1 files changed, 204 insertions, 0 deletions
diff --git a/Ryujinx.Ava/Ui/Controls/EmbeddedWindow.cs b/Ryujinx.Ava/Ui/Controls/EmbeddedWindow.cs
new file mode 100644
index 00000000..d9fae93a
--- /dev/null
+++ b/Ryujinx.Ava/Ui/Controls/EmbeddedWindow.cs
@@ -0,0 +1,204 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Input;
+using Avalonia.Platform;
+using SPB.Graphics;
+using SPB.Platform;
+using SPB.Platform.GLX;
+using SPB.Platform.X11;
+using System;
+using System.Reflection;
+using System.Runtime.InteropServices;
+using System.Runtime.Versioning;
+using System.Threading.Tasks;
+using static Ryujinx.Ava.Ui.Controls.Win32NativeInterop;
+
+namespace Ryujinx.Ava.Ui.Controls
+{
+    public unsafe class EmbeddedWindow : NativeControlHost
+    {
+        private WindowProc _wndProcDelegate;
+        private string _className;
+
+        protected GLXWindow X11Window { get; private set; }
+        protected IntPtr WindowHandle { get; set; }
+        protected IntPtr X11Display { get; set; }
+
+        public event EventHandler<IntPtr> WindowCreated;
+        public event EventHandler<Size> SizeChanged;
+
+        protected virtual void OnWindowDestroyed() { }
+        protected virtual void OnWindowDestroying()
+        {
+            WindowHandle = IntPtr.Zero;
+            X11Display = IntPtr.Zero;
+        }
+
+        public EmbeddedWindow()
+        {
+            var stateObserverable = this.GetObservable(Control.BoundsProperty);
+
+            stateObserverable.Subscribe(StateChanged);
+
+            this.Initialized += NativeEmbeddedWindow_Initialized;
+        }
+
+        public virtual void OnWindowCreated() { }
+
+        private void NativeEmbeddedWindow_Initialized(object sender, EventArgs e)
+        {
+            OnWindowCreated();
+
+            Task.Run(() =>
+            {
+                WindowCreated?.Invoke(this, WindowHandle);
+            });
+        }
+
+        private void StateChanged(Rect rect)
+        {
+            SizeChanged?.Invoke(this, rect.Size);
+        }
+
+        protected override IPlatformHandle CreateNativeControlCore(IPlatformHandle parent)
+        {
+            if (OperatingSystem.IsLinux())
+            {
+                return CreateLinux(parent);
+            }
+            else if (OperatingSystem.IsWindows())
+            {
+                return CreateWin32(parent);
+            }
+            return base.CreateNativeControlCore(parent);
+        }
+
+        protected override void DestroyNativeControlCore(IPlatformHandle control)
+        {
+            OnWindowDestroying();
+
+            if (OperatingSystem.IsLinux())
+            {
+                DestroyLinux();
+            }
+            else if (OperatingSystem.IsWindows())
+            {
+                DestroyWin32(control);
+            }
+            else
+            {
+                base.DestroyNativeControlCore(control);
+            }
+
+            OnWindowDestroyed();
+        }
+
+        [SupportedOSPlatform("linux")]
+        IPlatformHandle CreateLinux(IPlatformHandle parent)
+        {
+            X11Window = PlatformHelper.CreateOpenGLWindow(FramebufferFormat.Default, 0, 0, 100, 100) as GLXWindow;
+
+            WindowHandle = X11Window.WindowHandle.RawHandle;
+
+            X11Display = X11Window.DisplayHandle.RawHandle;
+
+            return new PlatformHandle(WindowHandle, "X11");
+        }
+
+        [SupportedOSPlatform("windows")]
+        unsafe IPlatformHandle CreateWin32(IPlatformHandle parent)
+        {
+            _className = "NativeWindow-" + Guid.NewGuid();
+            _wndProcDelegate = WndProc;
+            var wndClassEx = new WNDCLASSEX
+            {
+                cbSize = Marshal.SizeOf<WNDCLASSEX>(),
+                hInstance = GetModuleHandle(null),
+                lpfnWndProc = _wndProcDelegate,
