feat: add compositor overview scene

README.md

@@ -116,6 +116,11 @@ to center the focused column, `Super+[` to consume the focused window into an
 adjacent column, and `Super+]` to expel it. `Super+Ctrl+H/J/K/L` resizes in the
 corresponding direction.
 
+`Super+Tab` toggles the compositor overview. Its live window previews retain
+their client surfaces, `Super+H/J/K/L` moves the selection using the presented
+preview geometry, and clicking a preview activates it without forwarding the
+selection click to the application.
+
 Keyboard and direct-session touchpad settings are applied at startup:
 
 ```toml

compositor/src/config.rs

@@ -247,6 +247,7 @@ pub enum BindingAction {
     Consume,
     Expel,
     ToggleFloating,
+    ToggleOverview,
 }
 
 impl Binding {
@@ -1097,6 +1098,10 @@ fn parse_action(
             no_argument()?;
             Ok(BindingAction::ToggleFloating)
         }
+        "toggle-overview" => {
+            no_argument()?;
+            Ok(BindingAction::ToggleOverview)
+        }
         _ => Err(ConfigError::InvalidBinding(format!(
             "unknown action {action:?}"
         ))),
@@ -1135,6 +1140,7 @@ fn default_bindings() -> Vec<BindingConfig> {
         binding("Super+[", "consume", None),
         binding("Super+]", "expel", None),
         binding("Super+Shift+Space", "toggle-floating", None),
+        binding("Super+Tab", "toggle-overview", None),
     ];
 
     for (key, direction) in [("H", "left"), ("J", "down"), ("K", "up"), ("L", "right")] {
@@ -1622,12 +1628,17 @@ mod tests {
         let input = config.input_settings().unwrap();
         let bindings = config.bindings(&input).unwrap();
 
-        assert_eq!(bindings.len(), 39);
+        assert_eq!(bindings.len(), 40);
         assert!(bindings.iter().any(|binding| {
             binding.modifiers.logo
                 && binding.trigger == BindingTrigger::Keysym(keysyms::KEY_Return)
                 && binding.action == BindingAction::Spawn(vec!["foot".to_owned()])
         }));
+        assert!(bindings.iter().any(|binding| {
+            binding.modifiers.logo
+                && binding.trigger == BindingTrigger::Keysym(keysyms::KEY_Tab)
+                && binding.action == BindingAction::ToggleOverview
+        }));
     }
 
     #[test]
@@ -1639,7 +1650,7 @@ mod tests {
 
         let input = replaced.input_settings().unwrap();
         let bindings = replaced.bindings(&input).unwrap();
-        assert_eq!(bindings.len(), 39);
+        assert_eq!(bindings.len(), 40);
         assert!(bindings.iter().any(|binding| {
             binding.action
                 == BindingAction::Spawn(vec![
@@ -1651,7 +1662,7 @@ mod tests {
 
         let input = unbound.input_settings().unwrap();
         let bindings = unbound.bindings(&input).unwrap();
-        assert_eq!(bindings.len(), 38);
+        assert_eq!(bindings.len(), 39);
         assert!(
             !bindings
                 .iter()

compositor/src/input.rs

@@ -167,6 +167,17 @@ impl Ferese {
                 let pointer = self.seat.get_pointer().expect("seat has a pointer");
                 let serial = SERIAL_COUNTER.next_serial();
 
+                if self.overview.is_active() {
+                    if event.state() == ButtonState::Pressed
+                        && let Some(window) = self.window_under_visual(pointer.current_location())
+                        && let Some(id) = self.window_ids.get(&window).copied()
+                    {
+                        self.select_overview_window(id);
+                    }
+
+                    return;
+                }
+
                 if event.state() == ButtonState::Pressed && !pointer.is_grabbed() {
                     self.focus_window_at(pointer.current_location(), serial);
                 }
@@ -334,7 +345,10 @@ impl Ferese {
         pointer: &PointerHandle<Self>,
         position: Point<f64, Logical>,
     ) {
-        if !self.input_settings.focus_follows_mouse || pointer.is_grabbed() {
+        if self.overview.is_active()
+            || !self.input_settings.focus_follows_mouse
+            || pointer.is_grabbed()
+        {
             return;
         }
 
@@ -467,6 +481,7 @@ impl Ferese {
