[GUI] Fixes click the controller B/O close button to close the game

src/SharpEmu.GUI/MainWindow.axaml.cs

@@ -92,6 +92,11 @@ public partial class MainWindow : Window
     // plain window color remains the fallback when the asset fails to load.
     private Bitmap? _defaultBackdrop;
 
+    // Whether the native loading/closing popup should be showing; it is a
+    // desktop-topmost popup, so it closes while the launcher is in the
+    // background or minimized and reopens from this flag on activation.
+    private bool _sessionLoadingActive;
+
     // Controller navigation state.
     private readonly DispatcherTimer _gamepadTimer;
     private HostGamepadButtons _previousPadButtons;
@@ -150,8 +155,18 @@ public partial class MainWindow : Window
         };
         _libraryBlurTimer.Tick += (_, _) => AdvanceLibraryBlur();
 
-        Activated += (_, _) => UpdateSessionBarVisibility();
+        // Native popups float above every window on the desktop; they must
-        Deactivated += (_, _) => SessionBarPopup.IsOpen = false;
+        // follow the launcher into the background or a minimized state.
+        Activated += (_, _) =>
+        {
+            UpdateSessionBarVisibility();
+            SessionLoadingPopup.IsOpen = _sessionLoadingActive;
+        };
+        Deactivated += (_, _) =>
+        {
+            SessionBarPopup.IsOpen = false;
+            SessionLoadingPopup.IsOpen = false;
+        };
 
         TitleBar.PointerPressed += OnTitleBarPointerPressed;
         GameList.SelectionChanged += (_, _) => UpdateSelectedGame();
@@ -414,6 +429,15 @@ public partial class MainWindow : Window
             return;
         }
 
+        if (_isRunning || _isStopping)
+        {
+            // The game renders inside the launcher window, so the launcher
+            // stays active while playing. The controller belongs to the game
+            // then: no navigation, and Circle/B must never stop the session.
+            _previousPadButtons = pad.Buttons;
+            return;
+        }
+
         var shoulderPressed = pad.Buttons & ~_previousPadButtons;
         if ((shoulderPressed & HostGamepadButtons.L1) != 0)
         {
@@ -463,11 +487,6 @@ public partial class MainWindow : Window
             LaunchSelected();
         }
 
-        if ((pressed & HostGamepadButtons.Circle) != 0)
-        {
-            StopEmulator();
-        }
-
         _previousPadButtons = pad.Buttons;
     }
 
@@ -1626,13 +1645,23 @@ public partial class MainWindow : Window
         base.OnPropertyChanged(change);
         if (change.Property == WindowStateProperty)
         {
+            // The XAML WindowState="Maximized" assignment raises this change
+            // during InitializeComponent, before named controls are wired up.
             if (WindowState == WindowState.Minimized)
             {
                 _sndPreview.Pause();
+                if (SessionLoadingPopup is { } popup)
+                {
+                    popup.IsOpen = false;
+                }
             }
             else
             {
                 _sndPreview.Resume();
+                if (SessionLoadingPopup is { } popup)
+                {
+                    popup.IsOpen = _sessionLoadingActive;
+                }
             }
         }
     }
@@ -2009,7 +2038,7 @@ public partial class MainWindow : Window
                 ContentToolbar.IsVisible = false;
                 ConsolePanel.IsVisible = false;
                 LaunchBar.IsVisible = false;
-                SessionLoadingPopup.IsOpen = false;
+                HideSessionLoading();
                 UpdateSessionBarVisibility();
             }
         });
@@ -2109,7 +2138,7 @@ public partial class MainWindow : Window
         GameView.IsVisible = false;
         GameView.IsHitTestVisible = true;
         SessionBarPopup.IsOpen = false;
-        SessionLoadingPopup.IsOpen = false;
+        HideSessionLoading();
         AnimateLibraryBlur(0, clearWhenComplete: true);
         MainContent.Margin = new Thickness(32, 24, 32, 20);
         ContentToolbar.IsVisible = true;
@@ -2193,7 +2222,14 @@ public partial class MainWindow : Window
     {
         SessionLoadingTitle.Text = title;
         SessionLoadingDetail.Text = detail;
-        SessionLoadingPopup.IsOpen = true;
+        _sessionLoadingActive = true;
+        SessionLoadingPopup.IsOpen = IsActive && WindowState != WindowState.Minimized;
+    }
+
+    private void HideSessionLoading()
+    {
+        _sessionLoadingActive = false;
+        SessionLoadingPopup.IsOpen = false;
     }
 
