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keyboard.rs
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keyboard.rs
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// Copyright 2014-2021 The winit contributors
// Copyright 2021-2023 Tauri Programme within The Commons Conservancy
// SPDX-License-Identifier: Apache-2.0
//! **UNSTABLE** -- Types related to the keyboard.
// This file contains a substantial portion of the UI Events Specification by the W3C. In
// particular, the variant names within `Key` and `KeyCode` and their documentation are modified
// versions of contents of the aforementioned specification.
//
// The original documents are:
//
// ### For `Key`
// UI Events KeyboardEvent key Values
// https://www.w3.org/TR/2017/CR-uievents-key-20170601/
// Copyright © 2017 W3C® (MIT, ERCIM, Keio, Beihang).
//
// ### For `KeyCode`
// UI Events KeyboardEvent code Values
// https://www.w3.org/TR/2017/CR-uievents-code-20170601/
// Copyright © 2017 W3C® (MIT, ERCIM, Keio, Beihang).
//
// These documents were used under the terms of the following license. This W3C license as well as
// the W3C short notice apply to the `Key` and `KeyCode` enums and their variants and the
// documentation attached to their variants.
// --------- BEGGINING OF W3C LICENSE --------------------------------------------------------------
//
// License
//
// By obtaining and/or copying this work, you (the licensee) agree that you have read, understood,
// and will comply with the following terms and conditions.
//
// Permission to copy, modify, and distribute this work, with or without modification, for any
// purpose and without fee or royalty is hereby granted, provided that you include the following on
// ALL copies of the work or portions thereof, including modifications:
//
// - The full text of this NOTICE in a location viewable to users of the redistributed or derivative
// work.
// - Any pre-existing intellectual property disclaimers, notices, or terms and conditions. If none
// exist, the W3C Software and Document Short Notice should be included.
// - Notice of any changes or modifications, through a copyright statement on the new code or
// document such as "This software or document includes material copied from or derived from
// [title and URI of the W3C document]. Copyright © [YEAR] W3C® (MIT, ERCIM, Keio, Beihang)."
//
// Disclaimers
//
// THIS WORK IS PROVIDED "AS IS," AND COPYRIGHT HOLDERS MAKE NO REPRESENTATIONS OR WARRANTIES,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO, WARRANTIES OF MERCHANTABILITY OR FITNESS FOR
// ANY PARTICULAR PURPOSE OR THAT THE USE OF THE SOFTWARE OR DOCUMENT WILL NOT INFRINGE ANY THIRD
// PARTY PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
//
// COPYRIGHT HOLDERS WILL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, SPECIAL OR CONSEQUENTIAL DAMAGES
// ARISING OUT OF ANY USE OF THE SOFTWARE OR DOCUMENT.
//
// The name and trademarks of copyright holders may NOT be used in advertising or publicity
// pertaining to the work without specific, written prior permission. Title to copyright in this
// work will at all times remain with copyright holders.
//
// --------- END OF W3C LICENSE --------------------------------------------------------------------
// --------- BEGGINING OF W3C SHORT NOTICE ---------------------------------------------------------
//
// tao: https://github.com/tauri-apps/tao
//
// Copyright © 2021 World Wide Web Consortium, (Massachusetts Institute of Technology, European
// Research Consortium for Informatics and Mathematics, Keio University, Beihang). All Rights
// Reserved. This work is distributed under the W3C® Software License [1] in the hope that it will
// be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE.
//
// [1] http://www.w3.org/Consortium/Legal/copyright-software
//
// --------- END OF W3C SHORT NOTICE ---------------------------------------------------------------
use std::{fmt, str::FromStr};
use crate::{
error::OsError,
platform_impl::{
keycode_from_scancode as platform_keycode_from_scancode,
keycode_to_scancode as platform_keycode_to_scancode,
},
};
impl ModifiersState {
/// Returns `true` if the shift key is pressed.
pub fn shift_key(&self) -> bool {
self.intersects(Self::SHIFT)
}
/// Returns `true` if the control key is pressed.
pub fn control_key(&self) -> bool {
self.intersects(Self::CONTROL)
}
/// Returns `true` if the alt key is pressed.
pub fn alt_key(&self) -> bool {
self.intersects(Self::ALT)
}
/// Returns `true` if the super key is pressed.
pub fn super_key(&self) -> bool {
self.intersects(Self::SUPER)
}
}
bitflags! {
/// Represents the current state of the keyboard modifiers
///
/// Each flag represents a modifier and is set if this modifier is active.
