private void LoadImage(Uri uri)
{
// Create CompositionSurfaceBrush
var surfaceBrush = _compositor.CreateSurfaceBrush();
// Create an image source to load
CompositionImage imageSource = _imageFactory.CreateImageFromUri(uri);
surfaceBrush.Surface = imageSource.Surface;
_brush.SetSourceParameter("source", surfaceBrush);
RotateHue(0);
}
public async void animateBackGround(string img)
{
await CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () => {
blurredVisual.StartAnimation(nameof(Opacity), fadeOutAnimation);
var image = imageFactory.CreateImageFromUri(new Uri(img));
var surfaceBrush = compositor.CreateSurfaceBrush(image.Surface);
var effectBrush = effectFactory.CreateBrush();
effectBrush.SetSourceParameter("source", surfaceBrush);
blurredVisual.Brush = effectBrush;
blurredVisual.Size = getBackgroundSize();
blurredVisual.CenterPoint = new Vector3(getBackgroundSize().X / 2, getBackgroundSize().Y / 2, 0);
ElementCompositionPreview.SetElementChildVisual(bgImage, blurredVisual);
blurredVisual.StartAnimation(nameof(Opacity), fadeInAnimation);
});
}
/// <summary>
/// Creates CompositionImages based on the URIs in ItemsSource
/// </summary>
private void CreateImages()
{
_images.Clear();
var options = new CompositionImageOptions
{
DecodeWidth = DecodeWidth,
DecodeHeight = DecodeHeight
};
if ((ItemsSource == null) || !ItemsSource.Any())
{
return;
}
foreach (var uri in ItemsSource)
{
_images.Add(_imageFactory.CreateImageFromUri(uri, options));
}
}
/// <summary>
/// Bind Compositon Images to the list which need to continue to the next page on navigation.
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void FruitsList_ContainerContentChanging(ListViewBase sender, ContainerContentChangingEventArgs args)
{
//Get the clicked Item
var item = args.Item as Item;
//Get hold of the UIElement to bind items.
var contentPanel = args.ItemContainer.ContentTemplateRoot as StackPanel;
//Create Composition Image from data source
var parentRectangle = _compositor.CreateContainerVisual();
var rectangleColor = _compositor.CreateSpriteVisual();
rectangleColor.Size = new System.Numerics.Vector2(40, 40);
//Use ImageFactory to load image from URI.
try
{
CompositionImageFactory imageFactory = CompositionImageFactory.CreateCompositionImageFactory(_compositor);
CompositionImageOptions options = new CompositionImageOptions()
{
DecodeWidth = 160,
DecodeHeight = 160,
};
CompositionImage image = imageFactory.CreateImageFromUri(item.imageUri, options);
rectangleColor.Brush = _compositor.CreateSurfaceBrush(image.Surface);
}
catch
{
rectangleColor.Brush = _compositor.CreateColorBrush(Windows.UI.Colors.Red);
}
//Bind Composition Image to UIElement - Rectangle in this case.
Rectangle rectImage = contentPanel.FindName("imageItem") as Rectangle;
parentRectangle.Children.InsertAtTop(rectangleColor);
item.imageContainerVisual = parentRectangle;
item.rectImage = rectImage;
ElementCompositionPreview.SetElementChildVisual(rectImage, parentRectangle);
}
private CompositionSurfaceBrush CreateBrushFromAsset(string name, out Size size)
{
Uri localUri = new Uri("ms-appx:///Assets/" + name);
CompositionImageFactory surfaceFactory
= CompositionImageFactory.CreateCompositionImageFactory(m_compositor);
var image = surfaceFactory.CreateImageFromUri(localUri);
bool isCompleted = false;
var waitHandle = new AutoResetEvent(false);
image.ImageLoaded += (CompositionImage sender, CompositionImageLoadStatus status) =>
{
isCompleted = true;
waitHandle.Set();
};
while (!isCompleted)
{
waitHandle.WaitOne();
}
size = image.Size;
return(m_compositor.CreateSurfaceBrush(image.Surface));
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
// Initialize Composition UI infrastructure.
_leftRoot = LeftContainer.GetVisual();
_middleRoot = MiddleContainer.GetVisual();
_rightRoot = RightContainer.GetVisual();
_compositor = _leftRoot.Compositor;
_imageFactory = CompositionImageFactory.CreateCompositionImageFactory(_compositor);
// Hook the sprite visuals into the XAML visual tree.
_leftSpriteVisual = _compositor.CreateSpriteVisual();
var side = (float)Math.Min(LeftPresenter.ActualWidth, LeftPresenter.ActualHeight);
_leftSpriteVisual.Size = new Vector2(side, side);
_leftRoot.Children.InsertAtTop(_leftSpriteVisual);
_middleSpriteVisual = _compositor.CreateSpriteVisual();
side = (float)Math.Min(MiddlePresenter.ActualWidth, MiddlePresenter.ActualHeight);
_middleSpriteVisual.Size = new Vector2(side, side);
_middleRoot.Children.InsertAtTop(_middleSpriteVisual);
_rightSpriteVisual = _compositor.CreateSpriteVisual();
side = (float)Math.Min(RightPresenter.ActualWidth, RightPresenter.ActualHeight);
_rightSpriteVisual.Size = new Vector2(side, side);
_rightRoot.Children.InsertAtTop(_rightSpriteVisual);
// Create CompositionSurfaceBrush
_imageBrush = _compositor.CreateSurfaceBrush();
// Create an image source to load
var imageSource = _imageFactory.CreateImageFromUri(new Uri("ms-appx:///Assets/flowers.jpg"));
_imageBrush.Surface = imageSource.Surface;
// Create and apply the first effect.
_firstEffect = new SaturationEffect
{
Name = "firstEffect",
Source = new CompositionEffectSourceParameter("source")
};
var firstEffectFactory = _compositor.CreateEffectFactory(_firstEffect, new[] { "firstEffect.Saturation" });
_effectBrush1 = firstEffectFactory.CreateBrush();
_leftSpriteVisual.Brush = _effectBrush1;
// Create and apply the second effect.
var secondEffect = new InvertEffect
{
Name = "secondEffect",
Source = new CompositionEffectSourceParameter("source")
};
var secondEffectFactory = _compositor.CreateEffectFactory(secondEffect);
_effectBrush2 = secondEffectFactory.CreateBrush();
_middleSpriteVisual.Brush = _effectBrush2;
// Create and apply the combined effect.
_combinedEffect = new InvertEffect
{
Name = "chained",
Source = _firstEffect
};
var combinedEffectFactory = _compositor.CreateEffectFactory(_combinedEffect, new[] { "firstEffect.Saturation" });
_combinedBrush = combinedEffectFactory.CreateBrush();
_rightSpriteVisual.Brush = _combinedBrush;
// Chain the brushes
_effectBrush1.SetSourceParameter("source", _imageBrush);
_effectBrush2.SetSourceParameter("source", _imageBrush);
_combinedBrush.SetSourceParameter("source", _imageBrush);
}