private void DisconnectAcryilicBrush()
{
if (backdropBrush != null)
{
backdropBrush.Dispose();
backdropBrush = null;
}
if (CompositionBrush != null)
{
CompositionBrush.Dispose();
CompositionBrush = null;
}
}
private void UserControl_Unloaded(object sender, RoutedEventArgs e)
{
StopAnimating();
timer.Tick -= Timer_Tick;
compositor.Dispose();
effectBrush.Dispose();
backdropBrush.Dispose();
effectFactory.Dispose();
hostVisual.Dispose();
if (glassVisual != null)
{
glassVisual.Dispose();
}
}
public static void InitializeBlur(UIElement uiElement)
{
Visual hostVisual = ElementCompositionPreview.GetElementVisual(uiElement);
Compositor compositor = hostVisual.Compositor;
string name = "backdropBrush";
GaussianBlurEffect gausianBlur = new GaussianBlurEffect()
{
BlurAmount = 30f,
BorderMode = EffectBorderMode.Hard,
Source = new ArithmeticCompositeEffect()
{
MultiplyAmount = 0,
Source1Amount = 1f,
Source1 = new CompositionEffectSourceParameter(name),
Source2Amount = 0f,
Source2 = new ColorSourceEffect()
{
Color = Color.FromArgb(255, 245, 245, 245)
}
}
};
CompositionEffectFactory effectFactory = compositor.CreateEffectFactory(gausianBlur);
CompositionBackdropBrush backdropBrush = compositor.CreateBackdropBrush();
CompositionEffectBrush effectBrush = effectFactory.CreateBrush();
effectBrush.SetSourceParameter(name, backdropBrush);
SpriteVisual glassVisual = compositor.CreateSpriteVisual();
glassVisual.Brush = effectBrush;
ElementCompositionPreview.SetElementChildVisual(uiElement, glassVisual);
ExpressionAnimation bindSizeAnimation = compositor.CreateExpressionAnimation("hostVisual.Size");
bindSizeAnimation.SetReferenceParameter("hostVisual", hostVisual);
glassVisual.StartAnimation("Size", bindSizeAnimation);
effectFactory.Dispose();
gausianBlur.Dispose();
backdropBrush.Dispose();
}