             BindingAction::Consume => self.consume_focused_window(),
             BindingAction::Expel => self.expel_focused_window(),
             BindingAction::ToggleFloating => self.toggle_focused_floating(),
+            BindingAction::ToggleOverview => self.toggle_overview(),
         }
     }
 }

compositor/src/main.rs

@@ -9,6 +9,7 @@ mod handlers;
 mod input;
 mod ipc;
 mod metrics;
+mod overview;
 mod private_client;
 mod shell_control;
 mod stacking;

compositor/src/overview.rs

@@ -0,0 +1,408 @@
+use std::{collections::HashMap, time::Duration};
+
+use ferese_animation::{AnimatedRect, SpringConfig};
+use ferese_layout::{Direction, Rect, WindowId};
+
+use crate::Ferese;
+
+const OVERVIEW_MARGIN: f64 = 48.0;
+const OVERVIEW_GAP: f64 = 24.0;
+const MAX_PREVIEW_SCALE: f64 = 0.82;
+
+#[derive(Debug, Default)]
+pub(crate) struct OverviewState {
+    active: bool,
+    selected: Option<WindowId>,
+    presentations: HashMap<WindowId, AnimatedRect>,
+}
+
+impl OverviewState {
+    pub(crate) fn is_active(&self) -> bool {
+        self.active
+    }
+
+    pub(crate) fn is_presenting(&self) -> bool {
+        self.active || !self.presentations.is_empty()
+    }
+
+    pub(crate) fn selected(&self) -> Option<WindowId> {
+        self.selected
+    }
+
+    pub(crate) fn select_direction(&mut self, direction: Direction) -> bool {
+        let Some(current) = self
+            .selected
+            .and_then(|id| self.presentations.get(&id))
+            .map(|presentation| presentation.current)
+        else {
+            return false;
+        };
+        let current_center = rect_center(current);
+        let next = self
+            .presentations
+            .iter()
+            .filter(|(id, _)| Some(**id) != self.selected)
+            .filter_map(|(id, presentation)| {
+                let center = rect_center(presentation.current);
+                directional_distance(direction, current_center, center)
+                    .map(|distance| (*id, distance))
+            })
+            .min_by(|(left_id, left), (right_id, right)| {
+                left.total_cmp(right)
+                    .then_with(|| left_id.0.cmp(&right_id.0))
+            })
+            .map(|(id, _)| id);
+        let Some(next) = next else {
+            return false;
+        };
+
+        self.selected = Some(next);
+        true
+    }
+
+    pub(crate) fn presented_rect(&self, id: WindowId, normal: Rect) -> Rect {
+        self.presentations
+            .get(&id)
+            .map_or(normal, |presentation| presentation.current)
+    }
+
+    fn enter(
+        &mut self,
+        targets: HashMap<WindowId, (Rect, Rect)>,
+        selected: Option<WindowId>,
+        animations_enabled: bool,
+    ) {
+        self.active = true;
+        self.selected = selected
+            .filter(|id| targets.contains_key(id))
+            .or_else(|| targets.keys().copied().min_by_key(|id| id.0));
+        self.retarget(targets, animations_enabled);
+    }
+
+    fn retarget(&mut self, targets: HashMap<WindowId, (Rect, Rect)>, animations_enabled: bool) {
+        self.presentations.retain(|id, _| targets.contains_key(id));
+
+        for (id, (normal, target)) in targets {
+            let presentation = self
+                .presentations
+                .entry(id)
+                .or_insert_with(|| AnimatedRect::new(normal));
+
+            presentation.set_target(target);
+            if !animations_enabled {
+                presentation.snap();
+            }
+        }
+    }
+
+    fn exit(&mut self, normal: HashMap<WindowId, Rect>, animations_enabled: bool) {
+        self.active = false;
+        self.selected = None;
+        self.presentations.retain(|id, presentation| {
+            let Some(target) = normal.get(id).copied() else {
+                return false;
+            };
+
+            presentation.set_target(target);
+            if !animations_enabled {
+                presentation.snap();
+            }
+            true
+        });
+
+        if !animations_enabled {
+            self.presentations.clear();
+        }
+    }
+
+    pub(crate) fn advance(
+        &mut self,
+        delta: Duration,
+        spring: SpringConfig,
+        animations_enabled: bool,
