using System;
using System.IO;
using System.Collections;
using System.util;
/*
* $Id: Type1Font.cs,v 1.10 2007/09/14 15:46:48 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/
*/
namespace iTextSharp.text.pdf {
/** Reads a Type1 font
*
* @author Paulo Soares (psoares@consiste.pt)
*/
internal class Type1Font : BaseFont {
/** The PFB file if the input was made with a <CODE>byte</CODE> array.
*/
protected byte[] pfb;
/** The Postscript font name.
*/
private string FontName;
/** The full name of the font.
*/
private string FullName;
/** The family name of the font.
*/
private string FamilyName;
/** The weight of the font: normal, bold, etc.
*/
private string Weight = "";
/** The italic angle of the font, usually 0.0 or negative.
*/
private float ItalicAngle = 0.0f;
/** <CODE>true</CODE> if all the characters have the same
* width.
*/
private bool IsFixedPitch = false;
/** The character set of the font.
*/
private string CharacterSet;
/** The llx of the FontBox.
*/
private int llx = -50;
/** The lly of the FontBox.
*/
private int lly = -200;
/** The lurx of the FontBox.
*/
private int urx = 1000;
/** The ury of the FontBox.
*/
private int ury = 900;
/** The underline position.
*/
private int UnderlinePosition = -100;
/** The underline thickness.
*/
private int UnderlineThickness = 50;
/** The font's encoding name. This encoding is 'StandardEncoding' or
* 'AdobeStandardEncoding' for a font that can be totally encoded
* according to the characters names. For all other names the
* font is treated as symbolic.
*/
private string EncodingScheme = "FontSpecific";
/** A variable.
*/
private int CapHeight = 700;
/** A variable.
*/
private int XHeight = 480;
/** A variable.
*/
private int Ascender = 800;
/** A variable.
*/
private int Descender = -200;
/** A variable.
*/
private int StdHW;
/** A variable.
*/
private int StdVW = 80;
/** Represents the section CharMetrics in the AFM file. Each
* value of this array contains a <CODE>Object[4]</CODE> with an
* Integer, Integer, String and int[]. This is the code, width, name and char bbox.
* The key is the name of the char and also an Integer with the char number.
*/
private Hashtable CharMetrics = new Hashtable();
/** Represents the section KernPairs in the AFM file. The key is
* the name of the first character and the value is a <CODE>Object[]</CODE>
* with 2 elements for each kern pair. Position 0 is the name of
* the second character and position 1 is the kerning distance. This is
* repeated for all the pairs.
*/
private Hashtable KernPairs = new Hashtable();
/** The file in use.
*/
private string fileName;
/** <CODE>true</CODE> if this font is one of the 14 built in fonts.
*/
private bool builtinFont = false;
/** Types of records in a PFB file. ASCII is 1 and BINARY is 2.
* They have to appear in the PFB file in this sequence.
*/
private static readonly int[] PFB_TYPES = {1, 2, 1};
/** Creates a new Type1 font.
