[Tizen] Fix material style slider issue (#12708)

Xamarin.Forms.Material.Tizen/MaterialSliderRenderer.cs

@@ -8,13 +8,22 @@ namespace Xamarin.Forms.Material.Tizen
 {
 	public class MaterialSliderRenderer : SliderRenderer
 	{
-		protected override void OnElementChanged(ElementChangedEventArgs<Slider> e)
+		protected override ElmSharp.Slider CreateNativeControl()
 		{
-			if (Control == null)
-			{
-				SetNativeControl(new MSlider(Forms.NativeParent));
-			}
-			base.OnElementChanged(e);
+			return new MSlider(Forms.NativeParent);
+		}
+
+		protected override void UpdateMinimumTrackColor()
+		{
+			var color = Element.MinimumTrackColor.IsDefault ? MColors.Current.PrimaryColor : Element.MinimumTrackColor.ToNative();
+			Control.SetPartColor(Parts.Slider.Bar, color);
+			Control.SetPartColor(Parts.Slider.BarPressed, color);
+		}
+
+		protected override void UpdateMaximumTrackColor()
+		{
+			var color = Element.MaximumTrackColor.IsDefault ? MColors.Current.PrimaryColor.WithAlpha(0.5) : Element.MaximumTrackColor.ToNative();
+			Control.SetPartColor(Parts.Widget.Background, color);
 		}
 
 		protected override void UpdateThumbColor()
@@ -22,6 +31,8 @@ namespace Xamarin.Forms.Material.Tizen
 			var color = Element.ThumbColor.IsDefault ? MColors.Current.PrimaryColor : Element.ThumbColor.ToNative();
 			Control.SetPartColor(Parts.Slider.Handler, color);
 			Control.SetPartColor(Parts.Slider.HandlerPressed, color);
+			Control.SetPartColor(Parts.Slider.Handler2, color.WithAlpha(0.32));
 		}
+
 	}
 }

Xamarin.Forms.Platform.Tizen/Renderers/SliderRenderer.cs

@@ -16,7 +16,7 @@ namespace Xamarin.Forms.Platform.Tizen
 		{
 			if (Control == null)
 			{
-				SetNativeControl(new ESlider(Forms.NativeParent));
+				SetNativeControl(CreateNativeControl());
 				Control.ValueChanged += OnValueChanged;
 				Control.DragStarted += OnDragStarted;
 				Control.DragStopped += OnDragStopped;
@@ -24,6 +24,7 @@ namespace Xamarin.Forms.Platform.Tizen
 				_defaultMaxColor = Control.GetBackgroundColor();
 				_defaultThumbColor = Control.GetHandlerColor();
 			}
+
 			UpdateMinimum();
 			UpdateMaximum();
 			UpdateValue();
@@ -31,6 +32,11 @@ namespace Xamarin.Forms.Platform.Tizen
 			base.OnElementChanged(e);
 		}
 
+		protected virtual ESlider CreateNativeControl()
+		{
+			return new ESlider(Forms.NativeParent);
+		}
+
 		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
 		{
 			if (e.PropertyName == Slider.MinimumProperty.PropertyName)
@@ -109,13 +115,13 @@ namespace Xamarin.Forms.Platform.Tizen
 			Control.Maximum = Element.Maximum;
 		}
 
-		protected void UpdateMinimumTrackColor()
+		protected virtual void UpdateMinimumTrackColor()
 		{
 			var color = Element.MinimumTrackColor.IsDefault ? _defaultMinColor : Element.MinimumTrackColor.ToNative();
 			Control.SetBarColor(color);
 		}
 
-		protected void UpdateMaximumTrackColor()
+		protected virtual void UpdateMaximumTrackColor()
 		{
 			Control.SetBackgroundColor(Element.MaximumTrackColor.IsDefault ? _defaultMaxColor : Element.MaximumTrackColor.ToNative());
 		}