feat: render animated window geometry

compositor/src/handlers/mod.rs

@@ -8,6 +8,7 @@ use smithay::{
         pointer::{CursorImageStatus, PointerHandle},
     },
     reexports::wayland_server::{Resource, protocol::wl_surface::WlSurface},
+    utils::Point,
     wayland::{
         compositor::{TraversalAction, with_states, with_surface_tree_downward},
         fractional_scale::{FractionalScaleHandler, with_fractional_scale},
@@ -113,7 +114,15 @@ impl PointerConstraintsHandler for Ferese {
             return;
         };
         if focused_surface == *surface {
-            pointer.set_location(origin + location);
+            let current = pointer.current_location();
+            let scale = self
+                .window_under_visual(current)
+                .and_then(|window| self.visual_scale_for_window(&window))
+                .unwrap_or(1.0);
+            let current_surface_location = current - origin;
+            let offset = location - current_surface_location;
+
+            pointer.set_location(current + Point::from((offset.x * scale, offset.y * scale)));
         }
     }
 }

compositor/src/input.rs

@@ -135,14 +135,21 @@ impl Ferese {
             }
             InputEvent::PointerMotion { event, .. } => {
                 let pointer = self.seat.get_pointer().expect("seat has a pointer");
-                let focus = self.surface_under(pointer.current_location());
+                let position = pointer.current_location();
+                let focus = self.surface_under(position);
+                let scale = self
+                    .window_under_visual(position)
+                    .and_then(|window| self.visual_scale_for_window(&window))
+                    .unwrap_or(1.0);
+                let delta = event.delta();
+                let delta_unaccel = event.delta_unaccel();
 
                 pointer.relative_motion(
                     self,
                     focus,
                     &RelativeMotionEvent {
-                        delta: event.delta(),
-                        delta_unaccel: event.delta_unaccel(),
+                        delta: (delta.x / scale, delta.y / scale).into(),
+                        delta_unaccel: (delta_unaccel.x / scale, delta_unaccel.y / scale).into(),
                         utime: (event.time_msec() as u64).saturating_mul(1_000),
                     },
                 );
@@ -212,9 +219,7 @@ impl Ferese {
         let pointer = self.seat.get_pointer().expect("seat has a pointer");
         let keyboard = self.seat.get_keyboard().expect("seat has a keyboard");
 
-        if let Some((window, _)) = self.space.element_under(pointer.current_location()) {
-            let window = window.clone();
-
+        if let Some(window) = self.window_under_visual(pointer.current_location()) {
             self.focused_window = self.window_ids.get(&window).copied();
             if let Some(focused) = self.focused_window
                 && let Err(error) = self.workspaces.focus_window(focused)

compositor/src/state.rs

@@ -162,17 +162,48 @@ impl Ferese {
         &self,
         position: Point<f64, Logical>,
     ) -> Option<(WlSurface, Point<f64, Logical>)> {
-        self.space
-            .element_under(position)
-            .and_then(|(window, location)| {
+        self.space.elements().rev().find_map(|window| {
+            let id = self.window_ids.get(window)?;
+            let geometry = self.window_geometry.get(id)?;
+            let visual = geometry.visual.current;
+            let inside_visual = position.x >= visual.x
+                && position.y >= visual.y
+                && position.x < visual.x + visual.width
+                && position.y < visual.y + visual.height;
+            if !inside_visual {
+                return None;
+            }
+
+            let (source_x, source_y) = geometry.inverse_visual_point(position.x, position.y)?;
+            let source_point = Point::from((source_x, source_y)) + window.geometry().loc.to_f64();
+
             window
-                    .surface_under(position - location.to_f64(), WindowSurfaceType::ALL)
+                .surface_under(source_point, WindowSurfaceType::ALL)
                 .map(|(surface, surface_location)| {
-                        (surface, (surface_location + location).to_f64())
+                    let surface_point = source_point - surface_location.to_f64();
+                    (surface, position - surface_point)
                 })
         })
     }
 
