public static IntPtr CreateMultiUserData <T1, T2, T3> (T1 wrappedDelegate1, T2 wrappedDelegate2, T3 wrappedDelegate3, object userData, bool makeWeak = false)
where T1 : Delegate
where T2 : Delegate
where T3 : Delegate
{
userData = makeWeak ? new WeakReference(userData) : userData;
var userDataDelegate = new UserDataDelegate(() => userData);
var del = new GetMultiDelegateDelegate((type) => {
if (type == typeof(T1))
{
return(wrappedDelegate1);
}
if (type == typeof(T2))
{
return(wrappedDelegate2);
}
if (type == typeof(T3))
{
return(wrappedDelegate3);
}
if (type == typeof(UserDataDelegate))
{
return(userDataDelegate);
}
throw new ArgumentOutOfRangeException(nameof(type));
});
Create(del, out _, out var ctx);
return(ctx);
}
public static IntPtr CreateUserData(object userData, bool makeWeak = false)
{
userData = makeWeak ? new WeakReference(userData) : userData;
var del = new UserDataDelegate(() => userData);
Create(del, out _, out var ctx);
return(ctx);
}
public void SetFontFunctions(FontFunctions fontFunctions, object fontData, ReleaseDelegate destroy)
{
_ = fontFunctions ?? throw new ArgumentNullException(nameof(fontFunctions));
var container = new FontUserData(this, fontData);
var actualFontData = new UserDataDelegate(() => container);
var ctx = DelegateProxies.CreateMulti(actualFontData, destroy);
HarfBuzzApi.hb_font_set_funcs(Handle, fontFunctions.Handle, ctx, DelegateProxies.ReleaseDelegateProxyForMulti);
}
public Face(GetTableDelegate getTable, ReleaseDelegate destroy)
: this(IntPtr.Zero)
{
if (getTable == null)
{
throw new ArgumentNullException(nameof(getTable));
}
var actualUserData = new UserDataDelegate(() => this);
Handle = HarfBuzzApi.hb_face_create_for_tables(
DelegateProxies.GetTableDelegateProxy,
DelegateProxies.CreateMulti(getTable, actualUserData, destroy),
DelegateProxies.ReleaseDelegateProxyForMulti);
}
