protected void ReadLoca()
{
TableData tdata = tables["head"];
if (tdata == null)
{
throw new Exception("Table head not found");
}
int nindex = tdata.Location + HEAD_LOCA_FORMAT_OFFSET;
//rf.Seek(nindex,SeekOrigin.Begin);
locaShortTable = (ByteArrayToUShort(rfarray, nindex, 4) == 0);
nindex = nindex + 4;
// Cached
Monitor.Enter(tflag);
try
{
if (CachedlocaTables == null)
{
CachedlocaTables = new SortedList <string, int[]>();
}
if (CachedlocaTables.IndexOfKey(PostcriptName) >= 0)
{
locaTable = CachedlocaTables[PostcriptName];
}
else
{
tdata = tables["loca"];
if (tdata == null)
{
throw new Exception("Table loca not found");
}
nindex = tdata.Location;
if (locaShortTable)
{
int entries = tdata.Length / 2;
locaTable = new int[entries];
for (int k = 0; k < entries; ++k)
{
locaTable[k] = ByteArrayToUShort(rfarray, nindex, 2) * 2;
nindex = nindex + 2;
}
}
else
{
int entries = tdata.Length / 4;
locaTable = new int[entries];
for (int k = 0; k < entries; ++k)
{
locaTable[k] = ByteArrayToInt(rfarray, nindex, 4);
nindex = nindex + 4;
}
}
CachedlocaTables.Add(PostcriptName, locaTable);
}
}
finally
{
Monitor.Exit(tflag);
}
}
protected void AssembleFont()
{
int fullFontSize = 0;
int tablesUsed = 2;
int len = 0;
for (int k = 0; k < tablenameconst.Length; ++k)
{
string name = tablenameconst[k];
if (name.Equals("glyf") || name.Equals("loca"))
{
continue;
}
TableData tdata = tables[name];
if (tdata == null)
{
continue;
}
++tablesUsed;
fullFontSize += (tdata.Length + 3) & (~3);
}
fullFontSize += newLocaTableOut.Length;
fullFontSize += newGlyfTable.Length;
int iref = 16 * tablesUsed + 12;
fullFontSize += iref;
outFont = new byte[fullFontSize];
fontPtr = 0;
WriteFontInt(0x00010000);
WriteFontShort(tablesUsed);
int selector = entryselec[tablesUsed];
WriteFontShort((1 << selector) * 16);
WriteFontShort(selector);
WriteFontShort((tablesUsed - (1 << selector)) * 16);
for (int k = 0; k < tablenameconst.Length; ++k)
{
string name = tablenameconst[k];
TableData tdata = tables[name];
if (tdata == null)
{
continue;
}
WriteFontString(name);
if (name.Equals("glyf"))
{
WriteFontInt(CalculateChecksum(newGlyfTable));
len = glyfTableRealSize;
}
else if (name.Equals("loca"))
{
WriteFontInt(CalculateChecksum(newLocaTableOut));
len = locaTableRealSize;
}
else
{
WriteFontInt(tdata.Checksum);
len = tdata.Length;
}
WriteFontInt(iref);
WriteFontInt(len);
iref += (len + 3) & (~3);
}
for (int k = 0; k < tablenameconst.Length; ++k)
{
string name = tablenameconst[k];
TableData tdata = tables[name];
if (tdata == null)
{
continue;
}
if (name.Equals("glyf"))
{
Array.Copy(newGlyfTable, 0, outFont, fontPtr, newGlyfTable.Length);
fontPtr += newGlyfTable.Length;
newGlyfTable = null;
}
else if (name.Equals("loca"))
{
Array.Copy(newLocaTableOut, 0, outFont, fontPtr, newLocaTableOut.Length);
fontPtr += newLocaTableOut.Length;
newLocaTableOut = null;
}
else
{
int nindex = tdata.Location;
Array.Copy(rfarray, nindex, outFont, fontPtr, tdata.Length);
fontPtr += (tdata.Length + 3) & (~3);
}
}
}