Add an extensions for SKColorF (#1469)

scripts/azure-pipelines.yml

@@ -23,7 +23,7 @@ variables:
   MONO_VERSION_MACOS: 6_8_0
   MONO_VERSION_LINUX: stable-bionic/snapshots/6.8.0.123
   XCODE_VERSION: 11.3.1
-  DOTNET_VERSION: 3.1.x
+  DOTNET_VERSION: 3.1.302
   CONFIGURATION: 'Release'
   VM_IMAGE_WINDOWS: windows-2019
   VM_IMAGE_WINDOWS_PREVIOUS: vs2017-win2016

source/SkiaSharp.Views.Forms/SkiaSharp.Views.Forms.Shared/Extensions.cs

@@ -55,14 +55,16 @@ namespace SkiaSharp.Views.Forms
 
 		// Xamarin.Forms.Color
 
-		public static Color ToFormsColor(this SKColor color)
-		{
-			return new Color(color.Red / 255.0, color.Green / 255.0, color.Blue / 255.0, color.Alpha / 255.0);
-		}
+		public static Color ToFormsColor(this SKColor color) =>
+			new Color(color.Red / 255.0, color.Green / 255.0, color.Blue / 255.0, color.Alpha / 255.0);
 
-		public static SKColor ToSKColor(this Color color)
-		{
-			return new SKColor((byte)(color.R * 255), (byte)(color.G * 255), (byte)(color.B * 255), (byte)(color.A * 255));
-		}
+		public static Color ToFormsColor(this SKColorF color) =>
+			new Color(color.Red, color.Green, color.Blue, color.Alpha);
+
+		public static SKColor ToSKColor(this Color color) =>
+			new SKColor((byte)(color.R * 255), (byte)(color.G * 255), (byte)(color.B * 255), (byte)(color.A * 255));
+
+		public static SKColorF ToSKColorF(this Color color) =>
+			new SKColorF((float)color.R, (float)color.G, (float)color.B, (float)color.A);
 	}
 }

source/SkiaSharp.Views/SkiaSharp.Views.Apple/AppleExtensions.cs

@@ -62,10 +62,11 @@ namespace SkiaSharp.Views.Mac
 
 		// CGColor
 
-		public static SKColor ToSKColor(this CGColor color)
-		{
-			return UIColor.FromCGColor(color).ToSKColor();
-		}
+		public static SKColor ToSKColor(this CGColor color) =>
+			UIColor.FromCGColor(color).ToSKColor();
+
+		public static SKColorF ToSKColorF(this CGColor color) =>
+			UIColor.FromCGColor(color).ToSKColorF();
 
 		public static CGColor ToCGColor(this SKColor color)
 		{
@@ -77,19 +78,31 @@ namespace SkiaSharp.Views.Mac
 #endif
 		}
 
+		public static CGColor ToCGColor(this SKColorF color)
+		{
+#if __TVOS__ || __WATCHOS__ || __IOS__
+			// see https://bugzilla.xamarin.com/show_bug.cgi?id=44507
+			return UIColor.FromRGBA(color.Red, color.Green, color.Blue, color.Alpha).CGColor;
+#else
+			return UIColor.FromRgba(color.Red, color.Green, color.Blue, color.Alpha).CGColor;
+#endif
+		}
+
 		// CIColor
 
 #if !__WATCHOS__
 
-		public static SKColor ToSKColor(this CIColor color)
-		{
-			return UIColor.FromCIColor(color).ToSKColor();
-		}
+		public static SKColor ToSKColor(this CIColor color) =>
+			UIColor.FromCIColor(color).ToSKColor();
 
-		public static CIColor ToCIColor(this SKColor color)
-		{
-			return new CIColor(color.Red / 255f, color.Green / 255f, color.Blue / 255f, color.Alpha / 255f);
-		}
+		public static SKColorF ToSKColorF(this CIColor color) =>
+			UIColor.FromCIColor(color).ToSKColorF();
+
+		public static CIColor ToCIColor(this SKColor color) =>
+			new CIColor(color.Red / 255f, color.Green / 255f, color.Blue / 255f, color.Alpha / 255f);
+
+		public static CIColor ToCIColor(this SKColorF color) =>
+			new CIColor(color.Red, color.Green, color.Blue, color.Alpha);
 
 #endif
 

source/SkiaSharp.Views/SkiaSharp.Views.AppleiOS/iOSExtensions.cs

@@ -20,11 +20,19 @@ namespace SkiaSharp.Views.iOS
 			return new SKColor((byte)(r * 255), (byte)(g * 255), (byte)(b * 255), (byte)(a * 255));
 		}
 
-		public static UIColor ToUIColor(this SKColor color)
+		public static SKColorF ToSKColorF(this UIColor color)
 		{
-			return UIColor.FromRGBA(color.Red, color.Green, color.Blue, color.Alpha);
+			System.nfloat r, g, b, a;
+			color.GetRGBA(out r, out g, out b, out a);
+			return new SKColorF((float)r, (float)g, (float)b, (float)a);
 		}
 
+		public static UIColor ToUIColor(this SKColor color) =>
+			UIColor.FromRGBA(color.Red, color.Green, color.Blue, color.Alpha);
+
+		public static UIColor ToUIColor(this SKColorF color) =>
+			UIColor.FromRGBA(color.Red, color.Green, color.Blue, color.Alpha);
+
 		// UIImage
 
 		public static SKImage ToSKImage(this UIImage uiImage)

source/SkiaSharp.Views/SkiaSharp.Views.Mac/MacExtensions.cs

@@ -14,11 +14,19 @@ namespace SkiaSharp.Views.Mac
 			return new SKColor((byte)(r * 255), (byte)(g * 255), (byte)(b * 255), (byte)(a * 255));
 		}
 
-		public static NSColor ToNSColor(this SKColor color)
+		public static SKColorF ToSKColorF(this NSColor color)
 		{
-			return NSColor.FromRgba(color.Red, color.Green, color.Blue, color.Alpha);
+			System.nfloat r, g, b, a;
+			color.GetRgba(out r, out g, out b, out a);
+			return new SKColorF((float)r, (float)g, (float)b, (float)a);
 		}
 
+		public static NSColor ToNSColor(this SKColor color) =>
+			NSColor.FromRgba(color.Red, color.Green, color.Blue, color.Alpha);
+
+		public static NSColor ToNSColor(this SKColorF color) =>
+			NSColor.FromRgba(color.Red, color.Green, color.Blue, color.Alpha);
+
 
 		// NSImage