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A cross-platform UI framework for .NET
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Avalonia/src/Avalonia.Base/Input/PhysicalKeyExtensions.cs

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namespace Avalonia.Input;
/// <summary>
/// Contains extension methods related to <see cref="PhysicalKey"/>.
/// </summary>
public static class PhysicalKeyExtensions
{
/// <summary>
/// Maps a physical key to a corresponding key, if possible, on a QWERTY keyboard.
/// </summary>
/// <param name="physicalKey">the physical key to map.</param>
/// <returns>The key corresponding to <paramref name="physicalKey"/>, or <see cref="Key.None"/>.</returns>
public static Key ToQwertyKey(this PhysicalKey physicalKey)
=> physicalKey switch
{
PhysicalKey.None => Key.None,
// Writing System Keys
PhysicalKey.Backquote => Key.Oem3,
PhysicalKey.Backslash => Key.Oem5,
PhysicalKey.BracketLeft => Key.Oem4,
PhysicalKey.BracketRight => Key.Oem6,
PhysicalKey.Comma => Key.OemComma,
PhysicalKey.Digit0 => Key.D0,
PhysicalKey.Digit1 => Key.D1,
PhysicalKey.Digit2 => Key.D2,
PhysicalKey.Digit3 => Key.D3,
PhysicalKey.Digit4 => Key.D4,
PhysicalKey.Digit5 => Key.D5,
PhysicalKey.Digit6 => Key.D6,
PhysicalKey.Digit7 => Key.D7,
PhysicalKey.Digit8 => Key.D8,
PhysicalKey.Digit9 => Key.D9,
PhysicalKey.Equal => Key.OemPlus,
PhysicalKey.IntlBackslash => Key.Oem102,
PhysicalKey.IntlRo => Key.Oem102,
PhysicalKey.IntlYen => Key.Oem5,
PhysicalKey.A => Key.A,
PhysicalKey.B => Key.B,
PhysicalKey.C => Key.C,
PhysicalKey.D => Key.D,
PhysicalKey.E => Key.E,
PhysicalKey.F => Key.F,
PhysicalKey.G => Key.G,
PhysicalKey.H => Key.H,
PhysicalKey.I => Key.I,
PhysicalKey.J => Key.J,
PhysicalKey.K => Key.K,
PhysicalKey.L => Key.L,
PhysicalKey.M => Key.M,
PhysicalKey.N => Key.N,
PhysicalKey.O => Key.O,
PhysicalKey.P => Key.P,
PhysicalKey.Q => Key.Q,
PhysicalKey.R => Key.R,
PhysicalKey.S => Key.S,
PhysicalKey.T => Key.T,
PhysicalKey.U => Key.U,
PhysicalKey.V => Key.V,
PhysicalKey.W => Key.W,
PhysicalKey.X => Key.X,
PhysicalKey.Y => Key.Y,
PhysicalKey.Z => Key.Z,
PhysicalKey.Minus => Key.OemMinus,
PhysicalKey.Period => Key.OemPeriod,
PhysicalKey.Quote => Key.Oem7,
PhysicalKey.Semicolon => Key.Oem1,
PhysicalKey.Slash => Key.Oem2,
// Functional Keys
PhysicalKey.AltLeft => Key.LeftAlt,
PhysicalKey.AltRight => Key.RightAlt,
PhysicalKey.Backspace => Key.Back,
PhysicalKey.CapsLock => Key.CapsLock,
PhysicalKey.ContextMenu => Key.Apps,
PhysicalKey.ControlLeft => Key.LeftCtrl,
PhysicalKey.ControlRight => Key.RightCtrl,
PhysicalKey.Enter => Key.Enter,
PhysicalKey.MetaLeft => Key.LWin,
PhysicalKey.MetaRight => Key.RWin,
PhysicalKey.ShiftLeft => Key.LeftShift,
PhysicalKey.ShiftRight => Key.RightShift,
PhysicalKey.Space => Key.Space,
PhysicalKey.Tab => Key.Tab,
PhysicalKey.Convert => Key.ImeConvert,
PhysicalKey.KanaMode => Key.KanaMode,
PhysicalKey.Lang1 => Key.HangulMode,
PhysicalKey.Lang2 => Key.HanjaMode,
PhysicalKey.Lang3 => Key.DbeKatakana,
PhysicalKey.Lang4 => Key.DbeHiragana,
PhysicalKey.Lang5 => Key.OemAuto,
PhysicalKey.NonConvert => Key.ImeNonConvert,
// Control Pad Section
PhysicalKey.Delete => Key.Delete,
PhysicalKey.End => Key.End,
PhysicalKey.Help => Key.Help,
PhysicalKey.Home => Key.Home,
PhysicalKey.Insert => Key.Insert,
PhysicalKey.PageDown => Key.PageDown,
