From d8dbf72ad2f0099e11bb765871eed6c9934f6f64 Mon Sep 17 00:00:00 2001
From: fufesou <shuanglongchen@yeah.net>
Date: Thu, 20 Apr 2023 12:15:38 +0800
Subject: [PATCH] simulate scancode for translate mode

Signed-off-by: fufesou <shuanglongchen@yeah.net>
---
 Cargo.lock                  |  2 +-
 src/flutter_ffi.rs          |  5 ++-
 src/server/input_service.rs | 72 ++-----------------------------------
 3 files changed, 5 insertions(+), 74 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index 299d99c14..f1fb3595e 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4840,7 +4840,7 @@ dependencies = [
 [[package]]
 name = "rdev"
 version = "0.5.0-2"
-source = "git+https://github.com/fufesou/rdev#aeea78dec3e731dd616da09668bbbd835a773d6c"
+source = "git+https://github.com/fufesou/rdev#b866494215329f3e8e4863c3c5fb98a10297610c"
 dependencies = [
  "cocoa",
  "core-foundation 0.9.3",
diff --git a/src/flutter_ffi.rs b/src/flutter_ffi.rs
index 2b522d470..aaee8eaff 100644
--- a/src/flutter_ffi.rs
+++ b/src/flutter_ffi.rs
@@ -10,7 +10,6 @@ use crate::{
 };
 use flutter_rust_bridge::{StreamSink, SyncReturn};
 use hbb_common::{
-    allow_err,
     config::{self, LocalConfig, PeerConfig, PeerInfoSerde, ONLINE},
     fs, log,
     message_proto::KeyboardMode,
@@ -1396,10 +1395,10 @@ pub fn send_url_scheme(_url: String) {
 
 #[inline]
 #[cfg(not(any(target_os = "android", target_os = "ios")))]
-pub fn plugin_event(id: String, event: Vec<u8>) {
+pub fn plugin_event(_id: String, _event: Vec<u8>) {
     #[cfg(feature = "plugin_framework")]
     {
-        allow_err!(crate::plugin::handle_ui_event(&id, &event));
+        allow_err!(crate::plugin::handle_ui_event(&_id, &_event));
     }
 }
 
diff --git a/src/server/input_service.rs b/src/server/input_service.rs
index ab5f7e287..8096237f6 100644
--- a/src/server/input_service.rs
+++ b/src/server/input_service.rs
@@ -15,19 +15,9 @@ use std::{
     thread,
     time::{self, Duration, Instant},
 };
-#[cfg(target_os = "windows")]
-use winapi::um::winuser::{
-    ActivateKeyboardLayout, GetForegroundWindow, GetKeyboardLayout, GetWindowThreadProcessId,
-    VkKeyScanW,
-};
 
 const INVALID_CURSOR_POS: i32 = i32::MIN;
 
-#[cfg(target_os = "windows")]
-lazy_static::lazy_static! {
-    static ref LAST_HKL: Arc<Mutex<u32>> = Arc::new(Mutex::new(0));
-}
-
 #[derive(Default)]
 struct StateCursor {
     hcursor: u64,
@@ -1244,45 +1234,7 @@ fn translate_process_code(code: u32, down: bool) {
     };
 }
 
-#[cfg(target_os = "windows")]
-fn check_update_input_layout() {
-    unsafe {
-        let foreground_thread_id =
-            GetWindowThreadProcessId(GetForegroundWindow(), std::ptr::null_mut());
-        let layout = GetKeyboardLayout(foreground_thread_id);
-        let layout_u32 = layout as u32;
-        let mut last_layout_lock = LAST_HKL.lock().unwrap();
-        if *last_layout_lock == 0 || *last_layout_lock != layout_u32 {
-            let res = ActivateKeyboardLayout(layout, 0);
-            if res == layout {
-                *last_layout_lock = layout_u32;
-            } else {
-                log::error!("Failed to call ActivateKeyboardLayout, {}", layout_u32);
-            }
-        }
-    }
-}
-
 fn translate_keyboard_mode(evt: &KeyEvent) {
-    // --server could not detect the input layout change.
-    // This is a temporary workaround.
-    //
-    // There may be a better way to detect and handle the input layout change.
-    // while ((bRet = GetMessage(&msg, NULL, 0, 0)) != 0)
-    // {
-    //     ...
-    //     if (msg.message == WM_INPUTLANGCHANGE)
-    //     {
-    //         // handle WM_INPUTLANGCHANGE message here
-    //         check_update_input_layout();
-    //     }
-    //     TranslateMessage(&msg);
-    //     DispatchMessage(&msg);
-    //     ...
-    // }
-    #[cfg(target_os = "windows")]
-    check_update_input_layout();
-
     match &evt.union {
         Some(key_event::Union::Seq(seq)) => {
             // Fr -> US
@@ -1305,7 +1257,7 @@ fn translate_keyboard_mode(evt: &KeyEvent) {
                 }
                 for chr in seq.chars() {
                     #[cfg(target_os = "windows")]
-                    rdev::simulate_char(chr).ok();
+                    rdev::simulate_char(chr, true).ok();
                     #[cfg(target_os = "linux")]
                     en.key_click(Key::Layout(chr));
                 }
@@ -1334,27 +1286,7 @@ fn translate_keyboard_mode(evt: &KeyEvent) {
 fn simulate_win2win_hotkey(code: u32, down: bool) {
     let unicode: u16 = (code & 0x0000FFFF) as u16;
     if down {
-        // Try convert unicode to virtual keycode first.
-        // https://learn.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-vkkeyscanw
-        let res = unsafe { VkKeyScanW(unicode) };
-        if res as u16 != 0xFFFF {
-            let vk = res & 0x00FF;
-            let flag = res >> 8;
-            let modifiers = [rdev::Key::ShiftLeft, rdev::Key::ControlLeft, rdev::Key::Alt];
-            let mod_len = modifiers.len();
-            for pos in 0..mod_len {
-                if flag & (0x0001 << pos) != 0 {
-                    allow_err!(rdev::simulate(&EventType::KeyPress(modifiers[pos])));
-                }
-            }
-            allow_err!(rdev::simulate_code(Some(vk as _), None, true));
-            allow_err!(rdev::simulate_code(Some(vk as _), None, false));
-            for pos in 0..mod_len {
-                let rpos = mod_len - 1 - pos;
-                if flag & (0x0001 << rpos) != 0 {
-                    allow_err!(rdev::simulate(&EventType::KeyRelease(modifiers[rpos])));
-                }
-            }
+        if rdev::simulate_key_unicode(unicode, false).is_ok() {
             return;
         }
     }