+    pub fn window_under_visual(&self, position: Point<f64, Logical>) -> Option<Window> {
+        self.space.elements().rev().find_map(|window| {
+            let id = self.window_ids.get(window)?;
+            let visual = self.window_geometry.get(id)?.visual.current;
+
+            (position.x >= visual.x
+                && position.y >= visual.y
+                && position.x < visual.x + visual.width
+                && position.y < visual.y + visual.height)
+                .then(|| window.clone())
+        })
+    }
+
+    pub fn visual_scale_for_window(&self, window: &Window) -> Option<f64> {
+        let id = self.window_ids.get(window)?;
+        self.window_geometry.get(id)?.visual_scale()
+    }
+
     pub fn add_tiled_window(&mut self, window: Window) {
         let id = WindowId(self.next_window_id);
         self.next_window_id += 1;
@@ -364,6 +395,15 @@ impl Ferese {
             };
 
             active_animation |= geometry.advance(delta, SpringConfig::default(), true);
+            if let Some(size) = geometry.client.expire_wait(self.start_time.elapsed()) {
+                tracing::warn!(
+                    ?id,
+                    configured_width = size.width,
+                    configured_height = size.height,
+                    committed = ?geometry.client.committed_size,
+                    "client did not commit the final configured size within 500 ms"
+                );
+            }
             let visual = geometry.visual.current;
             self.space.map_element(
                 window,
@@ -386,7 +426,13 @@ impl Ferese {
             return;
         };
 
-        geometry.client.commit(size);
+        let matches_target = geometry.client.commit(size);
+        tracing::debug!(
+            ?id,
+            ?size,
+            matches_target,
+            "recorded client geometry commit"
+        );
     }
 
     pub fn focus_direction(&mut self, direction: Direction) {

compositor/src/winit.rs

@@ -6,21 +6,35 @@ use std::{
 use smithay::{
     backend::{
         renderer::{
-            damage::OutputDamageTracker, element::surface::WaylandSurfaceRenderElement,
+            damage::OutputDamageTracker,
+            element::{
+                surface::WaylandSurfaceRenderElement,
+                utils::{
+                    ConstrainAlign, ConstrainScaleBehavior, CropRenderElement,
+                    RelocateRenderElement, RescaleRenderElement,
+                },
+            },
             gles::GlesRenderer,
         },
         winit::{self, WinitEvent},
     },
-    desktop::utils::OutputPresentationFeedback,
+    desktop::{
+        space::{ConstrainBehavior, ConstrainReference, constrain_space_element},
+        utils::OutputPresentationFeedback,
+    },
     output::{Mode, Output, PhysicalProperties, Scale, Subpixel},
     reexports::calloop::EventLoop,
     reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback::Kind,
-    utils::{Clock, Monotonic, Rectangle, Transform},
+    utils::{Clock, Logical, Monotonic, Rectangle, Transform},
     wayland::presentation::Refresh,
 };
 
 use crate::Ferese;
 
+type AnimatedWindowRenderElement = CropRenderElement<
+    RelocateRenderElement<RescaleRenderElement<WaylandSurfaceRenderElement<GlesRenderer>>>,
+>;
+
 pub fn init(event_loop: &mut EventLoop<Ferese>, state: &mut Ferese) -> Result<(), Box<dyn Error>> {
     let (mut backend, event_source) = winit::init()?;
     let initial_scale = normalized_scale(backend.scale_factor());
@@ -90,20 +104,12 @@ pub fn init(event_loop: &mut EventLoop<Ferese>, state: &mut Ferese) -> Result<()
                 let rendered = (|| -> Result<(), Box<dyn Error>> {
                     {
                         let (renderer, mut framebuffer) = backend.bind()?;
-                        smithay::desktop::space::render_output::<
-                            _,
-                            WaylandSurfaceRenderElement<GlesRenderer>,
-                            _,
-                            _,
-                        >(
-                            &output,
+                        let elements = animated_window_elements(state, renderer, &output);
+                        damage_tracker.render_output(
                             renderer,
                             &mut framebuffer,
-                            1.0,
                             0,
-                            [&state.space],
-                            &[],
-                            &mut damage_tracker,
+                            &elements,
                             [0.035, 0.04, 0.055, 1.0],
                         )?;
                     }
@@ -143,6 +149,58 @@ pub fn init(event_loop: &mut EventLoop<Ferese>, state: &mut Ferese) -> Result<()
     Ok(())
 }
 
