public static GlyphDataTable Load(TrueTypeDataBytes data, TrueTypeHeaderTable table, TableRegister.Builder tableRegister)
{
data.Seek(table.Offset);
var indexToLocationTable = tableRegister.IndexToLocationTable;
var offsets = indexToLocationTable.GlyphOffsets;
var entryCount = offsets.Length;
var glyphCount = entryCount - 1;
var glyphs = new IGlyphDescription[glyphCount];
var emptyGlyph = Glyph.Empty(tableRegister.HeaderTable.Bounds);
var compositeLocations = new Dictionary <int, TemporaryCompositeLocation>();
for (var i = 0; i < glyphCount; i++)
{
if (offsets[i] == offsets[i + 1])
{
// empty glyph
glyphs[i] = emptyGlyph;
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 PdfRectangle(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
{
compositeLocations.Add(i, new TemporaryCompositeLocation(data.Position, bounds, contourCount));
}
}
// Build composite glyphs by combining simple and other composite glyphs.
foreach (var compositeLocation in compositeLocations)
{
glyphs[compositeLocation.Key] = ReadCompositeGlyph(data, compositeLocation.Value, compositeLocations, glyphs, emptyGlyph);
}
return(new GlyphDataTable(table, glyphs));
}
private IReadOnlyList <IGlyphDescription> ReadGlyphs()
{
var data = tableBytes;
var offsets = glyphOffsets;
var entryCount = offsets.Count;
var glyphCount = entryCount - 1;
var result = new IGlyphDescription[glyphCount];
var emptyGlyph = Glyph.Empty(maxGlyphBounds);
var compositeLocations = new Dictionary <int, TemporaryCompositeLocation>();
for (var i = 0; i < glyphCount; i++)
{
if (offsets[i + 1] <= offsets[i])
{
// empty glyph
result[i] = emptyGlyph;
continue;
}
data.Seek(offsets[i]);
var contourCount = data.ReadSignedShort();
var minX = data.ReadSignedShort();
var minY = data.ReadSignedShort();
var maxX = data.ReadSignedShort();
var maxY = data.ReadSignedShort();
var bounds = new PdfRectangle(minX, minY, maxX, maxY);
// If the number of contours is greater than or equal zero it's a simple glyph.
if (contourCount >= 0)
{
result[i] = ReadSimpleGlyph(data, contourCount, bounds);
}
else
{
compositeLocations.Add(i, new TemporaryCompositeLocation(data.Position, bounds, contourCount));
}
}
// Build composite glyphs by combining simple and other composite glyphs.
foreach (var compositeLocation in compositeLocations)
{
result[compositeLocation.Key] = ReadCompositeGlyph(data, compositeLocation.Value, compositeLocations, result, emptyGlyph);
}
return(result);
}