2019-08-30 17:45:27 +00:00
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use std::sync::mpsc;
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2019-08-31 14:07:45 +00:00
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use widestring::{U16CString};
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2019-09-05 17:36:53 +00:00
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use crate::keyboard::{KeyEvent, KeyModifier};
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use crate::keyboard::KeyModifier::*;
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2019-08-30 17:45:27 +00:00
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#[repr(C)]
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2019-08-30 19:24:03 +00:00
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pub struct WindowsKeyboardInterceptor {
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2019-09-05 17:18:55 +00:00
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pub sender: mpsc::Sender<KeyEvent>
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2019-08-30 17:45:27 +00:00
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}
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2019-08-30 19:24:03 +00:00
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impl super::KeyboardInterceptor for WindowsKeyboardInterceptor {
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2019-08-30 17:45:27 +00:00
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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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2019-09-05 17:36:53 +00:00
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initialize_window();
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2019-08-30 17:45:27 +00:00
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}
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}
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fn start(&self) {
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2019-09-05 17:36:53 +00:00
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unsafe {
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eventloop();
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}
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2019-08-30 17:45:27 +00:00
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}
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}
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2019-08-30 19:24:03 +00:00
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pub struct WindowsKeyboardSender {
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}
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impl super::KeyboardSender for WindowsKeyboardSender {
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fn send_string(&self, s: &str) {
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2019-08-31 14:07:45 +00:00
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let res = U16CString::from_str(s);
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match res {
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Ok(s) => {
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unsafe {
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send_string(s.as_ptr());
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}
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}
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Err(e) => println!("Error while sending string: {}", e.to_string())
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}
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}
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fn delete_string(&self, count: i32) {
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2019-08-30 19:24:03 +00:00
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unsafe {
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2019-08-31 14:07:45 +00:00
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delete_string(count)
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2019-08-30 19:24:03 +00:00
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}
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}
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}
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2019-08-30 17:45:27 +00:00
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// Native bridge code
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2019-09-05 17:36:53 +00:00
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extern fn keypress_callback(_self: *mut WindowsKeyboardInterceptor, raw_buffer: *const i32, len: i32,
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is_modifier: i32, key_code: i32) {
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2019-08-30 17:45:27 +00:00
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unsafe {
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2019-09-05 17:36:53 +00:00
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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 = std::char::from_u32(buffer[0] as u32);
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2019-08-30 17:45:27 +00:00
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2019-09-05 17:36:53 +00:00
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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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0x5B | 0x5C => Some(META),
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0x10 => Some(SHIFT),
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0x12 => Some(ALT),
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0x11 => Some(CTRL),
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0x08 => 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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2019-08-30 17:45:27 +00:00
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}
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}
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2019-08-31 14:07:45 +00:00
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#[allow(improper_ctypes)]
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2019-08-30 17:45:27 +00:00
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#[link(name="winbridge", kind="static")]
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extern {
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2019-09-05 17:36:53 +00:00
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fn register_keypress_callback(s: *const WindowsKeyboardInterceptor,
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cb: extern fn(_self: *mut WindowsKeyboardInterceptor, *const i32,
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i32, i32, i32));
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2019-08-30 17:45:27 +00:00
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fn initialize_window();
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fn eventloop();
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2019-08-30 19:24:03 +00:00
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fn send_string(string: *const u16);
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2019-08-31 14:07:45 +00:00
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fn delete_string(count: i32);
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2019-08-30 17:45:27 +00:00
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}
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