/// <summary>
/// Create a new <see cref="TableRegister"/>.
/// </summary>
/// <param name="builder">The builder with necessary tables set.</param>
internal TableRegister(Builder builder)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
HeaderTable = builder.HeaderTable ?? throw new ArgumentException("The builder did not contain the header table");
GlyphTable = builder.GlyphDataTable;
HorizontalHeaderTable = builder.HorizontalHeaderTable ?? throw new ArgumentException("The builder did not contain the horizontal header table.");
HorizontalMetricsTable = builder.HorizontalMetricsTable;
IndexToLocationTable = builder.IndexToLocationTable;
MaximumProfileTable = builder.MaximumProfileTable ?? throw new ArgumentException("The builder did not contain the maximum profile table.");
NameTable = builder.NameTable;
PostScriptTable = builder.PostScriptTable;
CMapTable = builder.CMapTable;
KerningTable = builder.KerningTable;
Os2Table = builder.Os2Table;
}
public static Font ReadFromStream(Stream stream)
{
var font = new Font();
var reader = new BinaryReader(stream);
// Offset Table
font.OffsetTable = OffsetTable.Read(reader);
// Head
var headTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HeadTable.Tag);
stream.Seek(headTableRecord.Offset, SeekOrigin.Begin);
font.HeadTable = HeadTable.Read(reader);
// Horizontal Header
var horizontalHeaderTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HorizontalHeaderTable.Tag);
stream.Seek(horizontalHeaderTableRecord.Offset, SeekOrigin.Begin);
font.HorizontalHeaderTable = HorizontalHeaderTable.Read(reader);
// Maximum Profile
var maximumProfileTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == MaximumProfileTableBase.Tag);
stream.Seek(maximumProfileTableRecord.Offset, SeekOrigin.Begin);
var maximumProfileTableVersion = Math.Round(reader.ReadFixedPointNumber(), 2);
if (maximumProfileTableVersion == 0.5m)
{
font.MaximumProfileTable = MaximumProfileTableV0_5.Read(reader, maximumProfileTableVersion);
}
else if (maximumProfileTableVersion == 1.0m)
{
font.MaximumProfileTable = MaximumProfileTableV1.Read(reader, maximumProfileTableVersion);
}
// Horizontal Metrics
var horizontalMetricsTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == HorizontalMetricsTable.Tag);
stream.Seek(horizontalMetricsTableRecord.Offset, SeekOrigin.Begin);
font.HorizontalMetricsTable = HorizontalMetricsTable.Read(reader,
font.HorizontalHeaderTable.NumberOfHMetrics,
font.MaximumProfileTable.NumGlyphs);
// Glyph
var glyphTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == GlyphTable.Tag);
font.GlyphTable = new GlyphTable(reader, glyphTableRecord.Offset);
// IndexLocation
var indexLocationTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == IndexLocationTableBase.Tag);
stream.Seek(indexLocationTableRecord.Offset, SeekOrigin.Begin);
if (font.HeadTable.IndexToLocFormat == 0)
{
font.IndexLocationTable = IndexLocationShortFormatTable.Read(reader, font.MaximumProfileTable.NumGlyphs);
}
else
{
font.IndexLocationTable = IndexLocationLongFormatTable.Read(reader, font.MaximumProfileTable.NumGlyphs);
}
// PostScript
var postScriptTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == PostScriptTable.Tag);
stream.Seek(postScriptTableRecord.Offset, SeekOrigin.Begin);
font.PostScriptTable = PostScriptTable.Read(reader);
// OS/2 and Windows
var os2TableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == Os2Table.Tag);
stream.Seek(os2TableRecord.Offset, SeekOrigin.Begin);
font.Os2Table = Os2Table.Read(reader);
// CharacterMap
var characterMapTableRecord = font.OffsetTable.TableRecords.Single(x => x.TableTag == CharacterMapTable.Tag);
stream.Seek(characterMapTableRecord.Offset, SeekOrigin.Begin);
font.CharacterMapTable = CharacterMapTable.Read(reader);
return(font);
}