PhysicalKey.PageUp => Key.PageUp,
// Arrow Pad Section
PhysicalKey.ArrowDown => Key.Down,
PhysicalKey.ArrowLeft => Key.Left,
PhysicalKey.ArrowRight => Key.Right,
PhysicalKey.ArrowUp => Key.Up,
// Numpad Section
PhysicalKey.NumLock => Key.NumLock,
PhysicalKey.NumPad0 => Key.NumPad0,
PhysicalKey.NumPad1 => Key.NumPad1,
PhysicalKey.NumPad2 => Key.NumPad2,
PhysicalKey.NumPad3 => Key.NumPad3,
PhysicalKey.NumPad4 => Key.NumPad4,
PhysicalKey.NumPad5 => Key.NumPad5,
PhysicalKey.NumPad6 => Key.NumPad6,
PhysicalKey.NumPad7 => Key.NumPad7,
PhysicalKey.NumPad8 => Key.NumPad8,
PhysicalKey.NumPad9 => Key.NumPad9,
PhysicalKey.NumPadAdd => Key.Add,
PhysicalKey.NumPadClear => Key.Clear,
PhysicalKey.NumPadComma => Key.AbntC2,
PhysicalKey.NumPadDecimal => Key.Decimal,
PhysicalKey.NumPadDivide => Key.Divide,
PhysicalKey.NumPadEnter => Key.Enter,
PhysicalKey.NumPadEqual => Key.OemPlus,
PhysicalKey.NumPadMultiply => Key.Multiply,
PhysicalKey.NumPadParenLeft => Key.Oem4,
PhysicalKey.NumPadParenRight => Key.Oem6,
PhysicalKey.NumPadSubtract => Key.Subtract,
// Function Section
PhysicalKey.Escape => Key.Escape,
PhysicalKey.F1 => Key.F1,
PhysicalKey.F2 => Key.F2,
PhysicalKey.F3 => Key.F3,
PhysicalKey.F4 => Key.F4,
PhysicalKey.F5 => Key.F5,
PhysicalKey.F6 => Key.F6,
PhysicalKey.F7 => Key.F7,
PhysicalKey.F8 => Key.F8,
PhysicalKey.F9 => Key.F9,
PhysicalKey.F10 => Key.F10,
PhysicalKey.F11 => Key.F11,
PhysicalKey.F12 => Key.F12,
PhysicalKey.F13 => Key.F13,
PhysicalKey.F14 => Key.F14,
PhysicalKey.F15 => Key.F15,
PhysicalKey.F16 => Key.F16,
PhysicalKey.F17 => Key.F17,
PhysicalKey.F18 => Key.F18,
PhysicalKey.F19 => Key.F19,
PhysicalKey.F20 => Key.F20,
PhysicalKey.F21 => Key.F21,
PhysicalKey.F22 => Key.F22,
PhysicalKey.F23 => Key.F23,
PhysicalKey.F24 => Key.F24,
PhysicalKey.PrintScreen => Key.PrintScreen,
PhysicalKey.ScrollLock => Key.Scroll,
PhysicalKey.Pause => Key.Pause,
// Media Keys
PhysicalKey.BrowserBack => Key.BrowserBack,
PhysicalKey.BrowserFavorites => Key.BrowserFavorites,
PhysicalKey.BrowserForward => Key.BrowserForward,
PhysicalKey.BrowserHome => Key.BrowserHome,
PhysicalKey.BrowserRefresh => Key.BrowserRefresh,
PhysicalKey.BrowserSearch => Key.BrowserSearch,
PhysicalKey.BrowserStop => Key.BrowserStop,
PhysicalKey.Eject => Key.None,
PhysicalKey.LaunchApp1 => Key.LaunchApplication1,
PhysicalKey.LaunchApp2 => Key.LaunchApplication2,
PhysicalKey.LaunchMail => Key.LaunchMail,
PhysicalKey.MediaPlayPause => Key.MediaPlayPause,
PhysicalKey.MediaSelect => Key.SelectMedia,
PhysicalKey.MediaStop => Key.MediaStop,
PhysicalKey.MediaTrackNext => Key.MediaNextTrack,
PhysicalKey.MediaTrackPrevious => Key.MediaPreviousTrack,
PhysicalKey.Power => Key.None,
PhysicalKey.Sleep => Key.Sleep,
PhysicalKey.AudioVolumeDown => Key.VolumeDown,
PhysicalKey.AudioVolumeMute => Key.VolumeMute,
PhysicalKey.AudioVolumeUp => Key.VolumeUp,
PhysicalKey.WakeUp => Key.None,
// Legacy Keys
PhysicalKey.Again => Key.None,
PhysicalKey.Copy => Key.OemCopy,
PhysicalKey.Cut => Key.None,
PhysicalKey.Find => Key.None,
PhysicalKey.Open => Key.None,
PhysicalKey.Paste => Key.None,
PhysicalKey.Props => Key.None,
PhysicalKey.Select => Key.Select,
PhysicalKey.Undo => Key.None,
_ => Key.None
};
/// <summary>
/// Maps a physical key to a corresponding key symbol, if possible, on a QWERTY keyboard.
