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// devela::ui::event::key::key
//
//! Defines [`KeyFfi`].
//
use super::*;
use crate::{ConstInit, unwrap};
#[doc = crate::_tags!(interaction ffi)]
/// An FFI-safe version of [`Key`], used in [`EventKeyFfi`][crate::EventKeyFfi].
// (The main difference is in the Char variant.)
#[doc = crate::_doc_meta!{
location("ui/event"),
test_size_of(KeyFfi = 8|64; niche Option),
}]
#[repr(C)]
#[non_exhaustive]
#[allow(missing_docs)] #[rustfmt::skip]
#[derive(Copy, Clone, Debug, Default, PartialEq, Eq, Hash)]
pub enum KeyFfi {
// common control keys
Backspace, Enter, Tab, Escape, Space,
// navigation keys
Left, Right, Up, Down,
Home, End, PageUp, PageDown,
// editing keys
Delete, Insert,
// lock keys
CapsLock, ScrollLock, NumLock,
// special system kesy
PrintScreen, Pause, Menu,
/// A keypad key.
Pad(KeyPad),
/// A multimedia key.
Media(KeyMedia),
/// A modifier key.
Mod(KeyMod),
/// Function keys (F1-F48).
Fn(u8),
#[doc = crate::_tags!(ffi)]
/// A unicode character (FFI-safe, stored as `u32`).
Char(u32),
/// A dead key (accent prefix, composition).
Dead(KeyDead),
// Letters
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,
// Digits (E row)
Digit1, Digit2, Digit3, Digit4, Digit5,
Digit6, Digit7, Digit8, Digit9, Digit0,
// ANSI punctuation / symbol positions
// E row
/// Physical key left of '1'
Backquote,
/// Physical `-` key.
Minus,
/// Physical `=` key.
Equal,
// D row
/// Physical `[` key.
BracketLeft,
/// Physical `]` key.
BracketRight,
// C (home) row
/// Physical `;` key.
Semicolon,
/// Physical `'` key.
Quote,
// B row
/// Physical `\` key.
Backslash,
/// ISO-102 extra key.
IntlBackslash,
// A row
/// Physical `,` key.
Comma,
/// Physical `.` key.
Dot,
/// Physical `/` key.
Slash,
/// A physical scancode key.
Scancode(u16),
#[default]
Unknown,
}
impl ConstInit for KeyFfi {
const INIT: Self = Self::Unknown;
}
impl Key {
/// Converts `Key` to `KeyFfi`.
pub const fn to_ffi(self) -> KeyFfi {
use {Key as K, KeyFfi as F};
match self {
// common control
K::Backspace => F::Backspace,
K::Enter => F::Enter,
K::Tab => F::Tab,
K::Escape => F::Escape,
K::Space => F::Space,
// navigation
K::Left => F::Left,
K::Right => F::Right,
K::Up => F::Up,
K::Down => F::Down,
K::Home => F::Home,
K::End => F::End,
K::PageUp => F::PageUp,
K::PageDown => F::PageDown,
// editing
K::Delete => F::Delete,
K::Insert => F::Insert,
// lock
K::CapsLock => F::CapsLock,
K::ScrollLock => F::ScrollLock,
K::NumLock => F::NumLock,
// special system
K::PrintScreen => F::PrintScreen,
K::Pause => F::Pause,
K::Menu => F::Menu,
//
K::Pad(p) => F::Pad(p),
K::Mod(m) => F::Mod(m),
K::Media(m) => F::Media(m),
K::Fn(f) => F::Fn(f),
K::Char(c) => F::Char(c as u32), // Convert char to u32
K::Dead(d) => F::Dead(d),
// Letters
K::A => F::A,
K::B => F::B,
K::C => F::C,
K::D => F::D,
K::E => F::E,
K::F => F::F,
K::G => F::G,
K::H => F::H,
K::I => F::I,
K::J => F::J,
K::K => F::K,
K::L => F::L,
K::M => F::M,
K::N => F::N,
K::O => F::O,
K::P => F::P,
K::Q => F::Q,
K::R => F::R,
K::S => F::S,
K::T => F::T,
K::U => F::U,
K::V => F::V,
K::W => F::W,
K::X => F::X,
K::Y => F::Y,
K::Z => F::Z,
// Digits (E row)
K::Digit1 => F::Digit1,
K::Digit2 => F::Digit2,
K::Digit3 => F::Digit3,
K::Digit4 => F::Digit4,
K::Digit5 => F::Digit5,
K::Digit6 => F::Digit6,
K::Digit7 => F::Digit7,
K::Digit8 => F::Digit8,
K::Digit9 => F::Digit9,
K::Digit0 => F::Digit0,
// ANSI punctuation / symbol positions
// E row
K::Backquote => F::Backquote,
K::Minus => F::Minus,
K::Equal => F::Equal,
// D row
K::BracketLeft => F::BracketLeft,
K::BracketRight => F::BracketRight,
// C (home) row
K::Semicolon => F::Semicolon,
K::Quote => F::Quote,
// B row
K::Backslash => F::Backslash,
K::IntlBackslash => F::IntlBackslash,
// A row
K::Comma => F::Comma,
K::Dot => F::Dot,
K::Slash => F::Slash,
//
K::Scancode(sc) => F::Scancode(sc),
K::Unknown => F::Unknown,
}
}
/// Converts `KeyFfi` to `Key`.
