public Face LoadSystemFace(Library library, string face, ref FontStyles style)
{
string file = null;
//TODO: Implement style matching on Linux
using (var pat = FcPattern.FromFamilyName(face)) {
//Match Exactly
using (var objset = new FcObjectSet())
{
objset.Add(Fc.FC_FAMILY);
objset.Add(Fc.FC_STYLE);
objset.Add(Fc.FC_FILE);
using (var fset = FcFontSet.FromList(fcconfig, pat, objset))
{
for (int i = 0; i < fset.Count; i++)
{
if (fset[i].GetString(Fc.FC_FILE, 0, ref file) == FcResult.Match)
{
var fc = new Face(library, file);
var fs = FontStyles.Regular;
if ((fc.StyleFlags & StyleFlags.Bold) != 0)
{
fs |= FontStyles.Bold;
}
if ((fc.StyleFlags & StyleFlags.Italic) != 0)
{
fs |= FontStyles.Italic;
}
if (fs == style)
{
return(fc);
}
else
{
fc.Dispose();
}
}
}
}
}
//Match normally
style = FontStyles.Regular;
pat.ConfigSubstitute(fcconfig, FcMatchKind.Pattern);
pat.DefaultSubstitute();
FcResult result;
using (var font = pat.Match(fcconfig, out result)) {
if (font.GetString(Fc.FC_FILE, 0, ref file) == FcResult.Match)
{
return(new Face(library, file));
}
}
}
//This shouldn't be thrown since fontconfig substitutes, but have this just in case
throw new Exception("Font not found: " + face);
}
public byte[] GetMonospaceBytes()
{
string file = null;
using (var pat = FcPattern.FromFamilyName("monospace")) {
//Match normally
pat.ConfigSubstitute(fcconfig, FcMatchKind.Pattern);
pat.DefaultSubstitute();
FcResult result;
using (var font = pat.Match(fcconfig, out result)) {
if (font.GetString(Fc.FC_FILE, 0, ref file) == FcResult.Match)
{
return(System.IO.File.ReadAllBytes(file));
}
}
}
throw new Exception("No system monospace font found");
}
public Face GetFallbackFace(Library library, uint cp)
{
string file = null;
using (var pat = FcPattern.FromFamilyName("sans"))
{
using (var cs = new FcCharSet())
{
pat.ConfigSubstitute(fcconfig, FcMatchKind.Pattern);
pat.DefaultSubstitute();
cs.AddCharacter(cp);
pat.AddCharSet("charset", cs);
FcResult result;
using (var font = pat.Match(fcconfig, out result))
{
if (font.GetString(Fc.FC_FILE, 0, ref file) == FcResult.Match)
{
if (!fallbacks.ContainsKey(file))
{
fallbacks.Add(file, new Face(library, file));
}
return(fallbacks[file]);
}
}
}
}
if (sans != null)
{
return(sans);
}
var style = FontStyles.Regular;
sans = LoadSystemFace(library, "sans", ref style);
return(sans);
}