/// </summary>
/// <param name="physicalKey">the physical key to map.</param>
/// <param name="useShiftModifier">Indicates whether the Shift key is considered pressed.</param>
/// <returns>The key corresponding to <paramref name="physicalKey"/>, or <see cref="Key.None"/>.</returns>
public static string? ToQwertyKeySymbol(this PhysicalKey physicalKey, bool useShiftModifier = false)
=> physicalKey switch
{
PhysicalKey.None => null,
// Writing System Keys
PhysicalKey.Backquote => useShiftModifier ? "~" : "`",
PhysicalKey.Backslash => useShiftModifier ? "|" : "\\",
PhysicalKey.BracketLeft => useShiftModifier ? "{" : "[",
PhysicalKey.BracketRight => useShiftModifier ? "}" : "]",
PhysicalKey.Comma => useShiftModifier ? "<" : ",",
PhysicalKey.Digit0 => useShiftModifier ? ")" : "0",
PhysicalKey.Digit1 => useShiftModifier ? "!" : "1",
PhysicalKey.Digit2 => useShiftModifier ? "@" : "2",
PhysicalKey.Digit3 => useShiftModifier ? "#" : "3",
PhysicalKey.Digit4 => useShiftModifier ? "$" : "4",
PhysicalKey.Digit5 => useShiftModifier ? "%" : "5",
PhysicalKey.Digit6 => useShiftModifier ? "^" : "6",
PhysicalKey.Digit7 => useShiftModifier ? "&" : "7",
PhysicalKey.Digit8 => useShiftModifier ? "*" : "8",
PhysicalKey.Digit9 => useShiftModifier ? "(" : "9",
PhysicalKey.Equal => useShiftModifier ? "+" : "=",
PhysicalKey.IntlBackslash => useShiftModifier ? "|" : "\\",
PhysicalKey.IntlRo => null,
PhysicalKey.IntlYen => null,
PhysicalKey.A => useShiftModifier ? "A" : "a",
PhysicalKey.B => useShiftModifier ? "B" : "b",
PhysicalKey.C => useShiftModifier ? "C" : "c",
PhysicalKey.D => useShiftModifier ? "D" : "d",
PhysicalKey.E => useShiftModifier ? "E" : "e",
PhysicalKey.F => useShiftModifier ? "F" : "f",
PhysicalKey.G => useShiftModifier ? "G" : "g",
PhysicalKey.H => useShiftModifier ? "H" : "h",
PhysicalKey.I => useShiftModifier ? "I" : "i",
PhysicalKey.J => useShiftModifier ? "J" : "j",
PhysicalKey.K => useShiftModifier ? "K" : "k",
PhysicalKey.L => useShiftModifier ? "L" : "l",
PhysicalKey.M => useShiftModifier ? "M" : "m",
PhysicalKey.N => useShiftModifier ? "N" : "n",
PhysicalKey.O => useShiftModifier ? "O" : "o",
PhysicalKey.P => useShiftModifier ? "P" : "p",
PhysicalKey.Q => useShiftModifier ? "Q" : "q",
PhysicalKey.R => useShiftModifier ? "R" : "r",
PhysicalKey.S => useShiftModifier ? "S" : "s",
PhysicalKey.T => useShiftModifier ? "T" : "t",
PhysicalKey.U => useShiftModifier ? "U" : "u",
PhysicalKey.V => useShiftModifier ? "V" : "v",
PhysicalKey.W => useShiftModifier ? "W" : "w",
PhysicalKey.X => useShiftModifier ? "X" : "x",
PhysicalKey.Y => useShiftModifier ? "Y" : "y",
PhysicalKey.Z => useShiftModifier ? "Z" : "z",
PhysicalKey.Minus => useShiftModifier ? "_" : "-",
PhysicalKey.Period => useShiftModifier ? ">" : ".",
PhysicalKey.Quote => useShiftModifier ? "\"" : "'",
PhysicalKey.Semicolon => useShiftModifier ? ":" : ";",
PhysicalKey.Slash => useShiftModifier ? "?" : "/",
// Functional Keys
PhysicalKey.AltLeft => null,
PhysicalKey.AltRight => null,
PhysicalKey.Backspace => "\b",
PhysicalKey.CapsLock => null,
PhysicalKey.ContextMenu => null,
PhysicalKey.ControlLeft => null,
PhysicalKey.ControlRight => null,
PhysicalKey.Enter => "\r",
PhysicalKey.MetaLeft => null,
