Merge pull request #197 from mahkoh/jorth/layer-shell

Implement remaining layer shell features

deploy-notes.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+- Needs jay-compositor release.
+
 # 1.2.0
 
 - Needs jay-config release.

docs/features.md

@@ -126,54 +126,53 @@ Jay's supports leasing VR headsets to applications.
 
 Jay supports the following wayland protocols:
 
-| Global                                  | Version          | Privileged    |
+| Global                                  | Version         | Privileged    |
-|-----------------------------------------|:-----------------|---------------|
+|-----------------------------------------|:----------------|---------------|
-| ext_foreign_toplevel_list_v1            | 1                | Yes           |
+| ext_foreign_toplevel_list_v1            | 1               | Yes           |
-| ext_idle_notifier_v1                    | 1                | Yes           |
+| ext_idle_notifier_v1                    | 1               | Yes           |
-| ext_session_lock_manager_v1             | 1                | Yes           |
+| ext_session_lock_manager_v1             | 1               | Yes           |
-| ext_transient_seat_manager_v1           | 1[^ts_rejected]  | Yes           |
+| ext_transient_seat_manager_v1           | 1[^ts_rejected] | Yes           |
-| org_kde_kwin_server_decoration_manager  | 1                |               |
+| org_kde_kwin_server_decoration_manager  | 1               |               |
-| wl_compositor                           | 6[^no_touch]     |               |
+| wl_compositor                           | 6[^no_touch]    |               |
-| wl_data_device_manager                  | 3                |               |
+| wl_data_device_manager                  | 3               |               |
-| wl_drm                                  | 2                |               |
+| wl_drm                                  | 2               |               |
-| wl_output                               | 4                |               |
+| wl_output                               | 4               |               |
-| wl_seat                                 | 9                |               |
+| wl_seat                                 | 9               |               |
-| wl_shm                                  | 2                |               |
+| wl_shm                                  | 2               |               |
-| wl_subcompositor                        | 1                |               |
+| wl_subcompositor                        | 1               |               |
-| wp_alpha_modifier_v1                    | 1                |               |
+| wp_alpha_modifier_v1                    | 1               |               |
-| wp_content_type_manager_v1              | 1                |               |
+| wp_content_type_manager_v1              | 1               |               |
-| wp_cursor_shape_manager_v1              | 1                |               |
+| wp_cursor_shape_manager_v1              | 1               |               |
-| wp_drm_lease_device_v1                  | 1                |               |
+| wp_drm_lease_device_v1                  | 1               |               |
-| wp_fractional_scale_manager_v1          | 1                |               |
+| wp_fractional_scale_manager_v1          | 1               |               |
-| wp_linux_drm_syncobj_manager_v1         | 1                |               |
+| wp_linux_drm_syncobj_manager_v1         | 1               |               |
-| wp_presentation                         | 1                |               |
+| wp_presentation                         | 1               |               |
-| wp_security_context_manager_v1          | 1                |               |
+| wp_security_context_manager_v1          | 1               |               |
-| wp_single_pixel_buffer_manager_v1       | 1                |               |
+| wp_single_pixel_buffer_manager_v1       | 1               |               |
-| wp_tearing_control_manager_v1           | 1[^no_tearing]   |               |
+| wp_tearing_control_manager_v1           | 1[^no_tearing]  |               |
-| wp_viewporter                           | 1                |               |
+| wp_viewporter                           | 1               |               |
-| xdg_activation_v1                       | 1                |               |
+| xdg_activation_v1                       | 1               |               |
-| xdg_toplevel_drag_manager_v1            | 1                |               |
+| xdg_toplevel_drag_manager_v1            | 1               |               |
-| xdg_wm_base                             | 6                |               |
+| xdg_wm_base                             | 6               |               |
-| xdg_wm_dialog_v1                        | 1                |               |
+| xdg_wm_dialog_v1                        | 1               |               |
-| zwlr_data_control_manager_v1            | 2                | Yes           |
+| zwlr_data_control_manager_v1            | 2               | Yes           |
-| zwlr_layer_shell_v1                     | 4[^no_exclusive] | No[^lsaccess] |
+| zwlr_layer_shell_v1                     | 5               | No[^lsaccess] |
-| zwlr_screencopy_manager_v1              | 3                | Yes           |
+| zwlr_screencopy_manager_v1              | 3               | Yes           |
-| zwp_idle_inhibit_manager_v1             | 1                |               |
+| zwp_idle_inhibit_manager_v1             | 1               |               |
-| zwp_input_method_manager_v2             | 1                | Yes           |
+| zwp_input_method_manager_v2             | 1               | Yes           |
-| zwp_linux_dmabuf_v1                     | 5                |               |
+| zwp_linux_dmabuf_v1                     | 5               |               |
-| zwp_pointer_constraints_v1              | 1                |               |
+| zwp_pointer_constraints_v1              | 1               |               |
-| zwp_pointer_gestures_v1                 | 3                |               |
+| zwp_pointer_gestures_v1                 | 3               |               |
-| zwp_primary_selection_device_manager_v1 | 1                |               |
+| zwp_primary_selection_device_manager_v1 | 1               |               |
-| zwp_relative_pointer_manager_v1         | 1                |               |
+| zwp_relative_pointer_manager_v1         | 1               |               |
-| zwp_tablet_manager_v2                   | 1                |               |
+| zwp_tablet_manager_v2                   | 1               |               |
-| zwp_text_input_manager_v3               | 1                |               |
+| zwp_text_input_manager_v3               | 1               |               |
-| zwp_virtual_keyboard_manager_v1         | 1                | Yes           |
+| zwp_virtual_keyboard_manager_v1         | 1               | Yes           |
-| zxdg_decoration_manager_v1              | 1                |               |
+| zxdg_decoration_manager_v1              | 1               |               |
-| zxdg_output_manager_v1                  | 3                |               |
+| zxdg_output_manager_v1                  | 3               |               |
 
