The key is the code and the value is an int[2] where position 0 is the glyph number and position 1 is the glyph width normalized to 1000 units. 

-Math.atan2(hhea.caretSlopeRun, hhea.caretSlopeRise) * 180 / Math.PI

 protected TrueTypeFont() 
{

}

This constructor is present to allow extending the class.

 TrueTypeFont(String ttFile,
    String enc,
    boolean emb,
    byte[] ttfAfm) throws IOException, DocumentException 
{
        this(ttFile, enc, emb, ttfAfm, false);
}

 TrueTypeFont(String ttFile,
    String enc,
    boolean emb,
    byte[] ttfAfm,
    boolean justNames) throws IOException, DocumentException 
{
        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.");
        if (!encoding.startsWith("#"))
            PdfEncodings.convertToBytes(" ", enc); // check if the encoding exists
        createEncoding();
}

Creates a new TrueType font.

Parameters:

ttFile - the location of the font on file. The file must end in '.ttf' or '.ttc' but can have modifiers after the name

enc - the encoding to be applied to this font

emb - true if the font is to be embedded in the PDF

ttfAfm - the font as a byte array

Throws:

DocumentException - the font is invalid

IOException - the font file could not be read

 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);
            }
        }
}

  void checkCff() 
{
        int table_location[];
        table_location = (int[])tables.get("CFF ");
        if (table_location != null) {
            cff = true;
            cffOffset = table_location[0];
            cffLength = table_location[1];
        }
}

 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;
}

  void fillTables() throws IOException, DocumentException 
{
        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 = mantissa + fraction / 16384.0d;
        underlinePosition = rf.readShort();
        underlineThickness = rf.readShort();
        isFixedPitch = rf.readInt() != 0;
}

Reads the tables 'head', 'hhea', 'OS/2' and 'post' filling several variables.

 public String[][] getAllNameEntries() 
{
        return allNameEntries;
}

Gets all the entries of the Names-Table. If it is a True Type font each array element will have {Name ID, 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.
For the other fonts the array has a single element with {"", "", "", font name}.

 String[][] getAllNames() throws IOException, DocumentException 
{
        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();
            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(nameID), 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;
}

Extracts all the names of the names-Table

 String getBaseFont() throws IOException, DocumentException 
{
        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(' ", '-");
}

Gets the Postscript font name.

 public String[] getCodePagesSupported() 
{
        long cp = (((long)os_2.ulCodePageRange2) < <  32) + (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 code pages supported by the font.

 public String[][] getFamilyFontName() 
{
        return familyName;
}

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.
For the other fonts the array has a single element with {"", "", "", font name}.

 protected PdfDictionary getFontBaseType(PdfIndirectReference fontDescriptor,
    String subsetPrefix,
    int firstChar,
    int lastChar,
    byte[] shortTag) 
{
        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;
}

Generates the font dictionary for this font.

 public float getFontDescriptor(int key,
    float fontSize) 
{
        switch (key) {
            case ASCENT:
                return os_2.sTypoAscender * fontSize / head.unitsPerEm;
            case CAPHEIGHT:
                return os_2.sCapHeight * fontSize / head.unitsPerEm;
            case DESCENT:
                return os_2.sTypoDescender * fontSize / head.unitsPerEm;
            case ITALICANGLE:
                return (float)italicAngle;
            case BBOXLLX:
                return fontSize * head.xMin / head.unitsPerEm;
            case BBOXLLY:
                return fontSize * head.yMin / head.unitsPerEm;
            case BBOXURX:
                return fontSize * head.xMax / head.unitsPerEm;
            case BBOXURY:
                return fontSize * head.yMax / head.unitsPerEm;
            case AWT_ASCENT:
                return fontSize * hhea.Ascender / head.unitsPerEm;
            case AWT_DESCENT:
                return fontSize * hhea.Descender / head.unitsPerEm;
            case AWT_LEADING:
                return fontSize * hhea.LineGap / head.unitsPerEm;
            case AWT_MAXADVANCE:
                return fontSize * hhea.advanceWidthMax / head.unitsPerEm;
            case UNDERLINE_POSITION:
                return (underlinePosition - underlineThickness / 2) * fontSize / head.unitsPerEm;
            case UNDERLINE_THICKNESS:
                return underlineThickness * fontSize / head.unitsPerEm;
            case STRIKETHROUGH_POSITION:
                return os_2.yStrikeoutPosition * fontSize / head.unitsPerEm;
            case STRIKETHROUGH_THICKNESS:
                return os_2.yStrikeoutSize * fontSize / head.unitsPerEm;
            case SUBSCRIPT_SIZE:
                return os_2.ySubscriptYSize * fontSize / head.unitsPerEm;
            case SUBSCRIPT_OFFSET:
                return -os_2.ySubscriptYOffset * fontSize / head.unitsPerEm;
            case SUPERSCRIPT_SIZE:
                return os_2.ySuperscriptYSize * fontSize / head.unitsPerEm;
            case SUPERSCRIPT_OFFSET:
                return os_2.ySuperscriptYOffset * fontSize / head.unitsPerEm;
        }
        return 0;
}

