//
// static factory methods
//
#region public static TTFRef[] LoadRefs(System.IO.DirectoryInfo dir)
/// <summary>
/// Gets an array of all the font file references in the specified directory.
/// If any files cannot be loaded, then it will be included as a TTFRef with it's invalid flag set, and error message set appropriately.
/// </summary>
/// <param name="dir"></param>
/// <returns></returns>
public static TTFRef[] LoadRefs(System.IO.DirectoryInfo dir)
{
List <TTFRef> matched = new List <TTFRef>();
List <System.IO.FileInfo> fis = new List <System.IO.FileInfo>();
fis.AddRange(dir.GetFiles("*.ttf"));
fis.AddRange(dir.GetFiles("*.otf"));
if (fis.Count > 0)
{
for (int i = 0; i < fis.Count; i++)
{
TTFRef aref = LoadRef(fis[i]);
if (aref != null)
{
System.Diagnostics.Debug.WriteLine("Loaded Font : " + aref.GetFullName());
matched.Add(aref);
}
}
}
List <System.IO.FileInfo> cols = new List <System.IO.FileInfo>();
cols.AddRange(dir.GetFiles("*.ttc"));
if (cols.Count > 0)
{
for (int i = 0; i < cols.Count; i++)
{
TTFRef[] all = LoadCollectionRefs(cols[i]);
if (null != all)
{
foreach (var tref in all)
{
System.Diagnostics.Debug.WriteLine("Loaded Font : " + tref.GetFullName());
matched.Add(tref);
}
}
}
}
return(matched.ToArray());
}
/// <summary>
/// Loads a specific font reference using the BigEndianReader and the specified file path.
/// If the file cannot be loaded, then it will return a TTFRef with it's invalid flag set, and error message set appropriately.
/// </summary>
/// <param name="reader"></param>
/// <param name="fullpath"></param>
/// <returns></returns>
public static TTFRef LoadRef(BigEndianReader reader, string fullpath)
{
TTFRef loaded;
try
{
loaded = DoLoadRef(reader, fullpath);
}
catch (Exception ex)
{
TTFRef invalid = new TTFRef(fullpath);
invalid.IsValid = false;
invalid.ErrorMessage = ex.Message;
invalid.FamilyName = "INVALID FONT FILE";
loaded = invalid;
}
return(loaded);
}
/// <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);
}