 [^no_touch]: Touch input is not supported.
 [^no_tearing]: Tearing screen updates are not supported.
-[^no_exclusive]: Exclusive zones are not supported.
 [^lsaccess]: Sandboxes can restrict access to this protocol.
 [^ts_rejected]: Seat creation is always rejected.
 

release-notes.md

@@ -1,5 +1,7 @@
 # Unreleased
 
+- Add remaining layer-shell features.
+
 # 1.2.0 (2024-05-05)
 
 - Add support for wp-security-manager-v1.

src/backends/metal.rs

@@ -35,6 +35,7 @@ use {
             clonecell::{CloneCell, UnsafeCellCloneSafe},
             copyhashmap::CopyHashMap,
             errorfmt::ErrorFmt,
+            hash_map_ext::HashMapExt,
             numcell::NumCell,
             oserror::OsError,
             smallmap::SmallMap,
@@ -184,7 +185,7 @@ impl Backend for MetalBackend {
                 dev.cb.take();
             }
         }
-        for (_, dev) in self.device_holder.drm_devices.lock().drain() {
+        for dev in self.device_holder.drm_devices.lock().drain_values() {
             dev.futures.clear();
             for crtc in dev.dev.crtcs.values() {
                 crtc.connector.take();
@@ -196,13 +197,13 @@ impl Backend for MetalBackend {
                 lease.crtcs.clear();
                 lease.planes.clear();
             };
-            for (_, mut lease) in dev.dev.leases.lock().drain() {
+            for mut lease in dev.dev.leases.lock().drain_values() {
                 clear_lease(&mut lease);
             }
-            for (_, mut lease) in dev.dev.leases_to_break.lock().drain() {
+            for mut lease in dev.dev.leases_to_break.lock().drain_values() {
                 clear_lease(&mut lease);
             }
-            for (_, connector) in dev.connectors.lock().drain() {
+            for connector in dev.connectors.lock().drain_values() {
                 {
                     let d = &mut *connector.display.borrow_mut();
                     d.crtcs.clear();

src/client/objects.rs

@@ -17,7 +17,7 @@ use {
             wl_registry::WlRegistry,
             wl_seat::{tablet::zwp_tablet_tool_v2::ZwpTabletToolV2, wl_pointer::WlPointer, WlSeat},
             wl_surface::{
-                xdg_surface::{xdg_toplevel::XdgToplevel, XdgSurface},
+                xdg_surface::{xdg_popup::XdgPopup, xdg_toplevel::XdgToplevel, XdgSurface},
                 WlSurface,
             },
             wp_drm_lease_connector_v1::WpDrmLeaseConnectorV1,
@@ -33,8 +33,8 @@ use {
         wire::{
             JayOutputId, JayScreencastId, JayToplevelId, JayWorkspaceId, WlBufferId,
             WlDataSourceId, WlOutputId, WlPointerId, WlRegionId, WlRegistryId, WlSeatId,
-            WlSurfaceId, WpDrmLeaseConnectorV1Id, WpLinuxDrmSyncobjTimelineV1Id, XdgPositionerId,
+            WlSurfaceId, WpDrmLeaseConnectorV1Id, WpLinuxDrmSyncobjTimelineV1Id, XdgPopupId,
-            XdgSurfaceId, XdgToplevelId, XdgWmBaseId, ZwlrDataControlSourceV1Id,
+            XdgPositionerId, XdgSurfaceId, XdgToplevelId, XdgWmBaseId, ZwlrDataControlSourceV1Id,
             ZwpPrimarySelectionSourceV1Id, ZwpTabletToolV2Id,
         },
     },
@@ -66,6 +66,7 @@ pub struct Objects {
     pub jay_toplevels: CopyHashMap<JayToplevelId, Rc<JayToplevel>>,
     pub drm_lease_outputs: CopyHashMap<WpDrmLeaseConnectorV1Id, Rc<WpDrmLeaseConnectorV1>>,
     pub tablet_tools: CopyHashMap<ZwpTabletToolV2Id, Rc<ZwpTabletToolV2>>,
+    pub xdg_popups: CopyHashMap<XdgPopupId, Rc<XdgPopup>>,
     ids: RefCell<Vec<usize>>,
 }
 
@@ -98,6 +99,7 @@ impl Objects {
             jay_toplevels: Default::default(),
             drm_lease_outputs: Default::default(),
             tablet_tools: Default::default(),
+            xdg_popups: Default::default(),
             ids: RefCell::new(vec![]),
         }
     }
@@ -134,6 +136,7 @@ impl Objects {
         self.jay_toplevels.clear();
         self.drm_lease_outputs.clear();
         self.tablet_tools.clear();
+        self.xdg_popups.clear();
     }
 
     pub fn id<T>(&self, client_data: &Client) -> Result<T, ClientError>

src/compositor.rs

@@ -449,6 +449,10 @@ fn create_dummy_output(state: &Rc<State>) {
         workspace: Default::default(),
         seat_state: Default::default(),
         layers: Default::default(),
+        exclusive_zones: Default::default(),
+        workspace_rect: Default::default(),
+        non_exclusive_rect_rel: Default::default(),
+        non_exclusive_rect: Default::default(),
         render_data: Default::default(),
         state: state.clone(),
         is_dummy: true,

src/cursor_user.rs

@@ -6,8 +6,8 @@ use {
         state::State,
         tree::OutputNode,
         utils::{
-            clonecell::CloneCell, copyhashmap::CopyHashMap, errorfmt::ErrorFmt, rc_eq::rc_eq,
+            clonecell::CloneCell, copyhashmap::CopyHashMap, errorfmt::ErrorFmt,
-            transform_ext::TransformExt,
+            hash_map_ext::HashMapExt, rc_eq::rc_eq, transform_ext::TransformExt,
         },
     },
     std::{cell::Cell, ops::Deref, rc::Rc},
@@ -99,7 +99,7 @@ impl CursorUserGroup {
             .set(self.state.dummy_output.get().unwrap());
         self.state.remove_cursor_size(self.size.get());
         self.state.cursor_user_groups.remove(&self.id);
-        for (_, user) in self.users.lock().drain() {
+        for user in self.users.lock().drain_values() {
             user.detach();
         }
     }

src/fixed.rs

@@ -4,7 +4,7 @@ use std::{
     ops::{Add, AddAssign, Sub, SubAssign},
 };
 
