.gitignore

@@ -5,54 +5,6 @@
 /.buckconfig.local
 /.buckd
 /gentest/test.html
-.buckversion
 
 # Visual studio code
 .vscode
-*.pdb
-*.tlog
-*.obj
-*.pch
-*.log
-*.orig
-
-# Xcode
-## Build generated
-build/
-DerivedData/
-
-## Various settings
-*.pbxuser
-!default.pbxuser
-*.mode1v3
-!default.mode1v3
-*.mode2v3
-!default.mode2v3
-*.perspectivev3
-!default.perspectivev3
-xcuserdata/
-
-## Other
-*.moved-aside
-*.xcuserstate
-
-## Obj-C/Swift specific
-*.hmap
-*.ipa
-*.dSYM.zip
-*.dSYM
-
-# CocoaPods
-#
-# We recommend against adding the Pods directory to your .gitignore. However
-# you should judge for yourself, the pros and cons are mentioned at:
-# https://guides.cocoapods.org/using/using-cocoapods.html#should-i-check-the-pods-directory-into-source-control
-#
-Pods/
-
-# Carthage
-#
-# Add this line if you want to avoid checking in source code from Carthage dependencies.
-# Carthage/Checkouts
-
-Carthage/Build

csharp/.gitignore

@@ -267,3 +267,5 @@ paket-files/
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
 *.pyc
+
+libyoga.a

csharp/Facebook.Yoga/Native.cs

@@ -89,8 +89,10 @@ namespace Facebook.Yoga
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         public static extern void YGNodePrint(YGNodeHandle node, YogaPrintOptions options);
 
+#if !__IOS__
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]
         [return: MarshalAs(UnmanagedType.I1)]
+#endif
         public static extern bool YGValueIsUndefined(float value);
 
         [DllImport(DllName, ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)]

csharp/Facebook.YogaKit/Facebook.YogaKit.Shared.shproj

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <ProjectGuid>{A24B3BA6-3143-4FFF-B8B8-1EDF166F5F4A}</ProjectGuid>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.Default.props" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.Common.props" />
+  <Import Project="Facebook.YogaKit.projitems" Label="Shared" />
+  <Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\CodeSharing\Microsoft.CodeSharing.CSharp.targets" />
+</Project>

csharp/Facebook.YogaKit/Facebook.YogaKit.projitems

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <MSBuildAllProjects>$(MSBuildAllProjects);$(MSBuildThisFileFullPath)</MSBuildAllProjects>
+    <HasSharedItems>true</HasSharedItems>
+    <SharedGUID>{A24B3BA6-3143-4FFF-B8B8-1EDF166F5F4A}</SharedGUID>
+  </PropertyGroup>
+  <PropertyGroup Label="Configuration">
+    <Import_RootNamespace>Facebook.YogaKit</Import_RootNamespace>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="$(MSBuildThisFileDirectory)YogaKit.cs" />
+    <Compile Include="$(MSBuildThisFileDirectory)YogaKitNative.cs" />
+  </ItemGroup>
+</Project>

csharp/Facebook.YogaKit/YogaKit.cs

@@ -0,0 +1,180 @@
+using System;
+using System.Collections.Generic;
+using Facebook.Yoga;
+#if __IOS__
+using NativeView = UIKit.UIView;
+#endif
+
+namespace Facebook.YogaKit
+{
+	public static class YogaKit
+	{
+		internal static Dictionary<YogaNode, object> Bridges = new Dictionary<YogaNode, object>();
+
+		public static void UsesYoga(this NativeView view, bool usesYoga)
+		{
+			YogaKitNative.UsesYoga(view, usesYoga);
+		}
+
+		public static bool GetUsesYoga(this NativeView view)
+		{
+			return YogaKitNative.GetUsesYoga(view);
+		}
+
+		public static void IncludeYogaLayout(this NativeView view, bool includeInLayout)
+		{
+			YogaKitNative.IncludeYogaLayout(view, includeInLayout);
+		}
+
+		public static bool GetIncludeYogaLayout(this NativeView view)
+		{
+			return YogaKitNative.GetIncludeYogaLayout(view);
+		}
+
+		public static void YogaWidth(this NativeView view, nfloat width)
+		{
+			var node = GetYogaNode(view);
+			node.Width = (float)width;
+		}
+
+		public static void YogaHeight(this NativeView view, nfloat height)
+		{
+			var node = GetYogaNode(view);
+			node.Height = (float)height;
+		}
+
+		public static void YogaMinWidth(this NativeView view, float minWidth)
+		{
+			var node = GetYogaNode(view);
+			node.MinWidth = minWidth;
+		}
+
+		public static void YogaMinHeight(this NativeView view, float minHeight)
+		{
+			var node = GetYogaNode(view);
+			node.MinHeight = minHeight;
+		}
+
+		public static void YogaMaxWidth(this NativeView view, float maxWidth)
+		{
+			var node = GetYogaNode(view);
+			node.MaxWidth = maxWidth;
+		}
+
+		public static void YogaMaxHeight(this NativeView view, float maxHeight)
+		{
+			var node = GetYogaNode(view);
+			node.MaxHeight = maxHeight;
+		}
+
+		public static void YogaAlignItems(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignItems = align;
+		}
+
+		public static void YogaJustify(this NativeView view, YogaJustify justify)
+		{
+			var node = GetYogaNode(view);
+			node.JustifyContent = justify;
+		}
+
+		public static void YogaAlign(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignContent = align;
+		}
+
+		public static void YogaAlignSelf(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignSelf = align;
+		}
+
+		public static void YogaDirection(this NativeView view, YogaDirection direction)
+		{
+			var node = GetYogaNode(view);
+			node.StyleDirection = direction;
+		}
+
+		public static void YogaFlexDirection(this NativeView view, YogaFlexDirection direction)
+		{
+			var node = GetYogaNode(view);
+			node.FlexDirection = direction;
+		}
+
+		public static void YogaPositionType(this NativeView view, YogaPositionType position)
+		{
+			var node = GetYogaNode(view);
+			node.PositionType = position;
+		}
+
+		public static void YogaFlexWrap(this NativeView view, YogaWrap wrap)
+		{
+			var node = GetYogaNode(view);
+			node.Wrap = wrap;
+		}
+
+		public static void YogaFlexShrink(this NativeView view, float shrink)
+		{
+			var node = GetYogaNode(view);
+			node.FlexShrink = shrink;
+		}
+
+		public static void YogaFlexGrow(this NativeView view, float grow)
+		{
+			var node = GetYogaNode(view);
+			node.FlexGrow = grow;
+		}
+
+		public static void YogaFlexBasis(this NativeView view, float basis)
+		{
+			var node = GetYogaNode(view);
+			node.FlexBasis = basis;
+		}
+
+		public static void YogaPositionForEdge(this NativeView view, float position, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetPosition(edge, position);
+		}
+
+		public static void YogaMarginForEdge(this NativeView view, float margin, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetMargin(edge, margin);
+		}
+
+		public static void YogaPaddingForEdge(this NativeView view, float padding, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetPadding(edge, padding);
+		}
+
+		public static void YogaAspectRation(this NativeView view, float ratio)
+		{
+			var node = GetYogaNode(view);
+			node.StyleAspectRatio = ratio;
+		}
+
+		#region Layout and Sizing
+		public static void YogaApplyLayout(this NativeView view)
+		{
+			YogaKitNative.CalculateLayoutWithSize(view, view.Bounds.Size);
+			YogaKitNative.ApplyLayoutToViewHierarchy(view);
+		}
+
+		public static YogaDirection YogaResolvedDirection(this NativeView view)
+		{
+			var node = GetYogaNode(view);
+			return node.LayoutDirection;
+		}
+
+		#endregion
+
+		public static YogaNode GetYogaNode(this NativeView view)
+		{
+			return YogaKitNative.GetYogaNode(view);
+		}
+	}
+}

