fix: ->macos, mouse events, key flags (#9733)

* fix: win->macos, mouse events,  key flags

Signed-off-by: fufesou <linlong1266@gmail.com>

* comments

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>

libs/enigo/src/macos/macos_impl.rs

@@ -111,11 +111,17 @@ pub struct Enigo {
     double_click_interval: u32,
     last_click_time: Option<std::time::Instant>,
     multiple_click: i64,
+    ignore_flags: bool,
     flags: CGEventFlags,
     char_to_vkey_map: Map<String, Map<char, CGKeyCode>>,
 }
 
 impl Enigo {
+    /// Set if ignore flags when posting events.
+    pub fn set_ignore_flags(&mut self, ignore: bool) {
+        self.ignore_flags = ignore;
+    }
+
     ///
     pub fn reset_flag(&mut self) {
         self.flags = CGEventFlags::CGEventFlagNull;
@@ -136,7 +142,9 @@ impl Enigo {
     }
 
     fn post(&self, event: CGEvent) {
-        event.set_flags(self.flags);
+        if !self.ignore_flags {
+            event.set_flags(self.flags);
+        }
         event.set_integer_value_field(EventField::EVENT_SOURCE_USER_DATA, ENIGO_INPUT_EXTRA_VALUE);
         event.post(CGEventTapLocation::HID);
     }
@@ -164,6 +172,7 @@ impl Default for Enigo {
             double_click_interval,
             multiple_click: 1,
             last_click_time: None,
+            ignore_flags: false,
             flags: CGEventFlags::CGEventFlagNull,
             char_to_vkey_map: Default::default(),
         }

src/server/input_service.rs

@@ -453,6 +453,17 @@ const MOUSE_ACTIVE_DISTANCE: i32 = 5;
 
 static RECORD_CURSOR_POS_RUNNING: AtomicBool = AtomicBool::new(false);
 
+// https://github.com/rustdesk/rustdesk/issues/9729
+// We need to do some special handling for macOS when using the legacy mode.
+#[cfg(target_os = "macos")]
+static LAST_KEY_LEGACY_MODE: AtomicBool = AtomicBool::new(false);
+// We use enigo to simulate mouse events. Only the legacy mode uses the key flags.
+#[inline]
+#[cfg(target_os = "macos")]
+fn enigo_ignore_flags() -> bool {
+    !LAST_KEY_LEGACY_MODE.load(Ordering::SeqCst)
+}
+
 pub fn try_start_record_cursor_pos() -> Option<thread::JoinHandle<()>> {
     if RECORD_CURSOR_POS_RUNNING.load(Ordering::SeqCst) {
         return None;
@@ -505,6 +516,19 @@ impl VirtualInputState {
     fn new() -> Option<Self> {
         VirtualInput::new(
             CGEventSourceStateID::CombinedSessionState,
+            // Note: `CGEventTapLocation::Session` will be affected by the mouse events.
+            // When we're simulating key events, then move the physical mouse, the key events will be affected.
+            // It looks like https://github.com/rustdesk/rustdesk/issues/9729#issuecomment-2432306822
+            // 1. Press "Command" key in RustDesk
+            // 2. Move the physical mouse
+            // 3. Press "V" key in RustDesk
+            // Then the controlled side just prints "v" instead of pasting.
+            //
+            // Changing `CGEventTapLocation::Session` to `CGEventTapLocation::HID` fixes it.
+            // But we do not consider this as a bug, because it's not a common case,
+            // we consider only RustDesk operates the controlled side.
+            //
+            // https://developer.apple.com/documentation/coregraphics/cgeventtaplocation/
             CGEventTapLocation::Session,
         )
         .map(|virtual_input| Self {
@@ -945,6 +969,8 @@ pub fn handle_mouse_(evt: &MouseEvent, conn: i32) {
     let buttons = evt.mask >> 3;
     let evt_type = evt.mask & 0x7;
     let mut en = ENIGO.lock().unwrap();
+    #[cfg(target_os = "macos")]
+    en.set_ignore_flags(enigo_ignore_flags());
     #[cfg(not(target_os = "macos"))]
     let mut to_release = Vec::new();
     if evt_type == MOUSE_TYPE_DOWN {
@@ -1662,8 +1688,7 @@ pub fn handle_key_(evt: &KeyEvent) {
                     let is_numpad_key = false;
                     #[cfg(any(target_os = "windows", target_os = "linux"))]
                     let is_numpad_key = crate::keyboard::is_numpad_rdev_key(&key);
-                    _lock_mode_handler =
+                    _lock_mode_handler = Some(LockModesHandler::new_handler(evt, is_numpad_key));
-                        Some(LockModesHandler::new_handler(evt, is_numpad_key));
                 }
             }
         }
@@ -1672,12 +1697,18 @@ pub fn handle_key_(evt: &KeyEvent) {
 
     match evt.mode.enum_value() {
         Ok(KeyboardMode::Map) => {
+            #[cfg(target_os = "macos")]
+            LAST_KEY_LEGACY_MODE.store(false, Ordering::SeqCst);
             map_keyboard_mode(evt);
         }
         Ok(KeyboardMode::Translate) => {
+            #[cfg(target_os = "macos")]
+            LAST_KEY_LEGACY_MODE.store(false, Ordering::SeqCst);
             translate_keyboard_mode(evt);
         }
         _ => {
+            #[cfg(target_os = "macos")]
+            LAST_KEY_LEGACY_MODE.store(true, Ordering::SeqCst);
             legacy_keyboard_mode(evt);
         }
     }