/// <summary>
/// Loads the specified reader.
/// </summary>
/// <param name="reader">The reader.</param>
/// <param name="index">The index.</param>
/// <returns></returns>
public static OpenTypeFont Load(OpenTypeFontReader reader, int index)
{
if (reader == null)
{
throw new PdfArgumentNullException("reader");
}
long position = reader.Position;
if (reader.ReadLONG() == 0x74746366)
{
reader.ReadFixed();
long num3 = reader.ReadULONG();
if ((index < 0) || (index >= num3))
{
throw new PdfReadFontException("index must be bigger than 0 and less than " + ((long)num3) + ".");
}
reader.Skip((long)(4 * index));
long pos = reader.ReadULONG();
reader.Seek(pos);
}
else
{
reader.Seek(position);
}
return(new OpenTypeFont(reader));
}
/// <summary>
/// Gets the sub font.
/// </summary>
/// <param name="chars">The chars.</param>
/// <param name="isCFF">if set to <c>true</c> [is CFF].</param>
/// <returns></returns>
public override byte[] GetSubFont(Dictionary <char, int> chars, out bool isCFF)
{
if (this.IsCFF)
{
isCFF = true;
OpenTypeFontReader reader = this.tables["CFF "].Reader;
reader.Seek(0L);
return(reader.ReadBytes((int)reader.Length));
}
isCFF = false;
if (!base.isSubSet)
{
return(this.reader.ToArray());
}
List <string> list = new List <string> {
"head", "glyf", "loca"
};
if (base.encoding == "WinAnsiEncoding")
{
list.Add("cmap");
}
list.Add("hhea");
list.Add("maxp");
list.Add("hmtx");
list.Add("cvt ");
list.Add("fpgm");
list.Add("prep");
if (!base.isSubSet)
{
list.Add("OS/2");
if (!list.Contains("cmap"))
{
list.Add("cmap");
}
list.Add("name");
}
OpenTypeFontWriter writer = new OpenTypeFontWriter();
int i = 0;
int num2 = 0;
int num3 = 1;
foreach (string str in list)
{
if (this.tables.ContainsKey(str))
{
i++;
}
}
for (int j = 0; j < 0x20; j++)
{
if (num3 > i)
{
break;
}
num3 = num3 << 1;
num2++;
}
num2--;
int num5 = (num3 / 2) * 0x10;
int num6 = (i * 0x10) - num5;
writer.WriteFixed(1f);
writer.WriteSHORT(i);
writer.WriteSHORT(num5);
writer.WriteSHORT(num2);
writer.WriteSHORT(num6);
long position = writer.Position;
writer.WriteBytes((int)(i * 0x10));
List <OpenTypeFontTable> list2 = new List <OpenTypeFontTable>();
foreach (string str2 in list)
{
if (this.tables.ContainsKey(str2))
{
OpenTypeFontTable subset = this.tables[str2].GetSubset(chars);
long num8 = writer.Position;
writer.Write(subset.Reader);
list2.Add(subset);
subset.Offset = num8;
}
}
writer.Seek(position);
foreach (OpenTypeFontTable table2 in list2)
{
writer.WriteString(table2.Tag);
writer.WriteLONG(table2.CheckSum);
writer.WriteLONG(table2.Offset);
writer.WriteLONG(table2.Length);
}
return(writer.ToArray());
}