#[derive(Clone, Copy, Default, Debug, PartialEq)]
pub struct ModifiersState: u32 {
// left and right modifiers are currently commented out, but we should be able to support
// them in a future release
/// The "shift" key.
const SHIFT = 0b100 << 0;
// const LSHIFT = 0b010 << 0;
// const RSHIFT = 0b001 << 0;
/// The "control" key.
const CONTROL = 0b100 << 3;
// const LCTRL = 0b010 << 3;
// const RCTRL = 0b001 << 3;
/// The "alt" key.
const ALT = 0b100 << 6;
// const LALT = 0b010 << 6;
// const RALT = 0b001 << 6;
/// This is the "windows" key on PC and "command" key on Mac.
const SUPER = 0b100 << 9;
// const LSUPER = 0b010 << 9;
// const RSUPER = 0b001 << 9;
}
}
#[cfg(feature = "serde")]
mod modifiers_serde {
use super::ModifiersState;
use serde::{Deserialize, Deserializer, Serialize, Serializer};
#[derive(Default, Serialize, Deserialize)]
#[serde(default)]
#[serde(rename = "ModifiersState")]
pub struct ModifiersStateSerialize {
pub shift_key: bool,
pub control_key: bool,
pub alt_key: bool,
pub super_key: bool,
}
impl Serialize for ModifiersState {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let s = ModifiersStateSerialize {
shift_key: self.shift_key(),
control_key: self.control_key(),
alt_key: self.alt_key(),
super_key: self.super_key(),
};
s.serialize(serializer)
}
}
impl<'de> Deserialize<'de> for ModifiersState {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where
D: Deserializer<'de>,
{
let ModifiersStateSerialize {
shift_key,
control_key,
alt_key,
super_key,
} = ModifiersStateSerialize::deserialize(deserializer)?;
let mut m = ModifiersState::empty();
m.set(ModifiersState::SHIFT, shift_key);
m.set(ModifiersState::CONTROL, control_key);
m.set(ModifiersState::ALT, alt_key);
m.set(ModifiersState::SUPER, super_key);
Ok(m)
}
}
}
/// Contains the platform-native physical key identifier (aka scancode)
#[non_exhaustive]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum NativeKeyCode {
Unidentified,
Windows(u16),
MacOS(u16),
Gtk(u16),
/// This is the android "key code" of the event as returned by
/// `KeyEvent.getKeyCode()`
Android(u32),
}
/// Represents the code of a physical key.
///
/// This mostly conforms to the UI Events Specification's [`KeyboardEvent.code`] with a few
/// exceptions:
/// - The keys that the specification calls "MetaLeft" and "MetaRight" are named "SuperLeft" and
/// "SuperRight" here.
/// - The key that the specification calls "Super" is reported as `Unidentified` here.
/// - The `Unidentified` variant here, can still identifiy a key through it's `NativeKeyCode`.
///
/// [`KeyboardEvent.code`]: https://w3c.github.io/uievents-code/#code-value-tables
#[non_exhaustive]
#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum KeyCode {
/// This variant is used when the key cannot be translated to any
/// other variant.
///
/// The native scancode is provided (if available) in order
/// to allow the user to specify keybindings for keys which
/// are not defined by this API.
Unidentified(NativeKeyCode),
/// <kbd>`</kbd> on a US keyboard. This is also called a backtick or grave.
/// This is the <kbd>半角</kbd>/<kbd>全角</kbd>/<kbd>漢字</kbd>
/// (hankaku/zenkaku/kanji) key on Japanese keyboards
Backquote,
/// Used for both the US <kbd>\\</kbd> (on the 101-key layout) and also for the key
/// located between the <kbd>"</kbd> and <kbd>Enter</kbd> keys on row C of the 102-,
/// 104- and 106-key layouts.
/// Labeled <kbd>#</kbd> on a UK (102) keyboard.
Backslash,
/// <kbd>[</kbd> on a US keyboard.
BracketLeft,
/// <kbd>]</kbd> on a US keyboard.
BracketRight,
/// <kbd>,</kbd> on a US keyboard.
Comma,
/// <kbd>0</kbd> on a US keyboard.
Digit0,
/// <kbd>1</kbd> on a US keyboard.
Digit1,
/// <kbd>2</kbd> on a US keyboard.
Digit2,
/// <kbd>3</kbd> on a US keyboard.
Digit3,
/// <kbd>4</kbd> on a US keyboard.
Digit4,
/// <kbd>5</kbd> on a US keyboard.
Digit5,
/// <kbd>6</kbd> on a US keyboard.
Digit6,
/// <kbd>7</kbd> on a US keyboard.
Digit7,
/// <kbd>8</kbd> on a US keyboard.
Digit8,
/// <kbd>9</kbd> on a US keyboard.
Digit9,
/// <kbd>=</kbd> on a US keyboard.
Equal,
/// Located between the left <kbd>Shift</kbd> and <kbd>Z</kbd> keys.
/// Labeled <kbd>\\</kbd> on a UK keyboard.
IntlBackslash,
/// Located between the <kbd>/</kbd> and right <kbd>Shift</kbd> keys.
/// Labeled <kbd>\\</kbd> (ro) on a Japanese keyboard.