-#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash)]
+#[derive(Copy, Clone, Eq, PartialEq, Ord, PartialOrd, Hash, Default)]
 #[repr(transparent)]
 pub struct Fixed(pub i32);
 

src/ifs/wl_seat/event_handling.rs

@@ -33,7 +33,7 @@ use {
         object::Version,
         state::DeviceHandlerData,
         tree::{Direction, Node, ToplevelNode},
-        utils::{bitflags::BitflagsExt, smallmap::SmallMap},
+        utils::{bitflags::BitflagsExt, hash_map_ext::HashMapExt, smallmap::SmallMap},
         wire::WlDataOfferId,
         xkbcommon::{KeyboardState, XkbState, XKB_KEY_DOWN, XKB_KEY_UP},
     },
@@ -237,7 +237,7 @@ impl WlSeatGlobal {
             | InputEvent::TabletPadStrip { time_usec, .. } => {
                 self.last_input_usec.set(time_usec);
                 if self.idle_notifications.is_not_empty() {
-                    for (_, notification) in self.idle_notifications.lock().drain() {
+                    for notification in self.idle_notifications.lock().drain_values() {
                         notification.resume.trigger();
                     }
                 }

src/ifs/wl_seat/tablet.rs

@@ -19,7 +19,10 @@ use {
         object::Version,
         time::now_usec,
         tree::{FoundNode, Node},
-        utils::{bindings::PerClientBindings, clonecell::CloneCell, copyhashmap::CopyHashMap},
+        utils::{
+            bindings::PerClientBindings, clonecell::CloneCell, copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
+        },
     },
     std::{
         cell::{Cell, RefCell},
@@ -293,18 +296,18 @@ impl WlSeatGlobal {
 
     pub fn tablet_clear(&self) {
         self.tablet.seats.clear();
-        for (_, tablet) in self.tablet.tablets.lock().drain() {
+        for tablet in self.tablet.tablets.lock().drain_values() {
             tablet.pads.clear();
             tablet.bindings.clear();
             tablet.tools.clear();
         }
-        for (_, tool) in self.tablet.tools.lock().drain() {
+        for tool in self.tablet.tools.lock().drain_values() {
             tool.cursor.detach();
             tool.opt.tool.take();
             tool.tool_owner.destroy(&tool);
             tool.bindings.clear();
         }
-        for (_, pad) in self.tablet.pads.lock().drain() {
+        for pad in self.tablet.pads.lock().drain_values() {
             pad.pad_owner.destroy(&pad);
             pad.tablet.take();
             pad.bindings.clear();
@@ -324,14 +327,14 @@ impl WlSeatGlobal {
         let Some(tablet) = self.tablet.tablets.remove(&id) else {
             return;
         };
-        for (_, tool) in tablet.tools.lock().drain() {
+        for tool in tablet.tools.lock().drain_values() {
             self.tablet_handle_remove_tool(now_usec(), tool.id);
         }
-        for (_, pad) in tablet.pads.lock().drain() {
+        for pad in tablet.pads.lock().drain_values() {
             pad.pad_owner.destroy(&pad);
             pad.tablet.take();
         }
-        for (_, binding) in tablet.bindings.lock().drain() {
+        for binding in tablet.bindings.lock().drain_values() {
             binding.send_removed();
         }
     }

src/ifs/wl_seat/tablet/pad.rs

@@ -14,7 +14,7 @@ use {
             wl_surface::WlSurface,
         },
         time::{now_usec, usec_to_msec},
-        utils::clonecell::CloneCell,
+        utils::{clonecell::CloneCell, hash_map_ext::HashMapExt},
     },
     std::{cell::Cell, rc::Rc},
 };
@@ -76,7 +76,7 @@ impl WlSeatGlobal {
         if let Some(tablet) = pad.tablet.take() {
             tablet.pads.remove(&pad.id);
         }
-        for (_, binding) in pad.bindings.lock().drain() {
+        for binding in pad.bindings.lock().drain_values() {
             binding.send_removed();
         }
     }

src/ifs/wl_seat/tablet/tool.rs

@@ -15,7 +15,7 @@ use {
         },
         rect::Rect,
         time::usec_to_msec,
-        utils::clonecell::CloneCell,
+        utils::{clonecell::CloneCell, hash_map_ext::HashMapExt},
     },
     std::{cell::Cell, rc::Rc},
 };
@@ -31,7 +31,7 @@ impl WlSeatGlobal {
         tool.opt.tool.take();
         tool.cursor.detach();
         tool.tool_owner.destroy(&tool);
-        for (_, binding) in tool.bindings.lock().drain() {
+        for binding in tool.bindings.lock().drain_values() {
             binding.send_removed();
         }
         tool.tablet.tools.remove(&id);

src/ifs/wl_seat/wl_pointer.rs

@@ -74,6 +74,7 @@ pub struct WlPointer {
     id: WlPointerId,
     pub seat: Rc<WlSeat>,
     pub tracker: Tracker<Self>,
+    last_motion: Cell<(Fixed, Fixed)>,
 }
 
 impl WlPointer {
@@ -82,10 +83,12 @@ impl WlPointer {
             id,
             seat: seat.clone(),
             tracker: Default::default(),
+            last_motion: Default::default(),
         }
     }
 
     pub fn send_enter(&self, serial: u32, surface: WlSurfaceId, x: Fixed, y: Fixed) {
+        self.last_motion.set((x, y));
         self.seat.client.event(Enter {
             self_id: self.id,
             serial,
@@ -104,6 +107,9 @@ impl WlPointer {
     }
 
     pub fn send_motion(&self, time: u32, x: Fixed, y: Fixed) {
+        if self.last_motion.replace((x, y)) == (x, y) {
+            return;
+        }
         self.seat.client.event(Motion {
             self_id: self.id,
             time,

