public int CompareTo(object obj)
{
TypefaceListItem item = obj as TypefaceListItem;
if (item == null)
{
return(-1);
}
// Sort all simulated faces after all non-simulated faces.
if (_simulated != item._simulated)
{
return(_simulated ? 1 : -1);
}
// If weight differs then sort based on weight (lightest first).
int difference = Typeface.Weight.ToOpenTypeWeight() - item.Typeface.Weight.ToOpenTypeWeight();
if (difference != 0)
{
return(difference > 0 ? 1 : -1);
}
// If style differs then sort based on style (Normal, Italic, then Oblique).
FontStyle thisStyle = Typeface.Style;
FontStyle otherStyle = item.Typeface.Style;
if (thisStyle != otherStyle)
{
if (thisStyle == FontStyles.Normal)
{
// This item is normal style and should come first.
return(-1);
}
else if (otherStyle == FontStyles.Normal)
{
// The other item is normal style and should come first.
return(1);
}
else
{
// Neither is normal so sort italic before oblique.
return((thisStyle == FontStyles.Italic) ? -1 : 1);
}
}
// If stretch differs then sort based on stretch (Normal first, then numerically).
FontStretch thisStretch = Typeface.Stretch;
FontStretch otherStretch = item.Typeface.Stretch;
if (thisStretch != otherStretch)
{
if (thisStretch == FontStretches.Normal)
{
// This item is normal stretch and should come first.
return(-1);
}
else if (otherStretch == FontStretches.Normal)
{
// The other item is normal stretch and should come first.
return(1);
}
else
{
// Neither is normal so sort numerically.
return(thisStretch.ToOpenTypeStretch() < otherStretch.ToOpenTypeStretch() ? -1 : 0);
}
}
// They're the same.
return(0);
}