/// <summary>
/// Gets an existing font source or creates a new one.
/// A new font source is cached in font factory.
/// </summary>
public static XFontSource GetOrCreateFrom(byte[] bytes)
{
ulong key = FontHelper.CalcChecksum(bytes);
if (!FontFactory.TryGetFontSourceByKey(key, out XFontSource fontSource))
{
fontSource = new XFontSource(bytes, key);
// Theoretically the font source could be created by a differend thread in the meantime.
fontSource = FontFactory.CacheFontSource(fontSource);
}
return(fontSource);
}
static XFontSource GetOrCreateFrom(string typefaceKey, byte[] fontBytes)
{
ulong key = FontHelper.CalcChecksum(fontBytes);
if (FontFactory.TryGetFontSourceByKey(key, out XFontSource fontSource))
{
// The font source already exists, but is not yet cached under the specified typeface key.
FontFactory.CacheExistingFontSourceWithNewTypefaceKey(typefaceKey, fontSource);
}
else
{
// No font source exists. Create new one and cache it.
fontSource = new XFontSource(fontBytes, key);
FontFactory.CacheNewFontSource(typefaceKey, fontSource);
}
return(fontSource);
}