Gets the font parameter identified by key. Valid values for key are ASCENT, CAPHEIGHT, DESCENT and ITALICANGLE.

 protected PdfDictionary getFontDescriptor(PdfIndirectReference fontStream,
    String subsetPrefix,
    PdfIndirectReference cidset) 
{
        PdfDictionary dic = new PdfDictionary(PdfName.FONTDESCRIPTOR);
        dic.put(PdfName.ASCENT, new PdfNumber(os_2.sTypoAscender * 1000 / head.unitsPerEm));
        dic.put(PdfName.CAPHEIGHT, new PdfNumber(os_2.sCapHeight * 1000 / head.unitsPerEm));
        dic.put(PdfName.DESCENT, new PdfNumber(os_2.sTypoDescender * 1000 / head.unitsPerEm));
        dic.put(PdfName.FONTBBOX, new PdfRectangle(
        head.xMin * 1000 / head.unitsPerEm,
        head.yMin * 1000 / head.unitsPerEm,
        head.xMax * 1000 / head.unitsPerEm,
        head.yMax * 1000 / head.unitsPerEm));
        if (cidset != null)
            dic.put(PdfName.CIDSET, cidset);
        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 descriptor for this font.

 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 {if (rf2 != null) {rf2.close();}} catch (Exception e) {}
        }
}

 public String[][] getFullFontName() 
{
        return fullName;
}

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.
For the other fonts the array has a single element with {"", "", "", font name}.

 public PdfStream getFullFontStream() throws IOException, DocumentException 
{
        if (cff) {
            return new StreamFont(readCffFont(), "Type1C", compressionLevel);
        }
        else {
        	byte[] b = getFullFont();
        	int lengths[] = new int[]{b.length};
        	return new StreamFont(b, lengths, compressionLevel);
        }
}

Returns a PdfStream object with the full font program.

 protected int getGlyphWidth(int glyph) 
{
        if (glyph  >= GlyphWidths.length)
            glyph = GlyphWidths.length - 1;
        return GlyphWidths[glyph];
}

Gets a glyph width.

 public int getKerning(int char1,
    int 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 kerning between two Unicode chars.

 public int[] getMetricsTT(int c) 
{
        if (cmapExt != null)
            return (int[])cmapExt.get(new Integer(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 glyph index and metrics for a character.

 String[][] getNames(int id) throws IOException, DocumentException 
{
        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;
}

Extracts the names of the font in all the languages available.

 public String getPostscriptFontName() 
{
        return fontName;
}

Gets the postscript font name.