src/ifs/wl_surface/commit_timeline.rs

@@ -4,6 +4,7 @@ use {
         utils::{
             clonecell::CloneCell,
             copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
             linkedlist::{LinkedList, LinkedNode, NodeRef},
             numcell::NumCell,
         },
@@ -102,7 +103,7 @@ impl CommitTimelines {
     }
 
     pub fn clear(&self) {
-        for (_, list) in self.gc.lock().drain() {
+        for list in self.gc.lock().drain_values() {
             break_loops(&list);
         }
     }

src/ifs/wl_surface/xdg_surface.rs

@@ -7,7 +7,7 @@ use {
         ifs::{
             wl_surface::{
                 xdg_surface::{
-                    xdg_popup::{XdgPopup, XdgPopupError},
+                    xdg_popup::{XdgPopup, XdgPopupError, XdgPopupParent},
                     xdg_toplevel::{XdgToplevel, WM_CAPABILITIES_SINCE},
                 },
                 PendingState, SurfaceExt, SurfaceRole, WlSurface, WlSurfaceError,
@@ -17,14 +17,20 @@ use {
         leaks::Tracker,
         object::Object,
         rect::Rect,
-        tree::{FindTreeResult, FoundNode, OutputNode, WorkspaceNode},
+        tree::{FindTreeResult, FoundNode, OutputNode, StackedNode, WorkspaceNode},
         utils::{
-            clonecell::CloneCell, copyhashmap::CopyHashMap, numcell::NumCell, option_ext::OptionExt,
+            clonecell::CloneCell,
+            copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
+            linkedlist::{LinkedList, LinkedNode},
+            numcell::NumCell,
+            option_ext::OptionExt,
+            rc_eq::rc_eq,
         },
         wire::{xdg_surface::*, WlSurfaceId, XdgPopupId, XdgSurfaceId},
     },
     std::{
-        cell::{Cell, RefMut},
+        cell::{Cell, RefCell, RefMut},
         fmt::Debug,
         rc::Rc,
     },
@@ -65,11 +71,72 @@ pub struct XdgSurface {
     extents: Cell<Rect>,
     pub absolute_desired_extents: Cell<Rect>,
     ext: CloneCell<Option<Rc<dyn XdgSurfaceExt>>>,
-    popups: CopyHashMap<XdgPopupId, Rc<XdgPopup>>,
+    popup_display_stack: CloneCell<Rc<LinkedList<Rc<dyn StackedNode>>>>,
+    popups: CopyHashMap<XdgPopupId, Rc<Popup>>,
     pub workspace: CloneCell<Option<Rc<WorkspaceNode>>>,
     pub tracker: Tracker<Self>,
 }
 
+struct Popup {
+    parent: Rc<XdgSurface>,
+    popup: Rc<XdgPopup>,
+    display_link: RefCell<Option<LinkedNode<Rc<dyn StackedNode>>>>,
+    workspace_link: RefCell<Option<LinkedNode<Rc<dyn StackedNode>>>>,
+}
+
+impl XdgPopupParent for Popup {
+    fn position(&self) -> Rect {
+        self.parent.absolute_desired_extents.get()
+    }
+
+    fn remove_popup(&self) {
+        self.parent.popups.remove(&self.popup.id);
+    }
+
+    fn output(&self) -> Rc<OutputNode> {
+        self.parent.surface.output.get()
+    }
+
+    fn has_workspace_link(&self) -> bool {
+        self.workspace_link.borrow().is_some()
+    }
+
+    fn post_commit(&self) {
+        let mut wl = self.workspace_link.borrow_mut();
+        let mut dl = self.display_link.borrow_mut();
+        let ws = match self.parent.workspace.get() {
+            Some(ws) => ws,
+            _ => {
+                log::info!("no ws");
+                return;
+            }
+        };
+        let surface = &self.popup.xdg.surface;
+        let state = &surface.client.state;
+        if surface.buffer.is_some() {
+            if wl.is_none() {
+                self.popup.xdg.set_workspace(&ws);
+                *wl = Some(ws.stacked.add_last(self.popup.clone()));
+                *dl = Some(
+                    self.parent
+                        .popup_display_stack
+                        .get()
+                        .add_last(self.popup.clone()),
+                );
+                state.tree_changed();
+                self.popup.set_visible(self.parent.surface.visible.get());
+            }
+        } else {
+            if wl.take().is_some() {
+                drop(wl);
+                drop(dl);
+                self.popup.set_visible(false);
+                self.popup.destroy_node();
+            }
+        }
+    }
+}
+
 #[derive(Default, Debug)]
 pub struct PendingXdgSurfaceData {
     geometry: Option<Rect>,
@@ -115,6 +182,7 @@ impl XdgSurface {
             extents: Cell::new(Default::default()),
             absolute_desired_extents: Cell::new(Default::default()),
             ext: Default::default(),
+            popup_display_stack: CloneCell::new(surface.client.state.root.stacked.clone()),
             popups: Default::default(),
             workspace: Default::default(),
             tracker: Default::default(),
@@ -139,7 +207,7 @@ impl XdgSurface {
         self.surface.set_output(&ws.output.get());
         let pu = self.popups.lock();
         for pu in pu.values() {
-            pu.xdg.set_workspace(ws);
+            pu.popup.xdg.set_workspace(ws);
         }
     }
 
@@ -147,7 +215,7 @@ impl XdgSurface {
         self.surface.set_output(output);
         let pu = self.popups.lock();
         for pu in pu.values() {
-            pu.xdg.set_output(output);
+            pu.popup.xdg.set_output(output);
         }
     }
 
@@ -171,9 +239,8 @@ impl XdgSurface {
     fn destroy_node(&self) {
         self.workspace.set(None);
         self.surface.destroy_node();
-        let popups = self.popups.lock();
+        for popup in self.popups.lock().drain_values() {
-        for popup in popups.values() {
+            popup.popup.destroy_node();
-            popup.destroy_node();
         }
     }
 
