diff options
Diffstat (limited to 'src/main/java/com/lowagie/text/pdf/TrueTypeFont.java')
| -rw-r--r-- | src/main/java/com/lowagie/text/pdf/TrueTypeFont.java | 1377 |
1 files changed, 0 insertions, 1377 deletions
diff --git a/src/main/java/com/lowagie/text/pdf/TrueTypeFont.java b/src/main/java/com/lowagie/text/pdf/TrueTypeFont.java deleted file mode 100644 index 8551cfc..0000000 --- a/src/main/java/com/lowagie/text/pdf/TrueTypeFont.java +++ /dev/null @@ -1,1377 +0,0 @@ -/*
- * $Id: TrueTypeFont.java,v 1.58 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.*;
-import java.util.HashMap;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.Map;
-import com.lowagie.text.DocumentException;
-import com.lowagie.text.ExceptionConverter;
-/** Reads a Truetype font
- *
- * @author Paulo Soares (psoares@consiste.pt)
- */
-class TrueTypeFont extends BaseFont {
-
- /** The code pages possible for a True Type font.
- */
- static final String codePages[] = {
- "1252 Latin 1",
- "1250 Latin 2: Eastern Europe",
- "1251 Cyrillic",
- "1253 Greek",
- "1254 Turkish",
- "1255 Hebrew",
- "1256 Arabic",
- "1257 Windows Baltic",
- "1258 Vietnamese",
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- "874 Thai",
- "932 JIS/Japan",
- "936 Chinese: Simplified chars--PRC and Singapore",
- "949 Korean Wansung",
- "950 Chinese: Traditional chars--Taiwan and Hong Kong",
- "1361 Korean Johab",
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- "Macintosh Character Set (US Roman)",
- "OEM Character Set",
- "Symbol Character Set",
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- null,
- "869 IBM Greek",
- "866 MS-DOS Russian",
- "865 MS-DOS Nordic",
- "864 Arabic",
- "863 MS-DOS Canadian French",
- "862 Hebrew",
- "861 MS-DOS Icelandic",
- "860 MS-DOS Portuguese",
- "857 IBM Turkish",
- "855 IBM Cyrillic; primarily Russian",
- "852 Latin 2",
- "775 MS-DOS Baltic",
- "737 Greek; former 437 G",
- "708 Arabic; ASMO 708",
- "850 WE/Latin 1",
- "437 US"};
-
- protected boolean justNames = false;
- /** Contains the location of the several tables. The key is the name of
- * the table and the value is an <CODE>int[2]</CODE> where position 0
- * is the offset from the start of the file and position 1 is the length
- * of the table.
- */
- protected HashMap tables;
- /** The file in use.
- */
- protected RandomAccessFileOrArray rf;
- /** The file name.
- */
- protected String fileName;
-
- protected boolean cff = false;
-
- protected int cffOffset;
-
- protected int cffLength;
-
- /** The offset from the start of the file to the table directory.
- * It is 0 for TTF and may vary for TTC depending on the chosen font.
- */
- protected int directoryOffset;
- /** The index for the TTC font. It is an empty <CODE>String</CODE> for a
- * TTF file.
- */
- protected String ttcIndex;
- /** The style modifier */
- protected String style = "";
- /** The content of table 'head'.
- */
- protected FontHeader head = new FontHeader();
- /** The content of table 'hhea'.
- */
- protected HorizontalHeader hhea = new HorizontalHeader();
- /** The content of table 'OS/2'.
- */
- protected WindowsMetrics os_2 = new WindowsMetrics();
- /** The width of the glyphs. This is essentially the content of table
- * 'hmtx' normalized to 1000 units.
- */
- protected int GlyphWidths[];
-
- protected int bboxes[][];
- /** The map containing the code information for the table 'cmap', encoding 1.0.
- * The key is the code and the value is an <CODE>int[2]</CODE> where position 0
- * is the glyph number and position 1 is the glyph width normalized to 1000
- * units.
- */
- protected HashMap cmap10;
- /** The map containing the code information for the table 'cmap', encoding 3.1
- * in Unicode.
- * <P>
- * The key is the code and the value is an <CODE>int</CODE>[2] where position 0
- * is the glyph number and position 1 is the glyph width normalized to 1000
- * units.
- */
- protected HashMap cmap31;
- /** The map containing the kerning information. It represents the content of
- * table 'kern'. The key is an <CODE>Integer</CODE> where the top 16 bits
- * are the glyph number for the first character and the lower 16 bits are the
- * glyph number for the second character. The value is the amount of kerning in
- * normalized 1000 units as an <CODE>Integer</CODE>. This value is usually negative.
- */
- protected IntHashtable kerning = new IntHashtable();
- /**
- * The font name.
- * This name is usually extracted from the table 'name' with
- * the 'Name ID' 6.
- */
- protected String fontName;
-
- /** The full name of the font
- */
- protected String fullName[][];
-
- /** The family name of the font
- */
- protected String familyName[][];
- /** The italic angle. It is usually extracted from the 'post' table or in it's
- * absence with the code:
- * <P>
- * <PRE>
- * -Math.atan2(hhea.caretSlopeRun, hhea.caretSlopeRise) * 180 / Math.PI
- * </PRE>
- */
- protected double italicAngle;
- /** <CODE>true</CODE> if all the glyphs have the same width.
- */
- protected boolean isFixedPitch = false;
-
- /** The components of table 'head'.
- */
- protected static class FontHeader {
- /** A variable. */
- int flags;
- /** A variable. */
- int unitsPerEm;
- /** A variable. */
- short xMin;
- /** A variable. */
- short yMin;
- /** A variable. */
- short xMax;
- /** A variable. */
- short yMax;
- /** A variable. */
- int macStyle;
- }
-
- /** The components of table 'hhea'.
