private void initFontEncoding(Type1Parser parser)
{
List <KeyValuePair <ushort, string> > charset = parser.GetCharset();
if (charset != null)
{
for (int i = 0; i < charset.Count; ++i)
{
char c = GlyfNames.GetChar(charset[i].Value);
if (!_charset.ContainsKey(c))
{
_charset.Add(c, (byte)charset[i].Key);
}
}
}
else
{
for (byte i = 32; i < 255; ++i)
{
char ch = Encoding.GetChar(i);
if (!_charset.ContainsKey(ch))
{
_charset.Add(ch, i);
}
}
}
}
private void initialize(Type1Parser parser)
{
PDFDictionary dict = GetDictionary();
dict.AddItem("Type", new PDFName("Font"));
dict.AddItem("Subtype", new PDFName("Type1"));
dict.AddItem("BaseFont", new PDFName(parser.FontName));
addEncoding(parser);
addWidths(parser);
addFontDescriptor(parser);
}
private static FontBase loadFromBuffer(byte[] buf, uint ttcSize)
{
if (TrueTypeFontFile.IsTrueTypeFont(buf) || TrueTypeFontFile.IsOpenTypeFont(buf))
{
FontBase font = new TrueTypeFont(buf, false, false, ttcSize);
return(font);
}
if (Type1Parser.IsType1Font(buf))
{
FontBase font = new Type1Font(buf);
return(font);
}
throw new PDFUnsupportFontFormatException();
}
private void addWidths(Type1Parser parser)
{
List <KeyValuePair <ushort, string> > charset = parser.GetCharset();
Dictionary <string, int> widths = parser.GetWidths();
PDFArray w = new PDFArray();
if (charset != null)
{
int i = 0;
if (charset[0].Key == 0)
{
++i;
}
int tmp = 0;
for (; i < charset.Count; ++i)
{
if (!widths.TryGetValue(charset[i].Value, out tmp))
{
w.AddItem(new PDFNumber(0));
}
else
{
w.AddItem(new PDFNumber(tmp));
}
}
}
else
{
int result = 0;
for (byte i = 32; i < 255; ++i)
{
char c = Encoding.GetChar(i);
string glyfName = GlyfNames.GetName(c);
if (!widths.TryGetValue(glyfName, out result))
{
w.AddItem(new PDFNumber(0));
}
else
{
w.AddItem(new PDFNumber(result));
}
}
}
GetDictionary().AddItem("Widths", w);
}
internal Type1Font(byte[] buffer)
{
Type1Parser parser = new Type1Parser(new Reader(buffer));
initialize(parser);
initFontEncoding(parser);
PDFDictionaryStream fontFile = new PDFDictionaryStream();
fontFile.Dictionary.AddItem("Length1", new PDFNumber(buffer.Length));
fontFile.Dictionary.AddItem("Length2", new PDFNumber(0));
fontFile.Dictionary.AddItem("Length3", new PDFNumber(0));
Stream stream = fontFile.GetStream();
stream.Position = 0;
stream.Write(buffer, 0, buffer.Length);
((PDFDictionary)GetDictionary()["FontDescriptor"]).AddItem("FontFile", fontFile);
GetDictionary().Tag = this;
}
private void addEncoding(Type1Parser parser)
{
List <KeyValuePair <ushort, string> > charset = parser.GetCharset();
if (charset == null)
{
GetDictionary().AddItem("Encoding", new PDFName(parser.Encoding));
}
else
{
PDFDictionary encoding = new PDFDictionary();
encoding.AddItem("Type", new PDFName("Encoding"));
PDFArray differences = new PDFArray();
for (int i = 0; i < charset.Count; ++i)
{
differences.AddItem(new PDFNumber(charset[i].Key));
differences.AddItem(new PDFName(charset[i].Value));
}
encoding.AddItem("Differences", differences);
GetDictionary().AddItem("Encoding", encoding);
}
if (charset == null)
{
GetDictionary().AddItem("FirstChar", new PDFNumber(32));
GetDictionary().AddItem("LastChar", new PDFNumber(255));
}
else
{
int firstChar = charset[0].Key;
if (firstChar == 0)
{
firstChar = charset[1].Key;
}
GetDictionary().AddItem("FirstChar", new PDFNumber(firstChar));
GetDictionary().AddItem("LastChar", new PDFNumber(charset[charset.Count - 1].Key));
}
}
private void addFontDescriptor(Type1Parser parser)
{
PDFDictionary dict = new PDFDictionary();
dict.AddItem("Ascent", new PDFNumber(parser.FontBBox.Height));
dict.AddItem("Descent", new PDFNumber(parser.FontBBox.Y));
dict.AddItem("CapHeight", new PDFNumber(0));
dict.AddItem("Flags", new PDFNumber(32));
dict.AddItem("FontName", new PDFName(parser.FontName));
dict.AddItem("ItalicAngle", new PDFNumber(parser.ItalicAngle));
dict.AddItem("StemV", new PDFNumber(0));
dict.AddItem("Type", new PDFName("FontDescriptor"));
PDFArray bbox = new PDFArray();
System.Drawing.Rectangle rect = parser.FontBBox;
bbox.AddItem(new PDFNumber(rect.X));
bbox.AddItem(new PDFNumber(rect.Y));
bbox.AddItem(new PDFNumber(rect.Width));
bbox.AddItem(new PDFNumber(rect.Height));
dict.AddItem("FontBBox", bbox);
GetDictionary().AddItem("FontDescriptor", dict);
}