IntlRo,
/// Located between the <kbd>=</kbd> and <kbd>Backspace</kbd> keys.
/// Labeled <kbd>¥</kbd> (yen) on a Japanese keyboard. <kbd>\\</kbd> on a
/// Russian keyboard.
IntlYen,
/// <kbd>a</kbd> on a US keyboard.
/// Labeled <kbd>q</kbd> on an AZERTY (e.g., French) keyboard.
KeyA,
/// <kbd>b</kbd> on a US keyboard.
KeyB,
/// <kbd>c</kbd> on a US keyboard.
KeyC,
/// <kbd>d</kbd> on a US keyboard.
KeyD,
/// <kbd>e</kbd> on a US keyboard.
KeyE,
/// <kbd>f</kbd> on a US keyboard.
KeyF,
/// <kbd>g</kbd> on a US keyboard.
KeyG,
/// <kbd>h</kbd> on a US keyboard.
KeyH,
/// <kbd>i</kbd> on a US keyboard.
KeyI,
/// <kbd>j</kbd> on a US keyboard.
KeyJ,
/// <kbd>k</kbd> on a US keyboard.
KeyK,
/// <kbd>l</kbd> on a US keyboard.
KeyL,
/// <kbd>m</kbd> on a US keyboard.
KeyM,
/// <kbd>n</kbd> on a US keyboard.
KeyN,
/// <kbd>o</kbd> on a US keyboard.
KeyO,
/// <kbd>p</kbd> on a US keyboard.
KeyP,
/// <kbd>q</kbd> on a US keyboard.
/// Labeled <kbd>a</kbd> on an AZERTY (e.g., French) keyboard.
KeyQ,
/// <kbd>r</kbd> on a US keyboard.
KeyR,
/// <kbd>s</kbd> on a US keyboard.
KeyS,
/// <kbd>t</kbd> on a US keyboard.
KeyT,
/// <kbd>u</kbd> on a US keyboard.
KeyU,
/// <kbd>v</kbd> on a US keyboard.
KeyV,
/// <kbd>w</kbd> on a US keyboard.
/// Labeled <kbd>z</kbd> on an AZERTY (e.g., French) keyboard.
KeyW,
/// <kbd>x</kbd> on a US keyboard.
KeyX,
/// <kbd>y</kbd> on a US keyboard.
/// Labeled <kbd>z</kbd> on a QWERTZ (e.g., German) keyboard.
KeyY,
/// <kbd>z</kbd> on a US keyboard.
/// Labeled <kbd>w</kbd> on an AZERTY (e.g., French) keyboard, and <kbd>y</kbd> on a
/// QWERTZ (e.g., German) keyboard.
KeyZ,
/// <kbd>-</kbd> on a US keyboard.
Minus,
/// <kbd>Shift</kbd>+<kbd>=</kbd> on a US keyboard.
Plus,
/// <kbd>.</kbd> on a US keyboard.
Period,
/// <kbd>'</kbd> on a US keyboard.
Quote,
/// <kbd>;</kbd> on a US keyboard.
Semicolon,
/// <kbd>/</kbd> on a US keyboard.
Slash,
/// <kbd>Alt</kbd>, <kbd>Option</kbd>, or <kbd>⌥</kbd>.
AltLeft,
/// <kbd>Alt</kbd>, <kbd>Option</kbd>, or <kbd>⌥</kbd>.
/// This is labeled <kbd>AltGr</kbd> on many keyboard layouts.
AltRight,
/// <kbd>Backspace</kbd> or <kbd>⌫</kbd>.
/// Labeled <kbd>Delete</kbd> on Apple keyboards.
Backspace,
/// <kbd>CapsLock</kbd> or <kbd>⇪</kbd>
CapsLock,
/// The application context menu key, which is typically found between the right
/// <kbd>Super</kbd> key and the right <kbd>Control</kbd> key.
ContextMenu,
/// <kbd>Control</kbd> or <kbd>⌃</kbd>
ControlLeft,
/// <kbd>Control</kbd> or <kbd>⌃</kbd>
ControlRight,
/// <kbd>Enter</kbd> or <kbd>↵</kbd>. Labeled <kbd>Return</kbd> on Apple keyboards.
Enter,
/// The Windows, <kbd>⌘</kbd>, <kbd>Command</kbd>, or other OS symbol key.
SuperLeft,
/// The Windows, <kbd>⌘</kbd>, <kbd>Command</kbd>, or other OS symbol key.
