fix: unify animated presentation and stacking

compositor/src/grabs/move_grab.rs

@@ -7,7 +7,7 @@ use smithay::{
         PointerInnerHandle, RelativeMotionEvent,
     },
     reexports::wayland_server::protocol::wl_surface::WlSurface,
-    utils::{Logical, Point},
+    utils::{Logical, Point, Size},
 };
 
 use crate::Ferese;
@@ -16,6 +16,7 @@ pub struct MoveSurfaceGrab {
     pub start_data: GrabStartData<Ferese>,
     pub window: Window,
     pub initial_location: Point<i32, Logical>,
+    pub initial_size: Size<i32, Logical>,
     pub finished: bool,
 }
 
@@ -30,10 +31,7 @@ impl PointerGrab<Ferese> for MoveSurfaceGrab {
         handle.motion(data, None, event);
         let location = self.initial_location.to_f64() + (event.location - self.start_data.location);
         let location = location.to_i32_round();
-        let size = self.window.geometry().size;
-
-        data.set_floating_window_geometry(&self.window, location, size);
-        data.space.map_element(self.window.clone(), location, true);
+        data.set_floating_window_geometry(&self.window, location, self.initial_size);
     }
 
     fn relative_motion(
@@ -153,9 +151,6 @@ impl PointerGrab<Ferese> for MoveSurfaceGrab {
             return;
         }
 
-        let size = self.window.geometry().size;
-        data.set_floating_window_geometry(&self.window, self.initial_location, size);
-        data.space
-            .map_element(self.window.clone(), self.initial_location, true);
+        data.set_floating_window_geometry(&self.window, self.initial_location, self.initial_size);
     }
 }

compositor/src/grabs/resize_grab.rs

@@ -1,7 +1,7 @@
 use std::cell::RefCell;
 
 use smithay::{
-    desktop::{Space, Window},
+    desktop::Window,
     input::pointer::{
         AxisFrame, ButtonEvent, GestureHoldBeginEvent, GestureHoldEndEvent, GesturePinchBeginEvent,
         GesturePinchEndEvent, GesturePinchUpdateEvent, GestureSwipeBeginEvent,
@@ -275,8 +275,6 @@ impl PointerGrab<Ferese> for ResizeSurfaceGrab {
             self.initial_rect.loc,
             self.initial_rect.size,
         );
-        data.space
-            .map_element(self.window.clone(), self.initial_rect.loc, true);
     }
 }
 
@@ -326,35 +324,10 @@ impl ResizeState {
     }
 }
 
-pub fn handle_resize_commit(space: &mut Space<Window>, surface: &WlSurface) {
-    let Some(window) = space
-        .elements()
-        .find(|window| {
-            window
-                .toplevel()
-                .is_some_and(|toplevel| toplevel.wl_surface() == surface)
-        })
-        .cloned()
-    else {
-        return;
-    };
-    let Some(mut location) = space.element_location(&window) else {
-        return;
-    };
-    let geometry = window.geometry();
-    let Some((edges, initial_rect)) = ResizeState::with(surface, ResizeState::commit) else {
-        return;
-    };
-
-    if edges.left() {
-        location.x = initial_rect.loc.x + initial_rect.size.w - geometry.size.w;
-    }
-    if edges.top() {
-        location.y = initial_rect.loc.y + initial_rect.size.h - geometry.size.h;
-    }
-    if edges.left() || edges.top() {
-        space.map_element(window, location, false);
-    }
+pub fn handle_resize_commit(surface: &WlSurface) {
+    // The compositor's visual rect owns the anchored edge. A delayed client
+    // commit must not move the window or change its stacking order.
+    ResizeState::with(surface, ResizeState::commit);
 }
 
 fn constrained_size(