[mac] Drop margins from some color layers for more consistency

Author: Eric Maupin

Xamarin.PropertyEditing.Mac/Controls/Custom/HistoryLayer.cs

@@ -7,7 +7,6 @@ namespace Xamarin.PropertyEditing.Mac
 {
 	internal class HistoryLayer : ColorEditorLayer
 	{
-		private const float Margin = 3;
 		private const float BorderRadius = 3;
 
 		public HistoryLayer (IHostResourceProvider hostResources)
@@ -54,13 +53,13 @@ public override void LayoutSublayers ()
 				Bounds.Right - Bounds.Height,
 				0,
 				Bounds.Height,
-				Bounds.Height).Inset (Margin, Margin);
+				Bounds.Height);
 
 			this.clip.Frame = new CGRect (
 				0,
 				0,
-				Bounds.Width - Bounds.Height + Margin,
-				Bounds.Height).Inset (Margin, Margin);
+				Bounds.Width - Bounds.Height - 3,
+				Bounds.Height);
 
 			NSColor cc0 = this.hostResources.GetNamedColor (NamedResources.Checkerboard0Color);
 			NSColor cc1 = this.hostResources.GetNamedColor (NamedResources.Checkerboard1Color);

Xamarin.PropertyEditing.Mac/Controls/Custom/HueLayer.cs

@@ -86,7 +86,7 @@ public override void Commit (EditorInteraction interaction)
 		public override void LayoutSublayers ()
 		{
 			base.LayoutSublayers ();
-			this.colors.Frame = Bounds.Inset (2, 2);
+			this.colors.Frame = Bounds;
 			this.grip.Frame = new CGRect (
 				this.grip.Frame.X,
 				this.grip.Frame.Y,

Xamarin.PropertyEditing.Mac/Controls/Custom/ShadeLayer.cs

@@ -1,17 +1,14 @@
 using System;
-using System.Linq;
 using AppKit;
 using CoreAnimation;
 using CoreGraphics;
-using Xamarin.PropertyEditing.Drawing;
 
 namespace Xamarin.PropertyEditing.Mac
 {
 	class ShadeLayer : ColorEditorLayer
 	{
 		private const float GripRadius = 4;
 		private const float BorderRadius = 3;
-		private const float Margin = 3;
 		private readonly ChannelEditor saturationEditor = new HsbSaturationChannelEditor ();
 		private readonly ChannelEditor brightnessEditor = new HsbBrightnessChannelEditor ();
 
@@ -68,7 +65,7 @@ public override void LayoutSublayers ()
 		{
 			base.LayoutSublayers ();
 
-			this.saturationLayer.Frame = Bounds.Inset (Margin, Margin);
+			this.saturationLayer.Frame = Bounds;
 			this.brightnessLayer.Frame = this.saturationLayer.Bounds;
 			this.saturationLayer.StartPoint = new CGPoint (0, .5);
 			this.saturationLayer.EndPoint = new CGPoint (1, .5);