public static CssValue Font_Weight_Computed(ICssProperty Property)
{/* Docs: https://drafts.csswg.org/css-fonts-4/#valdef-font-weight-bolder */
if (Property == null)
{
throw new ArgumentNullException(nameof(Property));
}
Contract.EndContractBlock();
// handle font-weight related keywords
// This function wouldnt even be called if the value werent a keyword
var keyword = (Property as CssProperty).Specified.AsEnum <EFontWeight>();
int Weight = 400;
switch (keyword)
{
case EFontWeight.Normal:
Weight = 400;
break;
case EFontWeight.Bold:
Weight = 700;
break;
case EFontWeight.Bolder:
{ /* Docs: https://drafts.csswg.org/css-fonts-4/#relative-weights */
CssValue inherited = Property.Find_Inherited_Value();
int w = inherited.AsInteger();
if (w < 100)
{
Weight = 400;
}
else if (w >= 100 && w < 350)
{
Weight = 400;
}
else if (w >= 350 && w < 550)
{
Weight = 700;
}
else if (w >= 550 && w < 750)
{
Weight = 900;
}
else if (w >= 750 && w < 900)
{
Weight = 900;
}
else
{
Weight = 900;
}
}
break;
case EFontWeight.Lighter:
{ /* Docs: https://drafts.csswg.org/css-fonts-4/#relative-weights */
CssValue inherited = Property.Find_Inherited_Value();
int w = inherited.AsInteger();
if (w < 100)
{
Weight = 100;
}
else if (w >= 100 && w < 350)
{
Weight = 100;
}
else if (w >= 350 && w < 550)
{
Weight = 100;
}
else if (w >= 550 && w < 750)
{
Weight = 400;
}
else if (w >= 750 && w < 900)
{
Weight = 700;
}
else
{
Weight = 700;
}
}
break;
}
return(CssValue.From(Weight));
}