pub const fn from_ffi(from: KeyFfi) -> Key {
use {Key as K, KeyFfi as F};
match from {
// common control
F::Backspace => K::Backspace,
F::Enter => K::Enter,
F::Tab => K::Tab,
F::Escape => K::Escape,
F::Space => K::Space,
// navigation
F::Left => K::Left,
F::Right => K::Right,
F::Up => K::Up,
F::Down => K::Down,
F::Home => K::Home,
F::End => K::End,
F::PageUp => K::PageUp,
// editing
F::PageDown => K::PageDown,
F::Delete => K::Delete,
F::Insert => K::Insert,
// lock
F::CapsLock => K::CapsLock,
F::ScrollLock => K::ScrollLock,
F::NumLock => K::NumLock,
// special system
F::PrintScreen => K::PrintScreen,
F::Pause => K::Pause,
F::Menu => K::Menu,
F::Pad(p) => K::Pad(p),
F::Mod(m) => K::Mod(m),
F::Media(m) => K::Media(m),
F::Fn(f) => K::Fn(f),
F::Char(c) => K::Char(unwrap![some_or char::from_u32(c), char::REPLACEMENT_CHARACTER]),
F::Dead(d) => K::Dead(d),
// Letters
F::A => K::A,
F::B => K::B,
F::C => K::C,
F::D => K::D,
F::E => K::E,
F::F => K::F,
F::G => K::G,
F::H => K::H,
F::I => K::I,
F::J => K::J,
F::K => K::K,
F::L => K::L,
F::M => K::M,
F::N => K::N,
F::O => K::O,
F::P => K::P,
F::Q => K::Q,
F::R => K::R,
F::S => K::S,
F::T => K::T,
F::U => K::U,
F::V => K::V,
F::W => K::W,
F::X => K::X,
F::Y => K::Y,
F::Z => K::Z,
// Digits (E row)
F::Digit1 => K::Digit1,
F::Digit2 => K::Digit2,
F::Digit3 => K::Digit3,
F::Digit4 => K::Digit4,
F::Digit5 => K::Digit5,
F::Digit6 => K::Digit6,
F::Digit7 => K::Digit7,
F::Digit8 => K::Digit8,
F::Digit9 => K::Digit9,
F::Digit0 => K::Digit0,
// ANSI punctuation / symbol positions
// E row
F::Backquote => K::Backquote,
F::Minus => K::Minus,
F::Equal => K::Equal,
// D row
F::BracketLeft => K::BracketLeft,
F::BracketRight => K::BracketRight,
// C (home) row
F::Semicolon => K::Semicolon,
F::Quote => K::Quote,
// B row
F::Backslash => K::Backslash,
F::IntlBackslash => K::IntlBackslash,
// A row
F::Comma => K::Comma,
F::Dot => K::Dot,
F::Slash => K::Slash,
//
F::Scancode(sc) => K::Scancode(sc),
F::Unknown => K::Unknown,
}
}
}
crate::items! {
impl From<Key> for KeyFfi { fn from(k: Key) -> Self { Key::to_ffi(k) } }
impl From<KeyFfi> for Key { fn from(k: KeyFfi) -> Self { Key::from_ffi(k) } }
}