PhysicalKey.MetaRight => null,
PhysicalKey.ShiftLeft => null,
PhysicalKey.ShiftRight => null,
PhysicalKey.Space => " ",
PhysicalKey.Tab => "\t",
PhysicalKey.Convert => null,
PhysicalKey.KanaMode => null,
PhysicalKey.Lang1 => null,
PhysicalKey.Lang2 => null,
PhysicalKey.Lang3 => null,
PhysicalKey.Lang4 => null,
PhysicalKey.Lang5 => null,
PhysicalKey.NonConvert => null,
// Control Pad Section
PhysicalKey.Delete => null,
PhysicalKey.End => null,
PhysicalKey.Help => null,
PhysicalKey.Home => null,
PhysicalKey.Insert => null,
PhysicalKey.PageDown => null,
PhysicalKey.PageUp => null,
// Arrow Pad Section
PhysicalKey.ArrowDown => null,
PhysicalKey.ArrowLeft => null,
PhysicalKey.ArrowRight => null,
PhysicalKey.ArrowUp => null,
// Numpad Section
PhysicalKey.NumLock => null,
PhysicalKey.NumPad0 => "0",
PhysicalKey.NumPad1 => "1",
PhysicalKey.NumPad2 => "2",
PhysicalKey.NumPad3 => "3",
PhysicalKey.NumPad4 => "4",
PhysicalKey.NumPad5 => "5",
PhysicalKey.NumPad6 => "6",
PhysicalKey.NumPad7 => "7",
PhysicalKey.NumPad8 => "8",
PhysicalKey.NumPad9 => "9",
PhysicalKey.NumPadAdd => "+",
PhysicalKey.NumPadClear => null,
PhysicalKey.NumPadComma => ",",
PhysicalKey.NumPadDecimal => ".",
PhysicalKey.NumPadDivide => "/",
PhysicalKey.NumPadEnter => "\r",
PhysicalKey.NumPadEqual => "=",
PhysicalKey.NumPadMultiply => "*",
PhysicalKey.NumPadParenLeft => "(",
PhysicalKey.NumPadParenRight => ")",
PhysicalKey.NumPadSubtract => "-",
// Function Section
PhysicalKey.Escape => "\u001B",
PhysicalKey.F1 => null,
PhysicalKey.F2 => null,
PhysicalKey.F3 => null,
PhysicalKey.F4 => null,
PhysicalKey.F5 => null,
PhysicalKey.F6 => null,
PhysicalKey.F7 => null,
PhysicalKey.F8 => null,
PhysicalKey.F9 => null,
PhysicalKey.F10 => null,
PhysicalKey.F11 => null,
PhysicalKey.F12 => null,
PhysicalKey.F13 => null,
PhysicalKey.F14 => null,
PhysicalKey.F15 => null,
PhysicalKey.F16 => null,
PhysicalKey.F17 => null,
PhysicalKey.F18 => null,
PhysicalKey.F19 => null,
PhysicalKey.F20 => null,
PhysicalKey.F21 => null,
PhysicalKey.F22 => null,
PhysicalKey.F23 => null,
PhysicalKey.F24 => null,
PhysicalKey.PrintScreen => null,
PhysicalKey.ScrollLock => null,
PhysicalKey.Pause => null,
// Media Keys
PhysicalKey.BrowserBack => null,
PhysicalKey.BrowserFavorites => null,
PhysicalKey.BrowserForward => null,
PhysicalKey.BrowserHome => null,
PhysicalKey.BrowserRefresh => null,
PhysicalKey.BrowserSearch => null,
PhysicalKey.BrowserStop => null,
PhysicalKey.Eject => null,
PhysicalKey.LaunchApp1 => null,
PhysicalKey.LaunchApp2 => null,
PhysicalKey.LaunchMail => null,
PhysicalKey.MediaPlayPause => null,
PhysicalKey.MediaSelect => null,
PhysicalKey.MediaStop => null,
PhysicalKey.MediaTrackNext => null,
PhysicalKey.MediaTrackPrevious => null,
PhysicalKey.Power => null,
PhysicalKey.Sleep => null,
PhysicalKey.AudioVolumeDown => null,
PhysicalKey.AudioVolumeMute => null,
PhysicalKey.AudioVolumeUp => null,
PhysicalKey.WakeUp => null,
// Legacy Keys
PhysicalKey.Again => null,
PhysicalKey.Copy => null,
PhysicalKey.Cut => null,
PhysicalKey.Find => null,
PhysicalKey.Open => null,
PhysicalKey.Paste => null,
PhysicalKey.Props => null,
PhysicalKey.Select => null,
PhysicalKey.Undo => null,
_ => null
};
}