- */
- protected static class HorizontalHeader {
- /** A variable. */
- short Ascender;
- /** A variable. */
- short Descender;
- /** A variable. */
- short LineGap;
- /** A variable. */
- int advanceWidthMax;
- /** A variable. */
- short minLeftSideBearing;
- /** A variable. */
- short minRightSideBearing;
- /** A variable. */
- short xMaxExtent;
- /** A variable. */
- short caretSlopeRise;
- /** A variable. */
- short caretSlopeRun;
- /** A variable. */
- int numberOfHMetrics;
- }
-
- /** The components of table 'OS/2'.
- */
- protected static class WindowsMetrics {
- /** A variable. */
- short xAvgCharWidth;
- /** A variable. */
- int usWeightClass;
- /** A variable. */
- int usWidthClass;
- /** A variable. */
- short fsType;
- /** A variable. */
- short ySubscriptXSize;
- /** A variable. */
- short ySubscriptYSize;
- /** A variable. */
- short ySubscriptXOffset;
- /** A variable. */
- short ySubscriptYOffset;
- /** A variable. */
- short ySuperscriptXSize;
- /** A variable. */
- short ySuperscriptYSize;
- /** A variable. */
- short ySuperscriptXOffset;
- /** A variable. */
- short ySuperscriptYOffset;
- /** A variable. */
- short yStrikeoutSize;
- /** A variable. */
- short yStrikeoutPosition;
- /** A variable. */
- short sFamilyClass;
- /** A variable. */
- byte panose[] = new byte[10];
- /** A variable. */
- byte achVendID[] = new byte[4];
- /** A variable. */
- int fsSelection;
- /** A variable. */
- int usFirstCharIndex;
- /** A variable. */
- int usLastCharIndex;
- /** A variable. */
- short sTypoAscender;
- /** A variable. */
- short sTypoDescender;
- /** A variable. */
- short sTypoLineGap;
- /** A variable. */
- int usWinAscent;
- /** A variable. */
- int usWinDescent;
- /** A variable. */
- int ulCodePageRange1;
- /** A variable. */
- int ulCodePageRange2;
- /** A variable. */
- int sCapHeight;
- }
-
- /** This constructor is present to allow extending the class.
- */
- protected TrueTypeFont() {
- }
-
- TrueTypeFont(String ttFile, String enc, boolean emb, byte ttfAfm[]) throws DocumentException, IOException {
- this(ttFile, enc, emb, ttfAfm, false);
- }
-
- /** Creates a new TrueType font.
- * @param ttFile the location of the font on file. The file must end in '.ttf' or
- * '.ttc' but can have modifiers after the name
- * @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
- */
- TrueTypeFont(String ttFile, String enc, boolean emb, byte ttfAfm[], boolean justNames) throws DocumentException, IOException {
- this.justNames = justNames;
- String nameBase = getBaseName(ttFile);
- String ttcName = getTTCName(nameBase);
- if (nameBase.length() < ttFile.length()) {
- style = ttFile.substring(nameBase.length());
- }
- encoding = enc;
- embedded = emb;
- fileName = ttcName;
- fontType = FONT_TYPE_TT;
- ttcIndex = "";
- if (ttcName.length() < nameBase.length())
- ttcIndex = nameBase.substring(ttcName.length() + 1);
- if (fileName.toLowerCase().endsWith(".ttf") || fileName.toLowerCase().endsWith(".otf") || fileName.toLowerCase().endsWith(".ttc")) {
- process(ttfAfm);
- if (!justNames && embedded && os_2.fsType == 2)
- throw new DocumentException(fileName + style + " cannot be embedded due to licensing restrictions.");
- }
- else
- throw new DocumentException(fileName + style + " is not a TTF, OTF or TTC font file.");
- PdfEncodings.convertToBytes(" ", enc); // check if the encoding exists
- createEncoding();
- }
-
- /** Gets the name from a composed TTC file name.
- * If I have for input "myfont.ttc,2" the return will
- * be "myfont.ttc".
- * @param name the full name
- * @return the simple file name
- */
- protected static String getTTCName(String name) {
- int idx = name.toLowerCase().indexOf(".ttc,");
- if (idx < 0)
- return name;
- else
- return name.substring(0, idx + 4);
- }
-
-
- /**
- * Reads the tables 'head', 'hhea', 'OS/2' and 'post' filling several variables.