+    ) -> bool {
+        let mut active_animation = false;
+
+        for presentation in self.presentations.values_mut() {
+            if animations_enabled {
+                active_animation |= presentation.advance(delta, spring);
+            } else {
+                presentation.snap();
+            }
+        }
+
+        if !self.active && !active_animation {
+            self.presentations.clear();
+        }
+
+        active_animation
+    }
+}
+
+impl Ferese {
+    pub(crate) fn set_overview_active(&mut self, active: bool) {
+        if self.overview.is_active() == active {
+            return;
+        }
+
+        if active {
+            let targets = self.overview_targets();
+            self.overview
+                .enter(targets, self.focused_window, self.animations_enabled());
+        } else {
+            let normal = self.normal_window_rects();
+            self.overview.exit(normal, self.animations_enabled());
+        }
+
+        self.notify_overview_state();
+        crate::backends::direct::render_all(self);
+    }
+
+    pub(crate) fn toggle_overview(&mut self) {
+        self.set_overview_active(!self.overview.is_active());
+    }
+
+    pub(crate) fn focus_overview_direction(&mut self, direction: Direction) -> bool {
+        if !self.overview.is_active() {
+            return false;
+        }
+
+        if self.overview.select_direction(direction) {
+            crate::backends::direct::render_all(self);
+        }
+
+        true
+    }
+
+    pub(crate) fn select_overview_window(&mut self, id: WindowId) -> bool {
+        if !self.overview.is_active() || !self.overview.presentations.contains_key(&id) {
+            return false;
+        }
+
+        if !self.activate_managed_window(id) {
+            return false;
+        }
+
+        self.set_overview_active(false);
+        true
+    }
+
+    pub(crate) fn retarget_overview(&mut self) {
+        if !self.overview.is_active() {
+            return;
+        }
+
+        let targets = self.overview_targets();
+        self.overview.retarget(targets, self.animations_enabled());
+    }
+
+    pub(crate) fn presented_window_rect(&self, id: WindowId) -> Option<Rect> {
+        let normal = self.window_geometry.get(&id)?.visual.current;
+
+        Some(self.overview.presented_rect(id, normal))
+    }
+
+    pub(crate) fn inverse_presented_window_point(
+        &self,
+        id: WindowId,
+        x: f64,
+        y: f64,
+    ) -> Option<(f64, f64)> {
+        let geometry = self.window_geometry.get(&id)?;
+        let source = geometry.client.committed_size?;
+        let presented = self.overview.presented_rect(id, geometry.visual.current);
+
+        if source.width <= 0
+            || source.height <= 0
+            || presented.width <= 0.0
+            || presented.height <= 0.0
+        {
+            return None;
+        }
+
+        let scale_x = presented.width / f64::from(source.width);
+        let scale_y = presented.height / f64::from(source.height);
+
+        Some(((x - presented.x) / scale_x, (y - presented.y) / scale_y))
+    }
+
+    pub(crate) fn overview_selected(&self, id: WindowId) -> bool {
+        self.overview.is_active() && self.overview.selected() == Some(id)
+    }
+
+    fn overview_targets(&self) -> HashMap<WindowId, (Rect, Rect)> {
+        let mut targets = HashMap::new();
+
+        for output in self.space.outputs() {
+            let Some(output_id) = self.output_id(output) else {
+                continue;
+            };
+            let Some(workspace) = self.output_workspaces.active_workspace(output_id) else {
+                continue;
+            };
+            let Some(bounds) = self.output_bounds_for(output) else {
+                continue;
+            };
+            let mut windows = self
+                .window_ids
+                .values()
+                .filter(|id| self.workspaces.workspace_for_window(**id) == Some(workspace))
+                .filter_map(|id| {
+                    let normal = self.window_geometry.get(id)?.visual.current;
+                    Some((*id, normal))
+                })
+                .collect::<Vec<_>>();
+
+            windows.sort_by_key(|(id, _)| id.0);
