private async void HandleCapabilitiesChangedAsync(CompositionCapabilities sender, object args)
{
_areEffectsSupported = _capabilities.AreEffectsSupported();
_areEffectsFast = _capabilities.AreEffectsFast();
GalleryUI.NotifyCompositionCapabilitiesChanged(_areEffectsSupported, _areEffectsFast);
SampleDefinitions.RefreshSampleList();
//
// Let the user know that the display config has changed and some samples may or may
// not be available
//
if (!_areEffectsSupported || !_areEffectsFast)
{
string message;
if (!_areEffectsSupported)
{
message = "Your display configuration may have changed. Your current graphics hardware does not support effects. Some samples will not be available";
}
else
{
message = "Your display configuration may have changed. Your current graphics hardware does not support advanced effects. Some samples will not be available";
}
var messageDialog = new MessageDialog(message);
messageDialog.Commands.Add(new UICommand("Close"));
// Show the message dialog
await messageDialog.ShowAsync();
}
}
public MainPage(Rect imageBounds)
{
_instance = this;
// Get hardware capabilities and register changed event listener
#if SDKVERSION_INSIDER
_capabilities = CompositionCapabilities.GetForCurrentView();
_capabilities.Changed += HandleCapabilitiesChangedAsync;
_areEffectsSupported = _capabilities.AreEffectsSupported();
_areEffectsFast = _capabilities.AreEffectsFast();
#else
_areEffectsSupported = true;
_areEffectsFast = true;
#endif
_runtimeCapabilities = new RuntimeSupportedSDKs();
this.InitializeComponent();
// Initialize the image loader
ImageLoader.Initialize(ElementCompositionPreview.GetElementVisual(this).Compositor);
// Show the custome splash screen
ShowCustomSplashScreen(imageBounds);
SystemNavigationManager.GetForCurrentView().BackRequested += OnBackRequested;
}
private void ToggleSwitch_Toggled(object sender, RoutedEventArgs e)
{
ToggleSwitch toggleSwitch = sender as ToggleSwitch;
if (toggleSwitch != null && SimulatorDropdown != null)
{
if (toggleSwitch.IsOn == true)
{
// Show simulation options
SimulatorDropdown.Visibility = Visibility.Visible;
// Simulate capabilities
_activeCapabilityWrapper = (CapabilityWrapper)SimulatorDropdown.SelectedItem;
}
else
{
// Hide simulation options
SimulatorDropdown.Visibility = Visibility.Collapsed;
// Update to use actual capabilities
_activeCapabilityWrapper = new CapabilityWrapper("", _liveCapabilities.AreEffectsSupported(), _liveCapabilities.AreEffectsFast());
}
UpdateAlbumArt();
}
}
/// <summary>
/// Handles hardware capabilities changed updates
/// </summary>
private void HandleCapabilitiesChanged(CompositionCapabilities sender, object args)
{
_liveCapabilities = sender;
if (ToggleSwitch.IsOn == false)
{
// If not in simulate mode, update to wrapper to use live capabilities and update view
_activeCapabilityWrapper = new CapabilityWrapper("", _liveCapabilities.AreEffectsSupported(), _liveCapabilities.AreEffectsFast());
UpdateAlbumArt();
}
}
public MainPage(Rect imageBounds)
{
_instance = this;
_runtimeCapabilities = new RuntimeSupportedSDKs();
_currentFrame = null;
// Get hardware capabilities and register changed event listener only when targeting the
// appropriate SDK version and the runtime supports this version
if (_runtimeCapabilities.IsSdkVersionRuntimeSupported(RuntimeSupportedSDKs.SDKVERSION._15063))
{
#if SDKVERSION_15063
_capabilities = CompositionCapabilities.GetForCurrentView();
_capabilities.Changed += HandleCapabilitiesChangedAsync;
_areEffectsSupported = _capabilities.AreEffectsSupported();
_areEffectsFast = _capabilities.AreEffectsFast();
#endif
}
else
{
_areEffectsSupported = true;
_areEffectsFast = true;
}
this.InitializeComponent();
_mainNavigation = new MainNavigationViewModel();
// Initialize the image loader
ImageLoader.Initialize(ElementCompositionPreview.GetElementVisual(this).Compositor);
// Show the custome splash screen
ShowCustomSplashScreen(imageBounds);
CoreApplication.GetCurrentView().TitleBar.ExtendViewIntoTitleBar = false;
#if SDKVERSION_16299
// Apply acrylic styling to the navigation and caption
if (_runtimeCapabilities.IsSdkVersionRuntimeSupported(RuntimeSupportedSDKs.SDKVERSION._16299))
{
// Extend the app into the titlebar so that we can apply acrylic
CoreApplication.GetCurrentView().TitleBar.ExtendViewIntoTitleBar = true;
ApplicationViewTitleBar titleBar = ApplicationView.GetForCurrentView().TitleBar;
titleBar.ButtonBackgroundColor = Colors.Transparent;
titleBar.ButtonInactiveBackgroundColor = Colors.Transparent;
titleBar.ButtonForegroundColor = Colors.Black;
// Apply a customized control template to the pivot
MainPivot.Template = (ControlTemplate)Application.Current.Resources["PivotControlTemplate"];
// Apply acrylic to the main navigation
TitleBarRow.Height = new GridLength(31);
TitleBarGrid.Background = (Brush)Application.Current.Resources["SystemControlChromeMediumLowAcrylicWindowMediumBrush"];
}
#endif
}
/// <summary>
/// Updates the effects applied and visuals shown based on information retrieved from
/// calling the capabilities API
/// </summary>
private void UpdateAlbumArt()
{
if (_capabilities.AreEffectsSupported())
{
//
// If effects are supported, add effects to the background image and
// add a masked circle image in the center for better visual appearance.
