#[deriving(Clone, Show, Copy)]
pub enum Event {
    /// The size of the window has changed.
    Resized(uint, uint),

    /// The position of the window has changed.
    Moved(int, int),

    /// The window has been closed.
    Closed,

    /// The window received a unicode character.
    ReceivedCharacter(char),

    /// The window gained or lost focus.
    ///
    /// The parameter is true if the window has gained focus, and false if it has lost focus.
    Focused(bool),

    /// An event from the keyboard has been received.
    KeyboardInput(ElementState, ScanCode, Option<VirtualKeyCode>),

    /// The cursor has moved on the window.
    ///
    /// The parameter are the (x,y) coords in pixels relative to the top-left corner of the window.
    MouseMoved((int, int)),

    /// A positive value indicates that the wheel was rotated forward, away from the user;
    ///  a negative value indicates that the wheel was rotated backward, toward the user.
    MouseWheel(i32),

    /// An event from the mouse has been received.
    MouseInput(ElementState, MouseButton),

    /// The event loop was woken up by another thread.
    Awakened,
}

pub type ScanCode = u8;

#[deriving(Show, Hash, PartialEq, Eq, Clone, Copy)]
pub enum ElementState {
    Pressed,
    Released,
}

#[deriving(Show, Hash, PartialEq, Eq, Clone, Copy)]
pub enum MouseButton {
    LeftMouseButton,
    RightMouseButton,
    MiddleMouseButton,
    OtherMouseButton(u8),
}

#[deriving(Show, Hash, PartialEq, Eq, Clone, Copy)]
pub enum VirtualKeyCode {
    /// The '1' key over the letters.
    Key1,
    /// The '2' key over the letters.
    Key2,
    /// The '3' key over the letters.
    Key3,
    /// The '4' key over the letters.
    Key4,
    /// The '5' key over the letters.
    Key5,
    /// The '6' key over the letters.
    Key6,
    /// The '7' key over the letters.
    Key7,
    /// The '8' key over the letters.
    Key8,
    /// The '9' key over the letters.
    Key9,
    /// The '0' key over the 'O' and 'P' keys.
    Key0,

    A,
    B,
    C,
    D,
    E,
    F,
    G,
    H,
    I,
    J,
    K,
    L,
    M,
    N,
    O,
    P,
    Q,
    R,
    S,
    T,
    U,
    V,
    W,
    X,
    Y,
    Z,

    /// The Escape key, next to F1.
    Escape,

    F1,
    F2,
    F3,
    F4,
    F5,
    F6,
    F7,
    F8,
    F9,
    F10,
    F11,
    F12,
    F13,
    F14,
    F15,

    /// Print Screen/SysRq.
    Snapshot,
    /// Scroll Lock.
    Scroll,
    /// Pause/Break key, next to Scroll lock.
    Pause,

    /// `Insert`, next to Backspace.
    Insert,
    Home,
    Delete,
    End,
    PageDown,
    PageUp,

    Left,
    Up,
    Right,
    Down,

    /// The Backspace key, right over Enter.
    // TODO: rename
    Back,
    /// The Enter key.
    Return,
    /// The space bar.
    Space,

    Numlock,
    Numpad0,
    Numpad1,
    Numpad2,
    Numpad3,
    Numpad4,
    Numpad5,
    Numpad6,
    Numpad7,
    Numpad8,
    Numpad9,

    AbntC1,
    AbntC2,
    Add,
    Apostrophe,
    Apps,
    At,
    Ax,
    Backslash,
    Calculator,
    Capital,
    Colon,
    Comma,
    Convert,
    Decimal,
    Divide,
    Equals,
    Grave,
    Kana,
    Kanji,
    LAlt,
    LBracket,
    LControl,
    LMenu,
    LShift,
    LWin,
    Mail,
    MediaSelect,
    MediaStop,
    Minus,
    Multiply,
    Mute,
    MyComputer,
    NextTrack,
    NoConvert,
    NumpadComma,
    NumpadEnter,
    NumpadEquals,
    OEM102,
    Period,
    Playpause,
    Power,
    Prevtrack,
    RAlt,
    RBracket,
    RControl,
    RMenu,
    RShift,
    RWin,
    Semicolon,
    Slash,
    Sleep,
    Stop,
    Subtract,
    Sysrq,
    Tab,
    Underline,
    Unlabeled,
    VolumeDown,
    VolumeUp,
    Wake,
    Webback,
    WebFavorites,
    WebForward,
    WebHome,
    WebRefresh,
    WebSearch,
    WebStop,
    Yen,
}