SuperRight,
/// <kbd>Shift</kbd> or <kbd>⇧</kbd>
ShiftLeft,
/// <kbd>Shift</kbd> or <kbd>⇧</kbd>
ShiftRight,
/// <kbd> </kbd> (space)
Space,
/// <kbd>Tab</kbd> or <kbd>⇥</kbd>
Tab,
/// Japanese: <kbd>変</kbd> (henkan)
Convert,
/// Japanese: <kbd>カタカナ</kbd>/<kbd>ひらがな</kbd>/<kbd>ローマ字</kbd> (katakana/hiragana/romaji)
KanaMode,
/// Korean: HangulMode <kbd>한/영</kbd> (han/yeong)
///
/// Japanese (Mac keyboard): <kbd>か</kbd> (kana)
Lang1,
/// Korean: Hanja <kbd>한</kbd> (hanja)
///
/// Japanese (Mac keyboard): <kbd>英</kbd> (eisu)
Lang2,
/// Japanese (word-processing keyboard): Katakana
Lang3,
/// Japanese (word-processing keyboard): Hiragana
Lang4,
/// Japanese (word-processing keyboard): Zenkaku/Hankaku
Lang5,
/// Japanese: <kbd>無変換</kbd> (muhenkan)
NonConvert,
/// <kbd>⌦</kbd>. The forward delete key.
/// Note that on Apple keyboards, the key labelled <kbd>Delete</kbd> on the main part of
/// the keyboard is encoded as [`Backspace`].
///
/// [`Backspace`]: Self::Backspace
Delete,
/// <kbd>Page Down</kbd>, <kbd>End</kbd>, or <kbd>↘</kbd>
End,
/// <kbd>Help</kbd>. Not present on standard PC keyboards.
Help,
/// <kbd>Home</kbd> or <kbd>↖</kbd>
Home,
/// <kbd>Insert</kbd> or <kbd>Ins</kbd>. Not present on Apple keyboards.
Insert,
/// <kbd>Page Down</kbd>, <kbd>PgDn</kbd>, or <kbd>⇟</kbd>
PageDown,
/// <kbd>Page Up</kbd>, <kbd>PgUp</kbd>, or <kbd>⇞</kbd>
PageUp,
/// <kbd>↓</kbd>
ArrowDown,
/// <kbd>←</kbd>
ArrowLeft,
/// <kbd>→</kbd>
ArrowRight,
/// <kbd>↑</kbd>
ArrowUp,
/// On the Mac, this is used for the numpad <kbd>Clear</kbd> key.
NumLock,
/// <kbd>0 Ins</kbd> on a keyboard. <kbd>0</kbd> on a phone or remote control
Numpad0,
/// <kbd>1 End</kbd> on a keyboard. <kbd>1</kbd> or <kbd>1 QZ</kbd> on a phone or remote control
Numpad1,
/// <kbd>2 ↓</kbd> on a keyboard. <kbd>2 ABC</kbd> on a phone or remote control
Numpad2,
/// <kbd>3 PgDn</kbd> on a keyboard. <kbd>3 DEF</kbd> on a phone or remote control
Numpad3,
/// <kbd>4 ←</kbd> on a keyboard. <kbd>4 GHI</kbd> on a phone or remote control
Numpad4,
/// <kbd>5</kbd> on a keyboard. <kbd>5 JKL</kbd> on a phone or remote control
Numpad5,
/// <kbd>6 →</kbd> on a keyboard. <kbd>6 MNO</kbd> on a phone or remote control
Numpad6,
/// <kbd>7 Home</kbd> on a keyboard. <kbd>7 PQRS</kbd> or <kbd>7 PRS</kbd> on a phone
/// or remote control
Numpad7,
/// <kbd>8 ↑</kbd> on a keyboard. <kbd>8 TUV</kbd> on a phone or remote control
Numpad8,
/// <kbd>9 PgUp</kbd> on a keyboard. <kbd>9 WXYZ</kbd> or <kbd>9 WXY</kbd> on a phone
/// or remote control
Numpad9,
/// <kbd>+</kbd>
NumpadAdd,
/// Found on the Microsoft Natural Keyboard.
NumpadBackspace,
/// <kbd>C</kbd> or <kbd>A</kbd> (All Clear). Also for use with numpads that have a
/// <kbd>Clear</kbd> key that is separate from the <kbd>NumLock</kbd> key. On the Mac, the
/// numpad <kbd>Clear</kbd> key is encoded as [`NumLock`].
///
/// [`NumLock`]: Self::NumLock
NumpadClear,
/// <kbd>C</kbd> (Clear Entry)
NumpadClearEntry,
/// <kbd>,</kbd> (thousands separator). For locales where the thousands separator
/// is a "." (e.g., Brazil), this key may generate a <kbd>.</kbd>.
NumpadComma,
/// <kbd>. Del</kbd>. For locales where the decimal separator is "," (e.g.,
/// Brazil), this key may generate a <kbd>,</kbd>.
NumpadDecimal,
/// <kbd>/</kbd>
NumpadDivide,
NumpadEnter,
/// <kbd>=</kbd>
NumpadEqual,
/// <kbd>#</kbd> on a phone or remote control device. This key is typically found
/// below the <kbd>9</kbd> key and to the right of the <kbd>0</kbd> key.