* @param ttfAfm the AFM file if the input is made with a <CODE>byte</CODE> array
* @param pfb the PFB file if the input is made with a <CODE>byte</CODE> array
* @param afmFile the name of one of the 14 built-in fonts or the location of an AFM file. The file must end in '.afm'
* @param enc the encoding to be applied to this font
* @param emb true if the font is to be embedded in the PDF
* @throws DocumentException the AFM file is invalid
* @throws IOException the AFM file could not be read
*/
internal Type1Font(string afmFile, string enc, bool emb, byte[] ttfAfm, byte[] pfb) {
if (emb && ttfAfm != null && pfb == null)
throw new DocumentException("Two byte arrays are needed if the Type1 font is embedded.");
if (emb && ttfAfm != null)
this.pfb = pfb;
encoding = enc;
embedded = emb;
fileName = afmFile;
FontType = FONT_TYPE_T1;
RandomAccessFileOrArray rf = null;
Stream istr = null;
if (BuiltinFonts14.ContainsKey(afmFile)) {
embedded = false;
builtinFont = true;
byte[] buf = new byte[1024];
try {
istr = GetResourceStream(RESOURCE_PATH + afmFile + ".afm");
if (istr == null) {
Console.Error.WriteLine(afmFile + " not found as resource.");
throw new DocumentException(afmFile + " not found as resource.");
}
MemoryStream ostr = new MemoryStream();
while (true) {
int size = istr.Read(buf, 0, buf.Length);
if (size == 0)
break;
ostr.Write(buf, 0, size);
}
buf = ostr.ToArray();
}
finally {
if (istr != null) {
try {
istr.Close();
}
catch {
// empty on purpose
}
}
}
try {
rf = new RandomAccessFileOrArray(buf);
Process(rf);
}
finally {
if (rf != null) {
try {
rf.Close();
}
catch {
// empty on purpose
}
}
}
}
else if (afmFile.ToLower(System.Globalization.CultureInfo.InvariantCulture).EndsWith(".afm")) {
try {
if (ttfAfm == null)
rf = new RandomAccessFileOrArray(afmFile);
else
rf = new RandomAccessFileOrArray(ttfAfm);
Process(rf);
}
finally {
if (rf != null) {
try {
rf.Close();
}
catch {
// empty on purpose
}
}
}
}
else if (afmFile.ToLower(System.Globalization.CultureInfo.InvariantCulture).EndsWith(".pfm")) {
try {
MemoryStream ba = new MemoryStream();
if (ttfAfm == null)
rf = new RandomAccessFileOrArray(afmFile);
else
rf = new RandomAccessFileOrArray(ttfAfm);
Pfm2afm.Convert(rf, ba);
rf.Close();
rf = new RandomAccessFileOrArray(ba.ToArray());
Process(rf);
}
finally {
if (rf != null) {
try {
rf.Close();
}
catch {
// empty on purpose
}
}
}
}
else
throw new DocumentException(afmFile + " is not an AFM or PFM font file.");
EncodingScheme = EncodingScheme.Trim();
if (EncodingScheme.Equals("AdobeStandardEncoding") || EncodingScheme.Equals("StandardEncoding")) {
fontSpecific = false;
}
if (!encoding.StartsWith("#"))
PdfEncodings.ConvertToBytes(" ", enc); // check if the encoding exists
CreateEncoding();
}
/** Gets the width from the font according to the <CODE>name</CODE> or,
* if the <CODE>name</CODE> is null, meaning it is a symbolic font,
* the char <CODE>c</CODE>.
* @param c the char if the font is symbolic
* @param name the glyph name
* @return the width of the char
*/
internal override int GetRawWidth(int c, string name) {
Object[] metrics;
if (name == null) { // font specific
metrics = (Object[])CharMetrics[c];
}
else {
if (name.Equals(".notdef"))
return 0;
metrics = (Object[])CharMetrics[name];
}
if (metrics != null)
return (int)metrics[1];
return 0;
}
/** Gets the kerning between two Unicode characters. The characters
* are converted to names and this names are used to find the kerning
* pairs in the <CODE>Hashtable</CODE> <CODE>KernPairs</CODE>.