- * @throws DocumentException the font is invalid
- * @throws IOException the font file could not be read
- */
- void fillTables() throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("head");
- if (table_location == null)
- throw new DocumentException("Table 'head' does not exist in " + fileName + style);
- rf.seek(table_location[0] + 16);
- head.flags = rf.readUnsignedShort();
- head.unitsPerEm = rf.readUnsignedShort();
- rf.skipBytes(16);
- head.xMin = rf.readShort();
- head.yMin = rf.readShort();
- head.xMax = rf.readShort();
- head.yMax = rf.readShort();
- head.macStyle = rf.readUnsignedShort();
-
- table_location = (int[])tables.get("hhea");
- if (table_location == null)
- throw new DocumentException("Table 'hhea' does not exist " + fileName + style);
- rf.seek(table_location[0] + 4);
- hhea.Ascender = rf.readShort();
- hhea.Descender = rf.readShort();
- hhea.LineGap = rf.readShort();
- hhea.advanceWidthMax = rf.readUnsignedShort();
- hhea.minLeftSideBearing = rf.readShort();
- hhea.minRightSideBearing = rf.readShort();
- hhea.xMaxExtent = rf.readShort();
- hhea.caretSlopeRise = rf.readShort();
- hhea.caretSlopeRun = rf.readShort();
- rf.skipBytes(12);
- hhea.numberOfHMetrics = rf.readUnsignedShort();
-
- table_location = (int[])tables.get("OS/2");
- if (table_location == null)
- throw new DocumentException("Table 'OS/2' does not exist in " + fileName + style);
- rf.seek(table_location[0]);
- int version = rf.readUnsignedShort();
- os_2.xAvgCharWidth = rf.readShort();
- os_2.usWeightClass = rf.readUnsignedShort();
- os_2.usWidthClass = rf.readUnsignedShort();
- os_2.fsType = rf.readShort();
- os_2.ySubscriptXSize = rf.readShort();
- os_2.ySubscriptYSize = rf.readShort();
- os_2.ySubscriptXOffset = rf.readShort();
- os_2.ySubscriptYOffset = rf.readShort();
- os_2.ySuperscriptXSize = rf.readShort();
- os_2.ySuperscriptYSize = rf.readShort();
- os_2.ySuperscriptXOffset = rf.readShort();
- os_2.ySuperscriptYOffset = rf.readShort();
- os_2.yStrikeoutSize = rf.readShort();
- os_2.yStrikeoutPosition = rf.readShort();
- os_2.sFamilyClass = rf.readShort();
- rf.readFully(os_2.panose);
- rf.skipBytes(16);
- rf.readFully(os_2.achVendID);
- os_2.fsSelection = rf.readUnsignedShort();
- os_2.usFirstCharIndex = rf.readUnsignedShort();
- os_2.usLastCharIndex = rf.readUnsignedShort();
- os_2.sTypoAscender = rf.readShort();
- os_2.sTypoDescender = rf.readShort();
- if (os_2.sTypoDescender > 0)
- os_2.sTypoDescender = (short)(-os_2.sTypoDescender);
- os_2.sTypoLineGap = rf.readShort();
- os_2.usWinAscent = rf.readUnsignedShort();
- os_2.usWinDescent = rf.readUnsignedShort();
- os_2.ulCodePageRange1 = 0;
- os_2.ulCodePageRange2 = 0;
- if (version > 0) {
- os_2.ulCodePageRange1 = rf.readInt();
- os_2.ulCodePageRange2 = rf.readInt();
- }
- if (version > 1) {
- rf.skipBytes(2);
- os_2.sCapHeight = rf.readShort();
- }
- else
- os_2.sCapHeight = (int)(0.7 * head.unitsPerEm);
-
- table_location = (int[])tables.get("post");
- if (table_location == null) {
- italicAngle = -Math.atan2(hhea.caretSlopeRun, hhea.caretSlopeRise) * 180 / Math.PI;
- return;
- }
- rf.seek(table_location[0] + 4);
- short mantissa = rf.readShort();
- int fraction = rf.readUnsignedShort();
- italicAngle = (double)mantissa + (double)fraction / 16384.0;
- rf.skipBytes(4);
- isFixedPitch = rf.readInt() != 0;
- }
-
- /**
- * Gets the Postscript font name.
- * @throws DocumentException the font is invalid
- * @throws IOException the font file could not be read
- * @return the Postscript font name
- */
- String getBaseFont() throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("name");
- if (table_location == null)
- throw new DocumentException("Table 'name' does not exist in " + fileName + style);
- rf.seek(table_location[0] + 2);
- int numRecords = rf.readUnsignedShort();
- int startOfStorage = rf.readUnsignedShort();
- for (int k = 0; k < numRecords; ++k) {
- int platformID = rf.readUnsignedShort();
- int platformEncodingID = rf.readUnsignedShort();
- int languageID = rf.readUnsignedShort();
- int nameID = rf.readUnsignedShort();
- int length = rf.readUnsignedShort();
- int offset = rf.readUnsignedShort();
- if (nameID == 6) {
- rf.seek(table_location[0] + startOfStorage + offset);
- if (platformID == 0 || platformID == 3)
- return readUnicodeString(length);
- else
- return readStandardString(length);
- }
- }
- File file = new File(fileName);
- return file.getName().replace(' ', '-');
- }
-
- /** Extracts the names of the font in all the languages available.
- * @param id the name id to retrieve
- * @throws DocumentException on error
- * @throws IOException on error
- */
- String[][] getNames(int id) throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("name");
- if (table_location == null)
- throw new DocumentException("Table 'name' does not exist in " + fileName + style);
- rf.seek(table_location[0] + 2);
- int numRecords = rf.readUnsignedShort();
- int startOfStorage = rf.readUnsignedShort();
- ArrayList names = new ArrayList();
- for (int k = 0; k < numRecords; ++k) {
- int platformID = rf.readUnsignedShort();
- int platformEncodingID = rf.readUnsignedShort();
- int languageID = rf.readUnsignedShort();
- int nameID = rf.readUnsignedShort();
- int length = rf.readUnsignedShort();
- int offset = rf.readUnsignedShort();
- if (nameID == id) {
- int pos = rf.getFilePointer();
- rf.seek(table_location[0] + startOfStorage + offset);
- String name;
- if (platformID == 0 || platformID == 3 || (platformID == 2 && platformEncodingID == 1)){
- name = readUnicodeString(length);
- }
- else {
- name = readStandardString(length);
- }
- names.add(new String[]{String.valueOf(platformID),
- String.valueOf(platformEncodingID), String.valueOf(languageID), name});
- rf.seek(pos);
- }
- }
- String thisName[][] = new String[names.size()][];
- for (int k = 0; k < names.size(); ++k)
- thisName[k] = (String[])names.get(k);
- return thisName;
- }
-
- void checkCff() throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("CFF ");
- if (table_location != null) {
- cff = true;
- cffOffset = table_location[0];
- cffLength = table_location[1];
- }
- }
-
- /** Reads the font data.