@@ -182,7 +249,8 @@ impl XdgSurface {
         self.surface.detach_node(false);
         let popups = self.popups.lock();
         for popup in popups.values() {
-            popup.detach_node();
+            let _v = popup.workspace_link.borrow_mut().take();
+            popup.popup.detach_node();
         }
     }
 
@@ -216,6 +284,19 @@ impl XdgSurface {
             p.xdg_surface.get_or_insert_default_ext()
         })
     }
+
+    pub fn set_popup_stack(&self, stack: &Rc<LinkedList<Rc<dyn StackedNode>>>) {
+        let prev = self.popup_display_stack.set(stack.clone());
+        if rc_eq(&prev, stack) {
+            return;
+        }
+        for popup in self.popups.lock().values() {
+            if let Some(dl) = &*popup.display_link.borrow() {
+                stack.add_last_existing(dl);
+            }
+            popup.popup.xdg.set_popup_stack(stack);
+        }
+    }
 }
 
 impl XdgSurfaceRequestHandler for XdgSurface {
@@ -279,11 +360,18 @@ impl XdgSurfaceRequestHandler for XdgSurface {
             );
             return Err(XdgSurfaceError::AlreadyConstructed);
         }
-        let popup = Rc::new(XdgPopup::new(req.id, slf, parent.as_ref(), &positioner)?);
+        let popup = Rc::new(XdgPopup::new(req.id, slf, &positioner)?);
         track!(self.surface.client, popup);
         self.surface.client.add_client_obj(&popup)?;
         if let Some(parent) = &parent {
-            parent.popups.set(req.id, popup.clone());
+            let user = Rc::new(Popup {
+                parent: parent.clone(),
+                popup: popup.clone(),
+                display_link: Default::default(),
+                workspace_link: Default::default(),
+            });
+            popup.parent.set(Some(user.clone()));
+            parent.popups.set(req.id, user);
         }
         self.ext.set(Some(popup));
         Ok(())
@@ -341,21 +429,29 @@ impl XdgSurface {
     fn update_popup_positions(&self) {
         let popups = self.popups.lock();
         for popup in popups.values() {
-            popup.update_absolute_position();
+            popup.popup.update_absolute_position();
         }
     }
 
     fn set_visible(&self, visible: bool) {
         self.surface.set_visible(visible);
         for popup in self.popups.lock().values() {
-            popup.set_visible(visible);
+            popup.popup.set_visible(visible);
         }
     }
 
     fn restack_popups(&self) {
-        for popup in self.popups.lock().values() {
+        if self.popups.is_empty() {
-            popup.restack();
+            return;
         }
+        let stack = self.popup_display_stack.get();
+        for popup in self.popups.lock().values() {
+            if let Some(dl) = &*popup.display_link.borrow() {
+                stack.add_last_existing(dl);
+            }
+            popup.popup.xdg.restack_popups();
+        }
+        self.surface.client.state.tree_changed();
     }
 }
 

src/ifs/wl_surface/xdg_surface/xdg_popup.rs

@@ -16,10 +16,10 @@ use {
         rect::Rect,
         renderer::Renderer,
         tree::{
-            FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor, StackedNode,
+            FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor, OutputNode,
-            WorkspaceNode,
+            StackedNode,
         },
-        utils::{clonecell::CloneCell, linkedlist::LinkedNode},
+        utils::clonecell::CloneCell,
         wire::{xdg_popup::*, XdgPopupId},
     },
     std::{
@@ -35,14 +35,20 @@ const INVALID_GRAB: u32 = 1;
 
 tree_id!(PopupId);
 
+pub trait XdgPopupParent {
+    fn position(&self) -> Rect;
+    fn remove_popup(&self);
+    fn output(&self) -> Rc<OutputNode>;
+    fn has_workspace_link(&self) -> bool;
+    fn post_commit(&self);
+}
+
 pub struct XdgPopup {
-    id: XdgPopupId,
+    pub id: XdgPopupId,
     node_id: PopupId,
     pub xdg: Rc<XdgSurface>,
-    pub(super) parent: CloneCell<Option<Rc<XdgSurface>>>,
+    pub(in super::super) parent: CloneCell<Option<Rc<dyn XdgPopupParent>>>,
     relative_position: Cell<Rect>,
-    display_link: RefCell<Option<LinkedNode<Rc<dyn StackedNode>>>>,
-    workspace_link: RefCell<Option<LinkedNode<Rc<dyn StackedNode>>>>,
     pos: RefCell<XdgPositioned>,
     pub tracker: Tracker<Self>,
     seat_state: NodeSeatState,
@@ -59,7 +65,6 @@ impl XdgPopup {
     pub fn new(
         id: XdgPopupId,
         xdg: &Rc<XdgSurface>,
-        parent: Option<&Rc<XdgSurface>>,
         pos: &Rc<XdgPositioner>,
     ) -> Result<Self, XdgPopupError> {
         let pos = pos.value();
@@ -70,10 +75,8 @@ impl XdgPopup {
             id,
             node_id: xdg.surface.client.state.node_ids.next(),
             xdg: xdg.clone(),
-            parent: CloneCell::new(parent.cloned()),
+            parent: Default::default(),
             relative_position: Cell::new(Default::default()),
-            display_link: RefCell::new(None),
-            workspace_link: RefCell::new(None),
             pos: RefCell::new(pos),
             tracker: Default::default(),
             seat_state: Default::default(),
@@ -105,17 +108,13 @@ impl XdgPopup {
             .event(PopupDone { self_id: self.id })
     }
 
