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feat: Add relative mouse mode (#13928)

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* feat: Add relative mouse mode

- Add "Relative Mouse Mode" toggle in desktop toolbar and bind to InputModel
- Implement relative mouse movement path: Flutter pointer deltas -> `type: move_relative` -> new `MOUSE_TYPE_MOVE_RELATIVE` in Rust
- In server input service, simulate relative movement via Enigo and keep latest cursor position in sync
- Track pointer-lock center in Flutter (local widget + screen coordinates) and re-center OS cursor after each relative move
- Update pointer-lock center on window move/resize/restore/maximize and when remote display geometry changes
- Hide local cursor when relative mouse mode is active (both Flutter cursor and OS cursor), restore on leave/disable
- On Windows, clip OS cursor to the window rect while in relative mode and release clip when leaving/turning off
- Implement platform helpers: `get_cursor_pos`, `set_cursor_pos`, `show_cursor`, `clip_cursor` (no-op clip/hide on Linux for now)
- Add keyboard shortcut Ctrl+Alt+Shift+M to toggle relative mode (enabled by default, works on all platforms)
- Remove `enable-relative-mouse-shortcut` config option - shortcut is now always available when keyboard permission is granted
- Handle window blur/focus/minimize events to properly release/restore cursor constraints
- Add MOUSE_TYPE_MASK constant and unit tests for mouse event constants

Note: Relative mouse mode state is NOT persisted to config (session-only).
Note: On Linux, show_cursor and clip_cursor are no-ops; cursor hiding is handled by Flutter side.

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

* feat(mouse): relative mouse mode, exit hint

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

* refact(relative mouse): shortcut

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

---------

Signed-off-by: fufesou <linlong1266@gmail.com>
This commit is contained in:
fufesou
2026-01-09 10:03:14 +08:00
committed by GitHub
parent 3a9084006f
commit 998b75856d
90 changed files with 3089 additions and 165 deletions
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51
src/platform/linux.rs
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@@ -97,6 +97,7 @@ extern "C" {
y: *mut c_int,
screen_num: *mut c_int,
) -> c_int;
fn xdo_move_mouse(xdo: Xdo, x: c_int, y: c_int, screen: c_int) -> c_int;
fn xdo_new(display: *const c_char) -> Xdo;
fn xdo_get_active_window(xdo: Xdo, window: *mut *mut c_void) -> c_int;
fn xdo_get_window_location(
@@ -174,6 +175,56 @@ pub fn get_cursor_pos() -> Option<(i32, i32)> {
res
}
pub fn set_cursor_pos(x: i32, y: i32) -> bool {
let mut res = false;
XDO.with(|xdo| {
match xdo.try_borrow_mut() {
Ok(xdo) => {
if xdo.is_null() {
log::debug!("set_cursor_pos: xdo is null");
return;
}
unsafe {
let ret = xdo_move_mouse(*xdo, x, y, 0);
if ret != 0 {
log::debug!(
"set_cursor_pos: xdo_move_mouse failed with code {} for coordinates ({}, {})",
ret, x, y
);
}
res = ret == 0;
}
}
Err(_) => {
log::debug!("set_cursor_pos: failed to borrow xdo");
}
}
});
res
}
/// Clip cursor - Linux implementation is a no-op.
///
/// On X11, there's no direct equivalent to Windows ClipCursor. XGrabPointer
/// can confine the pointer but requires a window handle and has side effects.
///
/// On Wayland, pointer constraints require the zwp_pointer_constraints_v1
/// protocol which is compositor-dependent.
///
/// For relative mouse mode on Linux, the Flutter side uses pointer warping
/// (set_cursor_pos) to re-center the cursor after each movement, which achieves
/// a similar effect without requiring cursor clipping.
///
/// Returns true (always succeeds as no-op).
pub fn clip_cursor(_rect: Option<(i32, i32, i32, i32)>) -> bool {
// Log only once per process to avoid flooding logs when called frequently.
static LOGGED: AtomicBool = AtomicBool::new(false);
if !LOGGED.swap(true, Ordering::Relaxed) {
log::debug!("clip_cursor called (no-op on Linux, this message is logged only once)");
}
true
}
pub fn reset_input_cache() {}
pub fn get_focused_display(displays: Vec<DisplayInfo>) -> Option<usize> {