private void CleanUp()
{
effectBrush?.Dispose();
effectFactory?.Dispose();
glassEffect?.Dispose();
}
private void Canvas_CreateResources(CanvasAnimatedControl sender, Microsoft.Graphics.Canvas.UI.CanvasCreateResourcesEventArgs args)
{
Debug.WriteLine("CreateResource");
if (blurEffect != null)
{
blurEffect.Dispose();
}
if (this.AllowBlur == true)
{
Debug.WriteLine("CreateResource new GaussianBlurEffect");
blurEffect = new GaussianBlurEffect();
}
this.CreateResources?.Invoke(sender, args);
}
public void Dispose()
{
_cl?.Dispose();
_cl = null;
morphology?.Dispose();
morphology = null;
blur?.Dispose();
blur = null;
}
public void Dispose()
{
if (tempSurface != null)
{
bound = default(Rect);
tempSurface.Dispose();
blur.Dispose();
canDraw = false;
}
}
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();
}