     private void ReturnToLibraryWhileStopping()

src/SharpEmu.Libs/Random/RandomExports.cs

@@ -1,39 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using System.Security.Cryptography;
-using SharpEmu.HLE;
-
-namespace SharpEmu.Libs.Random;
-
-public static class RandomExports
-{
-    private const int RandomErrorInvalid = unchecked((int)0x817C0016);
-    private const int MaxRandomBytes = 64;
-
-    [SysAbiExport(
-        Nid = "PI7jIZj4pcE",
-        ExportName = "sceRandomGetRandomNumber",
-        Target = Generation.Gen4 | Generation.Gen5,
-        LibraryName = "libSceRandom")]
-    public static int RandomGetRandomNumber(CpuContext ctx)
-    {
-        var destination = ctx[CpuRegister.Rdi];
-        var size = ctx[CpuRegister.Rsi];
-        if ((destination == 0 && size != 0) || size > MaxRandomBytes)
-        {
-            return ctx.SetReturn(RandomErrorInvalid);
-        }
-
-        if (size == 0)
-        {
-            return ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK);
-        }
-
-        Span<byte> bytes = stackalloc byte[(int)size];
-        RandomNumberGenerator.Fill(bytes);
-        return ctx.Memory.TryWrite(destination, bytes)
-            ? ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_OK)
-            : ctx.SetReturn(OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT);
-    }
-}

tests/SharpEmu.Libs.Tests/Random/RandomExportsTests.cs

@@ -1,69 +0,0 @@
-// Copyright (C) 2026 SharpEmu Emulator Project
-// SPDX-License-Identifier: GPL-2.0-or-later
-
-using SharpEmu.HLE;
-using SharpEmu.Libs.Random;
-using Xunit;
-
-namespace SharpEmu.Libs.Tests.Random;
-
-public sealed class RandomExportsTests
-{
-    private const ulong BaseAddress = 0x1000;
-    private const int RandomErrorInvalid = unchecked((int)0x817C0016);
-
-    [Fact]
-    public void GetRandomNumberWritesRequestedBytes()
-    {
-        var memory = new FakeCpuMemory(BaseAddress, 64);
-        var ctx = CreateContext(memory, BaseAddress, 64);
-
-        Assert.Equal(0, RandomExports.RandomGetRandomNumber(ctx));
-
-        var bytes = new byte[64];
-        Assert.True(memory.TryRead(BaseAddress, bytes));
-        Assert.NotEqual(new byte[64], bytes);
-    }
-
-    [Theory]
-    [InlineData(0, 1)]
-    [InlineData(BaseAddress, 65)]
-    public void GetRandomNumberRejectsInvalidArguments(ulong address, ulong size)
-    {
-        var memory = new FakeCpuMemory(BaseAddress, 64);
-        var ctx = CreateContext(memory, address, size);
-
-        Assert.Equal(RandomErrorInvalid, RandomExports.RandomGetRandomNumber(ctx));
-    }
-
-    [Fact]
-    public void GetRandomNumberAcceptsEmptyRequest()
-    {
-        var memory = new FakeCpuMemory(BaseAddress, 64);
-        var ctx = CreateContext(memory, 0, 0);
-
-        Assert.Equal(0, RandomExports.RandomGetRandomNumber(ctx));
-    }
-
-    [Fact]
-    public void GetRandomNumberReportsUnmappedDestination()
-    {
-        var memory = new FakeCpuMemory(BaseAddress, 64);
-        var ctx = CreateContext(memory, BaseAddress + 64, 1);
-
-        Assert.Equal(
-            (int)OrbisGen2Result.ORBIS_GEN2_ERROR_MEMORY_FAULT,
-            RandomExports.RandomGetRandomNumber(ctx));
-    }
-
-    private static CpuContext CreateContext(
-        ICpuMemory memory,
-        ulong destination,
-        ulong size)
-    {
-        var ctx = new CpuContext(memory, Generation.Gen5);
-        ctx[CpuRegister.Rdi] = destination;
-        ctx[CpuRegister.Rsi] = size;
-        return ctx;
-    }
-}