private IGlyphTransformationTable ParseLigatureSubstitutionTable(int subTableOffset, dynamic fontTable, LookupFlags lookupFlags)
{
var type = typeof(GlyphTypeface).Assembly.GetType("MS.Internal.Shaping.LigatureSubstitutionSubtable");
dynamic table = new AccessPrivateWrapper(type.Instantiate(subTableOffset));
ushort format = table.Format(fontTable.Wrapped);
if (format != 1)
{
throw new UnknownTableFormatException(type, format);
}
var ligatureSetTables = this.GetEnumerableFromInternalList(
() => table.LigatureSetCount(fontTable.Wrapped),
i => (dynamic) new AccessPrivateWrapper(table.LigatureSet(fontTable.Wrapped, i))).ToList();
var ligatures = ligatureSetTables
.Select(
ligatureSetTable =>
this.GetEnumerableFromInternalList(
() => ligatureSetTable.LigatureCount(fontTable.Wrapped),
i => (dynamic) new AccessPrivateWrapper(ligatureSetTable.Ligature(fontTable.Wrapped, i)))
.Select(
ligatureTable =>
new Ligature
{
LigatureGlyphId = (ushort)ligatureTable.LigatureGlyph(fontTable.Wrapped),
ComponentGlyphIds = this.GetEnumerableFromInternalList(
() => (ushort)(ligatureTable.ComponentCount(fontTable.Wrapped) - 1),
i => (ushort)ligatureTable.Component(fontTable.Wrapped, (ushort)(i + 1)))
}).ToList()).ToList();
return(new LigatureSubstitutionTable
{
Coverage = this.ParseCoverageTable(fontTable, new AccessPrivateWrapper(table.Coverage(fontTable.Wrapped))),
LigatureSets = ligatures.ToList(),
LookupFlags = lookupFlags
});
}
