protected override TrueTypeFontTable ReadTable(string tag, uint length, TrueTypeTableEntryList list, BigEndianReader reader)
{
if (tag == TrueTypeTableNames.GlyphData)
{
throw new NotImplementedException("Not done the transformation yet");
}
else if (tag == TrueTypeTableNames.LocationIndex)
{
throw new NotImplementedException("Not done the transformation yet");
}
else
{
return(base.ReadTable(tag, length, list, reader));
}
}
protected override TrueTypeFontTable ReadTable(string tag, uint length, TrueTypeTableEntryList list, BigEndianReader reader)
{
var table = list[tag] as WoffTableEntry;
if (table.CompressedLength == table.Length)
{
//just copy the data
var pos = reader.Position;
var data = reader.Read((int)length);
table.SetDecompressedData(data);
//and return to the original
reader.Position = pos;
return(base.ReadTable(tag, length, list, reader));
}
if (table.DecompressedData == null)
{
using (var ms = new System.IO.MemoryStream())
{
DecompressTable(ms, reader, table, length);
table.SetDecompressedData(ms.ToArray());
ms.Position = 0;
using (var newReader = new BigEndianReader(ms))
{
var read = base.ReadTable(tag, length, list, newReader);
table.SetTable(read);
}
}
}
else
{
using (var ms = new System.IO.MemoryStream(table.DecompressedData))
{
using (var newReader = new BigEndianReader(ms))
{
var read = base.ReadTable(tag, length, list, newReader);
table.SetTable(read);
}
}
}
return(table.Table);
}
/// <summary>
/// Performs the actual reading and loading of the file with the BigEndian reader
/// </summary>
/// <param name="reader"></param>
/// <param name="fullpath"></param>
/// <returns></returns>
private static TTFRef DoLoadRef(BigEndianReader reader, string fullpath)
{
TrueTypeHeader head;
if (TrueTypeHeader.TryReadHeader(reader, out head) == false)
{
return(null);
}
TrueTypeTableEntryList list = new TrueTypeTableEntryList();
bool hasOs2 = false;
bool hasFHead = false;
bool hasName = false;
for (int i = 0; i < head.NumberOfTables; i++)
{
TrueTypeTableEntry dir = new TrueTypeTableEntry();
dir.Read(reader);
list.Add(dir);
if (dir.Tag == TrueTypeTableNames.WindowsMetrics)
{
hasOs2 = true;
}
else if (dir.Tag == TrueTypeTableNames.FontHeader)
{
hasFHead = true;
}
else if (dir.Tag == TrueTypeTableNames.NamingTable)
{
hasName = true;
}
}
TrueTypeTableFactory fact = (head.Version as TrueTypeVersionReader).GetTableFactory();
SubTables.NamingTable ntable = null;
if (hasName)
{
ntable = fact.ReadTable(TrueTypeTableNames.NamingTable, list, reader) as SubTables.NamingTable;
}
else
{
throw new ArgumentNullException("The required '" + TrueTypeTableNames.NamingTable + "' is not present in this font file. The OpenType file is corrupt");
}
//if (fhead == null)
// throw new ArgumentNullException("The required '" + FontHeaderTable + "' is not present in this font file. The OpenType file is corrupt");
TTFRef ttfref = new TTFRef(fullpath);
NameEntry entry;
int FamilyNameID = 1;
if (ntable.Names.TryGetEntry(FamilyNameID, out entry))
{
ttfref.FamilyName = entry.ToString();
}
if (hasOs2)
{
SubTables.OS2Table os2table = fact.ReadTable(TrueTypeTableNames.WindowsMetrics, list, reader) as SubTables.OS2Table;
ttfref.FontRestrictions = os2table.FSType;
ttfref.FontWidth = os2table.WidthClass;
ttfref.FontWeight = os2table.WeightClass;
ttfref.FontSelection = os2table.Selection;
}
else if (hasFHead)
{
SubTables.FontHeader fhead = fact.ReadTable(TrueTypeTableNames.FontHeader, list, reader) as SubTables.FontHeader;
var mac = fhead.MacStyle;
ttfref.FontRestrictions = FontRestrictions.InstallableEmbedding;
ttfref.FontWeight = WeightClass.Normal;
if ((mac & FontStyleFlags.Condensed) > 0)
{
ttfref.FontWidth = WidthClass.Condensed;
}
else if ((mac & FontStyleFlags.Extended) > 0)
{
ttfref.FontWidth = WidthClass.Expanded;
}
ttfref.FontSelection = 0;
if ((mac & FontStyleFlags.Italic) > 0)
{
ttfref.FontSelection |= FontSelection.Italic;
}
if ((mac & FontStyleFlags.Bold) > 0)
{
ttfref.FontSelection |= FontSelection.Bold;
ttfref.FontWeight = WeightClass.Bold;
}
if ((mac & FontStyleFlags.Outline) > 0)
{
ttfref.FontSelection |= FontSelection.Outlined;
}
if ((mac & FontStyleFlags.Underline) > 0)
{
ttfref.FontSelection |= FontSelection.Underscore;
}
}
else
{
throw new ArgumentNullException("The required '" + TrueTypeTableNames.WindowsMetrics + "' or '" + TrueTypeTableNames.FontHeader + " are not present in this font file. The OpenType file is corrupt");
}
return(ttfref);
}
