Fix DisplayResolutionUnit sync issue (#134)

src/Compatibility/Core/src/AppHostBuilderExtensions.Tizen.cs

@@ -2,6 +2,7 @@
 using Microsoft.Maui.LifecycleEvents;
 using Microsoft.Maui.Controls.Compatibility;
 using Microsoft.Extensions.DependencyInjection;
+using TDeviceInfo = Tizen.UIExtensions.Common.DeviceInfo;
 
 namespace Microsoft.Maui.Controls.Hosting
 {
@@ -27,12 +28,13 @@ static void OnConfigureLifeCycle(ITizenLifecycleBuilder tizen)
 				{
 					options = new InitializationOptions(MauiApplication.Current)
 					{
-						DisplayResolutionUnit = DisplayResolutionUnit.DP()
+						DisplayResolutionUnit = TDeviceInfo.DisplayResolutionUnit.ToCompatibility(TDeviceInfo.ViewPortWidth)
 					};
 				}
 				else
 				{
 					options.Context = options.Context ?? MauiApplication.Current;
+					TDeviceInfo.DisplayResolutionUnit = options.DisplayResolutionUnit.ToDeviceInfo();
 				}
 				options.Flags |= InitializationFlags.SkipRenderers;
 				Forms.Init(state, options);

src/Compatibility/Core/src/Tizen/DisplayResolutionUnit.cs

@@ -1,4 +1,5 @@
 using System;
+using TDisplayResolutionUnit = Tizen.UIExtensions.Common.DisplayResolutionUnit;
 
 namespace Microsoft.Maui.Controls.Compatibility
 {
@@ -50,4 +51,34 @@ internal static DisplayResolutionUnit FromInit(bool useDP)
 
 		public double ViewportWidth { get; private set; } = -1;
 	}
+
+	public static class DisplayResolutionUnitConverter
+	{
+		public static DisplayResolutionUnit ToCompatibility(this TDisplayResolutionUnit unit, double width = 0) => unit switch
+		{
+			TDisplayResolutionUnit.DP => DisplayResolutionUnit.DP(),
+			TDisplayResolutionUnit.DeviceScaledDP => DisplayResolutionUnit.DP(true),
+			TDisplayResolutionUnit.Pixel => DisplayResolutionUnit.Pixel(),
+			TDisplayResolutionUnit.DeviceScaledPixel => DisplayResolutionUnit.Pixel(true),
+			TDisplayResolutionUnit.VP => DisplayResolutionUnit.VP(width),
+			_ => DisplayResolutionUnit.DP(),
+		};
+
+		public static TDisplayResolutionUnit ToDeviceInfo(this DisplayResolutionUnit unit)
+		{
+			if (unit.UseDP)
+			{
+				return unit.UseDeviceScale ? TDisplayResolutionUnit.DeviceScaledDP : TDisplayResolutionUnit.DP;
+			}
+			else if (unit.UseVP)
+			{
+				Tizen.UIExtensions.Common.DeviceInfo.ViewPortWidth = unit.ViewportWidth;
+				return TDisplayResolutionUnit.VP;
+			}
+			else
+			{
+				return unit.UseDeviceScale ? TDisplayResolutionUnit.DeviceScaledPixel : TDisplayResolutionUnit.Pixel;
+			}
+		}
+	}
 }

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

@@ -12,9 +12,6 @@ namespace Microsoft.Maui
 {
 	public class CoreUIAppContext
 	{
-		DisplayResolutionUnit _displayResolutionUnit = DisplayResolutionUnit.DP;
-		double _viewPortWidth = -1;
-
 		static CoreUIAppContext? _instance = null;
 
 		Func<bool>? _handleBackButtonPressed;
@@ -46,27 +43,6 @@ public static CoreUIAppContext GetInstance(CoreApplication application, Window?
 
 		public DeviceType DeviceType => DeviceInfo.GetDeviceType();
 
-		public DisplayResolutionUnit DisplayResolutionUnit
-		{
-			get => _displayResolutionUnit;
-			set
-			{
-				_displayResolutionUnit = value;
-				DeviceInfo.DisplayResolutionUnit = _displayResolutionUnit;
-			}
-		}
-
-		public double ViewportWidth
-		{
-			get => _viewPortWidth;
-			set
-			{
-				_viewPortWidth = value;
-				// TODO. DeviceInfo.ViewportWidth is readonly, fix it
-				//ViewportWidth = _viewPortWidth;
-			}
-		}
-
 		protected CoreUIAppContext(CoreApplication application) : this(application, CreateDefaultWindow())
 		{
 		}
@@ -76,9 +52,6 @@ protected CoreUIAppContext(CoreApplication application, Window window)
 			_ = application ?? throw new ArgumentNullException(nameof(application));
 			_ = window ?? throw new ArgumentNullException(nameof(window));
 
-			if (DisplayResolutionUnit == DisplayResolutionUnit.VP && ViewportWidth < 0)
-				throw new InvalidOperationException($"ViewportWidth should be set in case of DisplayResolutionUnit == VP");
-
 			Elementary.Initialize();
 			Elementary.ThemeOverlay();
 			CurrentApplication = application;