+            for (id, target) in overview_layout(bounds, &windows) {
+                let normal = self.window_geometry[&id].visual.current;
+                targets.insert(id, (normal, target));
+            }
+        }
+
+        targets
+    }
+
+    fn normal_window_rects(&self) -> HashMap<WindowId, Rect> {
+        self.window_geometry
+            .iter()
+            .map(|(id, geometry)| (*id, geometry.visual.current))
+            .collect()
+    }
+}
+
+fn overview_layout(bounds: Rect, windows: &[(WindowId, Rect)]) -> HashMap<WindowId, Rect> {
+    if windows.is_empty() {
+        return HashMap::new();
+    }
+
+    let content_width = (bounds.width - OVERVIEW_MARGIN * 2.0).max(1.0);
+    let content_height = (bounds.height - OVERVIEW_MARGIN * 2.0).max(1.0);
+    let aspect = (content_width / content_height).max(0.1);
+    let columns = ((windows.len() as f64 * aspect).sqrt().ceil() as usize).clamp(1, windows.len());
+    let rows = windows.len().div_ceil(columns);
+    let cell_width = ((content_width - OVERVIEW_GAP * columns.saturating_sub(1) as f64)
+        / columns as f64)
+        .max(1.0);
+    let cell_height =
+        ((content_height - OVERVIEW_GAP * rows.saturating_sub(1) as f64) / rows as f64).max(1.0);
+    let origin_x = bounds.x + OVERVIEW_MARGIN;
+    let origin_y = bounds.y + OVERVIEW_MARGIN;
+
+    windows
+        .iter()
+        .enumerate()
+        .map(|(index, (id, source))| {
+            let column = index % columns;
+            let row = index / columns;
+            let scale = (cell_width / source.width.max(1.0))
+                .min(cell_height / source.height.max(1.0))
+                .min(MAX_PREVIEW_SCALE);
+            let width = (source.width * scale).max(1.0);
+            let height = (source.height * scale).max(1.0);
+            let cell_x = origin_x + column as f64 * (cell_width + OVERVIEW_GAP);
+            let cell_y = origin_y + row as f64 * (cell_height + OVERVIEW_GAP);
+            let target = Rect::new(
+                cell_x + (cell_width - width) / 2.0,
+                cell_y + (cell_height - height) / 2.0,
+                width,
+                height,
+            );
+
+            (*id, target)
+        })
+        .collect()
+}
+
+fn rect_center(rect: Rect) -> (f64, f64) {
+    (rect.x + rect.width / 2.0, rect.y + rect.height / 2.0)
+}
+
+fn directional_distance(
+    direction: Direction,
+    current: (f64, f64),
+    candidate: (f64, f64),
+) -> Option<f64> {
+    let delta_x = candidate.0 - current.0;
+    let delta_y = candidate.1 - current.1;
+    let (primary, secondary) = match direction {
+        Direction::Left if delta_x < 0.0 => (-delta_x, delta_y.abs()),
+        Direction::Right if delta_x > 0.0 => (delta_x, delta_y.abs()),
+        Direction::Up if delta_y < 0.0 => (-delta_y, delta_x.abs()),
+        Direction::Down if delta_y > 0.0 => (delta_y, delta_x.abs()),
+        _ => return None,
+    };
+
+    Some(primary + secondary * 0.35)
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn overview_grid_fits_windows_inside_the_output() {
+        let bounds = Rect::new(0.0, 0.0, 1920.0, 1080.0);
+        let windows = (1..=5)
+            .map(|id| (WindowId(id), Rect::new(0.0, 0.0, 960.0, 1000.0)))
+            .collect::<Vec<_>>();
+        let layout = overview_layout(bounds, &windows);
+
+        assert_eq!(layout.len(), windows.len());
+        assert!(layout.values().all(|rect| {
+            rect.x >= bounds.x
+                && rect.y >= bounds.y
+                && rect.x + rect.width <= bounds.x + bounds.width
+                && rect.y + rect.height <= bounds.y + bounds.height
+        }));
+    }
+
+    #[test]
+    fn overview_grid_preserves_preview_aspect_ratio() {
+        let source = Rect::new(0.0, 0.0, 1200.0, 800.0);
+        let layout = overview_layout(
+            Rect::new(0.0, 0.0, 1920.0, 1080.0),
+            &[(WindowId(1), source)],
+        );
+        let preview = layout[&WindowId(1)];
+
+        assert!((preview.width / preview.height - source.width / source.height).abs() < 0.001);
+    }
+
+    #[test]
+    fn leaving_overview_keeps_presentations_until_they_settle() {
+        let id = WindowId(1);
