/// <summary>
/// Provides derived classes an opportunity to handle changes
/// to the BackgroundFx property.
/// </summary>
/// <param name="oldBackgroundFx">The old BackgroundFx value</param>
/// <param name="newBackgroundFx">The new BackgroundFx value</param>
private async void OnBackgroundFxChanged(
CpuShaderEffect oldBackgroundFx, CpuShaderEffect newBackgroundFx)
{
if (_renderedGrid != null &&
_renderedGrid.ActualHeight > 0)
{
await this.UpdateFxAsync();
}
}
/// <summary>
/// Handles changes to the BackgroundFx property.
/// </summary>
/// <param name="d">
/// The <see cref="DependencyObject"/> on which
/// the property has changed value.
/// </param>
/// <param name="e">
/// Event data that is issued by any event that
/// tracks changes to the effective value of this property.
/// </param>
private static void OnBackgroundFxChanged(
DependencyObject d, DependencyPropertyChangedEventArgs e)
{
var target = (FxContentControl)d;
CpuShaderEffect oldBackgroundFx = (CpuShaderEffect)e.OldValue;
CpuShaderEffect newBackgroundFx = target.BackgroundFx;
target.OnBackgroundFxChanged(oldBackgroundFx, newBackgroundFx);
}
