public static object ValidateFontFamily(string fontFamilyList, SvgDocument doc)
{
// Split font family list on "," and then trim start and end spaces and quotes.
var fontParts = (fontFamilyList ?? string.Empty).Split(new[] { ',' }).Select(fontName => fontName.Trim(new[] { '"', ' ', '\'' }));
var families = System.Drawing.FontFamily.Families;
Func<FontFamily, bool> getFamily;
FontFamily family;
IEnumerable<SvgFontFace> sFaces;
// Find a the first font that exists in the list of installed font families.
//styles from IE get sent through as lowercase.
foreach (var f in fontParts)
{
if (doc.FontDefns().TryGetValue(f, out sFaces)) return sFaces;
getFamily = new Func<FontFamily, bool>(ff => string.Equals(ff.Name, f, StringComparison.OrdinalIgnoreCase));
family = families.FirstOrDefault(getFamily);
if (family != null) return family;
family = PrivateFonts.Families.FirstOrDefault(getFamily);
if (family != null) return family;
switch (f.ToLower())
{
case "serif":
return System.Drawing.FontFamily.GenericSerif;
case "sans-serif":
return System.Drawing.FontFamily.GenericSansSerif;
case "monospace":
return System.Drawing.FontFamily.GenericMonospace;
}
}
// No valid font family found from the list requested.
return System.Drawing.FontFamily.GenericSansSerif;
}
