/// <inheritdoc />
protected override void OnTextInput(TextInputEventArgs e)
{
base.OnTextInput(e);
if (e.Handled)
{
return;
}
// Get connection
RfbConnection?connection = Connection;
if (connection == null)
{
return;
}
// Send chars one by one
foreach (char c in e.Text)
{
KeySymbol keySymbol = KeyMapping.GetSymbolFromChar(c);
// Press and release key
if (!connection.EnqueueMessage(new KeyEventMessage(true, keySymbol)))
{
break;
}
connection.EnqueueMessage(new KeyEventMessage(false, keySymbol));
}
e.Handled = true;
}
private bool HandleKeyEvent(bool downFlag, Key key, KeyModifiers keyModifiers)
{
// Get connection
RfbConnection?connection = Connection;
if (connection == null)
{
return(false);
}
// Might this key be part of a shortcut? When modifies are present, OnTextInput doesn't get called,
// so we have to handle printable characters here now, too.
bool includePrintable = (keyModifiers & KeyModifiers.Control) != 0;
// Get key symbol
KeySymbol keySymbol = KeyMapping.GetSymbolFromKey(key, includePrintable);
if (keySymbol == KeySymbol.Null)
{
return(false);
}
// Send key event to server
bool queued = connection.EnqueueMessage(new KeyEventMessage(downFlag, keySymbol));
if (downFlag && queued)
{
_pressedKeys.Add(keySymbol);
}
else if (!downFlag)
{
_pressedKeys.Remove(keySymbol);
}
return(queued);
}
/// <summary>
/// Maps an Avalonia <see cref="Key"/> to a <see cref="KeySymbol"/>.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="includePrintable">True, if printable chars should be included in the mapping, false otherwise.</param>
/// <returns>The X key symbol.</returns>
public static KeySymbol GetSymbolFromKey(Key key, bool includePrintable = true)
{
KeySymbol keySymbol = key switch {
Key.Cancel => KeySymbol.Cancel,
Key.Back => KeySymbol.BackSpace,
Key.Tab => KeySymbol.Tab,
Key.LineFeed => KeySymbol.Linefeed,
Key.Clear => KeySymbol.Clear,
Key.Return => KeySymbol.Return,
Key.Pause => KeySymbol.Pause,
Key.CapsLock => KeySymbol.Caps_Lock,
Key.Escape => KeySymbol.Escape,
Key.Prior => KeySymbol.Prior,
Key.PageDown => KeySymbol.Page_Down,
Key.End => KeySymbol.End,
Key.Home => KeySymbol.Home,
Key.Left => KeySymbol.Left,
Key.Up => KeySymbol.Up,
Key.Right => KeySymbol.Right,
Key.Down => KeySymbol.Down,
Key.Select => KeySymbol.Select,
Key.Print => KeySymbol.Print,
Key.Execute => KeySymbol.Execute,
Key.Insert => KeySymbol.Insert,
Key.Delete => KeySymbol.Delete,
Key.Help => KeySymbol.Help,
Key.LWin => KeySymbol.Super_L,
Key.RWin => KeySymbol.Super_R,
Key.Apps => KeySymbol.Menu,
Key.F1 => KeySymbol.F1,
Key.F2 => KeySymbol.F2,
Key.F3 => KeySymbol.F3,
Key.F4 => KeySymbol.F4,
Key.F5 => KeySymbol.F5,
Key.F6 => KeySymbol.F6,
Key.F7 => KeySymbol.F7,
Key.F8 => KeySymbol.F8,
Key.F9 => KeySymbol.F9,
Key.F10 => KeySymbol.F10,
Key.F11 => KeySymbol.F11,
Key.F12 => KeySymbol.F12,
Key.F13 => KeySymbol.F13,
Key.F14 => KeySymbol.F14,
Key.F15 => KeySymbol.F15,
Key.F16 => KeySymbol.F16,
Key.F17 => KeySymbol.F17,
Key.F18 => KeySymbol.F18,
Key.F19 => KeySymbol.F19,
Key.F20 => KeySymbol.F20,
Key.F21 => KeySymbol.F21,
Key.F22 => KeySymbol.F22,
Key.F23 => KeySymbol.F23,
Key.F24 => KeySymbol.F24,
Key.NumLock => KeySymbol.Num_Lock,
Key.Scroll => KeySymbol.Scroll_Lock,
Key.LeftShift => KeySymbol.Shift_L,
Key.RightShift => KeySymbol.Shift_R,
Key.LeftCtrl => KeySymbol.Control_L,
Key.RightCtrl => KeySymbol.Control_R,
Key.LeftAlt => KeySymbol.Alt_L,
Key.RightAlt => KeySymbol.Alt_R,
var _ => KeySymbol.Null
};
if (keySymbol == KeySymbol.Null && includePrintable)
{
keySymbol = key switch {
Key.Space => KeySymbol.space,
Key.A => KeySymbol.a,
Key.B => KeySymbol.b,
Key.C => KeySymbol.c,
Key.D => KeySymbol.d,
Key.E => KeySymbol.e,
Key.F => KeySymbol.f,
Key.G => KeySymbol.g,
Key.H => KeySymbol.h,
Key.I => KeySymbol.i,
Key.J => KeySymbol.j,
Key.K => KeySymbol.k,
Key.L => KeySymbol.l,
Key.M => KeySymbol.m,
Key.N => KeySymbol.n,
Key.O => KeySymbol.o,
Key.P => KeySymbol.p,
Key.Q => KeySymbol.q,
Key.R => KeySymbol.r,
Key.S => KeySymbol.s,
Key.T => KeySymbol.t,
Key.U => KeySymbol.u,
Key.V => KeySymbol.v,
Key.W => KeySymbol.w,
Key.X => KeySymbol.x,
Key.Y => KeySymbol.y,
Key.Z => KeySymbol.z,
Key.NumPad0 => KeySymbol.KP_0,
Key.NumPad1 => KeySymbol.KP_1,
Key.NumPad2 => KeySymbol.KP_2,
Key.NumPad3 => KeySymbol.KP_3,
Key.NumPad4 => KeySymbol.KP_4,
Key.NumPad5 => KeySymbol.KP_5,
Key.NumPad6 => KeySymbol.KP_6,
Key.NumPad7 => KeySymbol.KP_7,
Key.NumPad8 => KeySymbol.KP_8,
Key.NumPad9 => KeySymbol.KP_9,
Key.Multiply => KeySymbol.KP_Multiply,
Key.Add => KeySymbol.KP_Add,
Key.Subtract => KeySymbol.KP_Subtract,
Key.Decimal => KeySymbol.KP_Decimal,
Key.Divide => KeySymbol.KP_Divide,
Key.D1 => KeySymbol.XK_1,
Key.D2 => KeySymbol.XK_2,
Key.D3 => KeySymbol.XK_3,
Key.D4 => KeySymbol.XK_4,
Key.D5 => KeySymbol.XK_5,
Key.D6 => KeySymbol.XK_6,
Key.D7 => KeySymbol.XK_7,
Key.D8 => KeySymbol.XK_8,
Key.D9 => KeySymbol.XK_9,
Key.D0 => KeySymbol.XK_0,
var _ => KeySymbol.Null
};
}
return(keySymbol);
}