+                style = ClassStyles.CS_OWNDC,
+                lpszClassName = _className,
+                hCursor = LoadCursor(IntPtr.Zero, (IntPtr)Cursors.IDC_ARROW)
+            };
+
+            var atom = RegisterClassEx(ref wndClassEx);
+
+            var handle = CreateWindowEx(
+                0,
+                _className,
+                "NativeWindow",
+                WindowStyles.WS_CHILD,
+                0,
+                0,
+                640,
+                480,
+                parent.Handle,
+                IntPtr.Zero,
+                IntPtr.Zero,
+                IntPtr.Zero);
+
+            WindowHandle = handle;
+
+            return new PlatformHandle(WindowHandle, "HWND");
+        }
+
+        [SupportedOSPlatform("windows")]
+        internal IntPtr WndProc(IntPtr hWnd, WindowsMessages msg, IntPtr wParam, IntPtr lParam)
+        {
+            var point = new Point((long)lParam & 0xFFFF, ((long)lParam >> 16) & 0xFFFF);
+            var root = VisualRoot as Window;
+            bool isLeft = false;
+            switch (msg)
+            {
+                case WindowsMessages.LBUTTONDOWN:
+                case WindowsMessages.RBUTTONDOWN:
+                    isLeft = msg == WindowsMessages.LBUTTONDOWN;
+                    this.RaiseEvent(new PointerPressedEventArgs(
+                        this,
+                        new Avalonia.Input.Pointer(0, PointerType.Mouse, true),
+                        root,
+                        this.TranslatePoint(point, root).Value,
+                        (ulong)Environment.TickCount64,
+                        new PointerPointProperties(isLeft ? RawInputModifiers.LeftMouseButton : RawInputModifiers.RightMouseButton, isLeft ? PointerUpdateKind.LeftButtonPressed : PointerUpdateKind.RightButtonPressed),
+                        KeyModifiers.None));
+                    break;
+                case WindowsMessages.LBUTTONUP:
+                case WindowsMessages.RBUTTONUP:
+                    isLeft = msg == WindowsMessages.LBUTTONUP;
+                    this.RaiseEvent(new PointerReleasedEventArgs(
+                        this,
+                        new Avalonia.Input.Pointer(0, PointerType.Mouse, true),
+                        root,
+                        this.TranslatePoint(point, root).Value,
+                        (ulong)Environment.TickCount64,
+                        new PointerPointProperties(isLeft ? RawInputModifiers.LeftMouseButton : RawInputModifiers.RightMouseButton, isLeft ? PointerUpdateKind.LeftButtonReleased : PointerUpdateKind.RightButtonReleased),
+                        KeyModifiers.None,
+                        isLeft ? MouseButton.Left : MouseButton.Right));
+                    break;
+                case WindowsMessages.MOUSEMOVE:
+                    this.RaiseEvent(new PointerEventArgs(
+                        PointerMovedEvent,
+                        this,
+                        new Avalonia.Input.Pointer(0, PointerType.Mouse, true),
+                        root,
+                        this.TranslatePoint(point, root).Value,
+                        (ulong)Environment.TickCount64,
+                        new PointerPointProperties(RawInputModifiers.None, PointerUpdateKind.Other),
+                        KeyModifiers.None));
+                    break;
+            }
+            return DefWindowProc(hWnd, msg, (IntPtr)wParam, (IntPtr)lParam);
+        }
+
+        void DestroyLinux()
+        {
+            X11Window?.Dispose();
+        }
+
+        [SupportedOSPlatform("windows")]
+        void DestroyWin32(IPlatformHandle handle)
+        {
+            DestroyWindow(handle.Handle);
+            UnregisterClass(_className, GetModuleHandle(null));
+        }
+    }
+}
+\ No newline at end of file