public static FontProperties FontProperties(MetafileReader reader, CommandHeader commandHeader)
{
// FONT PROPERTIES: has a variable number of parameter 3-tuples (P1,P2,P3); each parameter 3-tuple contains
// P1: (index) property indicator, valid values are
// 1 font index
// 2 standard version
// 3 design source
// 4 font family
// 5 posture
// 6 weight
// 7 proportionate width
// 8 included glyph collections
// 9 included glyphs
// 10 design size
// 11 minimum size
// 12 maximum size
// 13 design group
// 14 structure
// >14 reserved for registered values
// P2: (integer) priority, valid values are non-negative integers.
// P3: (structured data record) property value record, each record contains a single member and is comprised of
// [data type indicator, data element count, data element(s)].
var properties = new List <FontProperty>();
while (reader.HasMoreData((reader.Descriptor.IndexPrecision + reader.Descriptor.IntegerPrecision) / 8))
{
int propertyIndicator = reader.ReadIndex();
int priority = reader.ReadInteger();
// The SDR for each of the standardized properties contains only one member (typed sequence) [ISO/IEC 8632-1 7.3.21]
var record = ApplicationStructureDescriptorReader.ReadStructuredDataRecord(reader);
properties.Add(new FontProperty(propertyIndicator, priority, record.Elements.First()));
}
return(new FontProperties(properties.ToArray()));
}
public static EscapeCommand Escape(MetafileReader reader, CommandHeader commandHeader)
{
// P1: (integer) escape identifier
// P2: (data record) escape data record; data records are bound as strings in this encoding.
int identifier = reader.ReadInteger();
// attempt to parse the data record as structured record, in case it is a known one
// otherwise it is probably application specific and cannot be assumed to be a structured record
StructuredDataRecord dataRecord;
if (EscapeCommand.KnownEscapeTypes.ContainsKey(identifier))
{
dataRecord = ApplicationStructureDescriptorReader.ReadStructuredDataRecord(reader);
}
else
{
dataRecord = new StructuredDataRecord(new[]
{
new StructuredDataElement(DataTypeIndex.String, new object[] { reader.ReadString() }),
});
}
return(new EscapeCommand(identifier, dataRecord));
}
