void ReadSubTableFormat0(BinaryReader reader, int remainingBytes)
{
ushort npairs = reader.ReadUInt16();
ushort searchRange = reader.ReadUInt16();
ushort entrySelector = reader.ReadUInt16();
ushort rangeShift = reader.ReadUInt16();
//----------------------------------------------
//check
#if DEBUG
if ((remainingBytes % 6) != 0)
{
throw new System.Exception();
}
int calNpairs = remainingBytes / 6;
#endif
var ksubTable = new KerningSubTable(npairs);
this.kernSubTables.Add(ksubTable);
while (remainingBytes > 0)
{
ushort left = reader.ReadUInt16();
ushort right = reader.ReadUInt16();
short value = reader.ReadInt16();
ksubTable.AddKernPair(
reader.ReadUInt16(), //left
reader.ReadUInt16(), //right
reader.ReadInt16()); //value
remainingBytes -= 6;
}
}
public static KerningTable Load(TrueTypeDataBytes data, TrueTypeHeaderTable headerTable)
{
data.Seek(headerTable.Offset);
var version = data.ReadUnsignedShort();
var numberOfSubtables = data.ReadUnsignedShort();
var subTables = new KerningSubTable[numberOfSubtables];
for (var i = 0; i < numberOfSubtables; i++)
{
var currentOffset = data.Position;
var subtableVersion = data.ReadUnsignedShort();
var subtableLength = data.ReadUnsignedShort();
var coverage = data.ReadUnsignedShort();
var kernCoverage = (KernCoverage)coverage;
var format = ((coverage & 255) >> 8);
switch (format)
{
case 0:
subTables[i] = ReadFormat0Table(subtableVersion, data, kernCoverage);
break;
case 2:
subTables[i] = ReadFormat2Table(subtableVersion, data, kernCoverage, currentOffset);
break;
}
}
return(new KerningTable(subTables));
}
void ReadSubTableFormat0(BinaryReader reader, int remainingBytes)
{
ushort npairs = reader.ReadUInt16();
ushort searchRange = reader.ReadUInt16();
ushort entrySelector = reader.ReadUInt16();
ushort rangeShift = reader.ReadUInt16();
//----------------------------------------------
//check
#if DEBUG
if ((remainingBytes % 6) != 0)
{
throw new System.Exception();
}
int calNpairs = remainingBytes / 6;
#endif
var ksubTable = new KerningSubTable(npairs);
this.kernSubTables.Add(ksubTable);
while (remainingBytes > 0)
{
ushort left = reader.ReadUInt16();
ushort right = reader.ReadUInt16();
short value = reader.ReadInt16();
ksubTable.AddKernPair(
reader.ReadUInt16(), //left
reader.ReadUInt16(),//right
reader.ReadInt16());//value
remainingBytes -= 6;
}
}
private TrueTypeFontTable ReadKerningTable(uint length, TrueTypeTableEntryList list, BigEndianReader reader)
{
KerningTable kern = new KerningTable(reader.Position);
kern.TableVersion = reader.ReadUShortVersion();
ushort tcount = reader.ReadUInt16();
kern.TableCount = tcount;
if (tcount > 0)
{
kern.SubTables = new List <KerningSubTable>();
for (int i = 0; i < tcount; i++)
{
KerningSubTable sub = new KerningSubTable();
sub.Version = reader.ReadUShortVersion();
sub.Length = reader.ReadUInt16();
sub.Coverage = (KerningCoverage)reader.ReadByte();
sub.Format = (KerningFormat)reader.ReadByte();
if (sub.Format == KerningFormat.Format0)
{
KerningFormat0 fdata = new KerningFormat0();
fdata.PairCount = reader.ReadUInt16();
fdata.SearchRange = reader.ReadUInt16();
fdata.EntrySelector = reader.ReadUInt16();
fdata.RangeShift = reader.ReadUInt16();
List <Kerning0Pair> pairs = new List <Kerning0Pair>();
for (int j = 0; j < fdata.PairCount; j++)
{
Kerning0Pair pair = new Kerning0Pair();
pair.LeftGlyphIndex = reader.ReadUInt16();
pair.RightGlyphIndex = reader.ReadUInt16();
pair.Value = reader.ReadInt16();
pairs.Add(pair);
}
fdata.KerningPairs = pairs;
sub.KerningFormatData = fdata;
}
kern.SubTables.Add(sub);
}
}
return(kern);
}
void ReadSubTableFormat0(BinaryReader reader, int remainingBytes)
{
ushort npairs = reader.ReadUInt16();
ushort searchRange = reader.ReadUInt16();
ushort entrySelector = reader.ReadUInt16();
ushort rangeShift = reader.ReadUInt16();
//----------------------------------------------
var ksubTable = new KerningSubTable(npairs);
this.kernSubTables.Add(ksubTable);
while (npairs > 0)
{
ksubTable.AddKernPair(
reader.ReadUInt16(), //left//
reader.ReadUInt16(), //right
reader.ReadInt16()); //value
npairs--;
}
}
public static KerningTable Load(BinaryReader reader)
{
// Type | Field | Description
// -------|----------|-----------------------------------------
// uint16 | version | Table version number(0)
// uint16 | nTables | Number of subtables in the kerning table.
ushort version = reader.ReadUInt16();
ushort subtableCount = reader.ReadUInt16();
var tables = new List <KerningSubTable>(subtableCount);
for (int i = 0; i < subtableCount; i++)
{
var t = KerningSubTable.Load(reader); // returns null for unknown/supported table format
if (t != null)
{
tables.Add(t);
}
}
return(new KerningTable(tables.ToArray()));
}
