public Tuple <double, double, double> MeasureFontGlyph(uint gid)
{
var hadv = FtFace.GetAdvance(gid, LoadFlags.NoScale | LoadFlags.IgnoreTransform);
var vadv = FtFace.GetAdvance(gid, LoadFlags.NoScale | LoadFlags.IgnoreTransform | LoadFlags.VerticalLayout);
return(new Tuple <double, double, double>(hadv.Value / (float)FtFace.UnitsPerEM, vadv.Value / (float)FtFace.UnitsPerEM, FtFace.Ascender / (float)FtFace.UnitsPerEM));
}
internal Rect BoundGlyph(uint glyphIndex, StyleSimulations style)
{
var recip = 1 / (float)FtFace.UnitsPerEM;
//var strength = 0.02f;
var trm = AdjustGlyphWidth(glyphIndex);
var m = new FTMatrix((int)trm.M11 * 65536, (int)trm.M21 * 65536, (int)trm.M12 * 65536, (int)trm.M22 * 65536);
var v = new FTVector(Fixed16Dot16.FromDouble(trm.OffsetX * 65536), Fixed16Dot16.FromDouble(trm.OffsetY * 65536));
FtFace.SetCharSize(Fixed26Dot6.FromInt32(FtFace.UnitsPerEM), Fixed26Dot6.FromInt32(FtFace.UnitsPerEM), 72, 72);
FtFace.SetTransform(m, v);
FtFace.LoadGlyph(glyphIndex, LoadFlags.NoBitmap | LoadFlags.NoHinting, LoadTarget.Normal);
/*if (style == StyleSimulations.BoldSimulation)
* {
* FtFace.Glyph.Outline.Embolden(Fixed26Dot6.FromDouble(strength * FtFace.UnitsPerEM));
* FtFace.Glyph.Outline.Translate((int) (-strength * 0.5 * FtFace.UnitsPerEM), (int) (-strength * 0.5 * FtFace.UnitsPerEM));
* }*/
var box = FtFace.Glyph.GetGlyph().GetCBox(GlyphBBoxMode.Pixels);
var rect = new Rect(new Point(box.Left * recip, box.Top * recip), new Point(box.Right * recip, box.Bottom * recip));
if (rect.IsEmpty)
{
rect = new Rect(new Point(trm.OffsetX, trm.OffsetY), new Point(trm.OffsetX, trm.OffsetY));
}
return(rect);
}
public uint EncodeFontChar(uint code)
{
var gid = FtFace.GetCharIndex(code);
if (gid == 0 && FtFace.CharMap != null && FtFace.CharMap.PlatformId == PlatformId.Microsoft && FtFace.CharMap.EncodingId == 0)
{
gid = FtFace.GetCharIndex(0xF000 | code);
}
return(gid);
}
protected override void DisposeCore()
{
FtFace?.Dispose();
}