- * @param ttfAfm the font as a <CODE>byte</CODE> array, possibly <CODE>null</CODE>
- * @throws DocumentException the font is invalid
- * @throws IOException the font file could not be read
- */
- void process(byte ttfAfm[]) throws DocumentException, IOException {
- tables = new HashMap();
-
- try {
- if (ttfAfm == null)
- rf = new RandomAccessFileOrArray(fileName);
- else
- rf = new RandomAccessFileOrArray(ttfAfm);
- if (ttcIndex.length() > 0) {
- int dirIdx = Integer.parseInt(ttcIndex);
- if (dirIdx < 0)
- throw new DocumentException("The font index for " + fileName + " must be positive.");
- String mainTag = readStandardString(4);
- if (!mainTag.equals("ttcf"))
- throw new DocumentException(fileName + " is not a valid TTC file.");
- rf.skipBytes(4);
- int dirCount = rf.readInt();
- if (dirIdx >= dirCount)
- throw new DocumentException("The font index for " + fileName + " must be between 0 and " + (dirCount - 1) + ". It was " + dirIdx + ".");
- rf.skipBytes(dirIdx * 4);
- directoryOffset = rf.readInt();
- }
- rf.seek(directoryOffset);
- int ttId = rf.readInt();
- if (ttId != 0x00010000 && ttId != 0x4F54544F)
- throw new DocumentException(fileName + " is not a valid TTF or OTF file.");
- int num_tables = rf.readUnsignedShort();
- rf.skipBytes(6);
- for (int k = 0; k < num_tables; ++k) {
- String tag = readStandardString(4);
- rf.skipBytes(4);
- int table_location[] = new int[2];
- table_location[0] = rf.readInt();
- table_location[1] = rf.readInt();
- tables.put(tag, table_location);
- }
- checkCff();
- fontName = getBaseFont();
- fullName = getNames(4); //full name
- familyName = getNames(1); //family name
- if (!justNames) {
- fillTables();
- readGlyphWidths();
- readCMaps();
- readKerning();
- readBbox();
- GlyphWidths = null;
- }
- }
- finally {
- if (rf != null) {
- rf.close();
- if (!embedded)
- rf = null;
- }
- }
- }
-
- /** Reads a <CODE>String</CODE> from the font file as bytes using the Cp1252
- * encoding.
- * @param length the length of bytes to read
- * @return the <CODE>String</CODE> read
- * @throws IOException the font file could not be read
- */
- protected String readStandardString(int length) throws IOException {
- byte buf[] = new byte[length];
- rf.readFully(buf);
- try {
- return new String(buf, WINANSI);
- }
- catch (Exception e) {
- throw new ExceptionConverter(e);
- }
- }
-
- /** Reads a Unicode <CODE>String</CODE> from the font file. Each character is
- * represented by two bytes.
- * @param length the length of bytes to read. The <CODE>String</CODE> will have <CODE>length</CODE>/2
- * characters
- * @return the <CODE>String</CODE> read
- * @throws IOException the font file could not be read
- */
- protected String readUnicodeString(int length) throws IOException {
- StringBuffer buf = new StringBuffer();
- length /= 2;
- for (int k = 0; k < length; ++k) {
- buf.append(rf.readChar());
- }
- return buf.toString();
- }
-
- /** Reads the glyphs widths. The widths are extracted from the table 'hmtx'.
- * The glyphs are normalized to 1000 units.
- * @throws DocumentException the font is invalid
- * @throws IOException the font file could not be read
- */
- protected void readGlyphWidths() throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("hmtx");
- if (table_location == null)
- throw new DocumentException("Table 'hmtx' does not exist in " + fileName + style);
- rf.seek(table_location[0]);
- GlyphWidths = new int[hhea.numberOfHMetrics];
- for (int k = 0; k < hhea.numberOfHMetrics; ++k) {
- GlyphWidths[k] = (rf.readUnsignedShort() * 1000) / head.unitsPerEm;
- rf.readUnsignedShort();
- }
- }
-
- /** Gets a glyph width.
- * @param glyph the glyph to get the width of
- * @return the width of the glyph in normalized 1000 units
- */
- protected int getGlyphWidth(int glyph) {
- if (glyph >= GlyphWidths.length)
- glyph = GlyphWidths.length - 1;
- return GlyphWidths[glyph];
- }
-
- private void readBbox() throws DocumentException, IOException {
- int tableLocation[];
- tableLocation = (int[])tables.get("head");
- if (tableLocation == null)
- throw new DocumentException("Table 'head' does not exist in " + fileName + style);
- rf.seek(tableLocation[0] + TrueTypeFontSubSet.HEAD_LOCA_FORMAT_OFFSET);
- boolean locaShortTable = (rf.readUnsignedShort() == 0);
- tableLocation = (int[])tables.get("loca");
- if (tableLocation == null)
- return;
- rf.seek(tableLocation[0]);
- int locaTable[];
- if (locaShortTable) {
- int entries = tableLocation[1] / 2;
- locaTable = new int[entries];
- for (int k = 0; k < entries; ++k)
- locaTable[k] = rf.readUnsignedShort() * 2;
- }
- else {
- int entries = tableLocation[1] / 4;
- locaTable = new int[entries];
- for (int k = 0; k < entries; ++k)
- locaTable[k] = rf.readInt();
- }
- tableLocation = (int[])tables.get("glyf");
- if (tableLocation == null)
- throw new DocumentException("Table 'glyf' does not exist in " + fileName + style);
- int tableGlyphOffset = tableLocation[0];
- bboxes = new int[locaTable.length - 1][];
- for (int glyph = 0; glyph < locaTable.length - 1; ++glyph) {
- int start = locaTable[glyph];
- if (start != locaTable[glyph + 1]) {
- rf.seek(tableGlyphOffset + start + 2);
- bboxes[glyph] = new int[]{
- (rf.readShort() * 1000) / head.unitsPerEm,
- (rf.readShort() * 1000) / head.unitsPerEm,
- (rf.readShort() * 1000) / head.unitsPerEm,
- (rf.readShort() * 1000) / head.unitsPerEm};
- }
- }
- }
-
- /** Reads the several maps from the table 'cmap'. The maps of interest are 1.0 for symbolic
- * fonts and 3.1 for all others. A symbolic font is defined as having the map 3.0.
