/// <summary>
/// If necessary initializes the keySym-to-scancode map.
/// </summary>
/// <remarks>The keySym-to-scancode map gets initialized by iterating over the
/// keyc2scan field of XplatUIX11 and then calling an X11 function to convert the
/// iterated keyCode to a keySym. This is done for the unshifted and shifted case of the
/// keycode.</remarks>
private void EnsureInitialized()
{
if (KeyMap != null)
return;
var swfAssembly = Assembly.GetAssembly(typeof(System.Windows.Forms.Form));
var xplatUIX11Type = swfAssembly.GetType("System.Windows.Forms.XplatUIX11");
var x11KeyboardInfo = xplatUIX11Type.GetField("Keyboard", BindingFlags.Static | BindingFlags.NonPublic);
Debug.Assert(x11KeyboardInfo != null, "Can't access XplatUIX11.Keyboard through reflection. Did the Mono implementation change?");
var x11KeyboardObj = x11KeyboardInfo.GetValue(null);
var keyc2scanInfo = x11KeyboardObj.GetType().GetField("keyc2scan", BindingFlags.Instance | BindingFlags.NonPublic);
Debug.Assert(keyc2scanInfo != null, "Can't access X11Keyboard.keyc2scan through reflection. Did the Mono implementation change?");
var keyc2scan = keyc2scanInfo.GetValue(x11KeyboardObj) as int[];
IntPtr display = X11Helper.GetDisplayConnection();
if (display != IntPtr.Zero && keyc2scan != null)
{
KeyMap = new Dictionary<int, int>();
for (int keyCode = 0; keyCode < keyc2scan.Length; keyCode++)
{
var scanCode = keyc2scan[keyCode];
for (int shifted = 0; shifted <= 1; shifted++)
{
var keySym = X11.Unmanaged.XKeycodeToKeysym(display, keyCode, shifted);
if (!KeyMap.ContainsKey(keySym))
KeyMap.Add(keySym, scanCode);
}
}
}
}
public static SwappableNativeWindowBase CreateOpenGLWindow(FramebufferFormat format, int x, int y, int width, int height)
{
if (OperatingSystem.IsLinux())
{
// TODO: detect X11/Wayland/DRI
return(X11Helper.CreateGLXWindow(new NativeHandle(X11.X11.DefaultDisplay), format, x, y, width, height));
}
else if (OperatingSystem.IsWindows())
{
// TODO pass format
return(Win32Helper.CreateWindowForWGL(x, y, width, height));
}
throw new NotImplementedException();
}
public static NativeWindowBase CreateWindow(FramebufferFormat format, int x, int y, int width, int height)
{
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux))
{
// TODO: detect X11/Wayland/DRI
return(X11Helper.CreateGLXWindow(new NativeHandle(X11.X11.DefaultDisplay), format, x, y, width, height));
}
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
// TODO pass format
return(Win32Helper.CreateWindowForWGL(x, y, width, height));
}
throw new NotImplementedException();
}
public XklEngine() : this(X11Helper.GetDisplayConnection())
{
}