csharp/Facebook.YogaKit/YogaKitNative.cs

@@ -0,0 +1,255 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using Facebook.Yoga;
+#if __IOS__
+using CoreGraphics;
+using Foundation;
+using UIKit;
+#endif
+
+namespace Facebook.YogaKit
+{
+	internal static class YogaKitNative
+	{
+		static NSString YogaNodeKey = new NSString("YogaNode");
+
+		static NSString UsesYogaKey = new NSString("UsesYoga");
+
+		static NSString IncludeYogaKey = new NSString("UsesYoga");
+
+		public static void UsesYoga(UIView view, bool usesYoga)
+		{
+			var value = NSNumber.FromBoolean(usesYoga);
+			objc_setAssociatedObject(view.Handle, UsesYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+		}
+
+		public static bool GetUsesYoga(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, UsesYogaKey.Handle)) as NSNumber;
+			return value == null ? false : value.BoolValue;
+		}
+
+		public static void IncludeYogaLayout(UIView view, bool includeInLayout)
+		{
+			var value = NSNumber.FromBoolean(includeInLayout);
+			objc_setAssociatedObject(view.Handle, IncludeYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+		}
+
+		public static bool GetIncludeYogaLayout(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, IncludeYogaKey.Handle)) as NSNumber;
+			return value == null ? true : value.BoolValue;
+		}
+
+		public static YogaNode GetYogaNode(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, YogaNodeKey.Handle)) as YGNodeBridge;
+			if (value == null)
+			{
+				value = new YGNodeBridge();
+				value.SetContext(view);
+				objc_setAssociatedObject(view.Handle, YogaNodeKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+			}
+			return value.node;
+		}
+
+		public static CGSize CalculateLayoutWithSize(UIView view, CGSize size)
+		{
+			if (!view.GetUsesYoga())
+			{
+				System.Diagnostics.Debug.WriteLine("Doesn't use Yoga");
+			}
+			AttachNodesFromViewHierachy(view);
+			var node = GetYogaNode(view);
+
+			node.Width = (float)size.Width;
+			node.Height = (float)size.Height;
+			node.CalculateLayout();
+
+			return new CGSize { Width = node.LayoutWidth, Height = node.LayoutHeight };
+		}
+
+		public static void ApplyLayoutToViewHierarchy(UIView view)
+		{
+			if (!view.GetIncludeYogaLayout())
+				return;
+
+			var node = GetYogaNode(view);
+			CGPoint topLeft = new CGPoint(node.LayoutX, node.LayoutY);
+			CGPoint bottomRight = new CGPoint(topLeft.X + node.LayoutWidth, topLeft.Y + node.LayoutHeight);
+			view.Frame = new CGRect(RoundPixelValue(topLeft.X), RoundPixelValue(topLeft.Y), RoundPixelValue(bottomRight.X) - RoundPixelValue(topLeft.X), RoundPixelValue(bottomRight.Y) - RoundPixelValue(topLeft.Y));
+			bool isLeaf = !view.GetUsesYoga() || view.Subviews.Length == 0;
+			if (!isLeaf)
+			{
+				for (int i = 0; i < view.Subviews.Length; i++)
+				{
+					ApplyLayoutToViewHierarchy(view.Subviews[i]);
+				}
+			}
+		}
+
+		public static CGSize YogaIntrinsicSize(this UIView view)
+		{
+			var constrainedSize = new CGSize
+			{
+				Width = float.NaN,
+				Height = float.NaN
+			};
+			return CalculateLayoutWithSize(view, constrainedSize);
+		}
+
+		static YogaSize MeasureView(YogaNode node, float width, YogaMeasureMode widthMode, float height, YogaMeasureMode heightMode)
+		{
+			var constrainedWidth = (widthMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : width;
+			var constrainedHeight = (heightMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : height;
+
+			UIView view = null;
+			if (YogaKit.Bridges.ContainsKey(node))
+				(YogaKit.Bridges[node] as YGNodeBridge).viewRef.TryGetTarget(out view);
+
+			var sizeThatFits = view.SizeThatFits(new CGSize(constrainedWidth, constrainedHeight));
+
+			var finalWidth = SanitizeMeasurement(constrainedWidth, sizeThatFits.Width, widthMode);
+			var finalHeight = SanitizeMeasurement(constrainedHeight, sizeThatFits.Height, heightMode);
+
+			return MeasureOutput.Make(finalWidth, finalHeight);
+		}
+
+		static float SanitizeMeasurement(nfloat constrainedSize, nfloat measuredSize, YogaMeasureMode measureMode)
+		{
+			float result;
+			if (measureMode == YogaMeasureMode.Exactly)
+			{
+				result = (float)constrainedSize;
+			}
+			else if (measureMode == YogaMeasureMode.AtMost)
+			{
+				result = (float)Math.Min(constrainedSize, measuredSize);
+			}
+			else {
+				result = (float)measuredSize;
+			}
+
+			return result;
+
+		}
+
+		static double RoundPixelValue(nfloat value)
+		{
+			nfloat scale = UIScreen.MainScreen.Scale;
+
+			return Math.Round(value * scale) / scale;
+		}
+
+		static void AttachNodesFromViewHierachy(UIView view)
+		{
+			var node = GetYogaNode(view);
+
+			// Only leaf nodes should have a measure function
+			if (!view.GetUsesYoga() || view.Subviews.Length == 0)
+			{
+				node.SetMeasureFunction(MeasureView);
+				RemoveAllChildren(node);
+			}
+			else
+			{
+				node.SetMeasureFunction(null);
+				// Create a list of all the subviews that we are going to use for layout.
+				var subviewsToInclude = new List<UIView>();
+				foreach (var subview in view.Subviews)
+				{
+					if (subview.GetIncludeYogaLayout())
+					{
+						subviewsToInclude.Add(subview);
+					}
+				}
+
+				var shouldReconstructChildList = false;
+				if (node.Count != subviewsToInclude.Count)
+				{
+					shouldReconstructChildList = true;
+				}
+				else
+				{
+					for (int i = 0; i < subviewsToInclude.Count; i++)
+					{
+						if (node[i] != GetYogaNode(subviewsToInclude[i]))
+						{
+							shouldReconstructChildList = true;
+							break;
+						}
+					}
+				}
+
+				if (shouldReconstructChildList)
+				{
+					RemoveAllChildren(node);
+
+					for (int i = 0; i < subviewsToInclude.Count; i++)
+					{
+						var subView = subviewsToInclude[i];
+						node.Insert(i, subView.GetYogaNode());
+						AttachNodesFromViewHierachy(subView);
+					}
+				}
+			}
+		}
+
+		static void RemoveAllChildren(YogaNode node)
+		{
+			if (node == null)
+				return;
+
+			while (node.Count > 0)
+			{
+				node.Clear();
+			}
+		}
+
+
+		[DllImport("/usr/lib/libobjc.dylib")]
+		static extern void objc_setAssociatedObject(IntPtr @object, IntPtr key, IntPtr value, AssociationPolicy policy);
+
+		[DllImport("/usr/lib/libobjc.dylib")]
+		static extern IntPtr objc_getAssociatedObject(IntPtr @object, IntPtr key);
+
+		enum AssociationPolicy
+		{
+			ASSIGN = 0,
+			RETAIN_NONATOMIC = 1,
+			COPY_NONATOMIC = 3,
+			RETAIN = 01401,
+			COPY = 01403,
+		}
+	}
+
+	class YGNodeBridge : NSObject
+	{
+		bool disposed;
+		internal WeakReference<UIView> viewRef;
+		internal YogaNode node;
+		public YGNodeBridge()
+		{
+			node = new YogaNode();
+		}
+
+		public void SetContext(UIView view)
+		{
+			viewRef = new WeakReference<UIView>(view);
+			YogaKit.Bridges.Add(node, this);
+		}
+
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && !disposed)
+			{
+				disposed = true;
+				YogaKit.Bridges.Remove(node);
+				viewRef = null;
+				node = null;
+			}
+			base.Dispose(disposing);
+		}
+	}
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/AppDelegate.cs