- * @throws DocumentException the font is invalid
- * @throws IOException the font file could not be read
- */
- void readCMaps() throws DocumentException, IOException {
- int table_location[];
- table_location = (int[])tables.get("cmap");
- if (table_location == null)
- throw new DocumentException("Table 'cmap' does not exist in " + fileName + style);
- rf.seek(table_location[0]);
- rf.skipBytes(2);
- int num_tables = rf.readUnsignedShort();
- fontSpecific = false;
- int map10 = 0;
- int map31 = 0;
- int map30 = 0;
- for (int k = 0; k < num_tables; ++k) {
- int platId = rf.readUnsignedShort();
- int platSpecId = rf.readUnsignedShort();
- int offset = rf.readInt();
- if (platId == 3 && platSpecId == 0) {
- fontSpecific = true;
- map30 = offset;
- }
- else if (platId == 3 && platSpecId == 1) {
- map31 = offset;
- }
- if (platId == 1 && platSpecId == 0) {
- map10 = offset;
- }
- }
- if (map10 > 0) {
- rf.seek(table_location[0] + map10);
- int format = rf.readUnsignedShort();
- switch (format) {
- case 0:
- cmap10 = readFormat0();
- break;
- case 4:
- cmap10 = readFormat4();
- break;
- case 6:
- cmap10 = readFormat6();
- break;
- }
- }
- if (map31 > 0) {
- rf.seek(table_location[0] + map31);
- int format = rf.readUnsignedShort();
- if (format == 4) {
- cmap31 = readFormat4();
- }
- }
- if (map30 > 0) {
- rf.seek(table_location[0] + map30);
- int format = rf.readUnsignedShort();
- if (format == 4) {
- cmap10 = readFormat4();
- }
- }
- }
-
- /** The information in the maps of the table 'cmap' is coded in several formats.
- * Format 0 is the Apple standard character to glyph index mapping table.
- * @return a <CODE>HashMap</CODE> representing this map
- * @throws IOException the font file could not be read
- */
- HashMap readFormat0() throws IOException {
- HashMap h = new HashMap();
- rf.skipBytes(4);
- for (int k = 0; k < 256; ++k) {
- int r[] = new int[2];
- r[0] = rf.readUnsignedByte();
- r[1] = getGlyphWidth(r[0]);
- h.put(new Integer(k), r);
- }
- return h;
- }
-
- /** The information in the maps of the table 'cmap' is coded in several formats.
- * Format 4 is the Microsoft standard character to glyph index mapping table.
- * @return a <CODE>HashMap</CODE> representing this map
- * @throws IOException the font file could not be read
- */
- HashMap readFormat4() throws IOException {
- HashMap h = new HashMap();
- int table_lenght = rf.readUnsignedShort();
- rf.skipBytes(2);
- int segCount = rf.readUnsignedShort() / 2;
- rf.skipBytes(6);
- int endCount[] = new int[segCount];
- for (int k = 0; k < segCount; ++k) {
- endCount[k] = rf.readUnsignedShort();
- }
- rf.skipBytes(2);
- int startCount[] = new int[segCount];
- for (int k = 0; k < segCount; ++k) {
- startCount[k] = rf.readUnsignedShort();
- }
- int idDelta[] = new int[segCount];
- for (int k = 0; k < segCount; ++k) {
- idDelta[k] = rf.readUnsignedShort();
- }
- int idRO[] = new int[segCount];
- for (int k = 0; k < segCount; ++k) {
- idRO[k] = rf.readUnsignedShort();
- }
- int glyphId[] = new int[table_lenght / 2 - 8 - segCount * 4];
- for (int k = 0; k < glyphId.length; ++k) {
- glyphId[k] = rf.readUnsignedShort();
- }
- for (int k = 0; k < segCount; ++k) {
- int glyph;
- for (int j = startCount[k]; j <= endCount[k] && j != 0xFFFF; ++j) {
- if (idRO[k] == 0) {
- glyph = (j + idDelta[k]) & 0xFFFF;
- }
- else {
- int idx = k + idRO[k] / 2 - segCount + j - startCount[k];
- if (idx >= glyphId.length)
- continue;
- glyph = (glyphId[idx] + idDelta[k]) & 0xFFFF;
- }
- int r[] = new int[2];
- r[0] = glyph;
- r[1] = getGlyphWidth(r[0]);
- h.put(new Integer(fontSpecific ? ((j & 0xff00) == 0xf000 ? j & 0xff : j) : j), r);
- }
- }
- return h;
- }
-
- /** The information in the maps of the table 'cmap' is coded in several formats.
- * Format 6 is a trimmed table mapping. It is similar to format 0 but can have
- * less than 256 entries.
- * @return a <CODE>HashMap</CODE> representing this map
- * @throws IOException the font file could not be read
- */
- HashMap readFormat6() throws IOException {
- HashMap h = new HashMap();
- rf.skipBytes(4);
- int start_code = rf.readUnsignedShort();
- int code_count = rf.readUnsignedShort();
- for (int k = 0; k < code_count; ++k) {
- int r[] = new int[2];
- r[0] = rf.readUnsignedShort();
- r[1] = getGlyphWidth(r[0]);
- h.put(new Integer(k + start_code), r);
- }
- return h;
- }
-
- /** Reads the kerning information from the 'kern' table.
