/// <summary>
/// Reads the contents of the "hmtx" table from the supplied stream
/// at the current position.
/// </summary>
/// <param name="reader"></param>
protected internal override void Read(FontFileReader reader)
{
FontFileStream stream = reader.Stream;
// Obtain number of horizonal metrics from 'hhea' table
int numberOfHMetrics = reader.GetHorizontalHeaderTable().HMetricCount;
// Obtain glyph count from 'maxp' table
int numGlyphs = reader.GetMaximumProfileTable().GlyphCount;
// Metrics might not be supplied for each glyph. For example, if
// the font is monospaced the hMetrics array will only contain a
// single entry
int metricsSize = (numGlyphs > numberOfHMetrics) ? numGlyphs : numberOfHMetrics;
metrics = new List <HorizontalMetric>();//(metricsSize);
for (int i = 0; i < numberOfHMetrics; i++)
{
metrics.Add(new HorizontalMetric(stream.ReadUShort(), stream.ReadShort()));
}
// Fill in missing widths
if (numberOfHMetrics < metricsSize)
{
HorizontalMetric lastHMetric = metrics[metrics.Count - 1];
for (int i = numberOfHMetrics; i < numGlyphs; i++)
{
metrics.Add(
new HorizontalMetric(lastHMetric.AdvanceWidth, stream.ReadShort()));
}
}
}
/// <summary>
/// Reads the contents of the "hhea" table from the current position
/// in the supplied stream.
/// </summary>
/// <param name="reader"></param>
protected internal override void Read(FontFileReader reader)
{
FontFileStream stream = reader.Stream;
versionNo = stream.ReadFixed();
ascender = stream.ReadFWord();
decender = stream.ReadFWord();
lineGap = stream.ReadFWord();
advanceWidthMax = stream.ReadUFWord();
minLeftSideBearing = stream.ReadFWord();
minRightSideBearing = stream.ReadFWord();
xMaxExtent = stream.ReadFWord();
caretSlopeRise = stream.ReadShort();
caretSlopeRun = stream.ReadShort();
caretOffset = stream.ReadShort();
stream.ReadShort();
stream.ReadShort();
stream.ReadShort();
stream.ReadShort();
metricDataFormat = stream.ReadShort();
numberOfHMetrics = stream.ReadUShort();
}
/// <summary>
/// Reads the contents of the "head" table from the current position
/// in the supplied stream.
/// </summary>
/// <param name="reader"></param>
protected internal override void Read(FontFileReader reader)
{
FontFileStream stream = reader.Stream;
versionNo = stream.ReadFixed();
fontRevision = stream.ReadFixed();
checkSumAdjustment = stream.ReadULong();
magicNumber = stream.ReadULong();
flags = stream.ReadUShort();
unitsPermEm = stream.ReadUShort();
// Some fonts have dodgy date offsets that cause AddSeconds to throw an exception
createDate = GetDate(stream.ReadLongDateTime());
updateDate = GetDate(stream.ReadLongDateTime());
xMin = stream.ReadShort();
yMin = stream.ReadShort();
xMax = stream.ReadShort();
yMax = stream.ReadShort();
macStyle = stream.ReadUShort();
lowestRecPPEM = stream.ReadUShort();
fontDirectionHint = stream.ReadShort();
indexToLocFormat = stream.ReadShort();
glyphDataFormat = stream.ReadShort();
}
/// <summary>
/// Reads the contents of the "os/2" table from the supplied stream
/// at the current position.
/// </summary>
/// <param name="reader"></param>
protected internal override void Read(FontFileReader reader)
{
FontFileStream stream = reader.Stream;
version = stream.ReadUShort();
avgCharWidth = stream.ReadShort();
usWeightClass = stream.ReadUShort();
usWidthClass = stream.ReadUShort();
// According to the OpenType spec, bit 0 must be zero.
fsType = (ushort)(stream.ReadUShort() & ~1);
subscriptXSize = stream.ReadShort();
subscriptYSize = stream.ReadShort();
subscriptXOffset = stream.ReadShort();
subscriptYOffset = stream.ReadShort();
superscriptXSize = stream.ReadShort();
superscriptYSize = stream.ReadShort();
superscriptXOffset = stream.ReadShort();
superscriptYOffset = stream.ReadShort();
strikeoutSize = stream.ReadShort();
strikeoutPosition = stream.ReadShort();
short familyClass = stream.ReadShort();
classID = (byte)(familyClass >> 8);
subclassID = (byte)(familyClass & 255);
stream.Read(panose, 0, panose.Length);
unicodeRange1 = stream.ReadULong();
unicodeRange2 = stream.ReadULong();
unicodeRange3 = stream.ReadULong();
unicodeRange4 = stream.ReadULong();
vendorID[0] = stream.ReadChar();
vendorID[1] = stream.ReadChar();
vendorID[2] = stream.ReadChar();
vendorID[3] = stream.ReadChar();
fsSelection = stream.ReadUShort();
usFirstCharIndex = stream.ReadUShort();
usLastCharIndex = stream.ReadUShort();
typoAscender = stream.ReadShort();
typoDescender = stream.ReadShort();
typoLineGap = stream.ReadShort();
usWinAscent = stream.ReadUShort();
usWinDescent = stream.ReadUShort();
codePageRange1 = stream.ReadULong();
codePageRange2 = stream.ReadULong();
sxHeight = stream.ReadShort();
sCapHeight = stream.ReadShort();
usDefaultChar = stream.ReadUShort();
usBreakChar = stream.ReadUShort();
usMaxContext = stream.ReadUShort();
}