+        let normal = Rect::new(0.0, 0.0, 1000.0, 800.0);
+        let target = Rect::new(200.0, 150.0, 500.0, 400.0);
+        let mut overview = OverviewState::default();
+
+        overview.enter(HashMap::from([(id, (normal, target))]), Some(id), false);
+        overview.exit(HashMap::from([(id, normal)]), true);
+
+        assert_eq!(overview.presented_rect(id, normal), target);
+        assert!(!overview.is_active());
+        assert!(overview.advance(Duration::from_millis(16), SpringConfig::default(), true));
+    }
+
+    #[test]
+    fn directional_selection_uses_presented_geometry() {
+        let left = WindowId(1);
+        let right = WindowId(2);
+        let left_rect = Rect::new(0.0, 0.0, 400.0, 400.0);
+        let right_rect = Rect::new(500.0, 0.0, 400.0, 400.0);
+        let mut overview = OverviewState::default();
+
+        overview.enter(
+            HashMap::from([
+                (left, (left_rect, left_rect)),
+                (right, (right_rect, right_rect)),
+            ]),
+            Some(left),
+            false,
+        );
+
+        assert!(overview.select_direction(Direction::Right));
+        assert_eq!(overview.selected(), Some(right));
+        assert!(!overview.select_direction(Direction::Right));
+    }
+}

compositor/src/shell_control.rs

@@ -52,7 +52,7 @@ impl Dispatch<FereseShellManagerV1, ()> for Ferese {
                 let shell = data_init.init(id, ());
 
                 shell.capabilities(1);
-                shell.overview_state(u32::from(state.overview_active));
+                shell.overview_state(u32::from(state.overview.is_active()));
                 state.send_shell_snapshot(&shell);
                 state.shell_resources.push(shell.downgrade());
             }
@@ -99,9 +99,7 @@ impl Dispatch<FereseShellV1, ()> for Ferese {
             } => {
                 let id = join_id(window_hi, window_lo);
 
-                if state.activate_managed_window(id) {
+                if !state.select_overview_window(id) {
-                    state.set_overview_active(false);
-                } else {
                     send_request_failed(
                         shell,
                         ferese_shell_v1::FailedRequest::SelectOverviewWindow,
@@ -218,19 +216,15 @@ impl Ferese {
         }
     }
 
-    fn set_overview_active(&mut self, active: bool) {
+    pub(crate) fn notify_overview_state(&mut self) {
-        if self.overview_active == active {
+        let active = self.overview.is_active();
-            return;
-        }
 
-        self.overview_active = active;
         self.shell_resources.retain(|resource| {
             resource.upgrade().is_ok_and(|shell| {
                 shell.overview_state(u32::from(active));
                 true
             })
         });
-        crate::backends::direct::render_all(self);
     }
 }
 

compositor/src/state.rs

@@ -122,6 +122,7 @@ pub struct Ferese {
     pub(crate) window_borders: HashMap<WindowId, crate::winit::WindowBorderBuffers>,
     pub(crate) window_shadows: HashMap<WindowId, crate::winit::WindowShadowBuffers>,
     pub(crate) rounded_clip_programs: HashMap<ErasedContextId, crate::winit::RoundedClipPrograms>,
+    pub(crate) overview_scrims: HashMap<OutputId, crate::winit::OverviewScrim>,
     pub(crate) material_programs: HashMap<ErasedContextId, crate::winit::MaterialProgram>,
     pub(crate) backdrop_programs: HashMap<ErasedContextId, crate::winit::BackdropProgram>,
     pub(crate) material_buffers: HashMap<WlSurface, crate::winit::MaterialBuffers>,
@@ -160,7 +161,7 @@ pub struct Ferese {
         >,
     >,
     pub(crate) shell_snapshot_serial: u32,
-    pub(crate) overview_active: bool,
+    pub(crate) overview: crate::overview::OverviewState,
     next_window_id: u64,
     next_output_id: u64,
     last_animation_tick: Instant,
@@ -259,6 +260,7 @@ impl Ferese {
             return;
         };
 
+        self.overview_scrims.remove(&output_id);
         self.pending_screencopies.retain(|capture| {
             if capture.output == *output {
                 capture.frame.failed();
@@ -446,6 +448,7 @@ impl Ferese {
             window_borders: HashMap::new(),
             window_shadows: HashMap::new(),
