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Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/TrueTypeFontUnicode.java | 456 |
1 files changed, 456 insertions, 0 deletions
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{
+
+ /** <CODE>true</CODE> 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 <CODE>byte</CODE> 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 <CODE>String</CODE> in normalized 1000 units.
+ * @param text the <CODE>String</CODE> 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 <CODE>null</CODE>
+ */
+ 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><FFFF>\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 <CODE>null</CODE>
+ */
+ byte[] convertToBytes(String text)
+ {
+ return null;
+ }
+
+ /**
+ * Checks if a character exists in this font.
+ * @param c the character to check
+ * @return <CODE>true</CODE> if the character has a glyph,
+ * <CODE>false</CODE> 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 <CODE>true</CODE> if the advance was set,
+ * <CODE>false</CODE> 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]];
+ }
+}
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