/// <summary>
/// So this weird shit works as follows:
/// PdfSharp passes a font name, whether or not it is italic
/// and/or bold and expects a unique name based on that. <see cref="ResolveTypeface"/>
/// Then it passes this name to <see cref="GetFont"/> and gets the binary data of the font
/// So this constructor basically looks up the truetype fonts on a unix system and
/// loads the binary data of the ones we are interested in
/// <see cref="fontInfoCache"/>
/// <see cref="fontDataCache"/>
/// </summary>
public NClassFontResolver()
{
fontInfoCache = EnumerateUnixFonts();
fontDataCache = new Dictionary <string, byte[]>();
var style = Style.CurrentStyle;
foreach (var fontProperty in fontProperties)
{
var font = fontProperty(style);
var facename = FontInfo.FromFont(font).FaceName;
if (!fontInfoCache.ContainsKey(facename))
{
continue;
}
var fontInfo = fontInfoCache[facename];
byte[] data;
using (var fs = new FileStream(fontInfo.Filepath, FileMode.Open, FileAccess.Read, FileShare.Read))
{
var size = fs.Length;
if (size > int.MaxValue)
{
throw new Exception("Font file is too big.");
}
var length = (int)size;
data = new byte[length];
var read = fs.Read(data, 0, length);
if (length != read)
{
throw new Exception("Reading font file failed.");
}
}
fontDataCache[facename] = data;
}
}