@@ -0,0 +1,59 @@
+using Foundation;
+using UIKit;
+
+namespace Facebook.Yoga.iOS.Test
+{
+    // The UIApplicationDelegate for the application. This class is responsible for launching the
+    // User Interface of the application, as well as listening (and optionally responding) to application events from iOS.
+    [Register("AppDelegate")]
+    public class AppDelegate : UIApplicationDelegate
+    {
+        // class-level declarations
+
+        public override UIWindow Window
+        {
+            get;
+            set;
+        }
+
+        public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
+        {
+            // Override point for customization after application launch.
+            // If not required for your application you can safely delete this method
+
+            return true;
+        }
+
+        public override void OnResignActivation(UIApplication application)
+        {
+            // Invoked when the application is about to move from active to inactive state.
+            // This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) 
+            // or when the user quits the application and it begins the transition to the background state.
+            // Games should use this method to pause the game.
+        }
+
+        public override void DidEnterBackground(UIApplication application)
+        {
+            // Use this method to release shared resources, save user data, invalidate timers and store the application state.
+            // If your application supports background exection this method is called instead of WillTerminate when the user quits.
+        }
+
+        public override void WillEnterForeground(UIApplication application)
+        {
+            // Called as part of the transiton from background to active state.
+            // Here you can undo many of the changes made on entering the background.
+        }
+
+        public override void OnActivated(UIApplication application)
+        {
+            // Restart any tasks that were paused (or not yet started) while the application was inactive. 
+            // If the application was previously in the background, optionally refresh the user interface.
+        }
+
+        public override void WillTerminate(UIApplication application)
+        {
+            // Called when the application is about to terminate. Save data, if needed. See also DidEnterBackground.
+        }
+    }
+}
+

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,157 @@
+{
+  "images": [
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "1x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "3x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "40x40",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "40x40",
+      "scale": "3x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "57x57",
+      "scale": "1x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "57x57",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "60x60",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "60x60",
+      "scale": "3x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "29x29",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "29x29",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "40x40",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "40x40",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "50x50",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "50x50",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "72x72",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "72x72",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "76x76",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "76x76",
+      "scale": "2x"
+    },
+    {
+      "size": "24x24",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "notificationCenter",
+      "subtype": "38mm"
+    },
+    {
+      "size": "27.5x27.5",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "notificationCenter",
+      "subtype": "42mm"
+    },
+    {
+      "size": "29x29",
+      "idiom": "watch",
+      "role": "companionSettings",
+      "scale": "2x"
+    },
+    {
+      "size": "29x29",
+      "idiom": "watch",
+      "role": "companionSettings",
+      "scale": "3x"
+    },
+    {
+      "size": "40x40",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "appLauncher",
+      "subtype": "38mm"
+    },
+    {
+      "size": "44x44",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "longLook",
+      "subtype": "42mm"
+    },
+    {
+      "size": "86x86",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "quickLook",
+      "subtype": "38mm"
+    },
+    {
+      "size": "98x98",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "quickLook",
+      "subtype": "42mm"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Entitlements.plist

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+</dict>
+</plist>

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Facebook.Yoga.iOS.Test.csproj

@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">iPhoneSimulator</Platform>
+    <ProjectGuid>{3B27656A-129D-4779-BDAD-1A088DFDD9C5}</ProjectGuid>
+    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>Facebook.Yoga.iOS.Test</RootNamespace>
+    <AssemblyName>Facebook.Yoga.iOS.Test</AssemblyName>
+    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhoneSimulator' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
+    <DefineConstants>DEBUG;ENABLE_TEST_CLOUD;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchDebug>true</MtouchDebug>
+    <MtouchFastDev>true</MtouchFastDev>
+    <MtouchProfiling>true</MtouchProfiling>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <IOSDebuggerPort>22979</IOSDebuggerPort>
+    <MtouchLink>None</MtouchLink>
+    <MtouchArch>x86_64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+    <DeviceSpecificBuild>false</DeviceSpecificBuild>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhone\Release</OutputPath>
+    <DefineConstants></DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchFloat32>true</MtouchFloat32>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchArch>ARMv7, ARM64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhoneSimulator' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
+    <DefineConstants></DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchLink>None</MtouchLink>
+    <MtouchArch>x86_64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhone' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhone\Debug</OutputPath>
+    <DefineConstants>DEBUG;ENABLE_TEST_CLOUD;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <DeviceSpecificBuild>true</DeviceSpecificBuild>
+    <MtouchDebug>true</MtouchDebug>
+    <MtouchFastDev>true</MtouchFastDev>
+    <MtouchProfiling>true</MtouchProfiling>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchFloat32>true</MtouchFloat32>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchArch>ARMv7, ARM64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.iOS" />
+  </ItemGroup>
+  <ItemGroup>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json" />
+    <ImageAsset Include="Assets.xcassets\Contents.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Resources\" />
+  </ItemGroup>
+  <ItemGroup>
+    <InterfaceDefinition Include="LaunchScreen.storyboard" />
+    <InterfaceDefinition Include="Main.storyboard" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Info.plist" />
+    <None Include="Entitlements.plist" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Main.cs" />
+    <Compile Include="AppDelegate.cs" />
+    <Compile Include="ViewController.cs" />
+    <Compile Include="ViewController.designer.cs">
+      <DependentUpon>ViewController.cs</DependentUpon>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Facebook.YogaKit.iOS\Facebook.YogaKit.iOS.csproj">
+      <Project>{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}</Project>
+      <Name>Facebook.YogaKit.iOS</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\Facebook.Yoga.iOS\Facebook.Yoga.iOS.csproj">
+      <Project>{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}</Project>
+      <Name>Facebook.Yoga.iOS</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
+</Project>

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Info.plist

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleName</key>
+    <string>Facebook.Yoga.iOS.Test</string>
+    <key>CFBundleIdentifier</key>
+    <string>com.xamarin.facebook-yoga-ios-test</string>
+    <key>CFBundleShortVersionString</key>
+    <string>1.0</string>
+    <key>CFBundleVersion</key>
+    <string>1.0</string>
+    <key>LSRequiresIPhoneOS</key>
+    <true/>
+    <key>MinimumOSVersion</key>
+    <string>10.1</string>
+    <key>UIDeviceFamily</key>
+    <array>
+        <integer>1</integer>
+        <integer>2</integer>
+    </array>
+    <key>UILaunchStoryboardName</key>
+    <string>LaunchScreen</string>
+    <key>UIMainStoryboardFile</key>
+    <string>Main</string>
+    <key>UIRequiredDeviceCapabilities</key>
+    <array>
+        <string>armv7</string>
+    </array>
+    <key>UISupportedInterfaceOrientations</key>
+    <array>
+        <string>UIInterfaceOrientationPortrait</string>
+        <string>UIInterfaceOrientationLandscapeLeft</string>
+        <string>UIInterfaceOrientationLandscapeRight</string>
+    </array>
+    <key>XSAppIconAssets</key>
+    <string>Assets.xcassets/AppIcon.appiconset</string>
+</dict>
+</plist>

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/LaunchScreen.storyboard

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9532" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS" />
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9530" />
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb" />
+                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok" />
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600" />
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES" />
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite" />
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder" />
+            </objects>
+            <point key="canvasLocation" x="53" y="375" />
+        </scene>
+    </scenes>
+</document>

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Main.cs

@@ -0,0 +1,15 @@
+using UIKit;
+
+namespace Facebook.Yoga.iOS.Test
+{
+    public class Application
+    {
+        // This is the main entry point of the application.
+        static void Main(string[] args)
+        {
+            // if you want to use a different Application Delegate class from "AppDelegate"
+            // you can specify it here.
+            UIApplication.Main(args, null, "AppDelegate");
+        }
+    }
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/Main.storyboard

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204" />
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="ViewController" customModuleProvider="" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ" />
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE" />
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600" />
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES" />
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite" />
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder" />
+            </objects>
+        </scene>
+    </scenes>
+</document>