-    fn update_position(&self, parent: &XdgSurface) -> Result<(), XdgPopupError> {
+    fn update_position(&self, parent: &dyn XdgPopupParent) {
-        // let parent = parent.extents.get();
         let positioner = self.pos.borrow_mut();
-        // if !parent.contains_rect(&positioner.ar) {
+        let parent_abs = parent.position();
-        //     return Err(XdgPopupError::AnchorRectOutside);
-        // }
-        let parent_abs = parent.absolute_desired_extents.get();
         let mut rel_pos = positioner.get_position(false, false);
         let mut abs_pos = rel_pos.move_(parent_abs.x1(), parent_abs.y1());
-        if let Some(ws) = parent.workspace.get() {
+        {
-            let output_pos = ws.output.get().global.pos.get();
+            let output_pos = parent.output().global.pos.get();
             let mut overflow = output_pos.get_overflow(&abs_pos);
             if !overflow.is_contained() {
                 let mut flip_x = positioner.ca.contains(CA_FLIP_X) && overflow.x_overflow();
@@ -146,17 +145,21 @@ impl XdgPopup {
                 }
                 let (mut dx, mut dy) = (0, 0);
                 if positioner.ca.contains(CA_SLIDE_X) && overflow.x_overflow() {
-                    dx = if overflow.left > 0 || overflow.left + overflow.right > 0 {
+                    dx = if overflow.left + overflow.right > 0 {
                         parent_abs.x1() - abs_pos.x1()
+                    } else if overflow.left > 0 {
+                        overflow.left
                     } else {
-                        parent_abs.x2() - abs_pos.x2()
+                        -overflow.right
                     };
                 }
                 if positioner.ca.contains(CA_SLIDE_Y) && overflow.y_overflow() {
-                    dy = if overflow.top > 0 || overflow.top + overflow.bottom > 0 {
+                    dy = if overflow.top + overflow.bottom > 0 {
                         parent_abs.y1() - abs_pos.y1()
+                    } else if overflow.top > 0 {
+                        overflow.top
                     } else {
-                        parent_abs.y2() - abs_pos.y2()
+                        -overflow.bottom
                     };
                 }
                 if dx != 0 || dy != 0 {
@@ -174,32 +177,35 @@ impl XdgPopup {
                     dy2 = -overflow.bottom.max(0);
                 }
                 if dx1 > 0 || dx2 < 0 || dy1 > 0 || dy2 < 0 {
-                    abs_pos = Rect::new(
+                    let maybe_abs_pos = Rect::new(
                         abs_pos.x1() + dx1,
                         abs_pos.y1() + dy1,
                         abs_pos.x2() + dx2,
                         abs_pos.y2() + dy2,
-                    )
+                    );
-                    .unwrap();
+                    // If the popup is completely outside the output, this will fail. Just
-                    rel_pos = Rect::new_sized(
+                    // use its position as is.
-                        abs_pos.x1() - parent_abs.x1(),
+                    if let Some(maybe_abs_pos) = maybe_abs_pos {
-                        abs_pos.y1() - parent_abs.y1(),
+                        abs_pos = maybe_abs_pos;
-                        abs_pos.width(),
+                        rel_pos = Rect::new_sized(
-                        abs_pos.height(),
+                            abs_pos.x1() - parent_abs.x1(),
-                    )
+                            abs_pos.y1() - parent_abs.y1(),
-                    .unwrap();
+                            abs_pos.width(),
+                            abs_pos.height(),
+                        )
+                        .unwrap();
+                    }
                 }
             }
         }
         self.relative_position.set(rel_pos);
         self.xdg.set_absolute_desired_extents(&abs_pos);
-        Ok(())
     }
 
     pub fn update_absolute_position(&self) {
         if let Some(parent) = self.parent.get() {
             let rel = self.relative_position.get();
-            let parent = parent.absolute_desired_extents.get();
+            let parent = parent.position();
             self.xdg
                 .set_absolute_desired_extents(&rel.move_(parent.x1(), parent.y1()));
         }
@@ -211,15 +217,8 @@ impl XdgPopupRequestHandler for XdgPopup {
 
     fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
         self.destroy_node();
-        {
-            if let Some(parent) = self.parent.take() {
-                parent.popups.remove(&self.id);
-            }
-        }
         self.xdg.ext.set(None);
         self.xdg.surface.client.remove_obj(self)?;
-        *self.display_link.borrow_mut() = None;
-        *self.workspace_link.borrow_mut() = None;
         Ok(())
     }
 
@@ -230,7 +229,7 @@ impl XdgPopupRequestHandler for XdgPopup {
     fn reposition(&self, req: Reposition, _slf: &Rc<Self>) -> Result<(), Self::Error> {
         *self.pos.borrow_mut() = self.xdg.surface.client.lookup(req.positioner)?.value();
         if let Some(parent) = self.parent.get() {
-            self.update_position(&parent)?;
+            self.update_position(&*parent);
             let rel = self.relative_position.get();
             self.send_repositioned(req.token);
             self.send_configure(rel.x1(), rel.y1(), rel.width(), rel.height());
@@ -241,10 +240,6 @@ impl XdgPopupRequestHandler for XdgPopup {
 }
 
 impl XdgPopup {
-    fn get_parent_workspace(&self) -> Option<Rc<WorkspaceNode>> {
-        self.parent.get()?.workspace.get()
-    }
-
     pub fn set_visible(&self, visible: bool) {
         // log::info!("set visible = {}", visible);
         self.set_visible_prepared.set(false);
@@ -253,27 +248,18 @@ impl XdgPopup {
     }
 
     pub fn destroy_node(&self) {
-        let _v = self.display_link.borrow_mut().take();
-        let _v = self.workspace_link.borrow_mut().take();
         self.xdg.destroy_node();
         self.seat_state.destroy_node(self);
+        if let Some(parent) = self.parent.take() {
+            parent.remove_popup();
+        }
+        self.send_popup_done();
     }
 
     pub fn detach_node(&self) {
-        let _v = self.workspace_link.borrow_mut().take();
         self.xdg.detach_node();
         self.seat_state.destroy_node(self);
     }
-
-    pub fn restack(&self) {
-        let state = &self.xdg.surface.client.state;
-        let dl = self.display_link.borrow();
-        if let Some(dl) = &*dl {
-            state.root.stacked.add_last_existing(dl);
-        }
-        self.xdg.restack_popups();
-        state.tree_changed();
-    }
 }
 
 object_base! {
@@ -284,13 +270,10 @@ object_base! {
 impl Object for XdgPopup {
     fn break_loops(&self) {
         self.destroy_node();
-        self.parent.set(None);
-        *self.display_link.borrow_mut() = None;
-        *self.workspace_link.borrow_mut() = None;
     }
 }
 
