1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
// Copyright 2019 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
mod data;
use data::{MapEntry, KEYCODE_MAP};
use std::collections::HashMap;
/// Specifies which type of scancode to convert *from* in the KeycodeTranslator.
pub enum KeycodeTypes {
XkbScancode,
WindowsScancode,
MacScancode,
}
/// Translates scancodes of a particular type into Linux keycodes.
pub struct KeycodeTranslator {
keycode_map: HashMap<u32, MapEntry>,
}
impl KeycodeTranslator {
/// Create a new KeycodeTranslator that translates from the `from_type` type to Linux keycodes.
pub fn new(from_type: KeycodeTypes) -> KeycodeTranslator {
let mut kcm: HashMap<u32, MapEntry> = HashMap::new();
for entry in KEYCODE_MAP.into_iter() {
kcm.insert(
match from_type {
KeycodeTypes::XkbScancode => entry.xkb,
KeycodeTypes::WindowsScancode => entry.win,
KeycodeTypes::MacScancode => entry.mac,
},
*entry,
);
}
KeycodeTranslator { keycode_map: kcm }
}
/// Translates the scancode in `from_code` into a Linux keycode.
pub fn translate(&self, from_code: u32) -> Option<u16> {
Some(self.keycode_map.get(&from_code)?.linux_keycode)
}
}
#[cfg(test)]
mod tests {
use crate::keycode_converter::KeycodeTranslator;
use crate::keycode_converter::KeycodeTypes;
#[test]
fn test_translate_win_lin() {
let translator = KeycodeTranslator::new(KeycodeTypes::WindowsScancode);
let translated_code = translator.translate(0x47);
assert!(translated_code.is_some());
assert_eq!(translated_code.unwrap(), 71);
}
#[test]
fn test_translate_missing_entry() {
let translator = KeycodeTranslator::new(KeycodeTypes::WindowsScancode);
// No keycodes are this large.
let translated_code = translator.translate(0x9999999);
assert!(translated_code.is_none());
}
}
|