57 lines
1.9 KiB
Rust
57 lines
1.9 KiB
Rust
use std::ffi::OsString;
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use winapi::um::winuser::{GetKeyNameTextW, KBDLLHOOKSTRUCT};
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use wio::wide::FromWide;
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pub struct KeyState {
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pub kbdllstruct: KBDLLHOOKSTRUCT,
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pub shift_down: bool,
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pub ctrl_down: bool,
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pub win_down: bool,
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}
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impl KeyState {
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pub fn new() -> Box<Self> {
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Box::new(Self {
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kbdllstruct: KBDLLHOOKSTRUCT {
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vkCode: 0,
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scanCode: 0,
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flags: 0,
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time: 0,
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dwExtraInfo: 0,
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},
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shift_down: false,
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ctrl_down: false,
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win_down: false,
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})
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}
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/// `key_down` if the event was a keydown event, this should be true. if it was keyup it should be false
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pub fn update(&mut self, key: KBDLLHOOKSTRUCT, key_down: bool) {
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self.kbdllstruct = key;
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match key.vkCode {
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160 | 161 => self.shift_down = key_down,
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162 | 163 => self.ctrl_down = key_down,
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91 => self.win_down = key_down,
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_ => {}
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}
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}
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/// true if the key is an auxiliary key like shift, control or the windows key
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pub fn is_aux_key(&self) -> bool {
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matches!(self.kbdllstruct.vkCode, 160 | 161 | 162 | 163 | 91)
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}
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#[no_mangle]
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pub fn name(&self) -> String {
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unsafe {
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let mut out = [0_u16; 128];
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GetKeyNameTextW((self.kbdllstruct.scanCode << 16 | 1 << 24 /*this distinguishes special keys by setting a flag. yes only microsoft thinks that input and flags in 1 param is a good idea*/) as i32, (&mut out).as_mut_ptr(), 128);
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let null_pos = out.iter().position(|x| *x == b'\0' as u16).unwrap_or_else(|| out.len());
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//use to_string_lossy to avoid unicode checks for better performance. if the windows api screws up thats not my fault :P
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OsString::from_wide(&out[..null_pos]).to_str().unwrap().to_owned()
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}
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}
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} |