             rounded_clip_programs: HashMap::new(),
+            overview_scrims: HashMap::new(),
             material_programs: HashMap::new(),
             backdrop_programs: HashMap::new(),
             material_buffers: HashMap::new(),
@@ -480,7 +483,7 @@ impl Ferese {
             pending_screencopies: Vec::new(),
             shell_resources: Vec::new(),
             shell_snapshot_serial: 0,
-            overview_active: false,
+            overview: crate::overview::OverviewState::default(),
             next_window_id: 1,
             next_output_id: 1,
             last_animation_tick: start_time,
@@ -575,10 +578,13 @@ impl Ferese {
         &self,
         position: Point<f64, Logical>,
     ) -> Option<(WlSurface, Point<f64, Logical>)> {
+        if self.overview.is_active() {
+            return None;
+        }
+
         self.space.elements().rev().find_map(|window| {
             let id = self.window_ids.get(window)?;
-            let geometry = self.window_geometry.get(id)?;
+            let visual = self.presented_window_rect(*id)?;
-            let visual = geometry.visual.current;
             let inside_visual = position.x >= visual.x
                 && position.y >= visual.y
                 && position.x < visual.x + visual.width
@@ -587,7 +593,8 @@ impl Ferese {
                 return None;
             }
 
-            let (source_x, source_y) = geometry.inverse_visual_point(position.x, position.y)?;
+            let (source_x, source_y) =
+                self.inverse_presented_window_point(*id, position.x, position.y)?;
             let source_point = Point::from((source_x, source_y)) + window.geometry().loc.to_f64();
 
             window
@@ -644,7 +651,7 @@ impl Ferese {
     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;
+            let visual = self.presented_window_rect(*id)?;
 
             (position.x >= visual.x
                 && position.y >= visual.y
@@ -681,7 +688,18 @@ impl Ferese {
 
     pub fn visual_scale_for_window(&self, window: &Window) -> Option<(f64, f64)> {
         let id = self.window_ids.get(window)?;
-        self.window_geometry.get(id)?.visual_scale()
+        let geometry = self.window_geometry.get(id)?;
+        let source = geometry.client.committed_size?;
+        let presented = self.presented_window_rect(*id)?;
+
+        if source.width <= 0 || source.height <= 0 {
+            return None;
+        }
+
+        Some((
+            presented.width / f64::from(source.width),
+            presented.height / f64::from(source.height),
+        ))
     }
 
     pub(crate) fn visual_rect_for_window(
@@ -689,7 +707,7 @@ impl Ferese {
         window: &Window,
     ) -> Option<Rectangle<i32, Logical>> {
         let id = self.window_ids.get(window)?;
-        let rect = self.window_geometry.get(id)?.visual.current;
+        let rect = self.presented_window_rect(*id)?;
         let size = ClientSize::from_rect(rect);
         Some(Rectangle::new(
             (rect.x.round() as i32, rect.y.round() as i32).into(),
@@ -1143,6 +1161,7 @@ impl Ferese {
         }
         self.scrolling_world_x = scrolling_world_x;
         self.sync_window_stacking();
+        self.retarget_overview();
         self.send_shell_snapshots();
 
         crate::backends::direct::render_all(self);
@@ -1290,6 +1309,9 @@ impl Ferese {
         for id in settled_coupled_widths {
             self.viewport_coupled_widths.remove(&id);
         }
+        active_animation |=
+            self.overview
+                .advance(delta, self.spring_config, self.animations_enabled);
         self.sync_window_stacking();
 
         if active_animation {
@@ -1307,6 +1329,10 @@ impl Ferese {
         self.material_scene_generation
     }
 
+    pub(crate) fn animations_enabled(&self) -> bool {
+        self.animations_enabled
+    }
+
     pub fn record_client_commit(&mut self, window: &Window) {
         let Some(id) = self.window_ids.get(window) else {
             return;
@@ -1328,6 +1354,10 @@ impl Ferese {
     }
 
     pub fn focus_direction(&mut self, direction: Direction) {
+        if self.focus_overview_direction(direction) {
+            return;
+        }
+
         let Some(current) = self.focused_window else {