* @param char1 the first char
* @param char2 the second char
* @return the kerning to be applied
*/
public override int GetKerning(char char1, char char2) {
string first = GlyphList.UnicodeToName((int)char1);
if (first == null)
return 0;
string second = GlyphList.UnicodeToName((int)char2);
if (second == null)
return 0;
Object[] obj = (Object[])KernPairs[first];
if (obj == null)
return 0;
for (int k = 0; k < obj.Length; k += 2) {
if (second.Equals(obj[k]))
return (int)obj[k + 1];
}
return 0;
}
/** Reads the font metrics
* @param rf the AFM file
* @throws DocumentException the AFM file is invalid
* @throws IOException the AFM file could not be read
*/
public void Process(RandomAccessFileOrArray rf) {
string line;
bool isMetrics = false;
while ((line = rf.ReadLine()) != null) {
StringTokenizer tok = new StringTokenizer(line, " ,\n\r\t\f");
if (!tok.HasMoreTokens())
continue;
string ident = tok.NextToken();
if (ident.Equals("FontName"))
FontName = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("FullName"))
FullName = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("FamilyName"))
FamilyName = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("Weight"))
Weight = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("ItalicAngle"))
ItalicAngle = float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("IsFixedPitch"))
IsFixedPitch = tok.NextToken().Equals("true");
else if (ident.Equals("CharacterSet"))
CharacterSet = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("FontBBox")) {
llx = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
lly = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
urx = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
ury = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
}
else if (ident.Equals("UnderlinePosition"))
UnderlinePosition = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("UnderlineThickness"))
UnderlineThickness = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("EncodingScheme"))
EncodingScheme = tok.NextToken("\u00ff").Substring(1);
else if (ident.Equals("CapHeight"))
CapHeight = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("XHeight"))
XHeight = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("Ascender"))
Ascender = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("Descender"))
Descender = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("StdHW"))
StdHW = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("StdVW"))
StdVW = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("StartCharMetrics")) {
isMetrics = true;
break;
}
}
if (!isMetrics)
throw new DocumentException("Missing StartCharMetrics in " + fileName);
while ((line = rf.ReadLine()) != null) {
StringTokenizer tok = new StringTokenizer(line);
if (!tok.HasMoreTokens())
continue;
string ident = tok.NextToken();
if (ident.Equals("EndCharMetrics")) {
isMetrics = false;
break;
}
int C = -1;
int WX = 250;
string N = "";
int[] B = null;
tok = new StringTokenizer(line, ";");
while (tok.HasMoreTokens())
{
StringTokenizer tokc = new StringTokenizer(tok.NextToken());
if (!tokc.HasMoreTokens())
continue;
ident = tokc.NextToken();
if (ident.Equals("C"))
C = int.Parse(tokc.NextToken());
else if (ident.Equals("WX"))
WX = (int)float.Parse(tokc.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
else if (ident.Equals("N"))
N = tokc.NextToken();
else if (ident.Equals("B")) {
B = new int[]{int.Parse(tokc.NextToken()),
int.Parse(tokc.NextToken()),
int.Parse(tokc.NextToken()),
int.Parse(tokc.NextToken())};
}
}
Object[] metrics = new Object[]{C, WX, N, B};
if (C >= 0)
CharMetrics[C] = metrics;
CharMetrics[N] = metrics;
}
if (isMetrics)
throw new DocumentException("Missing EndCharMetrics in " + fileName);
if (!CharMetrics.ContainsKey("nonbreakingspace")) {
Object[] space = (Object[])CharMetrics["space"];
if (space != null)
CharMetrics["nonbreakingspace"] = space;
}
while ((line = rf.ReadLine()) != null) {
StringTokenizer tok = new StringTokenizer(line);
if (!tok.HasMoreTokens())
continue;
string ident = tok.NextToken();
if (ident.Equals("EndFontMetrics"))
return;
if (ident.Equals("StartKernPairs")) {
isMetrics = true;
break;
}
}
if (!isMetrics)
throw new DocumentException("Missing EndFontMetrics in " + fileName);
while ((line = rf.ReadLine()) != null) {
StringTokenizer tok = new StringTokenizer(line);
if (!tok.HasMoreTokens())
continue;
string ident = tok.NextToken();
if (ident.Equals("KPX")) {
string first = tok.NextToken();
string second = tok.NextToken();
int width = (int)float.Parse(tok.NextToken(), System.Globalization.NumberFormatInfo.InvariantInfo);
Object[] relates = (Object[])KernPairs[first];
if (relates == null)
KernPairs[first] = new Object[]{second, width};
else {
int n = relates.Length;
Object[] relates2 = new Object[n + 2];
Array.Copy(relates, 0, relates2, 0, n);
relates2[n] = second;
relates2[n + 1] = width;
KernPairs[first] = relates2;
}
}
else if (ident.Equals("EndKernPairs")) {
isMetrics = false;
break;
}
}
if (isMetrics)
throw new DocumentException("Missing EndKernPairs in " + fileName);
rf.Close();
}
/** If the embedded flag is <CODE>false</CODE> or if the font is
* one of the 14 built in types, it returns <CODE>null</CODE>,
* otherwise the font is read and output in a PdfStream object.
