public static GlyphDataTable Load(TrueTypeDataBytes data, TrueTypeHeaderTable table, HeaderTable headerTable,
IndexToLocationTable indexToLocationTable)
{
data.Seek(table.Offset);
var offsets = indexToLocationTable.GlyphOffsets;
var entryCount = offsets.Length;
var glyphCount = entryCount - 1;
var glyphs = new IGlyphDescription[glyphCount];
for (var i = 0; i < glyphCount; i++)
{
if (offsets[i] == offsets[i + 1])
{
// empty glyph
continue;
}
data.Seek(offsets[i] + table.Offset);
var contourCount = data.ReadSignedShort();
var minX = data.ReadSignedShort();
var minY = data.ReadSignedShort();
var maxX = data.ReadSignedShort();
var maxY = data.ReadSignedShort();
var bounds = new TrueTypeGlyphBounds(minX, minY, maxX, maxY);
// If the number of contours is greater than or equal zero it's a simple glyph.
if (contourCount >= 0)
{
glyphs[i] = ReadSimpleGlyph(data, contourCount, bounds);
}
else
{
}
}
return(new GlyphDataTable(table, glyphs));
}
public static IndexToLocationTable Load(TrueTypeDataBytes data, TrueTypeHeaderTable table, HeaderTable headerTable, BasicMaximumProfileTable maximumProfileTable)
{
const short shortFormat = 0;
const short longFormat = 1;
data.Seek(table.Offset);
var format = headerTable.IndexToLocFormat;
var glyphCount = maximumProfileTable.NumberOfGlyphs + 1;
var offsets = new long[glyphCount];
switch (format)
{
case shortFormat:
{ // The local offset divided by 2 is stored.
for (int i = 0; i < glyphCount; i++)
{
offsets[i] = data.ReadUnsignedShort() * 2;
}
break;
}
case longFormat:
{
// The actual offset is stored.
data.ReadUnsignedIntArray(offsets, glyphCount);
break;
}
default:
throw new InvalidOperationException($"The format {format} was invalid for the index to location (loca) table.");
}
return(new IndexToLocationTable(table, offsets));
}