- * @throws IOException the font file could not be read
- */
- void readKerning() throws IOException {
- int table_location[];
- table_location = (int[])tables.get("kern");
- if (table_location == null)
- return;
- rf.seek(table_location[0] + 2);
- int nTables = rf.readUnsignedShort();
- int checkpoint = table_location[0] + 4;
- int length = 0;
- for (int k = 0; k < nTables; ++k) {
- checkpoint += length;
- rf.seek(checkpoint);
- rf.skipBytes(2);
- length = rf.readUnsignedShort();
- int coverage = rf.readUnsignedShort();
- if ((coverage & 0xfff7) == 0x0001) {
- int nPairs = rf.readUnsignedShort();
- rf.skipBytes(6);
- for (int j = 0; j < nPairs; ++j) {
- int pair = rf.readInt();
- int value = ((int)rf.readShort() * 1000) / head.unitsPerEm;
- kerning.put(pair, value);
- }
- }
- }
- }
-
- /** Gets the kerning between two Unicode chars.
- * @param char1 the first char
- * @param char2 the second char
- * @return the kerning to be applied
- */
- public int getKerning(char char1, char char2) {
- int metrics[] = getMetricsTT(char1);
- if (metrics == null)
- return 0;
- int c1 = metrics[0];
- metrics = getMetricsTT(char2);
- if (metrics == null)
- return 0;
- int c2 = metrics[0];
- return kerning.get((c1 << 16) + c2);
- }
-
- /** Gets the width from the font according to the unicode char <CODE>c</CODE>.
- * If the <CODE>name</CODE> is null it's a symbolic font.
- * @param c the unicode char
- * @param name the glyph name
- * @return the width of the char
- */
- int getRawWidth(int c, String name) {
- HashMap map = null;
- if (name == null || cmap31 == null)
- map = cmap10;
- else
- map = cmap31;
- if (map == null)
- return 0;
- int metric[] = (int[])map.get(new Integer(c));
- if (metric == null)
- return 0;
- return metric[1];
- }
-
- /** Generates the font descriptor for this font.
- * @return the PdfDictionary containing the font descriptor or <CODE>null</CODE>
- * @param subsetPrefix the subset prefix
- * @param fontStream the indirect reference to a PdfStream containing the font or <CODE>null</CODE>
- * @throws DocumentException if there is an error
- */
- protected PdfDictionary getFontDescriptor(PdfIndirectReference fontStream, String subsetPrefix) throws DocumentException {
- PdfDictionary dic = new PdfDictionary(PdfName.FONTDESCRIPTOR);
- dic.put(PdfName.ASCENT, new PdfNumber((int)os_2.sTypoAscender * 1000 / head.unitsPerEm));
- dic.put(PdfName.CAPHEIGHT, new PdfNumber((int)os_2.sCapHeight * 1000 / head.unitsPerEm));
- dic.put(PdfName.DESCENT, new PdfNumber((int)os_2.sTypoDescender * 1000 / head.unitsPerEm));
- dic.put(PdfName.FONTBBOX, new PdfRectangle(
- (int)head.xMin * 1000 / head.unitsPerEm,
- (int)head.yMin * 1000 / head.unitsPerEm,
- (int)head.xMax * 1000 / head.unitsPerEm,
- (int)head.yMax * 1000 / head.unitsPerEm));
- if (cff) {
- if (encoding.startsWith("Identity-"))
- dic.put(PdfName.FONTNAME, new PdfName(subsetPrefix + fontName+"-"+encoding));
- else
- dic.put(PdfName.FONTNAME, new PdfName(subsetPrefix + fontName + style));
- }
- else
- dic.put(PdfName.FONTNAME, new PdfName(subsetPrefix + fontName + style));
- dic.put(PdfName.ITALICANGLE, new PdfNumber(italicAngle));
- dic.put(PdfName.STEMV, new PdfNumber(80));
- if (fontStream != null) {
- if (cff)
- dic.put(PdfName.FONTFILE3, fontStream);
- else
- dic.put(PdfName.FONTFILE2, fontStream);
- }
- int flags = 0;
- if (isFixedPitch)
- flags |= 1;
- flags |= fontSpecific ? 4 : 32;
- if ((head.macStyle & 2) != 0)
- flags |= 64;
- if ((head.macStyle & 1) != 0)
- flags |= 262144;
- dic.put(PdfName.FLAGS, new PdfNumber(flags));
-
- return dic;
- }
-
- /** Generates the font dictionary for this font.
