TabStrip rendering again now at least.

Perspex.Controls.UnitTests/ContentControlTests.cs

@@ -144,14 +144,16 @@ namespace Perspex.Controls.UnitTests
 
         private ControlTemplate GetTemplate()
         {
-            return new ControlTemplate(parent =>
+            return ControlTemplate.Create<ContentControl>(parent =>
             {
-                Border border = new Border();
-                border.Background = new Perspex.Media.SolidColorBrush(0xffffffff);
-                ContentPresenter contentPresenter = new ContentPresenter();
-                ////contentPresenter[~ContentPresenter.ContentProperty] = parent[~ContentPresenter.ContentProperty];
-                border.Content = contentPresenter;
-                return border;
+                return new Border
+                {
+                    Background = new Perspex.Media.SolidColorBrush(0xffffffff),
+                    Content = new ContentPresenter
+                    {
+                        [~ContentPresenter.ContentProperty] = parent[~ContentControl.ContentProperty],
+                    }
+                };
             });
         }
     }

Perspex.Controls.UnitTests/ControlTests.cs

@@ -6,11 +6,13 @@
 
 namespace Perspex.Controls.UnitTests
 {
+    using System;
     using System.Linq;
     using Microsoft.VisualStudio.TestTools.UnitTesting;
     using Moq;
     using Perspex.Controls;
     using Perspex.Layout;
+    using Perspex.Rendering;
     using Perspex.Styling;
     using Splat;
 
@@ -26,7 +28,7 @@ namespace Perspex.Controls.UnitTests
         }
 
         [TestMethod]
-        public void Adding_Control_To_ILayoutRoot_Should_Style_Control()
+        public void Adding_Control_To_IRenderRoot_Should_Style_Control()
         {
             using (Locator.CurrentMutable.WithResolver())
             {
@@ -68,7 +70,7 @@ namespace Perspex.Controls.UnitTests
             }
         }
 
-        private class TestRoot : Decorator, ILayoutRoot
+        private class TestRoot : Decorator, ILayoutRoot, IRenderRoot
         {
             public Size ClientSize
             {
@@ -79,6 +81,11 @@ namespace Perspex.Controls.UnitTests
             {
                 get { throw new System.NotImplementedException(); }
             }
+
+            public IRenderManager RenderManager
+            {
+                get { throw new NotImplementedException(); }
+            }
         }
     }
 }

Perspex.Controls/ItemsPresenter.cs

@@ -52,6 +52,11 @@ namespace Perspex.Controls
             return finalSize;
         }
 
+        protected override IEnumerable<Visual> CreateVisualChildren()
+        {
+            return Enumerable.Repeat(this.GetPanel(), 1);
+        }
+
         private Control CreateItemControl(object item)
         {
             ItemsControl i = this.TemplatedParent as ItemsControl;

Perspex.Direct2D1/Direct2D1Platform.cs

@@ -28,6 +28,7 @@ namespace Perspex.Direct2D1
         {
             var locator = Locator.CurrentMutable;
             locator.Register(() => instance, typeof(IPlatformRenderInterface));
+            locator.Register(() => textService, typeof(ITextService));
             locator.Register(() => d2d1Factory, typeof(SharpDX.Direct2D1.Factory));
             locator.Register(() => dwFactory, typeof(SharpDX.DirectWrite.Factory));
             locator.Register(() => imagingFactory, typeof(SharpDX.WIC.ImagingFactory));

Perspex.SceneGraph.UnitTests/TestVisual.cs

@@ -22,6 +22,11 @@ namespace Perspex.SceneGraph.UnitTests
 
     public class TestVisual : Visual
     {
+        public new PerspexObject InheritanceParent
+        {
+            get { return base.InheritanceParent; }
+        }
+
         public Visual[] InitialChildren { get; set; }
 
         public event EventHandler<ParamEventArgs<Visual>> VisualParentChangedCalled;

Perspex.SceneGraph.UnitTests/VisualTests.cs

@@ -49,6 +49,17 @@ namespace Perspex.SceneGraph.UnitTests
             Assert.AreEqual(target, child.GetVisualParent());
         }
 