 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]];
}

 int getRawWidth(int c,
    String name) 
{
        int[] metric = getMetricsTT(c);
        if (metric == null)
            return 0;
        return metric[1];
}

Gets the width from the font according to the unicode char c. If the name is null it's a symbolic font.

 protected static String getTTCName(String name) 
{
        int idx = name.toLowerCase().indexOf(".ttc,");
        if (idx <  0)
            return name;
        else
            return name.substring(0, idx + 4);
}

Gets the name from a composed TTC file name. If I have for input "myfont.ttc,2" the return will be "myfont.ttc".

 public boolean hasKernPairs() 
{
        return kerning.size()  > 0;
}

Checks if the font has any kerning pairs.

  void process(byte[] ttfAfm) throws IOException, DocumentException 
{
        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
            allNameEntries = getAllNames();
            if (!justNames) {
                fillTables();
                readGlyphWidths();
                readCMaps();
                readKerning();
                readBbox();
                GlyphWidths = null;
            }
        }
        finally {
            if (rf != null) {
                rf.close();
                if (!embedded)
                    rf = null;
            }
        }
}

Reads the font data.

  void readCMaps() throws IOException, DocumentException 
{
        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;
        int mapExt = 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;
            }
            else if (platId == 3 && platSpecId == 10) {
                mapExt = 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();
            }
        }
        if (mapExt  > 0) {
            rf.seek(table_location[0] + mapExt);
            int format = rf.readUnsignedShort();
            switch (format) {
                case 0:
                    cmapExt = readFormat0();
                    break;
                case 4:
                    cmapExt = readFormat4();
                    break;
                case 6:
                    cmapExt = readFormat6();
                    break;
                case 12:
                    cmapExt = readFormat12();
                    break;
            }
        }
}

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.

 protected byte[] readCffFont() throws IOException 
{
        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
            }
        }
    	return b;
}

If this font file is using the Compact Font File Format, then this method will return the raw bytes needed for the font stream. If this method is ever made public: make sure to add a test if (cff == true).

 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 0 is the Apple standard character to glyph index mapping table.

 HashMap readFormat12() throws IOException 
{
        HashMap h = new HashMap();
        rf.skipBytes(2);
        int table_lenght = rf.readInt();
        rf.skipBytes(4);
        int nGroups = rf.readInt();
        for (int k = 0; k <  nGroups; k++) {
            int startCharCode = rf.readInt();
            int endCharCode = rf.readInt();
            int startGlyphID = rf.readInt();
            for (int i = startCharCode; i < = endCharCode; i++) {
                int[] r = new int[2];
                r[0] = startGlyphID;
                r[1] = getGlyphWidth(r[0]);
                h.put(new Integer(i), r);
                startGlyphID++;
            }
        }
        return h;
}

 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 4 is the Microsoft standard character to glyph index mapping table.

 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;
}

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.

 protected  void readGlyphWidths() throws IOException, DocumentException 
{
        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();
        }
}

Reads the glyphs widths. The widths are extracted from the table 'hmtx'. The glyphs are normalized to 1000 units.

  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 = rf.readShort() * 1000 / head.unitsPerEm;
                    kerning.put(pair, value);
                }
            }
        }
}

Reads the kerning information from the 'kern' table.

 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 String from the font file as bytes using the Cp1252 encoding.

 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 a Unicode String from the font file. Each character is represented by two bytes.

 public boolean setKerning(int char1,
    int 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;
}

Sets the kerning between two Unicode chars.

 public  void setPostscriptFontName(String name) 
{
        fontName = name;
}

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.

  void writeFont(PdfWriter writer,
    PdfIndirectReference ref,
    Object[] params) throws IOException, DocumentException 
{
        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) {
                pobj = new StreamFont(readCffFont(), "Type1C", compressionLevel);
                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 = null;
                        if (specialMap != null) {
                            int[] cd = GlyphList.nameToUnicode(differences[k]);
                            if (cd != null)
                                metrics = getMetricsTT(cd[0]);
                        }
                        else {
                            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, compressionLevel);
                obj = writer.addToBody(pobj);
                ind_font = obj.getIndirectReference();
            }
        }
        pobj = getFontDescriptor(ind_font, subsetPrefix, null);
        if (pobj != null){
            obj = writer.addToBody(pobj);
            ind_font = obj.getIndirectReference();
        }
        pobj = getFontBaseType(ind_font, subsetPrefix, firstChar, lastChar, shortTag);
        writer.addToBody(pobj, ref);
}

Outputs to the writer the font dictionaries and streams.