NumpadHash,
/// <kbd>M</kbd> Add current entry to the value stored in memory.
NumpadMemoryAdd,
/// <kbd>M</kbd> Clear the value stored in memory.
NumpadMemoryClear,
/// <kbd>M</kbd> Replace the current entry with the value stored in memory.
NumpadMemoryRecall,
/// <kbd>M</kbd> Replace the value stored in memory with the current entry.
NumpadMemoryStore,
/// <kbd>M</kbd> Subtract current entry from the value stored in memory.
NumpadMemorySubtract,
/// <kbd>*</kbd> on a keyboard. For use with numpads that provide mathematical
/// operations (<kbd>+</kbd>, <kbd>-</kbd> <kbd>*</kbd> and <kbd>/</kbd>).
///
/// Use `NumpadStar` for the <kbd>*</kbd> key on phones and remote controls.
NumpadMultiply,
/// <kbd>(</kbd> Found on the Microsoft Natural Keyboard.
NumpadParenLeft,
/// <kbd>)</kbd> Found on the Microsoft Natural Keyboard.
NumpadParenRight,
/// <kbd>*</kbd> on a phone or remote control device.
///
/// This key is typically found below the <kbd>7</kbd> key and to the left of
/// the <kbd>0</kbd> key.
///
/// Use <kbd>"NumpadMultiply"</kbd> for the <kbd>*</kbd> key on
/// numeric keypads.
NumpadStar,
/// <kbd>-</kbd>
NumpadSubtract,
/// <kbd>Esc</kbd> or <kbd>⎋</kbd>
Escape,
/// <kbd>Fn</kbd> This is typically a hardware key that does not generate a separate code.
Fn,
/// <kbd>FLock</kbd> or <kbd>FnLock</kbd>. Function Lock key. Found on the Microsoft
/// Natural Keyboard.
FnLock,
/// <kbd>PrtScr SysRq</kbd> or <kbd>Print Screen</kbd>
PrintScreen,
/// <kbd>Scroll Lock</kbd>
ScrollLock,
/// <kbd>Pause Break</kbd>
Pause,
/// Some laptops place this key to the left of the <kbd>↑</kbd> key.
///
/// This also the "back" button (triangle) on Android.
BrowserBack,
BrowserFavorites,
/// Some laptops place this key to the right of the <kbd>↑</kbd> key.
BrowserForward,
/// The "home" button on Android.
BrowserHome,
BrowserRefresh,
BrowserSearch,
BrowserStop,
/// <kbd>Eject</kbd> or <kbd>⏏</kbd>. This key is placed in the function section on some Apple
/// keyboards.
Eject,
/// Sometimes labelled <kbd>My Computer</kbd> on the keyboard
LaunchApp1,
/// Sometimes labelled <kbd>Calculator</kbd> on the keyboard
LaunchApp2,
LaunchMail,
MediaPlayPause,
MediaSelect,
MediaStop,
MediaTrackNext,
MediaTrackPrevious,
/// This key is placed in the function section on some Apple keyboards, replacing the
/// <kbd>Eject</kbd> key.
Power,
Sleep,
AudioVolumeDown,
AudioVolumeMute,
AudioVolumeUp,
WakeUp,
Hyper,
Turbo,
Abort,
Resume,
Suspend,
/// Found on Sun’s USB keyboard.
Again,
/// Found on Sun’s USB keyboard.
Copy,
/// Found on Sun’s USB keyboard.
Cut,
/// Found on Sun’s USB keyboard.
Find,
/// Found on Sun’s USB keyboard.
Open,
/// Found on Sun’s USB keyboard.
Paste,
/// Found on Sun’s USB keyboard.
Props,
/// Found on Sun’s USB keyboard.
Select,
/// Found on Sun’s USB keyboard.
Undo,
/// Use for dedicated <kbd>ひらがな</kbd> key found on some Japanese word processing keyboards.
Hiragana,
/// Use for dedicated <kbd>カタカナ</kbd> key found on some Japanese word processing keyboards.
Katakana,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F1,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F2,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F3,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F4,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F5,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F6,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F7,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F8,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F9,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F10,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F11,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F12,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F13,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F14,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F15,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F16,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F17,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F18,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F19,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F20,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F21,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F22,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F23,
/// General-purpose function key.
/// Usually found at the top of the keyboard.
F24,
/// General-purpose function key.
F25,
/// General-purpose function key.
F26,
/// General-purpose function key.
F27,
/// General-purpose function key.
F28,
/// General-purpose function key.
F29,
/// General-purpose function key.
F30,
/// General-purpose function key.
F31,
/// General-purpose function key.
F32,
/// General-purpose function key.
F33,
/// General-purpose function key.
F34,
/// General-purpose function key.