-simple_add_obj!(XdgPopup);
+dedicated_add_obj!(XdgPopup, XdgPopupId, xdg_popups);
 
 impl Node for XdgPopup {
     fn node_id(&self) -> NodeId {
@@ -374,7 +357,10 @@ impl StackedNode for XdgPopup {
     }
 
     fn stacked_has_workspace_link(&self) -> bool {
-        self.workspace_link.borrow().is_some()
+        match self.parent.get() {
+            Some(p) => p.has_workspace_link(),
+            _ => false,
+        }
     }
 
     fn stacked_absolute_position_constrains_input(&self) -> bool {
@@ -385,7 +371,7 @@ impl StackedNode for XdgPopup {
 impl XdgSurfaceExt for XdgPopup {
     fn initial_configure(self: Rc<Self>) -> Result<(), XdgSurfaceError> {
         if let Some(parent) = self.parent.get() {
-            self.update_position(&parent)?;
+            self.update_position(&*parent);
             let rel = self.relative_position.get();
             self.send_configure(rel.x1(), rel.y1(), rel.width(), rel.height());
         }
@@ -393,38 +379,8 @@ impl XdgSurfaceExt for XdgPopup {
     }
 
     fn post_commit(self: Rc<Self>) {
-        let mut wl = self.workspace_link.borrow_mut();
+        if let Some(parent) = self.parent.get() {
-        let mut dl = self.display_link.borrow_mut();
+            parent.post_commit();
-        let ws = match self.get_parent_workspace() {
-            Some(ws) => ws,
-            _ => {
-                log::info!("no ws");
-                return;
-            }
-        };
-        let surface = &self.xdg.surface;
-        let state = &surface.client.state;
-        if surface.buffer.is_some() {
-            if wl.is_none() {
-                self.xdg.set_workspace(&ws);
-                *wl = Some(ws.stacked.add_last(self.clone()));
-                *dl = Some(state.root.stacked.add_last(self.clone()));
-                state.tree_changed();
-                self.set_visible(
-                    self.parent
-                        .get()
-                        .map(|p| p.surface.visible.get())
-                        .unwrap_or(false),
-                );
-            }
-        } else {
-            if wl.take().is_some() {
-                drop(wl);
-                drop(dl);
-                self.set_visible(false);
-                self.destroy_node();
-                self.send_popup_done();
-            }
         }
     }
 

src/ifs/wl_surface/xdg_surface/xdg_toplevel.rs

@@ -29,7 +29,7 @@ use {
             OutputNode, ToplevelData, ToplevelNode, ToplevelNodeBase, ToplevelNodeId,
             WorkspaceNode,
         },
-        utils::clonecell::CloneCell,
+        utils::{clonecell::CloneCell, hash_map_ext::HashMapExt},
         wire::{xdg_toplevel::*, XdgToplevelId},
     },
     ahash::{AHashMap, AHashSet},
@@ -218,7 +218,7 @@ impl XdgToplevelRequestHandler for XdgToplevel {
                 Some(p) => Some(p.children.borrow_mut()),
                 _ => None,
             };
-            for (_, child) in children.drain() {
+            for child in children.drain_values() {
                 child.parent.set(parent.clone());
                 if let Some(parent_children) = &mut parent_children {
                     parent_children.insert(child.id, child);
@@ -418,7 +418,7 @@ impl XdgToplevel {
             {
                 let new_parent = self.parent.get();
                 let mut children = self.children.borrow_mut();
-                for (_, child) in children.drain() {
+                for child in children.drain_values() {
                     child.parent.set(new_parent.clone());
                 }
             }