//
if (!_containsCircleImage)
{
// Create circle mask
var circleMaskSurface = _imageLoader.CreateCircleSurface(200, Colors.White);
// Create image visual to use as the circle-masked center image
_circleImageVisual = _compositor.CreateSpriteVisual();
_circleImageVisual.Size = new Vector2((float)ImageCanvas.ActualWidth / 2, (float)ImageCanvas.ActualHeight / 2);
var xOffset = (float)(ImageCanvas.ActualWidth / 2 - _circleImageVisual.Size.X / 2);
var yOffset = (float)(ImageCanvas.ActualHeight / 2 - _circleImageVisual.Size.Y / 2);
_circleImageVisual.Offset = new Vector3(xOffset, yOffset, 0);
// Create circle image surface
CompositionSurfaceBrush circleSurfaceBrush = _compositor.CreateSurfaceBrush();
circleSurfaceBrush.Surface = circleMaskSurface.Surface;
circleSurfaceBrush.Stretch = CompositionStretch.Uniform;
// Apply mask to visual
CompositionMaskBrush maskBrush = _compositor.CreateMaskBrush();
maskBrush.Source = _imageSurfaceBrush;
maskBrush.Mask = circleSurfaceBrush;
_circleImageVisual.Brush = maskBrush;
_imageContainer.Children.InsertAtTop(_circleImageVisual);
_containsCircleImage = true;
}
//
// Create saturation effect, which will be either used alone if effects are slow, or chained
// with blur if effects are fast
//
var saturationEffect = new SaturationEffect
{
Saturation = 0.3f,
Source = new CompositionEffectSourceParameter("SaturationSource")
};
if (_capabilities.AreEffectsFast())
{
// Create blur effect and chain with saturation effect
GaussianBlurEffect chainedEffect = new GaussianBlurEffect()
{
Name = "Blur",
Source = saturationEffect, //takes saturation effect as input
BlurAmount = 6.0f,
BorderMode = EffectBorderMode.Hard,
Optimization = EffectOptimization.Balanced
};
CompositionEffectFactory chainedEffectFactory = _compositor.CreateEffectFactory(chainedEffect);
CompositionEffectBrush effectBrush = chainedEffectFactory.CreateBrush();
effectBrush.SetSourceParameter("SaturationSource", _imageSurfaceBrush);
_backgroundImageVisual.Brush = effectBrush;
CapabilityText = "Effects are supported and fast. Background image is blurred and desaturated.";
}
else
{
// If effects are slow but supported use desaturation effect since it is less expensive than blur
CompositionEffectFactory saturationEffectFactory = _compositor.CreateEffectFactory(saturationEffect);
CompositionEffectBrush saturationBrush = saturationEffectFactory.CreateBrush();
saturationBrush.SetSourceParameter("SaturationSource", _imageSurfaceBrush);
_backgroundImageVisual.Brush = saturationBrush;
CapabilityText = "Effects are supported but not fast. Background image is desaturated.";
}
}
else
{
//
// If effects are not supported, just use the image as the background with no effects
// and remove the center circle image to declutter the UI.
//
if (_containsCircleImage)
{
_imageContainer.Children.Remove(_circleImageVisual);
_containsCircleImage = false;
}
_backgroundImageVisual.Brush = _imageSurfaceBrush;
CapabilityText = "Effects not supported. No effects are applied.";
}
}