F35,
}
impl KeyCode {
/// Return platform specific scancode.
pub fn to_scancode(self) -> Option<u32> {
platform_keycode_to_scancode(self)
}
/// Return `KeyCode` from platform scancode.
pub fn from_scancode(scancode: u32) -> KeyCode {
platform_keycode_from_scancode(scancode)
}
}
impl FromStr for KeyCode {
type Err = OsError;
fn from_str(accelerator_string: &str) -> Result<Self, Self::Err> {
let keycode = match accelerator_string.to_uppercase().as_str() {
"`" | "BACKQUOTE" => KeyCode::Backquote,
"BACKSLASH" => KeyCode::Backslash,
"[" | "BRACKETLEFT" => KeyCode::BracketLeft,
"]" | "BRACKETRIGHT" => KeyCode::BracketRight,
"," | "COMMA" => KeyCode::Comma,
"0" => KeyCode::Digit0,
"1" => KeyCode::Digit1,
"2" => KeyCode::Digit2,
"3" => KeyCode::Digit3,
"4" => KeyCode::Digit4,
"5" => KeyCode::Digit5,
"6" => KeyCode::Digit6,
"7" => KeyCode::Digit7,
"8" => KeyCode::Digit8,
"9" => KeyCode::Digit9,
"NUM0" | "NUMPAD0" => KeyCode::Numpad0,
"NUM1" | "NUMPAD1" => KeyCode::Numpad1,
"NUM2" | "NUMPAD2" => KeyCode::Numpad2,
"NUM3" | "NUMPAD3" => KeyCode::Numpad3,
"NUM4" | "NUMPAD4" => KeyCode::Numpad4,
"NUM5" | "NUMPAD5" => KeyCode::Numpad5,
"NUM6" | "NUMPAD6" => KeyCode::Numpad6,
"NUM7" | "NUMPAD7" => KeyCode::Numpad7,
"NUM8" | "NUMPAD8" => KeyCode::Numpad8,
"NUM9" | "NUMPAD9" => KeyCode::Numpad9,
"=" => KeyCode::Equal,
"-" => KeyCode::Minus,
"PLUS" => KeyCode::Plus,
"." | "PERIOD" => KeyCode::Period,
"'" | "QUOTE" => KeyCode::Quote,
"\\" => KeyCode::IntlBackslash,
"A" => KeyCode::KeyA,
"B" => KeyCode::KeyB,
"C" => KeyCode::KeyC,
"D" => KeyCode::KeyD,
"E" => KeyCode::KeyE,
"F" => KeyCode::KeyF,
"G" => KeyCode::KeyG,
"H" => KeyCode::KeyH,
"I" => KeyCode::KeyI,
"J" => KeyCode::KeyJ,
"K" => KeyCode::KeyK,
"L" => KeyCode::KeyL,
"M" => KeyCode::KeyM,
"N" => KeyCode::KeyN,
"O" => KeyCode::KeyO,
"P" => KeyCode::KeyP,
"Q" => KeyCode::KeyQ,
"R" => KeyCode::KeyR,
"S" => KeyCode::KeyS,
"T" => KeyCode::KeyT,
"U" => KeyCode::KeyU,
"V" => KeyCode::KeyV,
"W" => KeyCode::KeyW,
"X" => KeyCode::KeyX,
"Y" => KeyCode::KeyY,
"Z" => KeyCode::KeyZ,
";" | "SEMICOLON" => KeyCode::Semicolon,
"/" | "SLASH" => KeyCode::Slash,
"BACKSPACE" => KeyCode::Backspace,
"CAPSLOCK" => KeyCode::CapsLock,
"CONTEXTMENU" => KeyCode::ContextMenu,
"ENTER" => KeyCode::Enter,
"SPACE" => KeyCode::Space,
"TAB" => KeyCode::Tab,
"CONVERT" => KeyCode::Convert,
"DELETE" => KeyCode::Delete,
"END" => KeyCode::End,
"HELP" => KeyCode::Help,
"HOME" => KeyCode::Home,
"PAGEDOWN" => KeyCode::PageDown,
"PAGEUP" => KeyCode::PageUp,
"DOWN" | "ARROWDOWN" => KeyCode::ArrowDown,
"UP" | "ARROWUP" => KeyCode::ArrowUp,
"LEFT" | "ARROWLEFT" => KeyCode::ArrowLeft,
"RIGHT" | "ARROWRIGHT" => KeyCode::ArrowRight,
"NUMLOCK" => KeyCode::NumLock,
"NUMADD" | "NUMPADADD" => KeyCode::NumpadAdd,
"NUMBACKSPACE" | "NUMPADBACKSPACE" => KeyCode::NumpadBackspace,
"NUMCLEAR" | "NUMPADCLEAR" => KeyCode::NumpadClear,
"NUMCOMMA" | "NUMPADCOMMA" => KeyCode::NumpadComma,
"NUMDIVIDE" | "NUMPADDIVIDE" => KeyCode::NumpadDivide,
"NUMSUBSTRACT" | "NUMPADSUBSTRACT" => KeyCode::NumpadSubtract,
"NUMENTER" | "NUMPADENTER" => KeyCode::NumpadEnter,
"ESC" | "ESCAPE" => KeyCode::Escape,
"FN" => KeyCode::Fn,
"FNLOCK" => KeyCode::FnLock,
"PRINTSCREEN" => KeyCode::PrintScreen,
"SCROLLLOCK" => KeyCode::ScrollLock,
"PAUSE" => KeyCode::Pause,
"VOLUMEMUTE" => KeyCode::AudioVolumeMute,
"VOLUMEDOWN" => KeyCode::AudioVolumeDown,
