// generate a new table from the cached data
public override OTTable GenerateTable()
{
// generate the subtables
ArrayList arrSubtableBuffers = new ArrayList();
for (int i=0; i<m_arrSubtables.Count; i++)
{
byte [] buf = null;
CachedSubtable st = (CachedSubtable)m_arrSubtables[i];
if (st.m_platID == 3 && st.m_encID == 10)
{
buf = GenerateFormat12Subtable(st.m_CharToGlyphMap);
}
else if (st.m_platID == 1 && st.m_encID == 0)
{
buf = GenerateFormat0Subtable(st.m_CharToGlyphMap, 0);
}
else
{
buf = GenerateFormat4Subtable(st.m_CharToGlyphMap);
}
arrSubtableBuffers.Add(buf);
}
// calculate the number of bytes required for the cmap table
uint nBytes = 4; // version and number of subtables
// encoding table entries
nBytes += 8 * (uint)m_arrSubtables.Count;
for (int i=0; i<m_arrSubtables.Count; i++)
{
byte[] buf = (byte[])arrSubtableBuffers[i];
nBytes += (uint)buf.Length;
}
// create a buffer for the new cmap table
MBOBuffer newbuf = new MBOBuffer(nBytes);
// populate the buffer
// version and number of encoding tables
newbuf.SetUshort(0, (uint)
Table_cmap.FieldOffsets.TableVersionNumber);
newbuf.SetUshort((ushort)m_arrSubtables.Count, (uint)
Table_cmap.FieldOffsets.NumberOfEncodingTables
);
// encoding table entries
uint SubtableOffset = (uint)(4 + 8*m_arrSubtables.Count);
for (int i=0; i < m_arrSubtables.Count; i++)
{
CachedSubtable st = (CachedSubtable)m_arrSubtables[i];
uint eteOffset =
(uint)Table_cmap.FieldOffsets.EncodingTableEntries +
(uint)i*8;
newbuf.SetUshort(st.m_platID, eteOffset);
newbuf.SetUshort(st.m_encID, eteOffset+2);
newbuf.SetUint(SubtableOffset, eteOffset+4);
byte[] buf = (byte[])arrSubtableBuffers[i];
SubtableOffset += (uint)buf.Length;
}
// subtables
byte[] TableBuf = newbuf.GetBuffer();
SubtableOffset = (uint)(4 + 8*m_arrSubtables.Count);
for (int i=0; i<m_arrSubtables.Count; i++)
{
byte[] SubtableBuf = (byte[])arrSubtableBuffers[i];
System.Buffer.BlockCopy(SubtableBuf, 0, TableBuf,
(int)SubtableOffset,
SubtableBuf.Length);
SubtableOffset += (uint)SubtableBuf.Length;
}
// put the buffer into a Table_cmap object and return it
Table_cmap cmapTable = new Table_cmap("cmap", newbuf);
return cmapTable;
}
public virtual OTTable CreateTableObject(OTTag tag, MBOBuffer buf)
{
OTTable table = null;
string sName = GetUnaliasedTableName(tag);
switch (sName)
{
case "BASE": table = new Table_BASE(tag, buf); break;
case "CFF ": table = new Table_CFF(tag, buf); break;
case "cmap": table = new Table_cmap(tag, buf); break;
case "cvt ": table = new Table_cvt(tag, buf); break;
case "DSIG": table = new Table_DSIG(tag, buf); break;
case "EBDT": table = new Table_EBDT(tag, buf); break;
case "EBLC": table = new Table_EBLC(tag, buf); break;
case "EBSC": table = new Table_EBSC(tag, buf); break;
case "fpgm": table = new Table_fpgm(tag, buf); break;
case "gasp": table = new Table_gasp(tag, buf); break;
case "GDEF": table = new Table_GDEF(tag, buf); break;
case "glyf": table = new Table_glyf(tag, buf); break;
case "GPOS": table = new Table_GPOS(tag, buf); break;
case "GSUB": table = new Table_GSUB(tag, buf); break;
case "hdmx": table = new Table_hdmx(tag, buf); break;
case "head": table = new Table_head(tag, buf); break;
case "hhea": table = new Table_hhea(tag, buf); break;
case "hmtx": table = new Table_hmtx(tag, buf); break;
case "JSTF": table = new Table_JSTF(tag, buf); break;
case "kern": table = new Table_kern(tag, buf); break;
case "loca": table = new Table_loca(tag, buf); break;
case "LTSH": table = new Table_LTSH(tag, buf); break;
case "maxp": table = new Table_maxp(tag, buf); break;
case "name": table = new Table_name(tag, buf); break;
case "OS/2": table = new Table_OS2(tag, buf); break;
case "PCLT": table = new Table_PCLT(tag, buf); break;
case "post": table = new Table_post(tag, buf); break;
case "prep": table = new Table_prep(tag, buf); break;
case "VDMX": table = new Table_VDMX(tag, buf); break;
case "vhea": table = new Table_vhea(tag, buf); break;
case "vmtx": table = new Table_vmtx(tag, buf); break;
case "VORG": table = new Table_VORG(tag, buf); break;
//case "Zapf": table = new Table_Zapf(tag, buf); break;
default: table = new Table__Unknown(tag, buf); break;
}
return table;
}
// constructor
public cmap_cache(Table_cmap OwnerTable)
{
m_arrSubtables = new SubtableArray();
for ( uint iSubtable=0;
iSubtable < OwnerTable.NumberOfEncodingTables;
iSubtable++ ) {
EncodingTableEntry ete =
OwnerTable.GetEncodingTableEntry(iSubtable);
Subtable st = OwnerTable.GetSubtable(ete);
CachedSubtable cst = new
CachedSubtable(ete.platformID, ete.encodingID);
cst.m_CharToGlyphMap = st.GetMap();
m_arrSubtables.Add(cst);
if (cst.m_platID == 3 && cst.m_encID == 10)
{
m_DefaultSubtable = cst;
}
if ( cst.m_platID == 3 && cst.m_encID == 1 &&
m_DefaultSubtable == null)
{
m_DefaultSubtable = cst;
}
}
}
