105 lines
2.9 KiB
Rust
105 lines
2.9 KiB
Rust
use std::thread;
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use std::sync::mpsc;
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use std::os::raw::c_char;
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use std::ffi::CString;
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use crate::keyboard::{KeyEvent, KeyModifier};
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use crate::keyboard::KeyModifier::*;
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#[repr(C)]
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pub struct LinuxKeyboardInterceptor {
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pub sender: mpsc::Sender<KeyEvent>
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}
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impl super::KeyboardInterceptor for LinuxKeyboardInterceptor {
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fn initialize(&self) {
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unsafe {
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register_keypress_callback(self,keypress_callback);
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initialize(); // TODO: check initialization return codes
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}
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}
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fn start(&self) {
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unsafe {
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eventloop();
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}
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}
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}
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impl Drop for LinuxKeyboardInterceptor {
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fn drop(&mut self) {
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unsafe { cleanup(); }
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}
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}
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pub struct LinuxKeyboardSender {
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}
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impl super::KeyboardSender for LinuxKeyboardSender {
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fn send_string(&self, s: &str) {
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let res = CString::new(s);
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match res {
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Ok(cstr) => unsafe { send_string(cstr.as_ptr()); }
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Err(e) => panic!(e.to_string())
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}
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}
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fn send_enter(&self) {
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// On linux this is not needed, so NOOP
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}
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fn trigger_paste(&self) {
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unsafe { trigger_paste(); }
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// TODO: detect when in terminal and use trigger_terminal_paste() instead
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}
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fn delete_string(&self, count: i32) {
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unsafe {delete_string(count)}
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}
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}
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// Native bridge code
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extern fn keypress_callback(_self: *mut LinuxKeyboardInterceptor, raw_buffer: *const u8, len: i32,
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is_modifier: i32, key_code: i32) {
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unsafe {
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if is_modifier == 0 { // Char event
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// Convert the received buffer to a character
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let buffer = std::slice::from_raw_parts(raw_buffer, len as usize);
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let r = String::from_utf8_lossy(buffer).chars().nth(0);
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// Send the char through the channel
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if let Some(c) = r {
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(*_self).sender.send(KeyEvent::Char(c)).unwrap();
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}
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}else{ // Modifier event
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let modifier: Option<KeyModifier> = match key_code {
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133 => Some(META),
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50 => Some(SHIFT),
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64 => Some(ALT),
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37 => Some(CTRL),
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22 => Some(BACKSPACE),
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_ => None,
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};
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if let Some(modifier) = modifier {
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(*_self).sender.send(KeyEvent::Modifier(modifier)).unwrap();
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}
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}
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}
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}
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#[allow(improper_ctypes)]
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#[link(name="linuxbridge", kind="static")]
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extern {
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fn register_keypress_callback(s: *const LinuxKeyboardInterceptor,
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cb: extern fn(_self: *mut LinuxKeyboardInterceptor, *const u8,
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i32, i32, i32));
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fn initialize();
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fn eventloop();
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fn cleanup();
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fn send_string(string: *const c_char);
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fn delete_string(count: i32);
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fn trigger_paste();
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fn trigger_terminal_paste();
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} |