Implements WindowOverlay and VisualDiagnosticsOverlay (#294)

* Implements WindowOverlay and VisualDiagnosticsOverlay

* Apply code review

Author: myroot

src/Core/src/Handlers/Window/WindowHandler.Tizen.cs

@@ -14,6 +14,9 @@ public static void MapContent(WindowHandler handler, IWindow window)
 
 			var nativeContent = window.Content.ToContainerView(handler.MauiContext);
 			handler.MauiContext.Context.SetContent(nativeContent);
+
+			if (window.VisualDiagnosticsOverlay != null)
+				window.VisualDiagnosticsOverlay.Initialize();
 		}
 	}
 }

src/Core/src/Platform/Tizen/CoreUIAppContext.cs

@@ -87,6 +87,14 @@ public void SetContent(EvasObject content)
 			ModalStack.Push(content);
 		}
 
+		public void SetOverlay(EvasObject? content)
+		{
+			content?.SetAlignment(-1, -1);
+			content?.SetWeight(1, 1);
+			content?.Show();
+			MainWindow.AddResizeObject(content);
+		}
+
 		public void SetBackButtonPressedHandler(Func<bool> handler)
 		{
 			_handleBackButtonPressed = handler;
@@ -130,11 +138,6 @@ void InitializeMainWindow()
 					BaseCircleSurface = new CircleSurface(conformant);
 				}
 				conformant.SetContent(BaseLayout);
-
-				if (DeviceType == DeviceType.Watch)
-				{
-					BaseCircleSurface = new CircleSurface(conformant);
-				}
 			}
 
 			MainWindow.Active();

src/Core/src/Platform/Tizen/ViewExtensions.cs

@@ -163,11 +163,7 @@ internal static Rectangle GetNativeViewBounds(this EvasObject nativeView)
 			if (nativeView == null)
 				return new Rectangle();
 
-			return new Rectangle(
-				nativeView.Geometry.X,
-				nativeView.Geometry.Y,
-				nativeView.Geometry.Width,
-				nativeView.Geometry.Height);
+			return nativeView.Geometry.ToDP();
 		}
 
 		internal static Matrix4x4 GetViewTransform(this IView view)
@@ -179,7 +175,7 @@ internal static Matrix4x4 GetViewTransform(this IView view)
 		}
 
 		internal static Matrix4x4 GetViewTransform(this EvasObject nativeView)
-			=> nativeView.GetViewTransform();
+			=> new Matrix4x4();
 
 		internal static Graphics.Rectangle GetBoundingBox(this IView view)
 			=> view.GetNative(true).GetBoundingBox();
@@ -189,14 +185,7 @@ internal static Graphics.Rectangle GetBoundingBox(this EvasObject? nativeView)
 			if (nativeView == null)
 				return new Rectangle();
 
-			var rect = nativeView.Geometry;
-
-			var nvb = nativeView.GetNativeViewBounds();
-			var transform = nativeView.GetViewTransform();
-			var radians = transform.ExtractAngleInRadians();
-			//TODO: Need to impl
-
-			return new Rectangle(nvb.X, nvb.Y, nvb.Width, nvb.Height);
+			return nativeView.Geometry.ToDP();
 		}
 	}
 }

src/Core/src/VisualDiagnostics/VisualDiagnosticsOverlay.Tizen.cs

@@ -1,6 +1,5 @@
-using System.Collections.Generic;
-using Microsoft.Maui.Graphics;
-using Microsoft.Maui.Graphics.Skia.Views;
+using System;
+using System.Collections.Generic;
 using ElmSharp;
 
 namespace Microsoft.Maui
@@ -18,19 +17,39 @@ public void AddScrollableElementHandler(IScrollView scrollBar)
 			if (nativeScroll != null)
 			{
 				_scrollViews.Add(scrollBar, nativeScroll);
+				if (nativeScroll is Scroller scroller)
+				{
+					scroller.Scrolled += OnScrolled;
+				}
 			}
-			//TODO : Need to impl
+		}
+
+		public override void HandleUIChange()
+		{
+			base.HandleUIChange();
+
+			if (WindowElements.Count > 0)
+				RemoveAdorners();
+
+			Invalidate();
 		}
 
 		/// <inheritdoc/>
 		public void RemoveScrollableElementHandler()
 		{
 			foreach (var scroll in _scrollViews.Values)
 			{
-				//TODO : Need to impl
+				if (scroll is Scroller scroller)
+				{
+					scroller.Scrolled -= OnScrolled;
+				}
 			}
-
 			_scrollViews.Clear();
 		}
+
+		void OnScrolled(object? sender, EventArgs e)
+		{
+			Invalidate();
+		}
 	}
 }

src/Core/src/WindowOverlay/WindowOverlay.Tizen.cs

@@ -1,15 +1,13 @@
-using System.Linq;
-using Microsoft.Maui.Graphics;
+using ElmSharp;
 using Microsoft.Maui.Graphics.Skia.Views;
-using Microsoft.Maui.Handlers;
-using ElmSharp;
 using Point = Microsoft.Maui.Graphics.Point;
 
 namespace Microsoft.Maui
 {
 	public partial class WindowOverlay
 	{
 		SkiaGraphicsView? _graphicsView;
+		GestureLayer? _touchLayer;
 
 		public virtual bool Initialize()
 		{
@@ -19,16 +17,30 @@ public virtual bool Initialize()
 			if (Window == null)
 				return false;
 
-			var nativeWindow = Window?.Content?.GetNative(true);
+			var nativeWindow = Window.Content?.GetNative(true);
 			if (nativeWindow == null)
 				return false;
 
-			var handler = Window?.Handler as WindowHandler;
+			var handler = Window.Handler as WindowHandler;
 			if (handler?.MauiContext == null)
 				return false;
 
-			//TODO: Need to impl
-			return false;
+			_graphicsView = new SkiaGraphicsView(handler.MauiContext.Context!.BaseLayout);
+			_graphicsView.Drawable = this;
+			_graphicsView.RepeatEvents = !DisableUITouchEventPassthrough;
+
+			_touchLayer = new GestureLayer(handler.MauiContext.Context!.BaseLayout);
+			_touchLayer.Attach(_graphicsView);
+			_touchLayer.SetTapCallback(GestureLayer.GestureType.Tap, GestureLayer.GestureState.Start, (data) =>
+			{
+				var x = _touchLayer.EvasCanvas.Pointer.X;
+				var y = _touchLayer.EvasCanvas.Pointer.Y;
+				OnTappedInternal(new Point(DPExtensions.ConvertToScaledDP(x), DPExtensions.ConvertToScaledDP(y)));
+			});
+
+			handler.MauiContext.Context.SetOverlay(_graphicsView);
+			IsNativeViewInitialized = true;
+			return IsNativeViewInitialized;
 		}
 
 		public void Invalidate()
@@ -38,10 +50,28 @@ public void Invalidate()
 
 		void DeinitializeNativeDependencies()
 		{
-			//TODO: Need to impl
+			if (Window == null)
+				return;
+
+			var nativeWindow = Window?.Content?.GetNative(true);
+			if (nativeWindow == null)
+				return;
+
+			var handler = Window?.Handler as WindowHandler;
+			if (handler?.MauiContext == null)
+				return;
 
+			_graphicsView?.Unrealize();
 			_graphicsView = null;
 			IsNativeViewInitialized = false;
 		}
+
+		partial void OnDisableUITouchEventPassthroughSet()
+		{
+			if (_graphicsView != null)
+			{
+				_graphicsView.RepeatEvents = !DisableUITouchEventPassthrough;
+			}
+		}
 	}
 }