+fn animated_window_elements(
+    state: &Ferese,
+    renderer: &mut GlesRenderer,
+    output: &Output,
+) -> Vec<AnimatedWindowRenderElement> {
+    let Some(output_geometry) = state.space.output_geometry(output) else {
+        return Vec::new();
+    };
+    let scale = output.current_scale().fractional_scale();
+
+    state
+        .space
+        .elements()
+        .rev()
+        .filter_map(|window| {
+            let id = state.window_ids.get(window)?;
+            let visual = state.window_geometry.get(id)?.visual.current;
+            let constrain = Rectangle::<i32, Logical>::new(
+                (
+                    (visual.x - f64::from(output_geometry.loc.x)).round() as i32,
+                    (visual.y - f64::from(output_geometry.loc.y)).round() as i32,
+                )
+                    .into(),
+                (
+                    visual.width.round().max(1.0) as i32,
+                    visual.height.round().max(1.0) as i32,
+                )
+                    .into(),
+            );
+
+            Some(constrain_space_element::<
+                GlesRenderer,
+                _,
+                AnimatedWindowRenderElement,
+            >(
+                renderer,
+                window,
+                constrain.loc,
+                1.0,
+                scale,
+                constrain,
+                ConstrainBehavior {
+                    reference: ConstrainReference::Geometry,
+                    behavior: ConstrainScaleBehavior::Zoom,
+                    align: ConstrainAlign::TOP | ConstrainAlign::LEFT,
+                },
+            ))
+        })
+        .flatten()
+        .collect()
+}
+
 fn normalized_scale(scale: f64) -> f64 {
     if scale.is_finite() && scale > 0.0 {
         scale

crates/ferese-animation/src/lib.rs

@@ -179,6 +179,15 @@ impl ClientGeometry {
         self.waiting_since
             .is_some_and(|started| now.saturating_sub(started) >= CLIENT_COMMIT_TIMEOUT)
     }
+
+    pub fn expire_wait(&mut self, now: Duration) -> Option<ClientSize> {
+        if !self.timed_out(now) {
+            return None;
+        }
+
+        self.waiting_since = None;
+        self.last_configured_size
+    }
 }
 
 #[derive(Clone, Copy, Debug, PartialEq)]
@@ -225,6 +234,23 @@ impl WindowGeometry {
 
         self.visual.advance(delta, config)
     }
+
+    pub fn inverse_visual_point(&self, x: f64, y: f64) -> Option<(f64, f64)> {
+        let visual = self.visual.current;
+        let scale = self.visual_scale()?;
+
+        Some(((x - visual.x) / scale, (y - visual.y) / scale))
+    }
+
+    pub fn visual_scale(&self) -> Option<f64> {
+        let source = self.client.committed_size?;
+        let visual = self.visual.current;
+        if source.width <= 0 || source.height <= 0 || visual.width <= 0.0 || visual.height <= 0.0 {
+            return None;
+        }
+
+        Some((visual.width / f64::from(source.width)).max(visual.height / f64::from(source.height)))
+    }
 }
 
 fn advance_value(
@@ -347,6 +373,24 @@ mod tests {
 
         assert!(!client.timed_out(Duration::from_millis(499)));
         assert!(client.timed_out(Duration::from_millis(500)));
+        assert_eq!(
+            client.expire_wait(Duration::from_millis(500)),
+            Some(ClientSize::from_rect(rect))
+        );
+        assert!(!client.timed_out(Duration::from_secs(1)));
+    }
+
+    #[test]
+    fn inverse_visual_point_matches_uniform_cover_transform() {
+        let initial = Rect::new(100.0, 50.0, 400.0, 300.0);
+        let mut geometry = WindowGeometry::new(initial, Some(ClientSize::from_rect(initial)));
+        geometry.visual.current = Rect::new(200.0, 100.0, 600.0, 600.0);
+
+        // Cover scales the 4:3 source by 2x for a square allocation, then clips it.
+        assert_eq!(
+            geometry.inverse_visual_point(600.0, 500.0),
+            Some((200.0, 200.0))
+        );
     }
 
     #[test]