public static TypefaceCollectionEntry Get(FontFamily fontFamily, FontWeight fontWeight, FontStyle fontStyle)
{
if (fontFamily.Key != null)
{
return(SKTypefaceCollectionCache.GetOrAddTypefaceCollection(fontFamily)
.Get(fontFamily.Name, fontWeight, fontStyle));
}
var typefaceCollection = s_cache.GetOrAdd(fontFamily.Name, new ConcurrentDictionary <FontKey, TypefaceCollectionEntry>());
var key = new FontKey(fontWeight, fontStyle);
if (typefaceCollection.TryGetValue(key, out var entry))
{
return(entry);
}
var skTypeface = SKTypeface.FromFamilyName(fontFamily.Name, (SKFontStyleWeight)fontWeight,
SKFontStyleWidth.Normal, (SKFontStyleSlant)fontStyle) ?? SKTypeface.Default;
var typeface = new Typeface(fontFamily.Name, fontWeight, fontStyle);
entry = new TypefaceCollectionEntry(typeface, skTypeface);
typefaceCollection[key] = entry;
return(entry);
}
public void AddEntry(string familyName, FontKey key, TypefaceCollectionEntry entry)
{
if (!_fontFamilies.TryGetValue(familyName, out var fontFamily))
{
fontFamily = new ConcurrentDictionary <FontKey, TypefaceCollectionEntry>();
_fontFamilies.TryAdd(familyName, fontFamily);
}
fontFamily.TryAdd(key, entry);
}
/// <summary>
/// Creates the custom font collection.
/// </summary>
/// <param name="fontFamily">The font family.</param>
/// <returns></returns>
private static SKTypefaceCollection CreateCustomFontCollection(FontFamily fontFamily)
{
var fontAssets = FontFamilyLoader.LoadFontAssets(fontFamily.Key);
var typeFaceCollection = new SKTypefaceCollection();
var assetLoader = AvaloniaLocator.Current.GetService <IAssetLoader>();
foreach (var asset in fontAssets)
{
var assetStream = assetLoader.Open(asset);
var skTypeface = SKTypeface.FromStream(assetStream);
var typeface = new Typeface(fontFamily, (FontWeight)skTypeface.FontWeight, (FontStyle)skTypeface.FontSlant);
var entry = new TypefaceCollectionEntry(typeface, skTypeface);
typeFaceCollection.AddEntry(skTypeface.FamilyName, new FontKey(typeface.Weight, typeface.Style), entry);
}
return(typeFaceCollection);
}
