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138 changes: 138 additions & 0 deletions
138
src/Uno.UI.Runtime.Skia.Wpf/UI/Controls/UnoCompositeWindowHost.cs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| #nullable enable | ||
|
|
||
| using SkiaSharp; | ||
| using Uno.Disposables; | ||
| using Uno.Foundation.Logging; | ||
| using Uno.UI.Hosting; | ||
| using Uno.UI.Runtime.Skia.Wpf.Extensions; | ||
| using Uno.UI.Runtime.Skia.Wpf.Hosting; | ||
| using Uno.UI.Runtime.Skia.Wpf.Rendering; | ||
| using WpfCanvas = System.Windows.Controls.Canvas; | ||
| using WpfContentPresenter = System.Windows.Controls.ContentPresenter; | ||
| using WpfControl = System.Windows.Controls.Control; | ||
| using WpfFrameworkPropertyMetadata = System.Windows.FrameworkPropertyMetadata; | ||
| using MUX = Microsoft.UI.Xaml; | ||
|
|
||
| namespace Uno.UI.Runtime.Skia.Wpf.UI.Controls; | ||
|
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| internal class UnoCompositeWindowHost : WpfControl, IWpfWindowHost | ||
| { | ||
| private const string NativeOverlayLayerHost = "NativeOverlayLayerHost"; | ||
| private const string BottomLayerHost = "BottomLayerHost"; | ||
| private const string FlyoutLayerHost = "FlyoutLayerHost"; | ||
|
|
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| private readonly UnoWpfWindow _wpfWindow; | ||
| private readonly MUX.Window _winUIWindow; | ||
|
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| private readonly RenderingLayerHost _bottomLayer; | ||
| private readonly WpfCanvas _nativeOverlayLayer; | ||
| private readonly RenderingLayerHost _flyoutLayer; | ||
|
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| private readonly SerialDisposable _backgroundDisposable = new(); | ||
|
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| static UnoCompositeWindowHost() | ||
| { | ||
| DefaultStyleKeyProperty.OverrideMetadata( | ||
| typeof(UnoCompositeWindowHost), | ||
| new WpfFrameworkPropertyMetadata(typeof(UnoCompositeWindowHost))); | ||
| } | ||
|
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| public UnoCompositeWindowHost(UnoWpfWindow wpfWindow, MUX.Window winUIWindow) | ||
| { | ||
| _wpfWindow = wpfWindow; | ||
| _winUIWindow = winUIWindow; | ||
|
|
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| // We need to set the content here because the RenderingLayerHost needs to call Window.GetWindow | ||
| wpfWindow.Content = this; | ||
|
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| FocusVisualStyle = null; | ||
|
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| _bottomLayer = new RenderingLayerHost(WpfRendererProvider.CreateForHost(this, false)); | ||
| _nativeOverlayLayer = new WpfCanvas(); | ||
| _flyoutLayer = new RenderingLayerHost(WpfRendererProvider.CreateForHost(this, true)); | ||
|
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| Loaded += WpfHost_Loaded; | ||
| Unloaded += (_, _) => _backgroundDisposable.Dispose(); | ||
|
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| UpdateRendererBackground(); | ||
| _backgroundDisposable.Disposable = _winUIWindow.RegisterBackgroundChangedEvent((_, _) => UpdateRendererBackground()); | ||
| } | ||
|
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| public WpfControl FlyoutLayer => _flyoutLayer; | ||
| public WpfControl BottomLayer => _flyoutLayer; | ||
|
|
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| private void WpfHost_Loaded(object _, System.Windows.RoutedEventArgs __) | ||
| { | ||
| // Avoid dotted border on focus. | ||
| if (Parent is WpfControl control) | ||
| { | ||
| control.FocusVisualStyle = null; | ||
| _bottomLayer.FocusVisualStyle = null; | ||
| _flyoutLayer.FocusVisualStyle = null; | ||
| } | ||
| } | ||
|
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| void UpdateRendererBackground() | ||
| { | ||
| // the flyout layer always has a transparent background so that elements underneath can be seen. | ||
| _flyoutLayer.Renderer.BackgroundColor = SKColors.Transparent; | ||
|
|
||
| if (_winUIWindow.Background is MUX.Media.SolidColorBrush brush) | ||
| { | ||
| _bottomLayer.Renderer.BackgroundColor = brush.Color; | ||
| _wpfWindow.Background = new System.Windows.Media.SolidColorBrush(brush.Color.ToWpfColor()); | ||
| } | ||
| else | ||
| { | ||
| if (this.Log().IsEnabled(LogLevel.Warning)) | ||
| { | ||
| this.Log().Warn($"This platform only supports SolidColorBrush for the Window background"); | ||
| } | ||
| } | ||
| } | ||
|
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| public override void OnApplyTemplate() | ||
| { | ||
| base.OnApplyTemplate(); | ||
|
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| if (GetTemplateChild(BottomLayerHost) is WpfContentPresenter bottomLayerHost) | ||
| { | ||
| bottomLayerHost.Content = _bottomLayer; | ||
| } | ||
| if (GetTemplateChild(NativeOverlayLayerHost) is WpfContentPresenter nativeOverlayLayerHost) | ||
| { | ||
| nativeOverlayLayerHost.Content = _nativeOverlayLayer; | ||
| } | ||
| if (GetTemplateChild(FlyoutLayerHost) is WpfContentPresenter flyoutLayerHost) | ||
| { | ||
| flyoutLayerHost.Content = _flyoutLayer; | ||
| } | ||
| } | ||
|
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| MUX.UIElement? IXamlRootHost.RootElement => _winUIWindow.RootElement; | ||
|
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| void IXamlRootHost.InvalidateRender() | ||
| { | ||
| _winUIWindow.RootElement?.XamlRoot?.InvalidateOverlays(); | ||
| _bottomLayer.InvalidateVisual(); | ||
| _flyoutLayer.InvalidateVisual(); | ||
| InvalidateVisual(); | ||
| } | ||
|
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| WpfCanvas IWpfXamlRootHost.NativeOverlayLayer => _nativeOverlayLayer; | ||
|
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| bool IWpfXamlRootHost.IgnorePixelScaling => WpfHost.Current?.IgnorePixelScaling ?? false; | ||
|
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| RenderSurfaceType? IWpfXamlRootHost.RenderSurfaceType => WpfHost.Current?.RenderSurfaceType ?? null; | ||
|
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| private class RenderingLayerHost(IWpfRenderer renderer) : WpfControl | ||
| { | ||
| public IWpfRenderer Renderer { get; } = renderer; | ||
|
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| protected override void OnRender(System.Windows.Media.DrawingContext drawingContext) | ||
| { | ||
| base.OnRender(drawingContext); | ||
| Renderer.Render(drawingContext); | ||
| } | ||
| } | ||
| } |
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