* @return the PdfStream containing the font or <CODE>null</CODE>
* @throws DocumentException if there is an error reading the font
*/
private PdfStream GetFontStream() {
if (builtinFont || !embedded)
return null;
RandomAccessFileOrArray rf = null;
try {
string filePfb = fileName.Substring(0, fileName.Length - 3) + "pfb";
if (pfb == null)
rf = new RandomAccessFileOrArray(filePfb);
else
rf = new RandomAccessFileOrArray(pfb);
int fileLength = rf.Length;
byte[] st = new byte[fileLength - 18];
int[] lengths = new int[3];
int bytePtr = 0;
for (int k = 0; k < 3; ++k) {
if (rf.Read() != 0x80)
throw new DocumentException("Start marker missing in " + filePfb);
if (rf.Read() != PFB_TYPES[k])
throw new DocumentException("Incorrect segment type in " + filePfb);
int size = rf.Read();
size += rf.Read() << 8;
size += rf.Read() << 16;
size += rf.Read() << 24;
lengths[k] = size;
while (size != 0) {
int got = rf.Read(st, bytePtr, size);
if (got < 0)
throw new DocumentException("Premature end in " + filePfb);
bytePtr += got;
size -= got;
}
}
return new StreamFont(st, lengths);
}
finally {
if (rf != null) {
try {
rf.Close();
}
catch {
// empty on purpose
}
}
}
}
/** Generates the font descriptor for this font or <CODE>null</CODE> if it is
* one of the 14 built in fonts.
* @param fontStream the indirect reference to a PdfStream containing the font or <CODE>null</CODE>
* @return the PdfDictionary containing the font descriptor or <CODE>null</CODE>
*/
public PdfDictionary GetFontDescriptor(PdfIndirectReference fontStream) {
if (builtinFont)
return null;
PdfDictionary dic = new PdfDictionary(PdfName.FONTDESCRIPTOR);
dic.Put(PdfName.ASCENT, new PdfNumber(Ascender));
dic.Put(PdfName.CAPHEIGHT, new PdfNumber(CapHeight));
dic.Put(PdfName.DESCENT, new PdfNumber(Descender));
dic.Put(PdfName.FONTBBOX, new PdfRectangle(llx, lly, urx, ury));
dic.Put(PdfName.FONTNAME, new PdfName(FontName));
dic.Put(PdfName.ITALICANGLE, new PdfNumber(ItalicAngle));
dic.Put(PdfName.STEMV, new PdfNumber(StdVW));
if (fontStream != null)
dic.Put(PdfName.FONTFILE, fontStream);
int flags = 0;
if (IsFixedPitch)
flags |= 1;
flags |= fontSpecific ? 4 : 32;
if (ItalicAngle < 0)
flags |= 64;
if (FontName.IndexOf("Caps") >= 0 || FontName.EndsWith("SC"))
flags |= 131072;
if (Weight.Equals("Bold"))
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 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>
*/
private PdfDictionary GetFontBaseType(PdfIndirectReference fontDescriptor, int firstChar, int lastChar, byte[] shortTag) {
PdfDictionary dic = new PdfDictionary(PdfName.FONT);
dic.Put(PdfName.SUBTYPE, PdfName.TYPE1);
dic.Put(PdfName.BASEFONT, new PdfName(FontName));
bool stdEncoding = encoding.Equals(CP1252) || encoding.Equals(MACROMAN);
if (!fontSpecific || specialMap != null) {
for (int k = firstChar; k <= lastChar; ++k) {
if (!differences[k].Equals(notdef)) {
firstChar = k;
break;
}
}
if (stdEncoding)
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();
bool 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);
}
}
if (specialMap != null || forceWidthsOutput || !(builtinFont && (fontSpecific || stdEncoding))) {
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 (!builtinFont && fontDescriptor != null)
dic.Put(PdfName.FONTDESCRIPTOR, fontDescriptor);
return dic;
}
/** Outputs to the writer the font dictionaries and streams.