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/ViewController.cs

@@ -0,0 +1,63 @@
+using System;
+using CoreGraphics;
+using Facebook.YogaKit.iOS;
+using Foundation;
+using UIKit;
+
+namespace Facebook.Yoga.iOS.Test
+{
+
+	public partial class ViewController : UIViewController
+	{
+		protected ViewController(IntPtr handle) : base(handle)
+		{
+			// Note: this .ctor should not contain any initialization logic.
+		}
+
+		public override void ViewDidLoad()
+		{
+			base.ViewDidLoad();
+
+			CreateViewHierarchy(View, View.Bounds.Size.Width, View.Bounds.Size.Height);
+		}
+
+		static void CreateViewHierarchy(UIView root, nfloat width, nfloat height)
+		{
+			root.BackgroundColor = UIColor.Red;
+
+			root.UsesYoga(true);
+			root.YogaWidth(width);
+			root.YogaWidth(height);
+			root.YogaAlignItems(YogaAlign.Center);
+			root.YogaJustify(YogaJustify.Center);
+
+			var child1 = new UIView { BackgroundColor = UIColor.Blue };
+			child1.YogaWidth(100);
+			child1.YogaHeight(100);
+			child1.UsesYoga(true);
+
+			var child2 = new UIView
+			{
+				BackgroundColor = UIColor.Green,
+				Frame = new CGRect { Size = new CGSize(200, 100) }
+			};
+
+			var child3 = new UIView
+			{
+				BackgroundColor = UIColor.Yellow,
+				Frame = new CGRect { Size = new CGSize(100, 100) }
+			};
+
+			child2.AddSubview(child3);
+			root.AddSubview(child1);
+			root.AddSubview(child2);
+			root.YogaApplyLayout();
+		}
+
+		public override void DidReceiveMemoryWarning()
+		{
+			base.DidReceiveMemoryWarning();
+			// Release any cached data, images, etc that aren't in use.
+		}
+	}
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.Test/ViewController.designer.cs

@@ -0,0 +1,17 @@
+//
+// This file has been generated automatically by MonoDevelop to store outlets and
+// actions made in the Xcode designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+
+namespace Facebook.Yoga.iOS.Test
+{
+    [Register("ViewController")]
+    partial class ViewController
+    {
+        void ReleaseDesignerOutlets()
+        {
+        }
+    }
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS.sln

@@ -0,0 +1,57 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS.Test", "Facebook.Yoga.iOS.Test\Facebook.Yoga.iOS.Test.csproj", "{3B27656A-129D-4779-BDAD-1A088DFDD9C5}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.YogaKit.iOS", "Facebook.YogaKit.iOS\Facebook.YogaKit.iOS.csproj", "{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS", "Facebook.Yoga.iOS\Facebook.Yoga.iOS.csproj", "{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+		Debug|iPhoneSimulator = Debug|iPhoneSimulator
+		Release|iPhone = Release|iPhone
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+		Debug|iPhone = Debug|iPhone
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|Any CPU.ActiveCfg = Debug|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|Any CPU.Build.0 = Debug|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|Any CPU.ActiveCfg = Release|iPhone
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|Any CPU.Build.0 = Release|iPhone
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhoneSimulator.ActiveCfg = Debug|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhoneSimulator.Build.0 = Debug|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhone.ActiveCfg = Release|iPhone
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhone.Build.0 = Release|iPhone
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhoneSimulator.ActiveCfg = Release|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.ActiveCfg = Debug|iPhone
+		{3B27656A-129D-4779-BDAD-1A088DFDD9C5}.Debug|iPhone.Build.0 = Debug|iPhone
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhone.Build.0 = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{33B1B6BE-F415-4819-A5FB-CFFE2E40AD6E}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|Any CPU.Build.0 = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|iPhone.Build.0 = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}.Debug|iPhone.Build.0 = Debug|Any CPU
+	EndGlobalSection
+EndGlobal

csharp/Xamarin.iOS/Facebook.Yoga.iOS/ApiDefinition.cs

@@ -0,0 +1,11 @@
+using System;
+
+using UIKit;
+using Foundation;
+using ObjCRuntime;
+using CoreGraphics;
+
+namespace Facebook.Yoga.iOS
+{
+	// The build will fail without ApiDefinition.cs
+}

csharp/Xamarin.iOS/Facebook.Yoga.iOS/CustomBuildAction.targets

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+	<PropertyGroup>
+		<CompileDependsOn>CopyInNativeLib;$(CompileDependsOn)</CompileDependsOn>
+	</PropertyGroup>
+	<!-- The # and , in this path does not play nice with the binding project logic, so make a copy -->
+	<Target Name="CopyInNativeLib" Inputs="..\..\..\buck-out\gen\csharp\yoganet-ios\libyoga.a" Outputs="$(ProjectDir)libyoga.a">
+		<Copy SourceFiles="..\..\..\buck-out\gen\csharp\yoganet-ios\libyoga.a" DestinationFiles="$(ProjectDir)/libyoga.a" />
+	</Target>
+</Project>

csharp/Xamarin.iOS/Facebook.Yoga.iOS/Facebook.Yoga.iOS.csproj

@@ -0,0 +1,121 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+	<PropertyGroup>
+		<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+		<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+		<ProjectGuid>{BE4CBFDA-02E2-4DF0-A81A-CEFB7987A708}</ProjectGuid>
+		<ProjectTypeGuids>{8FFB629D-F513-41CE-95D2-7ECE97B6EEEC};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+		<OutputType>Library</OutputType>
+		<RootNamespace>Facebook.Yoga.iOS</RootNamespace>
+		<AssemblyName>Facebook.Yoga.iOS</AssemblyName>
+		<IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+	</PropertyGroup>
+	<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+		<DebugSymbols>true</DebugSymbols>
+		<DebugType>full</DebugType>
+		<Optimize>false</Optimize>
+		<OutputPath>bin\Debug</OutputPath>
+		<DefineConstants>DEBUG;</DefineConstants>
+		<ErrorReport>prompt</ErrorReport>
+		<WarningLevel>4</WarningLevel>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+	</PropertyGroup>
+	<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+		<Optimize>true</Optimize>
+		<OutputPath>bin\Release</OutputPath>
+		<ErrorReport>prompt</ErrorReport>
+		<WarningLevel>4</WarningLevel>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+	</PropertyGroup>
+	<ItemGroup>
+		<Reference Include="System" />
+		<Reference Include="Xamarin.iOS" />
+		<Reference Include="System.Core" />
+	</ItemGroup>
+	<ItemGroup>
+		<Compile Include="Properties\AssemblyInfo.cs" />
+		<Compile Include="..\..\Facebook.Yoga\MeasureFunction.cs">
+		  <Link>MeasureFunction.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\MeasureOutput.cs">
+		  <Link>MeasureOutput.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\Native.cs">
+		  <Link>Native.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\Spacing.cs">
+		  <Link>Spacing.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaAlign.cs">
+		  <Link>YogaAlign.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaConstants.cs">
+		  <Link>YogaConstants.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaDimension.cs">
+		  <Link>YogaDimension.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaDirection.cs">
+		  <Link>YogaDirection.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaEdge.cs">
+		  <Link>YogaEdge.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaExperimentalFeature.cs">
+		  <Link>YogaExperimentalFeature.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaFlexDirection.cs">
+		  <Link>YogaFlexDirection.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaJustify.cs">
+		  <Link>YogaJustify.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaLogger.cs">
+		  <Link>YogaLogger.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaLogLevel.cs">
+		  <Link>YogaLogLevel.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaMeasureFunc.cs">
+		  <Link>YogaMeasureFunc.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaMeasureMode.cs">
+		  <Link>YogaMeasureMode.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaNode.Create.cs">
+		  <Link>YogaNode.Create.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaNode.cs">
+		  <Link>YogaNode.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaOverflow.cs">
+		  <Link>YogaOverflow.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaPositionType.cs">
+		  <Link>YogaPositionType.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaPrintOptions.cs">
+		  <Link>YogaPrintOptions.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaSize.cs">
+		  <Link>YogaSize.cs</Link>
+		</Compile>
+		<Compile Include="..\..\Facebook.Yoga\YogaWrap.cs">
+		  <Link>YogaWrap.cs</Link>
+		</Compile>
+	</ItemGroup>
+	<ItemGroup>
+		<ObjcBindingApiDefinition Include="ApiDefinition.cs" />
+	</ItemGroup>
+	<ItemGroup>
+		<BundleResource Include="CustomBuildAction.targets" />
+	</ItemGroup>
+	<ItemGroup>
+	  <NativeReference Include="libyoga.a">
+	    <Kind>Static</Kind>
+	    <SmartLink>False</SmartLink>
+	  </NativeReference>
+	</ItemGroup>
+	<Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.ObjCBinding.CSharp.targets" />
+	<Import Project="CustomBuildAction.targets" />
+</Project>

