public Panose(PanoseFamily family, SerifStyle style)
{
Family = family;
Style = style;
IsSansSerifStyle = PanoseParser.IsSansSerif(Style);
IsSerifStyle =
Style != SerifStyle.Any &&
Style != SerifStyle.NoFit &&
Family != PanoseFamily.NoFit &&
Family != PanoseFamily.Script &&
Family != PanoseFamily.Decorative &&
!IsSansSerifStyle;
}
public static Panose Parse(CanvasFontFace fontFace)
{
byte[] panose = fontFace.Panose;
// The contents of the Panose byte array depends on the value of the first byte.
// See https://docs.microsoft.com/en-us/windows/win32/api/dwrite_1/ns-dwrite_1-dwrite_panose
// for how the Family value changes the meaning of the following 9 bytes.
PanoseFamily family = (PanoseFamily)panose[0];
// Only fonts in TextDisplay family will identify their serif style
SerifStyle style = SerifStyle.Any;
if (family == PanoseFamily.TextDisplay)
{
style = (SerifStyle)panose[1];
}
// Warning - not all fonts store correct values for Panose information.
// If expanding PanoseParser in the future to read all values, direct casting
// enums may lead to errors - safer parsing may be needed to take into account
// faulty panose classifications.
return(new Panose(family, style));
}