             return;
         };
@@ -1798,7 +1828,7 @@ impl Ferese {
         self.output_bounds_for(output)
     }
 
-    fn output_bounds_for(&self, output: &Output) -> Option<Rect> {
+    pub(crate) fn output_bounds_for(&self, output: &Output) -> Option<Rect> {
         let geometry = self.space.output_geometry(output)?;
         let zone = layer_map_for_output(output).non_exclusive_zone();
 

compositor/src/winit.rs

@@ -15,6 +15,7 @@ use smithay::{
                 UnderlyingStorage,
                 memory::MemoryRenderBufferRenderElement,
                 render_elements,
+                solid::{SolidColorBuffer, SolidColorRenderElement},
                 surface::{
                     WaylandSurfaceRenderElement, WaylandSurfaceTexture,
                     render_elements_from_surface_tree,
@@ -43,7 +44,7 @@ use smithay::{
     reexports::wayland_protocols::wp::presentation_time::server::wp_presentation_feedback::Kind as PresentationKind,
     reexports::wayland_server::Resource,
     utils::{
-        Buffer, Clock, Logical, Monotonic, Physical, Point, Rectangle, Scale as RenderScale,
+        Buffer, Clock, Logical, Monotonic, Physical, Point, Rectangle, Scale as RenderScale, Size,
         Transform,
     },
     wayland::shell::wlr_layer::Layer,
@@ -74,6 +75,7 @@ render_elements! {
     Window=WindowRenderElement,
     Surface=SurfaceRenderElement,
     Memory=MemoryRenderElement,
+    Solid=SolidColorRenderElement,
     Border=PixelShaderElement,
     Backdrop=BackdropRenderElement,
 }
@@ -310,6 +312,19 @@ pub(crate) struct RoundedClipPrograms {
     shadow: GlesPixelProgram,
 }
 
+#[derive(Debug)]
+pub(crate) struct OverviewScrim {
+    buffer: SolidColorBuffer,
+}
+
+impl OverviewScrim {
+    fn new(size: Size<i32, Logical>) -> Self {
+        Self {
+            buffer: SolidColorBuffer::new(size, [0.02, 0.025, 0.035, 0.62]),
+        }
+    }
+}
+
 #[derive(Clone, Debug)]
 pub(crate) struct MaterialProgram(GlesPixelProgram);
 
@@ -864,7 +879,7 @@ fn output_elements(
         .rev()
         .filter_map(|window| {
             let id = *state.window_ids.get(window)?;
-            let visual = state.window_geometry.get(&id)?.visual.current;
+            let visual = state.presented_window_rect(id)?;
             let (close_scale, close_alpha) = state.closing_visual(id);
             let visual = scaled_visual_rect(visual, close_scale);
             let decoration_progress = state
@@ -885,7 +900,11 @@ fn output_elements(
             let shadow_blur = state.theme_settings.shadow_blur;
             let shadow_opacity = state.theme_settings.shadow_opacity;
             let shadow_color = state.theme_settings.shadow_color.0;
-            let focused = state.focused_window == Some(id);
+            let focused = if state.overview.is_active() {
+                state.overview_selected(id)
+            } else {
+                state.focused_window == Some(id)
+            };
             let border_width = if focused {
                 state.theme_settings.focus_ring_width
             } else {
@@ -964,6 +983,11 @@ fn output_elements(
             ));
         }
     }
+    if state.overview.is_presenting()
+        && let Some(scrim) = overview_scrim_element(state, output, output_geometry, scale)
+    {
+        elements.push(scrim.into());
+    }
     elements.extend(layer_elements(
         state,
         renderer,
@@ -973,6 +997,31 @@ fn output_elements(
     elements
 }
 
+fn overview_scrim_element(
+    state: &mut Ferese,
+    output: &Output,
+    output_geometry: Rectangle<i32, Logical>,
+    scale: f64,
+) -> Option<SolidColorRenderElement> {
+    let output_id = state.output_id(output)?;
+    let scrim = state
+        .overview_scrims
+        .entry(output_id)
+        .or_insert_with(|| OverviewScrim::new(output_geometry.size));
+
+    scrim
+        .buffer
+        .update(output_geometry.size, [0.02, 0.025, 0.035, 0.62]);
+
+    Some(SolidColorRenderElement::from_buffer(
+        &scrim.buffer,
+        Point::<i32, Physical>::default(),
+        scale,
+        1.0,
+        RenderElementKind::Unspecified,
+    ))
+}
+
 fn rounded_clip_program(
     state: &mut Ferese,
     renderer: &mut GlesRenderer,