csharp/Xamarin.iOS/Facebook.Yoga.iOS/Facebook.Yoga.sln

@@ -0,0 +1,67 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.Yoga.iOS", "Facebook.Yoga.iOS.csproj", "{128FB32A-C4A1-4363-BF06-0A36E700B7FA}"
+EndProject
+Project("{D954291E-2A0B-460D-934E-DC6B0785DB48}") = "Facebook.YogaKit.Shared", "..\..\Facebook.YogaKit\Facebook.YogaKit.Shared.shproj", "{A24B3BA6-3143-4FFF-B8B8-1EDF166F5F4A}"
+EndProject
+Project("{D954291E-2A0B-460D-934E-DC6B0785DB48}") = "Facebook.Yoga.Shared", "..\..\Facebook.Yoga\Facebook.Yoga.Shared.shproj", "{91C42D32-291D-4B72-90B4-551663D60B8B}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.YogaKit.iOS", "..\Facebook.YogaKit.iOS\Facebook.YogaKit.iOS.csproj", "{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Facebook.YogaKit.iOS.Sample", "..\Facebook.YogaKit.iOS.Sample\Facebook.YogaKit.iOS.Sample.csproj", "{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Shared", "Shared", "{89A39C6B-6A7B-4458-872B-A0456550CAA6}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+		Debug|iPhoneSimulator = Debug|iPhoneSimulator
+		Release|iPhone = Release|iPhone
+		Release|iPhoneSimulator = Release|iPhoneSimulator
+		Debug|iPhone = Debug|iPhone
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|iPhone.Build.0 = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{128FB32A-C4A1-4363-BF06-0A36E700B7FA}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|iPhoneSimulator.ActiveCfg = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|iPhoneSimulator.Build.0 = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|iPhone.ActiveCfg = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|iPhone.Build.0 = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|iPhoneSimulator.ActiveCfg = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Release|iPhoneSimulator.Build.0 = Release|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|iPhone.ActiveCfg = Debug|Any CPU
+		{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}.Debug|iPhone.Build.0 = Debug|Any CPU
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|Any CPU.ActiveCfg = Debug|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|Any CPU.Build.0 = Debug|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|Any CPU.ActiveCfg = Release|iPhone
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|Any CPU.Build.0 = Release|iPhone
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|iPhoneSimulator.ActiveCfg = Debug|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|iPhoneSimulator.Build.0 = Debug|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|iPhone.ActiveCfg = Release|iPhone
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|iPhone.Build.0 = Release|iPhone
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|iPhoneSimulator.ActiveCfg = Release|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Release|iPhoneSimulator.Build.0 = Release|iPhoneSimulator
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|iPhone.ActiveCfg = Debug|iPhone
+		{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}.Debug|iPhone.Build.0 = Debug|iPhone
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{91C42D32-291D-4B72-90B4-551663D60B8B} = {89A39C6B-6A7B-4458-872B-A0456550CAA6}
+		{A24B3BA6-3143-4FFF-B8B8-1EDF166F5F4A} = {89A39C6B-6A7B-4458-872B-A0456550CAA6}
+	EndGlobalSection
+EndGlobal

csharp/Xamarin.iOS/Facebook.Yoga.iOS/Properties/AssemblyInfo.cs

@@ -0,0 +1,34 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+using Foundation;
+
+// This attribute allows you to mark your assemblies as “safe to link”. 
+// When the attribute is present, the linker—if enabled—will process the assembly 
+// even if you’re using the “Link SDK assemblies only” option, which is the default for device builds.
+
+[assembly: LinkerSafe]
+
+// Information about this assembly is defined by the following attributes. 
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle("Facebook.Yoga.iOS")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("rmarinho")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly, 
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/AppDelegate.cs

@@ -0,0 +1,59 @@
+using Foundation;
+using UIKit;
+
+namespace Facebook.YogaKit.iOS.Sample
+{
+    // The UIApplicationDelegate for the application. This class is responsible for launching the
+    // User Interface of the application, as well as listening (and optionally responding) to application events from iOS.
+    [Register("AppDelegate")]
+    public class AppDelegate : UIApplicationDelegate
+    {
+        // class-level declarations
+
+        public override UIWindow Window
+        {
+            get;
+            set;
+        }
+
+        public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
+        {
+            // Override point for customization after application launch.
+            // If not required for your application you can safely delete this method
+
+            return true;
+        }
+
+        public override void OnResignActivation(UIApplication application)
+        {
+            // Invoked when the application is about to move from active to inactive state.
+            // This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) 
+            // or when the user quits the application and it begins the transition to the background state.
+            // Games should use this method to pause the game.
+        }
+
+        public override void DidEnterBackground(UIApplication application)
+        {
+            // Use this method to release shared resources, save user data, invalidate timers and store the application state.
+            // If your application supports background exection this method is called instead of WillTerminate when the user quits.
+        }
+
+        public override void WillEnterForeground(UIApplication application)
+        {
+            // Called as part of the transiton from background to active state.
+            // Here you can undo many of the changes made on entering the background.
+        }
+
+        public override void OnActivated(UIApplication application)
+        {
+            // Restart any tasks that were paused (or not yet started) while the application was inactive. 
+            // If the application was previously in the background, optionally refresh the user interface.
+        }
+
+        public override void WillTerminate(UIApplication application)
+        {
+            // Called when the application is about to terminate. Save data, if needed. See also DidEnterBackground.
+        }
+    }
+}
+

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,157 @@
+{
+  "images": [
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "1x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "29x29",
+      "scale": "3x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "40x40",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "40x40",
+      "scale": "3x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "57x57",
+      "scale": "1x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "57x57",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "60x60",
+      "scale": "2x"
+    },
+    {
+      "idiom": "iphone",
+      "size": "60x60",
+      "scale": "3x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "29x29",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "29x29",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "40x40",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "40x40",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "50x50",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "50x50",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "72x72",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "72x72",
+      "scale": "2x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "76x76",
+      "scale": "1x"
+    },
+    {
+      "idiom": "ipad",
+      "size": "76x76",
+      "scale": "2x"
+    },
+    {
+      "size": "24x24",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "notificationCenter",
+      "subtype": "38mm"
+    },
+    {
+      "size": "27.5x27.5",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "notificationCenter",
+      "subtype": "42mm"
+    },
+    {
+      "size": "29x29",
+      "idiom": "watch",
+      "role": "companionSettings",
+      "scale": "2x"
+    },
+    {
+      "size": "29x29",
+      "idiom": "watch",
+      "role": "companionSettings",
+      "scale": "3x"
+    },
+    {
+      "size": "40x40",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "appLauncher",
+      "subtype": "38mm"
+    },
+    {
+      "size": "44x44",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "longLook",
+      "subtype": "42mm"
+    },
+    {
+      "size": "86x86",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "quickLook",
+      "subtype": "38mm"
+    },
+    {
+      "size": "98x98",
+      "idiom": "watch",
+      "scale": "2x",
+      "role": "quickLook",
+      "subtype": "42mm"
+    }
+  ],
+  "info": {
+    "version": 1,
+    "author": "xcode"
+  }
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "version" : 1,
+    "author" : "xcode"
+  }
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Entitlements.plist

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+</dict>
+</plist>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Facebook.YogaKit.iOS.Sample.csproj