"VOLUMEUP" => KeyCode::AudioVolumeUp,
"MEDIANEXTTRACK" => KeyCode::MediaTrackNext,
"MEDIAPREVIOUSTRACK" => KeyCode::MediaTrackPrevious,
"MEDIAPLAYPAUSE" => KeyCode::MediaPlayPause,
"LAUNCHMAIL" => KeyCode::LaunchMail,
"SUSPEND" => KeyCode::Suspend,
"F1" => KeyCode::F1,
"F2" => KeyCode::F2,
"F3" => KeyCode::F3,
"F4" => KeyCode::F4,
"F5" => KeyCode::F5,
"F6" => KeyCode::F6,
"F7" => KeyCode::F7,
"F8" => KeyCode::F8,
"F9" => KeyCode::F9,
"F10" => KeyCode::F10,
"F11" => KeyCode::F11,
"F12" => KeyCode::F12,
"F13" => KeyCode::F13,
"F14" => KeyCode::F14,
"F15" => KeyCode::F15,
"F16" => KeyCode::F16,
"F17" => KeyCode::F17,
"F18" => KeyCode::F18,
"F19" => KeyCode::F19,
"F20" => KeyCode::F20,
"F21" => KeyCode::F21,
"F22" => KeyCode::F22,
"F23" => KeyCode::F23,
"F24" => KeyCode::F24,
"F25" => KeyCode::F25,
"F26" => KeyCode::F26,
"F27" => KeyCode::F27,
"F28" => KeyCode::F28,
"F29" => KeyCode::F29,
"F30" => KeyCode::F30,
"F31" => KeyCode::F31,
"F32" => KeyCode::F32,
"F33" => KeyCode::F33,
"F34" => KeyCode::F34,
"F35" => KeyCode::F35,
_ => KeyCode::Unidentified(NativeKeyCode::Unidentified),
};
Ok(keycode)
}
}
impl fmt::Display for KeyCode {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
&KeyCode::Unidentified(_) => write!(f, "{:?}", "Unidentified"),
val => write!(f, "{:?}", val),
}
}
}
/// Key represents the meaning of a keypress.
///
/// This mostly conforms to the UI Events Specification's [`KeyboardEvent.key`] with a few
/// exceptions:
/// - The `Super` variant here, is named `Meta` in the aforementioned specification. (There's
/// another key which the specification calls `Super`. That does not exist here.)
/// - The `Space` variant here, can be identified by the character it generates in the
/// specificaiton.
/// - The `Unidentified` variant here, can still identifiy a key through it's `NativeKeyCode`.
/// - The `Dead` variant here, can specify the character which is inserted when pressing the
/// dead-key twice.
///
/// [`KeyboardEvent.key`]: https://w3c.github.io/uievents-key/
#[non_exhaustive]
#[derive(Debug, Clone, PartialEq, Eq, Hash)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum Key<'a> {
/// A key string that corresponds to the character typed by the user, taking into account the
/// user’s current locale setting, and any system-level keyboard mapping overrides that are in
/// effect.
Character(&'a str),
/// This variant is used when the key cannot be translated to any other variant.
///
/// The native scancode is provided (if available) in order to allow the user to specify
/// keybindings for keys which are not defined by this API.
Unidentified(NativeKeyCode),
/// Contains the text representation of the dead-key when available.
///
/// ## Platform-specific
/// - **Web:** Always contains `None`
Dead(Option<char>),
/// The `Alt` (Alternative) key.
///
/// This key enables the alternate modifier function for interpreting concurrent or subsequent
/// keyboard input. This key value is also used for the Apple <kbd>Option</kbd> key.
Alt,
/// The Alternate Graphics (<kbd>AltGr</kbd> or <kbd>AltGraph</kbd>) key.
///
/// This key is used enable the ISO Level 3 shift modifier (the standard `Shift` key is the
/// level 2 modifier).
AltGraph,
/// The `Caps Lock` (Capital) key.
///
/// Toggle capital character lock function for interpreting subsequent keyboard input event.
CapsLock,
/// The `Control` or `Ctrl` key.