* @param writer the writer for this document
* @param ref the font indirect reference
* @param parms several parameters that depend on the font type
* @throws IOException on error
* @throws DocumentException error in generating the object
*/
internal override void WriteFont(PdfWriter writer, PdfIndirectReference piref, Object[] parms) {
int firstChar = (int)parms[0];
int lastChar = (int)parms[1];
byte[] shortTag = (byte[])parms[2];
bool subsetp = (bool)parms[3] && 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;
pobj = GetFontStream();
if (pobj != null){
obj = writer.AddToBody(pobj);
ind_font = obj.IndirectReference;
}
pobj = GetFontDescriptor(ind_font);
if (pobj != null){
obj = writer.AddToBody(pobj);
ind_font = obj.IndirectReference;
}
pobj = GetFontBaseType(ind_font, firstChar, lastChar, shortTag);
writer.AddToBody(pobj, piref);
}
/** 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>,
* <CODE>ITALICANGLE</CODE>, <CODE>BBOXLLX</CODE>, <CODE>BBOXLLY</CODE>, <CODE>BBOXURX</CODE>
* and <CODE>BBOXURY</CODE>.
* @param key the parameter to be extracted
* @param fontSize the font size in points
* @return the parameter in points
*/
public override float GetFontDescriptor(int key, float fontSize) {
switch (key) {
case AWT_ASCENT:
case ASCENT:
return Ascender * fontSize / 1000;
case CAPHEIGHT:
return CapHeight * fontSize / 1000;
case AWT_DESCENT:
case DESCENT:
return Descender * fontSize / 1000;
case ITALICANGLE:
return ItalicAngle;
case BBOXLLX:
return llx * fontSize / 1000;
case BBOXLLY:
return lly * fontSize / 1000;
case BBOXURX:
return urx * fontSize / 1000;
case BBOXURY:
return ury * fontSize / 1000;
case AWT_LEADING:
return 0;
case AWT_MAXADVANCE:
return (urx - llx) * fontSize / 1000;
case UNDERLINE_POSITION:
return UnderlinePosition * fontSize / 1000;
case UNDERLINE_THICKNESS:
return UnderlineThickness * fontSize / 1000;
}
return 0;
}
/** Gets the postscript font name.
* @return the postscript font name
*/
public override string PostscriptFontName {
get {
return FontName;
}
set {
FontName = value;
}
}
/** 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 override string[][] FullFontName {
get {
return new string[][]{new string[] {"", "", "", 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 override string[][] FamilyFontName {
get {
return new string[][]{new string[] {"", "", "", FamilyName}};
}
}
/** Checks if the font has any kerning pairs.
* @return <CODE>true</CODE> if the font has any kerning pairs
*/
public override bool HasKernPairs() {
return KernPairs.Count > 0;
}
/**
* 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 override bool SetKerning(char char1, char char2, int kern) {
String first = GlyphList.UnicodeToName((int)char1);
if (first == null)
return false;
String second = GlyphList.UnicodeToName((int)char2);
if (second == null)
return false;
Object[] obj = (Object[])KernPairs[first];
if (obj == null) {
obj = new Object[]{second, kern};
KernPairs[first] = obj;
return true;
}
for (int k = 0; k < obj.Length; k += 2) {
if (second.Equals(obj[k])) {
obj[k + 1] = kern;
return true;
}
}
int size = obj.Length;
Object[] obj2 = new Object[size + 2];
Array.Copy(obj, 0, obj2, 0, size);
obj2[size] = second;
obj2[size + 1] = kern;
KernPairs[first] = obj2;
return true;
}
protected override int[] GetRawCharBBox(int c, String name) {
Object[] metrics;
if (name == null) { // font specific
metrics = (Object[])CharMetrics[c];
}
else {
if (name.Equals(".notdef"))
return null;
metrics = (Object[])CharMetrics[name];
}
if (metrics != null)
return ((int[])(metrics[3]));
return null;
}
}
}
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