/// <summary>
/// Unregisters an element from the out-of-band renderer.
/// </summary>
/// <param name="element">The element to unregister.</param>
public void Unregister(UIElement element)
{
Contract.Require(element, nameof(element));
Contract.EnsureNotDisposed(this, Disposed);
foreach (var registeredElement in registeredElements)
{
var weakRefTarget = (UIElement)registeredElement.Target;
if (weakRefTarget != element)
{
continue;
}
for (UpfPool <OutOfBandRenderTarget> .PooledObject current = element.OutOfBandRenderTarget, next = null; current != null; current = next)
{
next = current.Value.NextInternal;
current.Value.Resize(1, 1);
current.Value.NextInternal = null;
renderTargetPool.Release(current);
}
registeredElements.Remove(registeredElement);
element.OutOfBandRenderTarget = null;
registeredElement.Target = null;
WeakReferencePool.Instance.Release(registeredElement);
break;
}
}
/// <summary>
/// Ensures that the out-of-band renderer's internal pools have been created.
/// </summary>
public void InitializePools()
{
if (renderTargetPool != null)
{
return;
}
renderTargetPool = new UpfPool <OutOfBandRenderTarget>(Ultraviolet, 8, 32, () => new OutOfBandRenderTarget(Ultraviolet));
}