@@ -0,0 +1,128 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">iPhoneSimulator</Platform>
+    <ProjectGuid>{6A094B74-FA9A-4E49-A8E1-F450A04E3E5B}</ProjectGuid>
+    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>Facebook.YogaKit.iOS.Sample</RootNamespace>
+    <AssemblyName>Facebook.YogaKit.iOS.Sample</AssemblyName>
+    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhoneSimulator' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Debug</OutputPath>
+    <DefineConstants>DEBUG;ENABLE_TEST_CLOUD;__IOS__</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchDebug>true</MtouchDebug>
+    <MtouchFastDev>true</MtouchFastDev>
+    <MtouchProfiling>true</MtouchProfiling>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <IOSDebuggerPort>56768</IOSDebuggerPort>
+    <MtouchLink>None</MtouchLink>
+    <MtouchArch>x86_64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+    <DeviceSpecificBuild>false</DeviceSpecificBuild>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhone' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhone\Release</OutputPath>
+    <DefineConstants></DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchFloat32>true</MtouchFloat32>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchArch>ARMv7, ARM64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|iPhoneSimulator' ">
+    <DebugType></DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\iPhoneSimulator\Release</OutputPath>
+    <DefineConstants></DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchLink>None</MtouchLink>
+    <MtouchArch>x86_64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|iPhone' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\iPhone\Debug</OutputPath>
+    <DefineConstants>DEBUG;ENABLE_TEST_CLOUD;</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <DeviceSpecificBuild>true</DeviceSpecificBuild>
+    <MtouchDebug>true</MtouchDebug>
+    <MtouchFastDev>true</MtouchFastDev>
+    <MtouchProfiling>true</MtouchProfiling>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchFloat32>true</MtouchFloat32>
+    <CodesignEntitlements>Entitlements.plist</CodesignEntitlements>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchArch>ARMv7, ARM64</MtouchArch>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.iOS" />
+  </ItemGroup>
+  <ItemGroup>
+    <ImageAsset Include="Assets.xcassets\AppIcon.appiconset\Contents.json" />
+    <ImageAsset Include="Assets.xcassets\Contents.json" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Resources\" />
+  </ItemGroup>
+  <ItemGroup>
+    <InterfaceDefinition Include="LaunchScreen.storyboard" />
+    <InterfaceDefinition Include="Main.storyboard" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="Info.plist" />
+    <None Include="Entitlements.plist" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Main.cs" />
+    <Compile Include="AppDelegate.cs" />
+    <Compile Include="ViewController.cs" />
+    <Compile Include="ViewController.designer.cs">
+      <DependentUpon>ViewController.cs</DependentUpon>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Facebook.YogaKit.iOS\Facebook.YogaKit.iOS.csproj">
+      <Project>{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}</Project>
+      <Name>Facebook.YogaKit.iOS</Name>
+    </ProjectReference>
+    <ProjectReference Include="..\Facebook.Yoga.iOS\Facebook.Yoga.iOS.csproj">
+      <Project>{128FB32A-C4A1-4363-BF06-0A36E700B7FA}</Project>
+      <Name>Facebook.Yoga.iOS</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
+</Project>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Info.plist

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+    <key>CFBundleName</key>
+    <string>Facebook.YogaKit.iOS.Sample</string>
+    <key>CFBundleIdentifier</key>
+    <string>com.xamarin.facebook-yogakit-ios-sample</string>
+    <key>CFBundleShortVersionString</key>
+    <string>1.0</string>
+    <key>CFBundleVersion</key>
+    <string>1.0</string>
+    <key>LSRequiresIPhoneOS</key>
+    <true/>
+    <key>MinimumOSVersion</key>
+    <string>10.2</string>
+    <key>UIDeviceFamily</key>
+    <array>
+        <integer>1</integer>
+        <integer>2</integer>
+    </array>
+    <key>UILaunchStoryboardName</key>
+    <string>LaunchScreen</string>
+    <key>UIMainStoryboardFile</key>
+    <string>Main</string>
+    <key>UIRequiredDeviceCapabilities</key>
+    <array>
+        <string>armv7</string>
+    </array>
+    <key>UISupportedInterfaceOrientations</key>
+    <array>
+        <string>UIInterfaceOrientationPortrait</string>
+        <string>UIInterfaceOrientationLandscapeLeft</string>
+        <string>UIInterfaceOrientationLandscapeRight</string>
+    </array>
+    <key>XSAppIconAssets</key>
+    <string>Assets.xcassets/AppIcon.appiconset</string>
+</dict>
+</plist>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/LaunchScreen.storyboard

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9532" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" initialViewController="01J-lp-oVM">
+    <dependencies>
+        <deployment identifier="iOS" />
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9530" />
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="EHf-IW-A2E">
+            <objects>
+                <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="Llm-lL-Icb" />
+                        <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok" />
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600" />
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES" />
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite" />
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder" />
+            </objects>
+            <point key="canvasLocation" x="53" y="375" />
+        </scene>
+    </scenes>
+</document>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Main.cs

@@ -0,0 +1,15 @@
+using UIKit;
+
+namespace Facebook.YogaKit.iOS.Sample
+{
+    public class Application
+    {
+        // This is the main entry point of the application.
+        static void Main(string[] args)
+        {
+            // if you want to use a different Application Delegate class from "AppDelegate"
+            // you can specify it here.
+            UIApplication.Main(args, null, "AppDelegate");
+        }
+    }
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/Main.storyboard

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="6211" systemVersion="14A298i" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="BYZ-38-t0r">
+    <dependencies>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="6204" />
+    </dependencies>
+    <scenes>
+        <!--View Controller-->
+        <scene sceneID="tne-QT-ifu">
+            <objects>
+                <viewController id="BYZ-38-t0r" customClass="ViewController" customModuleProvider="" sceneMemberID="viewController">
+                    <layoutGuides>
+                        <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ" />
+                        <viewControllerLayoutGuide type="bottom" id="wfy-db-euE" />
+                    </layoutGuides>
+                    <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+                        <rect key="frame" x="0.0" y="0.0" width="600" height="600" />
+                        <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES" />
+                        <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="calibratedWhite" />
+                    </view>
+                </viewController>
+                <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder" />
+            </objects>
+        </scene>
+    </scenes>
+</document>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/ViewController.cs

@@ -0,0 +1,60 @@
+using System;
+using CoreGraphics;
+using Facebook.Yoga;
+using UIKit;
+
+namespace Facebook.YogaKit.iOS.Sample
+{
+	public partial class ViewController : UIViewController
+	{
+		protected ViewController(IntPtr handle) : base(handle)
+		{
+			// Note: this .ctor should not contain any initialization logic.
+		}
+
+		public override void ViewDidLoad()
+		{
+			base.ViewDidLoad();
+			CreateViewHierarchy(View, View.Bounds.Size.Width, View.Bounds.Size.Height);
+		}
+
+		static void CreateViewHierarchy(UIView root, nfloat width, nfloat height)
+		{
+			root.BackgroundColor = UIColor.Red;
+
+			root.UsesYoga(true);
+			root.YogaWidth(width);
+			root.YogaWidth(height);
+			root.YogaAlignItems(YogaAlign.Center);
+			root.YogaJustify(YogaJustify.Center);
+
+			var child1 = new UIView { BackgroundColor = UIColor.Blue };
+			child1.YogaWidth(100);
+			child1.YogaHeight(100);
+			child1.UsesYoga(true);
+
+			var child2 = new UIView
+			{
+				BackgroundColor = UIColor.Green,
+				Frame = new CGRect { Size = new CGSize(200, 100) }
+			};
+
+			var child3 = new UIView
+			{
+				BackgroundColor = UIColor.Yellow,
+				Frame = new CGRect { Size = new CGSize(100, 100) }
+			};
+
+			child2.AddSubview(child3);
+			root.AddSubview(child1);
+			root.AddSubview(child2);
+			root.YogaApplyLayout();
+		}
+
+		public override void DidReceiveMemoryWarning()
+		{
+			base.DidReceiveMemoryWarning();
+			// Release any cached data, images, etc that aren't in use.
+		}
+	}
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS.Sample/ViewController.designer.cs

@@ -0,0 +1,17 @@
+//
+// This file has been generated automatically by MonoDevelop to store outlets and
+// actions made in the Xcode designer. If it is removed, they will be lost.
+// Manual changes to this file may not be handled correctly.
+//
+using Foundation;
+
+namespace Facebook.YogaKit.iOS.Sample
+{
+    [Register("ViewController")]
+    partial class ViewController
+    {
+        void ReleaseDesignerOutlets()
+        {
+        }
+    }
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS/Facebook.YogaKit.iOS.csproj

