From 83d889c3fce0a0744120be7102ecd41fc45eaf75 Mon Sep 17 00:00:00 2001
From: Bastian Schmidt <batzen@gmx.org>
Date: Fri, 18 Aug 2017 23:08:04 +0200
Subject: [PATCH] Fixes #454 by forcing Measure and Arrange with the current
 window size

---
 Changelog.md                           |  1 +
 Fluent.Ribbon/Controls/RibbonWindow.cs | 18 +++++++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/Changelog.md b/Changelog.md
index 9f9f409ca..c47e3e132 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -146,6 +146,7 @@
   - [#439](../../issues/439) - Context menu and submenu disappears after a right click
   - [#446](../../issues/446) - Wrong submenu Position in application menu
   - [#450](../../issues/450) - Fix Ribbon.OnTitleBarChanged clearing the new title bar instead of the old one (thanks @Cubey2019)
+  - [#454](../../issues/454) - RibbonWindow title not shown in correct position when using SizeToContent
   - [#457](../../issues/457) - Using the keytip shortcut to open a backstage briefly opens it, then closes it immediately
   - [#459](../../issues/459) - Label of the Spinner disappears, if there isn't enough place
 
diff --git a/Fluent.Ribbon/Controls/RibbonWindow.cs b/Fluent.Ribbon/Controls/RibbonWindow.cs
index a415e7d1e..5bd58ade9 100644
--- a/Fluent.Ribbon/Controls/RibbonWindow.cs
+++ b/Fluent.Ribbon/Controls/RibbonWindow.cs
@@ -228,9 +228,10 @@ static RibbonWindow()
         public RibbonWindow()
         {
             this.SizeChanged += this.OnSizeChanged;
+            this.Loaded += this.OnLoaded;
 
             // WindowChromeBehavior initialization has to occur in constructor. Otherwise the load event is fired early and performance of the window is degraded.
-            this.InitializeWindowChromeBehavior();
+            this.InitializeWindowChromeBehavior();            
         }
 
         #endregion
@@ -258,6 +259,21 @@ private void OnSizeChanged(object sender, SizeChangedEventArgs e)
             this.MaintainIsCollapsed();
         }
 
+        private void OnLoaded(object sender, RoutedEventArgs e)
+        {
+            if (this.SizeToContent == SizeToContent.Manual)
+            {
+                return;
+            }
+
+            this.RunInDispatcherAsync(() =>
+                                      {
+                                          var availableSize = new Size(this.ActualWidth, this.ActualHeight);
+                                          this.Measure(availableSize);
+                                          this.Arrange(new Rect(default(Point), availableSize));
+                                      }, DispatcherPriority.ApplicationIdle);
+        }
+
         private void MaintainIsCollapsed()
         {
             if (this.IsAutomaticCollapseEnabled == false)