///
/// Used to enable control modifier function for interpreting concurrent or subsequent keyboard
/// input.
Control,
/// The Function switch `Fn` key. Activating this key simultaneously with another key changes
/// that key’s value to an alternate character or function. This key is often handled directly
/// in the keyboard hardware and does not usually generate key events.
Fn,
/// The Function-Lock (`FnLock` or `F-Lock`) key. Activating this key switches the mode of the
/// keyboard to changes some keys' values to an alternate character or function. This key is
/// often handled directly in the keyboard hardware and does not usually generate key events.
FnLock,
/// The `NumLock` or Number Lock key. Used to toggle numpad mode function for interpreting
/// subsequent keyboard input.
NumLock,
/// Toggle between scrolling and cursor movement modes.
ScrollLock,
/// Used to enable shift modifier function for interpreting concurrent or subsequent keyboard
/// input.
Shift,
/// The Symbol modifier key (used on some virtual keyboards).
Symbol,
SymbolLock,
Hyper,
/// Used to enable "super" modifier function for interpreting concurrent or subsequent keyboard
/// input. This key value is used for the "Windows Logo" key and the Apple `Command` or `⌘` key.
///
/// Note: In some contexts (e.g. the Web) this is referred to as the "Meta" key.
Super,
/// The `Enter` or `↵` key. Used to activate current selection or accept current input. This key
/// value is also used for the `Return` (Macintosh numpad) key. This key value is also used for
/// the Android `KEYCODE_DPAD_CENTER`.
Enter,
/// The Horizontal Tabulation `Tab` key.
Tab,
/// Used in text to insert a space between words. Usually located below the character keys.
Space,
/// Navigate or traverse downward. (`KEYCODE_DPAD_DOWN`)
ArrowDown,
/// Navigate or traverse leftward. (`KEYCODE_DPAD_LEFT`)
ArrowLeft,
/// Navigate or traverse rightward. (`KEYCODE_DPAD_RIGHT`)
ArrowRight,
/// Navigate or traverse upward. (`KEYCODE_DPAD_UP`)
ArrowUp,
/// The End key, used with keyboard entry to go to the end of content (`KEYCODE_MOVE_END`).
End,
/// The Home key, used with keyboard entry, to go to start of content (`KEYCODE_MOVE_HOME`).
/// For the mobile phone `Home` key (which goes to the phone’s main screen), use [`GoHome`].
///
/// [`GoHome`]: Self::GoHome
Home,
/// Scroll down or display next page of content.
PageDown,
/// Scroll up or display previous page of content.
PageUp,
/// Used to remove the character to the left of the cursor. This key value is also used for
/// the key labeled `Delete` on MacOS keyboards.
Backspace,
/// Remove the currently selected input.
Clear,
/// Copy the current selection. (`APPCOMMAND_COPY`)
Copy,
/// The Cursor Select key.
CrSel,
/// Cut the current selection. (`APPCOMMAND_CUT`)
Cut,
/// Used to delete the character to the right of the cursor. This key value is also used for the
/// key labeled `Delete` on MacOS keyboards when `Fn` is active.
Delete,
/// The Erase to End of Field key. This key deletes all characters from the current cursor
/// position to the end of the current field.
EraseEof,
/// The Extend Selection (Exsel) key.
ExSel,
/// Toggle between text modes for insertion or overtyping.
/// (`KEYCODE_INSERT`)
Insert,
/// The Paste key. (`APPCOMMAND_PASTE`)
Paste,
/// Redo the last action. (`APPCOMMAND_REDO`)
Redo,
/// Undo the last action. (`APPCOMMAND_UNDO`)
Undo,
/// The Accept (Commit, OK) key. Accept current option or input method sequence conversion.
Accept,
/// Redo or repeat an action.
Again,
/// The Attention (Attn) key.
Attn,
Cancel,
/// Show the application’s context menu.
/// This key is commonly found between the right `Super` key and the right `Control` key.
ContextMenu,
/// The `Esc` key. This key was originally used to initiate an escape sequence, but is
/// now more generally used to exit or "escape" the current context, such as closing a dialog
/// or exiting full screen mode.
Escape,
Execute,
/// Open the Find dialog. (`APPCOMMAND_FIND`)
Find,
/// Open a help dialog or toggle display of help information. (`APPCOMMAND_HELP`,
/// `KEYCODE_HELP`)
Help,
/// Pause the current state or application (as appropriate).
///
/// Note: Do not use this value for the `Pause` button on media controllers. Use `"MediaPause"`
/// instead.
Pause,
/// Play or resume the current state or application (as appropriate).
///
/// Note: Do not use this value for the `Play` button on media controllers. Use `"MediaPlay"`
/// instead.
Play,
/// The properties (Props) key.
Props,
Select,
/// The ZoomIn key. (`KEYCODE_ZOOM_IN`)
ZoomIn,