@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{0C38AA9D-3178-4B43-9C3B-3C97A90FB1B0}</ProjectGuid>
+    <ProjectTypeGuids>{FEACFBD2-3405-455C-9665-78FE426C6842};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <OutputType>Library</OutputType>
+    <RootNamespace>Facebook.YogaKit.iOS</RootNamespace>
+    <AssemblyName>Facebook.YogaKit.iOS</AssemblyName>
+    <IPhoneResourcePrefix>Resources</IPhoneResourcePrefix>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug</OutputPath>
+    <DefineConstants>DEBUG;__IOS__</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchDebug>true</MtouchDebug>
+    <MtouchFastDev>true</MtouchFastDev>
+    <MtouchProfiling>true</MtouchProfiling>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <IOSDebuggerPort>53781</IOSDebuggerPort>
+    <DeviceSpecificBuild>false</DeviceSpecificBuild>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release</OutputPath>
+    <DefineConstants></DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <CodesignKey>iPhone Developer</CodesignKey>
+    <MtouchUseSGen>true</MtouchUseSGen>
+    <MtouchUseRefCounting>true</MtouchUseRefCounting>
+    <MtouchLink>SdkOnly</MtouchLink>
+    <MtouchHttpClientHandler>HttpClientHandler</MtouchHttpClientHandler>
+    <MtouchTlsProvider>Default</MtouchTlsProvider>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="Xamarin.iOS" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Resources\" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\Facebook.Yoga.iOS\Facebook.Yoga.iOS.csproj">
+      <Project>{128FB32A-C4A1-4363-BF06-0A36E700B7FA}</Project>
+      <Name>Facebook.Yoga.iOS</Name>
+    </ProjectReference>
+  </ItemGroup>
+  <Import Project="..\..\Facebook.YogaKit\Facebook.YogaKit.projitems" Label="Shared" Condition="Exists('..\..\Facebook.YogaKit\Facebook.YogaKit.projitems')" />
+  <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.iOS.CSharp.targets" />
+</Project>

csharp/Xamarin.iOS/Facebook.YogaKit.iOS/Properties/AssemblyInfo.cs

@@ -0,0 +1,26 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+
+// Information about this assembly is defined by the following attributes. 
+// Change them to the values specific to your project.
+
+[assembly: AssemblyTitle("Facebook.YogaKit.iOS")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("")]
+[assembly: AssemblyCopyright("rmarinho")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// The assembly version has the format "{Major}.{Minor}.{Build}.{Revision}".
+// The form "{Major}.{Minor}.*" will automatically update the build and revision,
+// and "{Major}.{Minor}.{Build}.*" will update just the revision.
+
+[assembly: AssemblyVersion("1.0.*")]
+
+// The following attributes are used to specify the signing key for the assembly, 
+// if desired. See the Mono documentation for more information about signing.
+
+//[assembly: AssemblyDelaySign(false)]
+//[assembly: AssemblyKeyFile("")]

csharp/Xamarin.iOS/Facebook.YogaKit.iOS/YogaKit.cs

@@ -0,0 +1,180 @@
+using System;
+using System.Collections.Generic;
+using Facebook.Yoga;
+#if __IOS__
+using NativeView = UIKit.UIView;
+#endif
+
+namespace Facebook.YogaKit.iOS
+{
+	public static class YogaKit
+	{
+		internal static Dictionary<YogaNode, object> Bridges = new Dictionary<YogaNode, object>();
+
+		public static void UsesYoga(this NativeView view, bool usesYoga)
+		{
+			YogaKitNative.UsesYoga(view, usesYoga);
+		}
+
+		public static bool GetUsesYoga(this NativeView view)
+		{
+			return YogaKitNative.GetUsesYoga(view);
+		}
+
+		public static void IncludeYogaLayout(this NativeView view, bool includeInLayout)
+		{
+			YogaKitNative.IncludeYogaLayout(view, includeInLayout);
+		}
+
+		public static bool GetIncludeYogaLayout(this NativeView view)
+		{
+			return YogaKitNative.GetIncludeYogaLayout(view);
+		}
+
+		public static void YogaWidth(this NativeView view, nfloat width)
+		{
+			var node = GetYogaNode(view);
+			node.Width = (float)width;
+		}
+
+		public static void YogaHeight(this NativeView view, nfloat height)
+		{
+			var node = GetYogaNode(view);
+			node.Height = (float)height;
+		}
+
+		public static void YogaMinWidth(this NativeView view, float minWidth)
+		{
+			var node = GetYogaNode(view);
+			node.MinWidth = minWidth;
+		}
+
+		public static void YogaMinHeight(this NativeView view, float minHeight)
+		{
+			var node = GetYogaNode(view);
+			node.MinHeight = minHeight;
+		}
+
+		public static void YogaMaxWidth(this NativeView view, float maxWidth)
+		{
+			var node = GetYogaNode(view);
+			node.MaxWidth = maxWidth;
+		}
+
+		public static void YogaMaxHeight(this NativeView view, float maxHeight)
+		{
+			var node = GetYogaNode(view);
+			node.MaxHeight = maxHeight;
+		}
+
+		public static void YogaAlignItems(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignItems = align;
+		}
+
+		public static void YogaJustify(this NativeView view, YogaJustify justify)
+		{
+			var node = GetYogaNode(view);
+			node.JustifyContent = justify;
+		}
+
+		public static void YogaAlign(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignContent = align;
+		}
+
+		public static void YogaAlignSelf(this NativeView view, YogaAlign align)
+		{
+			var node = GetYogaNode(view);
+			node.AlignSelf = align;
+		}
+
+		public static void YogaDirection(this NativeView view, YogaDirection direction)
+		{
+			var node = GetYogaNode(view);
+			node.StyleDirection = direction;
+		}
+
+		public static void YogaFlexDirection(this NativeView view, YogaFlexDirection direction)
+		{
+			var node = GetYogaNode(view);
+			node.FlexDirection = direction;
+		}
+
+		public static void YogaPositionType(this NativeView view, YogaPositionType position)
+		{
+			var node = GetYogaNode(view);
+			node.PositionType = position;
+		}
+
+		public static void YogaFlexWrap(this NativeView view, YogaWrap wrap)
+		{
+			var node = GetYogaNode(view);
+			node.Wrap = wrap;
+		}
+
+		public static void YogaFlexShrink(this NativeView view, float shrink)
+		{
+			var node = GetYogaNode(view);
+			node.FlexShrink = shrink;
+		}
+
+		public static void YogaFlexGrow(this NativeView view, float grow)
+		{
+			var node = GetYogaNode(view);
+			node.FlexGrow = grow;
+		}
+
+		public static void YogaFlexBasis(this NativeView view, float basis)
+		{
+			var node = GetYogaNode(view);
+			node.FlexBasis = basis;
+		}
+
+		public static void YogaPositionForEdge(this NativeView view, float position, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetPosition(edge, position);
+		}
+
+		public static void YogaMarginForEdge(this NativeView view, float margin, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetMargin(edge, margin);
+		}
+
+		public static void YogaPaddingForEdge(this NativeView view, float padding, YogaEdge edge)
+		{
+			var node = GetYogaNode(view);
+			node.SetPadding(edge, padding);
+		}
+
+		public static void YogaAspectRation(this NativeView view, float ratio)
+		{
+			var node = GetYogaNode(view);
+			node.StyleAspectRatio = ratio;
+		}
+
+		#region Layout and Sizing
+		public static void YogaApplyLayout(this NativeView view)
+		{
+			YogaKitNative.CalculateLayoutWithSize(view, view.Bounds.Size);
+			YogaKitNative.ApplyLayoutToViewHierarchy(view);
+		}
+
+		public static YogaDirection YogaResolvedDirection(this NativeView view)
+		{
+			var node = GetYogaNode(view);
+			return node.LayoutDirection;
+		}
+
+		#endregion
+
+		public static YogaNode GetYogaNode(this NativeView view)
+		{
+			return YogaKitNative.GetYogaNode(view);
+		}
+	}
+}

