Conversion of Constraint file from objective c to c#

JazzHandsCSharp/Screenmedia.IFTTT.JazzHands/AnimationFrame.cs

@@ -13,6 +13,7 @@ public class AnimationFrame
         public Single Angle;
 		public Transform3D Transform = new Transform3D();
         public Single Scale;
+		public Single constraintConstant;
 	}
 }
 

JazzHandsCSharp/Screenmedia.IFTTT.JazzHands/AnimationKeyFrame.cs

@@ -260,6 +260,7 @@ public enum AnimationType
         Angle,
         Transform,
         Scale,
+		constraintConstant
     }
 }
 

JazzHandsCSharp/Screenmedia.IFTTT.JazzHands/ConstraintsAnimation.cs

@@ -0,0 +1,47 @@
+using System;
+using MonoTouch.UIKit;
+using System.Linq;
+using MonoTouch.CoreGraphics;
+
+namespace Screenmedia.IFTTT.JazzHands
+{
+	public class ConstraintsAnimation: Animation
+	{
+		public ConstraintsAnimation (UIView view) : base(view)
+		{
+		}
+		public override void Animate(int time)
+		{
+			if (KeyFrames.Count() <= 1)
+				return;
+
+			AnimationFrame animationFrame = AnimationFrameForTime(time);
+
+//			NSLayoutConstraint viewConstraint = new NSLayoutConstraint ();
+//			viewConstraint.Constant=animationFrame.constraintConstant;
+
+			View.TranslatesAutoresizingMaskIntoConstraints = false;
+
+			View.Frame = animationFrame.Frame;
+
+			View.AddConstraints (new[] {
+				NSLayoutConstraint.Create (View, NSLayoutAttribute.Height, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, 14),
+				NSLayoutConstraint.Create (View, NSLayoutAttribute.Width, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, animationFrame.constraintConstant),
+			});
+
+			View.LayoutIfNeeded ();
+
+		}
+
+		public override AnimationFrame FrameForTime(int time,
+			AnimationKeyFrame startKeyFrame,
+			AnimationKeyFrame endKeyFrame)
+		{
+			AnimationFrame animationFrame = new AnimationFrame ();
+			animationFrame.constraintConstant = TweenValueForStartTime (startKeyFrame.Time, endKeyFrame.Time, startKeyFrame.constraintConstant, endKeyFrame.constraintConstant, time);
+
+			return animationFrame;
+		}
+	}
+}
+

JazzHandsCSharp/Screenmedia.IFTTT.JazzHands/Screenmedia.IFTTT.JazzHands.csproj

@@ -36,6 +36,7 @@
   </ItemGroup>
   <ItemGroup>
     <Folder Include="Resources\" />
+    <Folder Include="src\" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Properties\AssemblyInfo.cs" />
@@ -53,6 +54,7 @@
     <Compile Include="ScaleAnimation.cs" />
     <Compile Include="Transform3DAnimation.cs" />
     <Compile Include="Transform3D.cs" />
+    <Compile Include="ConstraintsAnimation.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildExtensionsPath)\Xamarin\iOS\Xamarin.MonoTouch.CSharp.targets" />
 </Project>

JazzHandsCSharp/Screenmedia.IFTTT.JazzHandsDemo/JHViewController.cs

@@ -13,12 +13,14 @@ namespace Screenmedia.IFTTT.JazzHandsDemo
 {
 	public class JHViewController : AnimatedScrollViewController, IAnimatedScrollViewController
 	{
-		private const int NumberOfPages = 4;
+		private const int NumberOfPages = 5;
 
 		public UIImageView Wordmark { get; set;}
 		public UIImageView Unicorn { get; set;}
 		public UILabel LastLabel { get; set;}
 		public UILabel FirstLabel { get; set;}
+		public UITextField InputText { get; set;}
+		public UIButton InputButton { get; set;}
 
 
 		public override void DidReceiveMemoryWarning ()
@@ -72,6 +74,25 @@ private void PlaceViews ()
 			UILabel fourthPageText = AddLabel ("Optimized for scrolling intros", true, 4, 0);
 			ScrollView.AddSubview(fourthPageText);
 
+			InputText = AddTextField ("Animation Test", true, 5, 0);
+
+			//InputText.TranslatesAutoresizingMaskIntoConstraints = false;
+
+			InputText.AddConstraints (new[] {
+				NSLayoutConstraint.Create (InputText, NSLayoutAttribute.Height, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, 30),
+				NSLayoutConstraint.Create (InputText, NSLayoutAttribute.Width, NSLayoutRelation.Equal, null, NSLayoutAttribute.NoAttribute, 1, 180),
+			});
+
+
+			ScrollView.Add (InputText);
+
+			ScrollView.AddConstraints (new[] {
+				NSLayoutConstraint.Create (InputText, NSLayoutAttribute.Left, NSLayoutRelation.Equal, ScrollView, NSLayoutAttribute.Left, 1, (View.Frame.Size.Width * 4)+50),
+				NSLayoutConstraint.Create (InputText, NSLayoutAttribute.Top, NSLayoutRelation.Equal, ScrollView, NSLayoutAttribute.Top, 1, 130),
+			});
+
+			View.LayoutIfNeeded ();
+
 			LastLabel = fourthPageText;
 		}
 
@@ -96,6 +117,22 @@ private UILabel AddLabel(string text, bool IsOffset, int page = 0, float y = 0)
 			return l;
 		}
 
+		private UITextField AddTextField(string text, bool IsOffset, int page = 0, float y = 0)
+		{
+			var l = new UITextField();
+			l.Text = text;
+			l.SizeToFit();
+			l.Center = View.Center;
+			l.BackgroundColor = UIColor.Gray;
+			if (IsOffset) 
+			{
+				var rect = l.Frame;
+				rect.Offset (new PointF (TimeForPage (page), y));
+				l.Frame = rect;
+			}
+			return l;
+		}
+
 	    private void ConfigureAnimation()
 	    {
 	        Single dy = 240;
@@ -244,6 +281,32 @@ private void ConfigureAnimation()
 					Alpha = 0.0f
 				});
 			Animator.AddAnimation(labelAlphaAnimation);
+
+			//Constraint Animation on textfield of last page
+
+			ConstraintsAnimation textFieldConstraintAnimation = new ConstraintsAnimation (this.InputText);
+
+			textFieldConstraintAnimation.AddKeyFrame (new AnimationKeyFrame ()
+				{ 
+					Time = TimeForPage(4),
+					constraintConstant=180
+				});
+
+			textFieldConstraintAnimation.AddKeyFrame (new AnimationKeyFrame ()
+				{ 
+					Time = TimeForPage(4.50f),
+					constraintConstant=200
+				});
+
+			textFieldConstraintAnimation.AddKeyFrame (new AnimationKeyFrame ()
+				{ 
+					Time = TimeForPage(5),
+					constraintConstant=80
+				});
+
+
+
+			Animator.AddAnimation(textFieldConstraintAnimation);
 
 		}