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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 SPB.Windowing;
using System;
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 class EmbeddedWindow : NativeControlHost
{
private WindowProc _wndProcDelegate;
private string _className;
protected GLXWindow X11Window { get; 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")]
protected virtual 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")]
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")]
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));
}
}
}
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