private static string[] GetGlyphNamesByFormat(TrueTypeDataBytes data, BasicMaximumProfileTable maximumProfileTable,
float formatType)
{
string[] glyphNames;
if (Math.Abs(formatType - 1) < float.Epsilon)
{
glyphNames = new string[WindowsGlyphList4.NumberOfMacGlyphs];
for (var i = 0; i < WindowsGlyphList4.MacGlyphNames.Count; i++)
{
glyphNames[i] = WindowsGlyphList4.MacGlyphNames[i];
}
}
else if (Math.Abs(formatType - 2) < float.Epsilon)
{
glyphNames = GetFormat2GlyphNames(data);
}
else if (Math.Abs(formatType - 2.5) < float.Epsilon)
{
var glyphNameIndex = new int[maximumProfileTable?.NumberOfGlyphs ?? 0];
for (var i = 0; i < glyphNameIndex.Length; i++)
{
var offset = data.ReadSignedByte();
glyphNameIndex[i] = i + 1 + offset;
}
glyphNames = new string[glyphNameIndex.Length];
for (var i = 0; i < glyphNames.Length; i++)
{
var name = WindowsGlyphList4.MacGlyphNames[glyphNameIndex[i]];
if (name != null)
{
glyphNames[i] = name;
}
}
}
else if (Math.Abs(formatType - 3) < float.Epsilon)
{
glyphNames = new string[0];
}
else
{
throw new InvalidOperationException($"Format type {formatType} is not supported for the PostScript table.");
}
return(glyphNames);
}
private static string[] GetGlyphNamesByFormat(TrueTypeDataBytes data, BasicMaximumProfileTable maximumProfileTable,
float formatType)
{
string[] glyphNames;
if (Math.Abs(formatType - 1) < float.Epsilon)
{
glyphNames = new string[WindowsGlyphList4.NumberOfMacGlyphs];
for (var i = 0; i < WindowsGlyphList4.MacGlyphNames.Count; i++)
{
glyphNames[i] = WindowsGlyphList4.MacGlyphNames[i];
}
}
else if (Math.Abs(formatType - 2) < float.Epsilon)
{
glyphNames = GetFormat2GlyphNames(data);
}
else if (Math.Abs(formatType - 2.5) < float.Epsilon)
{
var glyphNameIndex = new int[maximumProfileTable?.NumberOfGlyphs ?? 0];
for (var i = 0; i < glyphNameIndex.Length; i++)
{
var offset = data.ReadSignedByte();
glyphNameIndex[i] = i + 1 + offset;
}
glyphNames = new string[glyphNameIndex.Length];
for (var i = 0; i < glyphNames.Length; i++)
{
var name = WindowsGlyphList4.MacGlyphNames[glyphNameIndex[i]];
if (name != null)
{
glyphNames[i] = name;
}
}
}
else if (Math.Abs(formatType - 3) < float.Epsilon)
{
glyphNames = EmptyArray <string> .Instance;
}
else
{
glyphNames = EmptyArray <string> .Instance;
}
return(glyphNames);
}
public static PostScriptTable Load(TrueTypeDataBytes data, TrueTypeHeaderTable table, BasicMaximumProfileTable maximumProfileTable)
{
data.Seek(table.Offset);
var formatType = data.Read32Fixed();
var italicAngle = data.Read32Fixed();
var underlinePosition = data.ReadSignedShort();
var underlineThickness = data.ReadSignedShort();
var isFixedPitch = data.ReadUnsignedInt();
var minMemType42 = data.ReadUnsignedInt();
var maxMemType42 = data.ReadUnsignedInt();
var mimMemType1 = data.ReadUnsignedInt();
var maxMemType1 = data.ReadUnsignedInt();
var glyphNames = GetGlyphNamesByFormat(data, maximumProfileTable, formatType);
return(new PostScriptTable(table, (decimal)formatType, (decimal)italicAngle,
underlinePosition, underlineThickness, isFixedPitch,
minMemType42, maxMemType42, mimMemType1,
maxMemType1, glyphNames));
}