csharp/Xamarin.iOS/Facebook.YogaKit.iOS/YogaKitNative.cs

@@ -0,0 +1,253 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.InteropServices;
+using CoreGraphics;
+using Facebook.Yoga;
+using Foundation;
+using UIKit;
+
+namespace Facebook.YogaKit.iOS
+{
+	internal static class YogaKitNative
+	{
+		static NSString YogaNodeKey = new NSString("YogaNode");
+
+		static NSString UsesYogaKey = new NSString("UsesYoga");
+
+		static NSString IncludeYogaKey = new NSString("UsesYoga");
+
+		public static void UsesYoga(UIView view, bool usesYoga)
+		{
+			var value = NSNumber.FromBoolean(usesYoga);
+			objc_setAssociatedObject(view.Handle, UsesYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+		}
+
+		public static bool GetUsesYoga(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, UsesYogaKey.Handle)) as NSNumber;
+			return value == null ? false : value.BoolValue;
+		}
+
+		public static void IncludeYogaLayout(UIView view, bool includeInLayout)
+		{
+			var value = NSNumber.FromBoolean(includeInLayout);
+			objc_setAssociatedObject(view.Handle, IncludeYogaKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+		}
+
+		public static bool GetIncludeYogaLayout(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, IncludeYogaKey.Handle)) as NSNumber;
+			return value == null ? true : value.BoolValue;
+		}
+
+		public static YogaNode GetYogaNode(UIView view)
+		{
+			var value = ObjCRuntime.Runtime.GetNSObject(objc_getAssociatedObject(view.Handle, YogaNodeKey.Handle)) as YGNodeBridge;
+			if (value == null)
+			{
+				value = new YGNodeBridge();
+				value.SetContext(view);
+				objc_setAssociatedObject(view.Handle, YogaNodeKey.Handle, value.Handle, AssociationPolicy.RETAIN_NONATOMIC);
+			}
+			return value.node;
+		}
+
+		public static CGSize CalculateLayoutWithSize(UIView view, CGSize size)
+		{
+			if (!view.GetUsesYoga())
+			{
+				System.Diagnostics.Debug.WriteLine("Doesn't use Yoga");
+			}
+			AttachNodesFromViewHierachy(view);
+			var node = GetYogaNode(view);
+
+			node.Width = (float)size.Width;
+			node.Height = (float)size.Height;
+			node.CalculateLayout();
+
+			return new CGSize { Width = node.LayoutWidth, Height = node.LayoutHeight };
+		}
+
+		public static void ApplyLayoutToViewHierarchy(UIView view)
+		{
+			if (!view.GetIncludeYogaLayout())
+				return;
+
+			var node = GetYogaNode(view);
+			CGPoint topLeft = new CGPoint(node.LayoutX, node.LayoutY);
+			CGPoint bottomRight = new CGPoint(topLeft.X + node.LayoutWidth, topLeft.Y + node.LayoutHeight);
+			view.Frame = new CGRect(RoundPixelValue(topLeft.X), RoundPixelValue(topLeft.Y), RoundPixelValue(bottomRight.X) - RoundPixelValue(topLeft.X), RoundPixelValue(bottomRight.Y) - RoundPixelValue(topLeft.Y));
+			bool isLeaf = !view.GetUsesYoga() || view.Subviews.Length == 0;
+			if (!isLeaf)
+			{
+				for (int i = 0; i < view.Subviews.Length; i++)
+				{
+					ApplyLayoutToViewHierarchy(view.Subviews[i]);
+				}
+			}
+		}
+
+		public static CGSize YogaIntrinsicSize(this UIView view)
+		{
+			var constrainedSize = new CGSize
+			{
+				Width = float.NaN,
+				Height = float.NaN
+			};
+			return CalculateLayoutWithSize(view, constrainedSize);
+		}
+
+		static long MeasureView(YogaNode node, float width, YogaMeasureMode widthMode, float height, YogaMeasureMode heightMode)
+		{
+			var constrainedWidth = (widthMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : width;
+			var constrainedHeight = (heightMode == YogaMeasureMode.Undefined) ? nfloat.MaxValue : height;
+
+			UIView view = null;
+			if (YogaKit.Bridges.ContainsKey(node))
+				(YogaKit.Bridges[node] as YGNodeBridge).viewRef.TryGetTarget(out view);
+
+			var sizeThatFits = view.SizeThatFits(new CGSize(constrainedWidth, constrainedHeight));
+
+			var finalWidth = SanitizeMeasurement(constrainedWidth, sizeThatFits.Width, widthMode);
+			var finalHeight = SanitizeMeasurement(constrainedHeight, sizeThatFits.Height, heightMode);
+
+			return MeasureOutput.Make(finalWidth, finalHeight);
+		}
+
+		static float SanitizeMeasurement(nfloat constrainedSize, nfloat measuredSize, YogaMeasureMode measureMode)
+		{
+			float result;
+			if (measureMode == YogaMeasureMode.Exactly)
+			{
+				result = (float)constrainedSize;
+			}
+			else if (measureMode == YogaMeasureMode.AtMost)
+			{
+				result = (float)Math.Min(constrainedSize, measuredSize);
+			}
+			else {
+				result = (float)measuredSize;
+			}
+
+			return result;
+
+		}
+
+		static double RoundPixelValue(nfloat value)
+		{
+			nfloat scale = UIScreen.MainScreen.Scale;
+
+			return Math.Round(value * scale) / scale;
+		}
+
+		static void AttachNodesFromViewHierachy(UIView view)
+		{
+			var node = GetYogaNode(view);
+
+			// Only leaf nodes should have a measure function
+			if (!view.GetUsesYoga() || view.Subviews.Length == 0)
+			{
+				node.SetMeasureFunction(MeasureView);
+				RemoveAllChildren(node);
+			}
+			else
+			{
+				node.SetMeasureFunction(null);
+				// Create a list of all the subviews that we are going to use for layout.
+				var subviewsToInclude = new List<UIView>();
+				foreach (var subview in view.Subviews)
+				{
+					if (subview.GetIncludeYogaLayout())
+					{
+						subviewsToInclude.Add(subview);
+					}
+				}
+
+				var shouldReconstructChildList = false;
+				if (node.Count != subviewsToInclude.Count)
+				{
+					shouldReconstructChildList = true;
+				}
+				else
+				{
+					for (int i = 0; i < subviewsToInclude.Count; i++)
+					{
+						if (node[i] != GetYogaNode(subviewsToInclude[i]))
+						{
+							shouldReconstructChildList = true;
+							break;
+						}
+					}
+				}
+
+				if (shouldReconstructChildList)
+				{
+					RemoveAllChildren(node);
+
+					for (int i = 0; i < subviewsToInclude.Count; i++)
+					{
+						var subView = subviewsToInclude[i];
+						node.Insert(i, subView.GetYogaNode());
+						AttachNodesFromViewHierachy(subView);
+					}
+				}
+			}
+		}
+
+		static void RemoveAllChildren(YogaNode node)
+		{
+			if (node == null)
+				return;
+
+			while (node.Count > 0)
+			{
+				node.Clear();
+			}
+		}
+
+
+		[DllImport("/usr/lib/libobjc.dylib")]
+		static extern void objc_setAssociatedObject(IntPtr @object, IntPtr key, IntPtr value, AssociationPolicy policy);
+
+		[DllImport("/usr/lib/libobjc.dylib")]
+		static extern IntPtr objc_getAssociatedObject(IntPtr @object, IntPtr key);
+
+		enum AssociationPolicy
+		{
+			ASSIGN = 0,
+			RETAIN_NONATOMIC = 1,
+			COPY_NONATOMIC = 3,
+			RETAIN = 01401,
+			COPY = 01403,
+		}
+	}
+
+	class YGNodeBridge : NSObject
+	{
+		bool disposed;
+		internal WeakReference<UIView> viewRef;
+		internal YogaNode node;
+		public YGNodeBridge()
+		{
+			node = new YogaNode();
+		}
+
+		public void SetContext(UIView view)
+		{
+			viewRef = new WeakReference<UIView>(view);
+			YogaKit.Bridges.Add(node, this);
+		}
+
+		protected override void Dispose(bool disposing)
+		{
+			if (disposing && !disposed)
+			{
+				disposed = true;
+				YogaKit.Bridges.Remove(node);
+				viewRef = null;
+				node = null;
+			}
+			base.Dispose(disposing);
+		}
+	}
+}