+        [TestMethod]
+        public void Added_Child_Should_Have_InheritanceParent_Set()
+        {
+            var target = new TestVisual();
+            var child = new TestVisual();
+
+            target.AddChild(child);
+
+            Assert.AreEqual(target, child.InheritanceParent);
+        }
+
         [TestMethod]
         public void Removed_Child_Should_Have_VisualParent_Cleared()
         {
@@ -61,6 +72,18 @@ namespace Perspex.SceneGraph.UnitTests
             Assert.IsNull(child.GetVisualParent());
         }
 
+        [TestMethod]
+        public void Removed_Child_Should_Have_InheritanceParent_Cleared()
+        {
+            var target = new TestVisual();
+            var child = new TestVisual();
+
+            target.AddChild(child);
+            target.RemoveChild(child);
+
+            Assert.IsNull(child.InheritanceParent);
+        }
+
         [TestMethod]
         public void Clearing_Children_Should_Clear_VisualParent()
         {

Perspex.SceneGraph/Rendering/IRenderManager.cs

@@ -14,5 +14,7 @@ namespace Perspex.Rendering
         IObservable<Unit> RenderNeeded { get; }
 
         void InvalidateRender(IVisual visual);
+
+        void RenderFinished();
     }
 }

Perspex.SceneGraph/Visual.cs

@@ -214,6 +214,7 @@ namespace Perspex
                 case NotifyCollectionChangedAction.Add:
                     foreach (Visual v in e.NewItems)
                     {
+                        v.InheritanceParent = this;
                         v.SetVisualParent(this);
                     }
                     break;
@@ -221,6 +222,7 @@ namespace Perspex
                 case NotifyCollectionChangedAction.Remove:
                     foreach (Visual v in e.OldItems)
                     {
+                        v.InheritanceParent = null;
                         v.SetVisualParent(null);
                     }
                     break;

Perspex.Windows/Window.cs

@@ -35,8 +35,6 @@ namespace Perspex.Windows
 
         private bool layoutPending;
 
-        private bool renderPending;
-
         public Window()
         {
             IPlatformRenderInterface factory = Locator.Current.GetService<IPlatformRenderInterface>();
@@ -62,20 +60,15 @@ namespace Perspex.Windows
                     });
             });
 
-            this.RenderManager.RenderNeeded.Where(_ => !layoutPending && !renderPending)
+            this.RenderManager.RenderNeeded.Where(_ => !layoutPending)
                 .Subscribe(x =>
             {
-                this.renderPending = true;
                 WindowsDispatcher.CurrentDispatcher.BeginInvoke(
                     DispatcherPriority.Render,
                     () =>
                     {
-                        if (!this.layoutPending)
-                        {
-                            this.renderer.Render(this);
-                        }
-
-                        this.renderPending = false;
+                        this.renderer.Render(this);
+                        this.RenderManager.RenderFinished();
                     });
             });
         }

TestApplication/Program.cs

@@ -218,6 +218,8 @@ namespace TestApplication
                 }
             };
 
+            System.Console.Write(Perspex.Diagnostics.Debug.PrintVisualTree(window));
+
             ////var treeView = window.FindControl<TreeView>("treeView");
             ////var newTreeViewItemText = window.FindControl<TextBox>("newTreeViewItemText");
             ////var addTreeViewItem = window.FindControl<Button>("addTreeViewItem");

TestApplication/TestApplication.csproj

@@ -98,6 +98,10 @@
       <Project>{d2221c82-4a25-4583-9b43-d791e3f6820c}</Project>
       <Name>Perspex.Controls</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Perspex.Diagnostics\Perspex.Diagnostics.csproj">
+      <Project>{7062ae20-5dcc-4442-9645-8195bdece63e}</Project>
+      <Name>Perspex.Diagnostics</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Perspex.Direct2D1\Perspex.Direct2D1.csproj">
       <Project>{3e908f67-5543-4879-a1dc-08eace79b3cd}</Project>
       <Name>Perspex.Direct2D1</Name>