Add public PredefinedLayouts

UIX/Microsoft/Iris/Layouts/AnchorLayout.cs

@@ -350,6 +350,15 @@ namespace Microsoft.Iris.Layouts
             return null;
         }
 
+        public bool Equals(ILayout other)
+        {
+            if (other is not AnchorLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && SizeToHorizontalChildren == o.SizeToHorizontalChildren
+                && SizeToVerticalChildren == o.SizeToVerticalChildren;
+        }
+
         internal static DataCookie InputData => s_dataProperty;
 
         internal enum LayoutPhase

UIX/Microsoft/Iris/Layouts/DefaultLayout.cs

@@ -6,6 +6,7 @@
 
 using Microsoft.Iris.Layout;
 using Microsoft.Iris.Render;
+using System;
 
 namespace Microsoft.Iris.Layouts
 {
@@ -42,5 +43,12 @@ namespace Microsoft.Iris.Layouts
             foreach (ILayoutNode layoutChild in layoutNode.LayoutChildren)
                 layoutChild.Arrange(slot);
         }
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not DefaultLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment;
+        }
     }
 }

UIX/Microsoft/Iris/Layouts/DockLayout.cs

@@ -120,5 +120,13 @@ namespace Microsoft.Iris.Layouts
                 dockLayoutInput = _defaultLayoutInput ?? s_defaultLayoutInput;
             return dockLayoutInput;
         }
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not DockLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && DefaultLayoutInput.ToString() == other.DefaultChildAlignment.ToString();
+        }
     }
 }

UIX/Microsoft/Iris/Layouts/FlowLayout.cs

@@ -696,6 +696,21 @@ namespace Microsoft.Iris.Layouts
             return majorMinor;
         }
 
+        public bool Equals(ILayout other)
+        {
+            if (other is not FlowLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && Orientation == o.Orientation
+                && Spacing == o.Spacing
+                && AllowWrap == o.AllowWrap
+                && StripAlignment == o.StripAlignment
+                && Repeat == o.Repeat
+                && RepeatGap == o.RepeatGap
+                && MissingItemPolicy == o.MissingItemPolicy
+                && MinimumSampleSize == o.MinimumSampleSize;
+        }
+
         internal class Record
         {
             public int Index;

UIX/Microsoft/Iris/Layouts/GridLayout.cs

@@ -538,6 +538,20 @@ namespace Microsoft.Iris.Layouts
             return roundUp ? (int)Math.Ceiling(num) : (int)Math.Floor(num);
         }
 
+        public bool Equals(ILayout other)
+        {
+            if (other is not GridLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && Orientation == o.Orientation
+                && ReferenceSize == o.ReferenceSize
+                && Rows == o.Rows
+                && Columns == o.Columns
+                && Spacing == o.Spacing
+                && Repeat == o.Repeat
+                && RepeatGap == o.RepeatGap;
+        }
+
         private enum ViewIntersectionType
         {
             BeginOffscreen,

UIX/Microsoft/Iris/Layouts/PopupLayout.cs

@@ -12,6 +12,7 @@ using Microsoft.Iris.Render;
 using Microsoft.Iris.RenderAPI.Drawing;
 using Microsoft.Iris.Session;
 using Microsoft.Iris.UI;
+using Microsoft.Iris.ViewItems;
 using System;
 using System.Collections;
 
@@ -271,6 +272,13 @@ namespace Microsoft.Iris.Layouts
             }
         }
 
+        public bool Equals(ILayout other)
+        {
+            if (other is not PopupLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment;
+        }
+
         private class PlacementTargetInfo
         {
             public ViewItem child;

UIX/Microsoft/Iris/Layouts/RotateLayout.cs

@@ -71,5 +71,13 @@ namespace Microsoft.Iris.Layouts
         private static Rectangle RotateRect180(Rectangle rect, Point offset) => new Rectangle(-rect.Right + offset.X, -rect.Bottom + offset.Y, rect.Width, rect.Height);
 
         private static Rectangle RotateRect270(Rectangle rect, Point offset) => new Rectangle(-rect.Bottom + offset.X, rect.X + offset.Y, rect.Height, rect.Width);
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not RotateLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && AngleDegrees == o.AngleDegrees;
+        }
     }
 }

UIX/Microsoft/Iris/Layouts/ScaleLayout.cs

@@ -8,6 +8,7 @@ using Microsoft.Iris.Drawing;
 using Microsoft.Iris.Layout;
 using Microsoft.Iris.Render;
 using Microsoft.Iris.RenderAPI.Drawing;
+using Microsoft.Iris.ViewItems;
 using System;
 
 namespace Microsoft.Iris.Layouts
@@ -92,5 +93,15 @@ namespace Microsoft.Iris.Layouts
             view.Height = (int)Math.Round(view.Height / (double)scale.Height);
             return view;
         }
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not ScaleLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && MinimumScale == o.MinimumScale
+                && MaximumScale == o.MaximumScale
+                && MaintainAspectRatio == o.MaintainAspectRatio;
+        }
     }
 }

UIX/Microsoft/Iris/Layouts/ScrollingLayout.cs

@@ -329,5 +329,14 @@ namespace Microsoft.Iris.Layouts
         public static bool ScrollFocusIntoView => s_allowScrollFocusIntoView;
 
         public static void DisallowScrollFocusIntoView() => s_allowScrollFocusIntoView = false;
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not ScrollingLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment
+                && Orientation == o.Orientation
+                && Prefetch == o.Prefetch;
+        }
     }
 }

UIX/Microsoft/Iris/Layouts/StackLayout.cs

@@ -7,6 +7,7 @@
 using Microsoft.Iris.Layout;
 using Microsoft.Iris.Library;
 using Microsoft.Iris.Render;
+using Microsoft.Iris.ViewItems;
 using System;
 
 namespace Microsoft.Iris.Layouts
@@ -96,5 +97,12 @@ namespace Microsoft.Iris.Layouts
                 stackLayoutInput = s_defaultLayoutInput;
             return stackLayoutInput;
         }
+
+        public bool Equals(ILayout other)
+        {
+            if (other is not StackLayout o) return false;
+
+            return DefaultChildAlignment == o.DefaultChildAlignment;
+        }
     }
 }