private void ContainerItem_Loaded(object sender, RoutedEventArgs e)
{
var itemsPanel = (ItemsStackPanel)feeditems.ItemsPanelRoot;
var itemContainer = (ListViewItem)sender;
var itemIndex = feeditems.IndexFromContainer(itemContainer);
var relativeIndex = itemIndex - itemsPanel.FirstVisibleIndex;
Grid uc;
if (itemContainer.ContentTemplateRoot as SwipeControl != null)
{
uc = (itemContainer.ContentTemplateRoot as SwipeControl).Content as Grid;
}
else
{
uc = itemContainer.ContentTemplateRoot as Grid;
}
if (itemContainer.Content != ViewModel.PersistedEpisode && itemIndex >= 0 && itemIndex >= itemsPanel.FirstVisibleIndex && itemIndex <= itemsPanel.LastVisibleIndex)
{
var itemVisual = ElementCompositionPreview.GetElementVisual(uc);
ElementCompositionPreview.SetIsTranslationEnabled(uc, true);
var staggerDelay = TimeSpan.FromMilliseconds(relativeIndex * 100);
var offsetAnimation = VisualHelpers.CreateHorizontalOffsetAnimation(0.7, 150, staggerDelay.TotalSeconds);
itemVisual.StartAnimation("Translation.X", offsetAnimation);
var opacityAnimation = VisualHelpers.CreateOpacityAnimation(0.5);
opacityAnimation.DelayBehavior = Windows.UI.Composition.AnimationDelayBehavior.SetInitialValueBeforeDelay;
opacityAnimation.DelayTime = staggerDelay;
itemVisual.StartAnimation("Opacity", opacityAnimation);
}
itemContainer.Loaded -= this.ContainerItem_Loaded;
}
