protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
for (var i = 0; i < ItemContainerTransitions.Count; i++)
{
if (ItemContainerTransitions[i] is EntranceThemeTransition)
{
ItemContainerTransitions.RemoveAt(i);
}
}
}
protected override void OnApplyTemplate()
{
base.OnApplyTemplate();
// Remove the entrance animation on the item containers.
for (int i = 0; i < ItemContainerTransitions.Count; i++)
{
if (ItemContainerTransitions[i] is EntranceThemeTransition)
{
ItemContainerTransitions.RemoveAt(i);
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="AdaptiveGridView"/> class.
/// </summary>
public AdaptiveGridView()
{
IsTabStop = false;
SizeChanged += OnSizeChanged;
ItemClick += OnItemClick;
if (Items != null)
{
Items.VectorChanged += ItemsOnVectorChanged;
}
Loaded += OnLoaded;
Unloaded += OnUnloaded;
// Define ItemContainerStyle in code rather than using the DefaultStyle
// to avoid having to define the entire style of a GridView. This can still
// be set by the enduser to values of their chosing
var style = new Style(typeof(GridViewItem));
style.Setters.Add(new Setter(HorizontalContentAlignmentProperty, HorizontalAlignment.Stretch));
style.Setters.Add(new Setter(VerticalContentAlignmentProperty, VerticalAlignment.Stretch));
ItemContainerStyle = style;
// Set up opacity and scale animations.
var compositor = ElementCompositionPreview.GetElementVisual(this).Compositor;
_scaleAnimation = compositor.CreateVector3KeyFrameAnimation();
_scaleAnimation.Duration = TimeSpan.FromMilliseconds(AnimationDuration);
_scaleAnimation.InsertKeyFrame(0, new Vector3(0.8f, 0.8f, 0));
_scaleAnimation.InsertKeyFrame(1, Vector3.One, EaseOutCubic(compositor));
_opacityAnimation = compositor.CreateScalarKeyFrameAnimation();
_opacityAnimation.Duration = TimeSpan.FromMilliseconds(AnimationDuration);
_opacityAnimation.InsertKeyFrame(1, 1.0f, EaseOutCubic(compositor));
// Remove the default entrance transition if existed.
RegisterPropertyChangedCallback(ItemContainerTransitionsProperty, (s, e) =>
{
var entranceThemeTransition = ItemContainerTransitions.OfType <EntranceThemeTransition>().SingleOrDefault();
if (entranceThemeTransition != null)
{
ItemContainerTransitions.Remove(entranceThemeTransition);
}
});
}
