToBody(pobj); + ind_font = obj.getIndirectReference(); + } + String subsetPrefix = ""; + if (subset) + subsetPrefix = createSubsetPrefix(); + PdfDictionary dic = getFontDescriptor(ind_font, subsetPrefix); + obj = writer.addToBody(dic); + ind_font = obj.getIndirectReference(); + + pobj = getCIDFontType2(ind_font, subsetPrefix, metrics); + obj = writer.addToBody(pobj); + ind_font = obj.getIndirectReference(); + + pobj = getToUnicode(metrics); + PdfIndirectReference toUnicodeRef = null; + + if (pobj != null) { + obj = writer.addToBody(pobj); + toUnicodeRef = obj.getIndirectReference(); + } + + pobj = getFontBaseType(ind_font, subsetPrefix, toUnicodeRef); + writer.addToBody(pobj, ref); + } + + /** A forbidden operation. Will throw a null pointer exception. + * @param text the text + * @return always null + */ + byte[] convertToBytes(String text) + { + return null; + } + + /** + * Checks if a character exists in this font. + * @param c the character to check + * @return true if the character has a glyph, + * false otherwise + */ + public boolean charExists(char c) { + HashMap map = null; + if (fontSpecific) + map = cmap10; + else + map = cmap31; + if (map == null) + return false; + if (fontSpecific) { + if ((c & 0xff00) == 0 || (c & 0xff00) == 0xf000) + return map.get(new Integer(c & 0xff)) != null; + else + return false; + } + else + return map.get(new Integer(c)) != null; + } + + /** + * Sets the character advance. + * @param c the character + * @param advance the character advance normalized to 1000 units + * @return true if the advance was set, + * false otherwise + */ + public boolean setCharAdvance(char c, int advance) { + HashMap map = null; + if (fontSpecific) + map = cmap10; + else + map = cmap31; + if (map == null) + return false; + int m[] = null; + if (fontSpecific) { + if ((c & 0xff00) == 0 || (c & 0xff00) == 0xf000) + m = (int[])map.get(new Integer(c & 0xff)); + else + return false; + } + else + m = (int[])map.get(new Integer(c)); + if (m == null) + return false; + else + m[1] = advance; + return true; + } + + public int[] getCharBBox(char c) { + if (bboxes == null) + return null; + HashMap map = null; + if (fontSpecific) + map = cmap10; + else + map = cmap31; + if (map == null) + return null; + int m[] = null; + if (fontSpecific) { + if ((c & 0xff00) == 0 || (c & 0xff00) == 0xf000) + m = (int[])map.get(new Integer(c & 0xff)); + else + return null; + } + else + m = (int[])map.get(new Integer(c)); + if (m == null) + return null; + return bboxes[m[0]]; + } +} -- cgit v1.2.3