1 files changed, 109 insertions, 0 deletions
diff --git a/Xamarin.Forms.ControlGallery.WindowsUniversal/MainPage.xaml.cs b/Xamarin.Forms.ControlGallery.WindowsUniversal/MainPage.xaml.cs
new file mode 100644
index 00000000..7e16e83c
--- /dev/null
+++ b/Xamarin.Forms.ControlGallery.WindowsUniversal/MainPage.xaml.cs
@@ -0,0 +1,109 @@
+// The Blank Page item template is documented at http://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409
+
+using System;
+using Windows.Foundation;
+using Windows.Graphics.Display;
+using Windows.UI.ViewManagement;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Media;
+using Xamarin.Forms.Controls;
+using Xamarin.Forms.Platform.UWP;
+
+namespace Xamarin.Forms.ControlGallery.WindowsUniversal
+{
+	/// <summary>
+	/// An empty page that can be used on its own or navigated to within a Frame.
+	/// </summary>
+	public sealed partial class MainPage
+    {
+        public MainPage()
+        {
+            InitializeComponent();
+
+			var app = new Controls.App ();
+
+			var mdp = app.MainPage as MasterDetailPage;
+
+			var detail = mdp?.Detail as NavigationPage;
+			if (detail != null) {
+				detail.Pushed += (sender, args) => {
+					var nncgPage = args.Page as NestedNativeControlGalleryPage;
+
+					if (nncgPage != null) {
+						AddNativeControls (nncgPage);
+					}
+				};
+			} 
+
+			LoadApplication (app);
+        }
+
+		void AddNativeControls (NestedNativeControlGalleryPage page)
+		{
+			if (page.NativeControlsAdded) {
+				return;
+			}
+
+			StackLayout sl = page.Layout;
+
+			// Create and add a native TextBlock
+			var originalText = "I am a native TextBlock";
+			var textBlock = new TextBlock {
+				Text = originalText,
+				FontSize = 14,
+				FontFamily = new FontFamily ("HelveticaNeue")
+			};
+
+			sl?.Children.Add (textBlock);
+
+			// Create and add a native Button 
+			var button = new Windows.UI.Xaml.Controls.Button { Content = "Toggle Font Size", Height = 80 };
+			button.Click += (sender, args) => { textBlock.FontSize = textBlock.FontSize == 14 ? 24 : 14; };
+
+			sl?.Children.Add (button.ToView ());
+
+			// Create a control which we know doesn't behave correctly with regard to measurement
+			var difficultControl = new BrokenNativeControl {
+				Text = "Not Sized/Arranged Properly"
+			};
+
+			var difficultControl2 = new BrokenNativeControl {
+				Text = "Fixed"
+			};
+
+			// Add the misbehaving controls, one with a custom delegate for ArrangeOverrideDelegate
+			sl?.Children.Add (difficultControl);
+			sl?.Children.Add (difficultControl2,
+				arrangeOverrideDelegate: (renderer, finalSize) => {
+					if (finalSize.Width <= 0 || double.IsInfinity (finalSize.Width)) {
+						return null;
+					}
+
+					FrameworkElement frameworkElement = renderer.Control;
+
+					frameworkElement.Measure (finalSize);
+
+					// The broken control always tries to size itself to the screen width
+					// So figure that out and we'll know how far off it's laying itself out
+					Rect bounds = ApplicationView.GetForCurrentView ().VisibleBounds;
+					double scaleFactor = DisplayInformation.GetForCurrentView ().RawPixelsPerViewPixel;
+					var screenWidth = new Size (bounds.Width * scaleFactor, bounds.Height * scaleFactor);
+					
+					// We can re-center it by offsetting it during the Arrange call
+					double diff = Math.Abs(screenWidth.Width - finalSize.Width) / -2;
+					frameworkElement.Arrange (new Rect (diff, 0, finalSize.Width - diff, finalSize.Height));
+
+					// Arranging the control to the left will make it show up past the edge of the stack layout
+					// We can fix that by clipping it manually
+					var clip = new RectangleGeometry { Rect = new Rect (-diff, 0, finalSize.Width, finalSize.Height) };
+					frameworkElement.Clip = clip;
+
+					return finalSize;
+				}
+			);
+
+			page.NativeControlsAdded = true;
+		}
+    }
+}