- * @return the PdfDictionary containing the font dictionary
- * @param subsetPrefix the subset prefx
- * @param firstChar the first valid character
- * @param lastChar the last valid character
- * @param shortTag a 256 bytes long <CODE>byte</CODE> array where each unused byte is represented by 0
- * @param fontDescriptor the indirect reference to a PdfDictionary containing the font descriptor or <CODE>null</CODE>
- * @throws DocumentException if there is an error
- */
- protected PdfDictionary getFontBaseType(PdfIndirectReference fontDescriptor, String subsetPrefix, int firstChar, int lastChar, byte shortTag[]) throws DocumentException {
- PdfDictionary dic = new PdfDictionary(PdfName.FONT);
- if (cff) {
- dic.put(PdfName.SUBTYPE, PdfName.TYPE1);
- dic.put(PdfName.BASEFONT, new PdfName(fontName + style));
- }
- else {
- dic.put(PdfName.SUBTYPE, PdfName.TRUETYPE);
- dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix + fontName + style));
- }
- dic.put(PdfName.BASEFONT, new PdfName(subsetPrefix + fontName + style));
- if (!fontSpecific) {
- for (int k = firstChar; k <= lastChar; ++k) {
- if (!differences[k].equals(notdef)) {
- firstChar = k;
- break;
- }
- }
- if (encoding.equals("Cp1252") || encoding.equals("MacRoman"))
- dic.put(PdfName.ENCODING, encoding.equals("Cp1252") ? PdfName.WIN_ANSI_ENCODING : PdfName.MAC_ROMAN_ENCODING);
- else {
- PdfDictionary enc = new PdfDictionary(PdfName.ENCODING);
- PdfArray dif = new PdfArray();
- boolean gap = true;
- for (int k = firstChar; k <= lastChar; ++k) {
- if (shortTag[k] != 0) {
- if (gap) {
- dif.add(new PdfNumber(k));
- gap = false;
- }
- dif.add(new PdfName(differences[k]));
- }
- else
- gap = true;
- }
- enc.put(PdfName.DIFFERENCES, dif);
- dic.put(PdfName.ENCODING, enc);
- }
- }
- dic.put(PdfName.FIRSTCHAR, new PdfNumber(firstChar));
- dic.put(PdfName.LASTCHAR, new PdfNumber(lastChar));
- PdfArray wd = new PdfArray();
- for (int k = firstChar; k <= lastChar; ++k) {
- if (shortTag[k] == 0)
- wd.add(new PdfNumber(0));
- else
- wd.add(new PdfNumber(widths[k]));
- }
- dic.put(PdfName.WIDTHS, wd);
- if (fontDescriptor != null)
- dic.put(PdfName.FONTDESCRIPTOR, fontDescriptor);
- return dic;
- }
-
- protected byte[] getFullFont() throws IOException {
- RandomAccessFileOrArray rf2 = null;
- try {
- rf2 = new RandomAccessFileOrArray(rf);
- rf2.reOpen();
- byte b[] = new byte[rf2.length()];
- rf2.readFully(b);
- return b;
- }
- finally {
- try {rf2.close();} catch (Exception e) {}
- }
- }
-
- protected static int[] compactRanges(ArrayList ranges) {
- ArrayList simp = new ArrayList();
- for (int k = 0; k < ranges.size(); ++k) {
- int[] r = (int[])ranges.get(k);
- for (int j = 0; j < r.length; j += 2) {
- simp.add(new int[]{Math.max(0, Math.min(r[j], r[j + 1])), Math.min(0xffff, Math.max(r[j], r[j + 1]))});
- }
- }
- for (int k1 = 0; k1 < simp.size() - 1; ++k1) {
- for (int k2 = k1 + 1; k2 < simp.size(); ++k2) {
- int[] r1 = (int[])simp.get(k1);
- int[] r2 = (int[])simp.get(k2);
- if ((r1[0] >= r2[0] && r1[0] <= r2[1]) || (r1[1] >= r2[0] && r1[0] <= r2[1])) {
- r1[0] = Math.min(r1[0], r2[0]);
- r1[1] = Math.max(r1[1], r2[1]);
- simp.remove(k2);
- --k2;
- }
- }
- }
- int[] s = new int[simp.size() * 2];
- for (int k = 0; k < simp.size(); ++k) {
- int[] r = (int[])simp.get(k);
- s[k * 2] = r[0];
- s[k * 2 + 1] = r[1];
- }
- return s;
- }
-
- protected void addRangeUni(HashMap longTag, boolean includeMetrics, boolean subsetp) {
- if (!subsetp && (subsetRanges != null || directoryOffset > 0)) {
- int[] rg = (subsetRanges == null && directoryOffset > 0) ? new int[]{0, 0xffff} : compactRanges(subsetRanges);
- HashMap usemap;
- if (!fontSpecific && cmap31 != null)
- usemap = cmap31;
- else if (fontSpecific && cmap10 != null)
- usemap = cmap10;
- else if (cmap31 != null)
- usemap = cmap31;
- else
- usemap = cmap10;
- for (Iterator it = usemap.entrySet().iterator(); it.hasNext();) {
- Map.Entry e = (Map.Entry)it.next();
- int[] v = (int[])e.getValue();
- Integer gi = new Integer(v[0]);
- if (longTag.containsKey(gi))
- continue;
- int c = ((Integer)e.getKey()).intValue();
- boolean skip = true;
- for (int k = 0; k < rg.length; k += 2) {
- if (c >= rg[k] && c <= rg[k + 1]) {
- skip = false;
- break;
- }
- }
- if (!skip)
- longTag.put(gi, includeMetrics ? new int[]{v[0], v[1], c} : null);
- }
- }
- }
-
- /** 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 {
- int firstChar = ((Integer)params[0]).intValue();
- int lastChar = ((Integer)params[1]).intValue();
- byte shortTag[] = (byte[])params[2];
- boolean subsetp = ((Boolean)params[3]).booleanValue() && subset;
-
- if (!subsetp) {
- firstChar = 0;
- lastChar = shortTag.length - 1;
- for (int k = 0; k < shortTag.length; ++k)
- shortTag[k] = 1;
- }
- PdfIndirectReference ind_font = null;
- PdfObject pobj = null;
- PdfIndirectObject obj = null;
- String subsetPrefix = "";
- if (embedded) {
- 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
- }
- }
- pobj = new StreamFont(b, "Type1C");
- obj = writer.addToBody(pobj);
- ind_font = obj.getIndirectReference();
- }
- else {
- if (subsetp)
- subsetPrefix = createSubsetPrefix();
- HashMap glyphs = new HashMap();
- for (int k = firstChar; k <= lastChar; ++k) {
- if (shortTag[k] != 0) {
- int metrics[];
- if (fontSpecific)
- metrics = getMetricsTT(k);
- else
- metrics = getMetricsTT(unicodeDifferences[k]);
- if (metrics != null)
- glyphs.put(new Integer(metrics[0]), null);
- }
- }
- addRangeUni(glyphs, false, subsetp);
- byte[] b = null;
- if (subsetp || directoryOffset != 0 || subsetRanges != null) {
- TrueTypeFontSubSet sb = new TrueTypeFontSubSet(fileName, new RandomAccessFileOrArray(rf), glyphs, directoryOffset, true, !subsetp);
- 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();
- }
- }
- pobj = getFontDescriptor(ind_font, subsetPrefix);
- if (pobj != null){
- obj = writer.addToBody(pobj);
- ind_font = obj.getIndirectReference();
- }
- pobj = getFontBaseType(ind_font, subsetPrefix, firstChar, lastChar, shortTag);
- writer.addToBody(pobj, ref);
- }
-
- /** Gets the font parameter identified by <CODE>key</CODE>. Valid values
- * for <CODE>key</CODE> are <CODE>ASCENT</CODE>, <CODE>CAPHEIGHT</CODE>, <CODE>DESCENT</CODE>
- * and <CODE>ITALICANGLE</CODE>.
