UI: Add keybinds to useful things

src/Ryujinx/UI/Windows/MainWindow.axaml.cs

@@ -38,7 +38,7 @@ namespace Ryujinx.Ava.UI.Windows
     public partial class MainWindow : StyleableWindow
     {
         internal static MainWindowViewModel MainWindowViewModel { get; private set; }
-
+        
         private bool _isLoading;
         private bool _applicationsLoadedOnce;
 
@@ -67,9 +67,20 @@ namespace Ryujinx.Ava.UI.Windows
         public readonly double StatusBarHeight;
         public readonly double MenuBarHeight;
 
+        // The special window decoration from AppWindow in FluentAvalonia is only present on Windows;
+        // and as such optimizing for the fact that the menu bar and the title bar are the same is only needed on Windows.
+        // Maximized is considered superior to FullScreen on Windows in this case because you get the benefits of being in full screen,
+        // while still being able to use the standard 3 window controls in the top right to minimize, make the window smaller, or close the app.
+
+        public static readonly WindowState FullScreenWindowState =
+            OperatingSystem.IsWindows() ? WindowState.Maximized : WindowState.FullScreen;
+
         public MainWindow()
         {
-            ViewModel = new MainWindowViewModel();
+            DataContext = ViewModel = new MainWindowViewModel
+            {
+                Window = this
+            };
 
             MainWindowViewModel = ViewModel;
 
@@ -220,7 +231,7 @@ namespace Ryujinx.Ava.UI.Windows
             ViewModel.ShowContent = true;
             ViewModel.IsLoadingIndeterminate = false;
 
-            if (startFullscreen && ViewModel.WindowState != WindowState.FullScreen)
+            if (startFullscreen && ViewModel.WindowState != MainWindow.FullScreenWindowState)
             {
                 ViewModel.ToggleFullscreen();
             }
@@ -232,7 +243,7 @@ namespace Ryujinx.Ava.UI.Windows
             ViewModel.ShowLoadProgress = true;
             ViewModel.IsLoadingIndeterminate = true;
 
-            if (startFullscreen && ViewModel.WindowState != WindowState.FullScreen)
+            if (startFullscreen && ViewModel.WindowState != MainWindow.FullScreenWindowState)
             {
                 ViewModel.ToggleFullscreen();
             }