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ableos-framebuffer/ableos/src/keyboard/traits.rs
2022-04-12 00:23:11 +02:00

27 lines
967 B
Rust

use super::Error;
use crate::{DecodeState, DecodedKey, HandleControl, KeyCode, KeyEvent, Modifiers};
pub trait ScancodeSet {
/// Handles the state logic for the decoding of scan codes into key events.
fn advance_state(&self, state: &mut DecodeState, code: u8) -> Result<Option<KeyEvent>, Error>;
/// Convert a Scan Code set X byte to our 'KeyType' enum
fn map_scancode(&self, code: u8) -> Result<KeyCode, Error>;
/// Convert a Scan Code Set X extended byte (prefixed E0) to our `KeyType`
/// enum.
fn map_extended_scancode(&self, code: u8) -> Result<KeyCode, Error>;
}
pub trait KeyboardLayout {
/// Convert a `KeyType` enum to a Unicode character, if possible.
/// `KeyType::A` maps to `Some('a')` (or `Some('A')` if shifted), while
/// `KeyType::AltLeft` returns `None`
fn map_keycode(
&self,
keycode: KeyCode,
modifiers: &Modifiers,
handle_ctrl: HandleControl,
) -> DecodedKey;
}