public ImageLoader(Compositor compositor)
{
Debug.Assert(compositor != null && _compositor == null);
_compositor = compositor;
_drawingLock = new object();
_deviceLostHelper = new DeviceLostHelper();
_canvasDevice = new CanvasDevice();
_canvasDevice.DeviceLost += DeviceLost;
_deviceLostHelper.WatchDevice(_canvasDevice);
_deviceLostHelper.DeviceLost += DeviceRemoved;
_graphicsDevice = CanvasComposition.CreateCompositionGraphicsDevice(_compositor, _canvasDevice);
_graphicsDevice.RenderingDeviceReplaced += RenderingDeviceReplaced;
}
public void TestMethod1()
{
var helper = new DeviceLostHelper();
}
private void DeviceRemoved(DeviceLostHelper sender, object args)
{
_canvasDevice.RaiseDeviceLost();
}
private void OnLoaded(object sender, RoutedEventArgs e)
{
//SampleHelper deviceHelper = new SampleHelper();
DeviceLostHelper lostHelper = new DeviceLostHelper();
_compositor = ElementCompositionPreview.GetElementVisual(this).Compositor;
_generator = _compositor.CreateCompositionGenerator();
_width = 300f;
_height = 300f;
// Create the combined geometry
var ellipse1 = CanvasGeometry.CreateEllipse(_generator.Device, _width / 2, _height / 2, 0.45f * _width, 0.225f * _height);
var ellipse2 = CanvasGeometry.CreateEllipse(_generator.Device, _width / 2, _height / 2, 0.225f * _width, 0.45f * _height);
_combinedGeometry = ellipse1.CombineWith(ellipse2, Matrix3x2.Identity, CanvasGeometryCombine.Union);
// Create custom shaped visual using CompositionMaskBrush
_visual1 = _compositor.CreateSpriteVisual();
_visual1.Size = new Vector2(_width, _height);
_visual1.Offset = new Vector3(((CompositionGrid1.ActualWidth - _width) / 2).ToSingle(),
((CompositionGrid1.ActualHeight - _height) / 2).ToSingle(), 0);
var visualChild = _compositor.CreateSpriteVisual();
visualChild.Size = new Vector2(_width * 0.75f, _height * 0.75f);
visualChild.Offset = new Vector3(_width * 0.125f, _height * 0.125f, 0);
_visual1.Children.InsertAtTop(visualChild);
// Create the CompositionMask
var compositionMask = _generator.CreateMaskSurface(_visual1.Size.ToSize(), _combinedGeometry);
// Create SurfaceBrush from CompositionMask
var mask = _compositor.CreateSurfaceBrush(compositionMask.Surface);
var source = _compositor.CreateColorBrush(Color.FromArgb(255, 0, 173, 239));
// Create mask brush
var maskBrush = _compositor.CreateMaskBrush();
maskBrush.Mask = mask;
maskBrush.Source = source;
_visual1.Brush = maskBrush;
ElementCompositionPreview.SetElementChildVisual(CompositionGrid1, _visual1);
// Create custom shaped visual using CompositionMaskBrush
_visual2 = _compositor.CreateSpriteVisual();
_visual2.Size = new Vector2(_width, _height);
_visual2.Offset = new Vector3(((CompositionGrid2.ActualWidth - _width) / 2).ToSingle(),
((CompositionGrid2.ActualHeight - _height) / 2).ToSingle(), 0);
// Create the CompositionMask filled with color
var compositionMask2 =
_generator.CreateGeometrySurface(_visual2.Size.ToSize(), _combinedGeometry, Color.FromArgb(192, 192, 0, 0));
// Create SurfaceBrush from CompositionMask
var surfaceBrush = _compositor.CreateSurfaceBrush(compositionMask2.Surface);
_visual2.Brush = surfaceBrush;
ElementCompositionPreview.SetElementChildVisual(CompositionGrid2, _visual2);
// Initialize the visuals for the Animated Canvas
// Create the container to host the visuals
var container = _compositor.CreateContainerVisual();
container.Size = new Vector2(CompositionGrid3.ActualWidth.ToSingle(), CompositionGrid3.ActualHeight.ToSingle());
// Background Visual
_bgVisual = _compositor.CreateSpriteVisual();
_bgVisual.Size = new Vector2(_width, _height);
_bgVisual.Offset = new Vector3(((CompositionGrid3.ActualWidth - _width) / 2).ToSingle(),
((CompositionGrid3.ActualHeight - _height) / 2).ToSingle(), 0);
var radians = ((45f * Math.PI) / 180).ToSingle();
var bgGeometry = _combinedGeometry.Transform(Matrix3x2.CreateRotation(radians, new Vector2(_width / 2, _height / 2)));
var bgMask = _generator.CreateGeometrySurface(_bgVisual.Size.ToSize(), bgGeometry, Color.FromArgb(255, 0, 173, 239));
var bgBrush = _compositor.CreateSurfaceBrush(bgMask.Surface);
_bgVisual.Brush = bgBrush;
container.Children.InsertAtBottom(_bgVisual);
// Animated Visual
_animatedVisual = _compositor.CreateSpriteVisual();
_animatedVisual.Size = new Vector2(_width, _height);
_animatedVisual.Offset = new Vector3(((CompositionGrid3.ActualWidth - _width) / 2).ToSingle(),
((CompositionGrid3.ActualHeight - _height) / 2).ToSingle(), 0);
// Create the Excluded geometry
_outerGeometry = CanvasGeometry.CreateRectangle(_generator.Device, 0, 0, _width, _height);
var excludedGeometry = _outerGeometry.CombineWith(_combinedGeometry, Matrix3x2.Identity, CanvasGeometryCombine.Exclude);
// Create the CompositionMask
_animatedMaskSurface = _generator.CreateGeometrySurface(_animatedVisual.Size.ToSize(), excludedGeometry, Color.FromArgb(192, 192, 0, 0));
var animBrush = _compositor.CreateSurfaceBrush(_animatedMaskSurface.Surface);
_animatedVisual.Brush = animBrush;
container.Children.InsertAtTop(_animatedVisual);
ElementCompositionPreview.SetElementChildVisual(CompositionGrid3, container);
}