- * @param key the parameter to be extracted
- * @param fontSize the font size in points
- * @return the parameter in points
- */
- public float getFontDescriptor(int key, float fontSize) {
- switch (key) {
- case ASCENT:
- return (float)os_2.sTypoAscender * fontSize / (float)head.unitsPerEm;
- case CAPHEIGHT:
- return (float)os_2.sCapHeight * fontSize / (float)head.unitsPerEm;
- case DESCENT:
- return (float)os_2.sTypoDescender * fontSize / (float)head.unitsPerEm;
- case ITALICANGLE:
- return (float)italicAngle;
- case BBOXLLX:
- return fontSize * (int)head.xMin / head.unitsPerEm;
- case BBOXLLY:
- return fontSize * (int)head.yMin / head.unitsPerEm;
- case BBOXURX:
- return fontSize * (int)head.xMax / head.unitsPerEm;
- case BBOXURY:
- return fontSize * (int)head.yMax / head.unitsPerEm;
- case AWT_ASCENT:
- return fontSize * (int)hhea.Ascender / head.unitsPerEm;
- case AWT_DESCENT:
- return fontSize * (int)hhea.Descender / head.unitsPerEm;
- case AWT_LEADING:
- return fontSize * (int)hhea.LineGap / head.unitsPerEm;
- case AWT_MAXADVANCE:
- return fontSize * (int)hhea.advanceWidthMax / head.unitsPerEm;
- }
- return 0;
- }
-
- /** Gets the glyph index and metrics for a character.
- * @param c the character
- * @return an <CODE>int</CODE> array with {glyph index, width}
- */
- public int[] getMetricsTT(int c) {
- if (!fontSpecific && cmap31 != null)
- return (int[])cmap31.get(new Integer(c));
- if (fontSpecific && cmap10 != null)
- return (int[])cmap10.get(new Integer(c));
- if (cmap31 != null)
- return (int[])cmap31.get(new Integer(c));
- if (cmap10 != null)
- return (int[])cmap10.get(new Integer(c));
- return null;
- }
-
- /** Gets the postscript font name.
- * @return the postscript font name
- */
- public String getPostscriptFontName() {
- return fontName;
- }
-
- /** Gets the code pages supported by the font.
- * @return the code pages supported by the font
- */
- public String[] getCodePagesSupported() {
- long cp = (((long)os_2.ulCodePageRange2) << 32) + ((long)os_2.ulCodePageRange1 & 0xffffffffL);
- int count = 0;
- long bit = 1;
- for (int k = 0; k < 64; ++k) {
- if ((cp & bit) != 0 && codePages[k] != null)
- ++count;
- bit <<= 1;
- }
- String ret[] = new String[count];
- count = 0;
- bit = 1;
- for (int k = 0; k < 64; ++k) {
- if ((cp & bit) != 0 && codePages[k] != null)
- ret[count++] = codePages[k];
- bit <<= 1;
- }
- return ret;
- }
-
- /** Gets the full name of the font. If it is a True Type font
- * each array element will have {Platform ID, Platform Encoding ID,
- * Language ID, font name}. The interpretation of this values can be
- * found in the Open Type specification, chapter 2, in the 'name' table.<br>
- * For the other fonts the array has a single element with {"", "", "",
- * font name}.
- * @return the full name of the font
- */
- public String[][] getFullFontName() {
- return fullName;
- }
-
- /** Gets the family name of the font. If it is a True Type font
- * each array element will have {Platform ID, Platform Encoding ID,
- * Language ID, font name}. The interpretation of this values can be
- * found in the Open Type specification, chapter 2, in the 'name' table.<br>
- * For the other fonts the array has a single element with {"", "", "",
- * font name}.
- * @return the family name of the font
- */
- public String[][] getFamilyFontName() {
- return familyName;
- }
-
- /** Checks if the font has any kerning pairs.
- * @return <CODE>true</CODE> if the font has any kerning pairs
- */
- public boolean hasKernPairs() {
- return kerning.size() > 0;
- }
-
- /**
- * Sets the font name that will appear in the pdf font dictionary.
- * Use with care as it can easily make a font unreadable if not embedded.
- * @param name the new font name
- */
- public void setPostscriptFontName(String name) {
- fontName = name;
- }
-
- /**
- * Sets the kerning between two Unicode chars.
- * @param char1 the first char
- * @param char2 the second char
- * @param kern the kerning to apply in normalized 1000 units
- * @return <code>true</code> if the kerning was applied, <code>false</code> otherwise
- */
- public boolean setKerning(char char1, char char2, int kern) {
- int metrics[] = getMetricsTT(char1);
- if (metrics == null)
- return false;
- int c1 = metrics[0];
- metrics = getMetricsTT(char2);
- if (metrics == null)
- return false;
- int c2 = metrics[0];
- kerning.put((c1 << 16) + c2, kern);
- return true;
- }
-
- protected int[] getRawCharBBox(int c, String name) {
- HashMap map = null;
- if (name == null || cmap31 == null)
- map = cmap10;
- else
- map = cmap31;
- if (map == null)
- return null;
- int metric[] = (int[])map.get(new Integer(c));
- if (metric == null || bboxes == null)
- return null;
- return bboxes[metric[0]];
- }
-}
\ No newline at end of file |