src/ifs/wl_surface/zwlr_layer_surface_v1.rs

@@ -4,23 +4,32 @@ use {
         ifs::{
             wl_output::OutputGlobalOpt,
             wl_seat::NodeSeatState,
-            wl_surface::{PendingState, SurfaceExt, SurfaceRole, WlSurface, WlSurfaceError},
+            wl_surface::{
+                xdg_surface::xdg_popup::{XdgPopup, XdgPopupParent},
+                PendingState, SurfaceExt, SurfaceRole, WlSurface, WlSurfaceError,
+            },
             zwlr_layer_shell_v1::{ZwlrLayerShellV1, OVERLAY},
         },
         leaks::Tracker,
         object::Object,
         rect::Rect,
         renderer::Renderer,
-        tree::{FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor},
+        tree::{
+            FindTreeResult, FindTreeUsecase, FoundNode, Node, NodeId, NodeVisitor, OutputNode,
+            StackedNode,
+        },
         utils::{
-            bitflags::BitflagsExt, cell_ext::CellExt, linkedlist::LinkedNode, numcell::NumCell,
+            bitflags::BitflagsExt,
+            copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
+            linkedlist::{LinkedList, LinkedNode},
+            numcell::NumCell,
             option_ext::OptionExt,
         },
-        wire::{zwlr_layer_surface_v1::*, WlSurfaceId, ZwlrLayerSurfaceV1Id},
+        wire::{zwlr_layer_surface_v1::*, WlSurfaceId, XdgPopupId, ZwlrLayerSurfaceV1Id},
     },
     std::{
-        cell::{Cell, RefMut},
+        cell::{Cell, RefCell, RefMut},
-        mem,
         ops::Deref,
         rc::Rc,
     },
@@ -47,30 +56,74 @@ pub struct ZwlrLayerSurfaceV1 {
     pub output: Rc<OutputGlobalOpt>,
     pub namespace: String,
     pub tracker: Tracker<Self>,
-    output_pos: Cell<Rect>,
+    output_extents: Cell<Rect>,
     pos: Cell<Rect>,
     mapped: Cell<bool>,
     layer: Cell<u32>,
     requested_serial: NumCell<u32>,
-    acked_serial: Cell<Option<u32>>,
     size: Cell<(i32, i32)>,
     anchor: Cell<u32>,
-    exclusive_zone: Cell<i32>,
+    exclusive_zone: Cell<ExclusiveZone>,
     margin: Cell<(i32, i32, i32, i32)>,
     keyboard_interactivity: Cell<u32>,
     link: Cell<Option<LinkedNode<Rc<Self>>>>,
     seat_state: NodeSeatState,
+    last_configure: Cell<(i32, i32)>,
+    exclusive_edge: Cell<Option<u32>>,
+    exclusive_size: Cell<ExclusiveSize>,
+    popups: CopyHashMap<XdgPopupId, Rc<Popup>>,
+}
+
+#[derive(Copy, Clone, Debug, Default, PartialEq, Eq)]
+pub struct ExclusiveSize {
+    pub top: i32,
+    pub right: i32,
+    pub bottom: i32,
+    pub left: i32,
+}
+
+impl ExclusiveSize {
+    pub fn is_empty(&self) -> bool {
+        *self == ExclusiveSize::default()
+    }
+
+    pub fn is_not_empty(&self) -> bool {
+        !self.is_empty()
+    }
+
+    pub fn max(&self, other: &Self) -> Self {
+        Self {
+            top: self.top.max(other.top),
+            right: self.right.max(other.right),
+            bottom: self.bottom.max(other.bottom),
+            left: self.left.max(other.left),
+        }
+    }
+}
+
+#[derive(Copy, Clone, Debug, PartialEq, Eq)]
+pub enum ExclusiveZone {
+    MoveSelf,
+    FixedSelf,
+    Acquire(i32),
+}
+
+struct Popup {
+    parent: Rc<ZwlrLayerSurfaceV1>,
+    popup: Rc<XdgPopup>,
+    stack: Rc<LinkedList<Rc<dyn StackedNode>>>,
+    stack_link: RefCell<Option<LinkedNode<Rc<dyn StackedNode>>>>,
 }
 
 #[derive(Default)]
 pub struct PendingLayerSurfaceData {
     size: Option<(i32, i32)>,
     anchor: Option<u32>,
-    exclusive_zone: Option<i32>,
+    exclusive_zone: Option<ExclusiveZone>,
     margin: Option<(i32, i32, i32, i32)>,
     keyboard_interactivity: Option<u32>,
     layer: Option<u32>,
-    any: bool,
+    exclusive_edge: Option<u32>,
 }
 
 impl PendingLayerSurfaceData {
@@ -88,7 +141,6 @@ impl PendingLayerSurfaceData {
         opt!(margin);
         opt!(keyboard_interactivity);
         opt!(layer);
-        self.any |= mem::take(&mut next.any);
     }
 }
 
@@ -110,19 +162,22 @@ impl ZwlrLayerSurfaceV1 {
             output: output.clone(),
             namespace: namespace.to_string(),
             tracker: Default::default(),
-            output_pos: Default::default(),
+            output_extents: Default::default(),
             pos: Default::default(),
             mapped: Cell::new(false),
             layer: Cell::new(layer),
             requested_serial: Default::default(),
-            acked_serial: Cell::new(None),
             size: Cell::new((0, 0)),
             anchor: Cell::new(0),
-            exclusive_zone: Cell::new(0),
+            exclusive_zone: Cell::new(ExclusiveZone::MoveSelf),
             margin: Cell::new((0, 0, 0, 0)),
             keyboard_interactivity: Cell::new(0),
             link: Cell::new(None),
             seat_state: Default::default(),
+            last_configure: Default::default(),
+            exclusive_edge: Default::default(),
+            exclusive_size: Default::default(),
+            popups: Default::default(),
         }
     }
 
@@ -167,7 +222,6 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
         }
         let mut pending = self.pending();
         pending.size = Some((req.width as _, req.height as _));
-        pending.any = true;
         Ok(())
     }
 
@@ -177,7 +231,6 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
         }
         let mut pending = self.pending();
         pending.anchor = Some(req.anchor);
-        pending.any = true;
         Ok(())
     }
 
@@ -187,15 +240,27 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
         _slf: &Rc<Self>,
     ) -> Result<(), Self::Error> {
         let mut pending = self.pending();
-        pending.exclusive_zone = Some(req.zone);
+        let zone = if req.zone < 0 {
-        pending.any = true;
+            ExclusiveZone::FixedSelf
+        } else if req.zone == 0 {
+            ExclusiveZone::MoveSelf
+        } else if req.zone > u16::MAX as i32 {
+            return Err(ZwlrLayerSurfaceV1Error::ExcessiveExclusive);
+        } else {
+            ExclusiveZone::Acquire(req.zone)
+        };
+        pending.exclusive_zone = Some(zone);
         Ok(())
     }
 
     fn set_margin(&self, req: SetMargin, _slf: &Rc<Self>) -> Result<(), Self::Error> {
         let mut pending = self.pending();
+        for s in [req.top, req.right, req.bottom, req.left] {
+            if (s as i64).abs() > u16::MAX as i64 {
+                return Err(ZwlrLayerSurfaceV1Error::ExcessiveMargin);
+            }
+        }
         pending.margin = Some((req.top, req.right, req.bottom, req.left));
-        pending.any = true;
         Ok(())
     }
 
@@ -211,20 +276,35 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
         }
         let mut pending = self.pending();
         pending.keyboard_interactivity = Some(req.keyboard_interactivity);
-        pending.any = true;
         Ok(())
     }
 
-    fn get_popup(&self, _req: GetPopup, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+    fn get_popup(&self, req: GetPopup, slf: &Rc<Self>) -> Result<(), Self::Error> {
+        let popup = self.client.lookup(req.popup)?;
+        if popup.parent.is_some() {
+            return Err(ZwlrLayerSurfaceV1Error::PopupHasParent);
+        }
+        let stack = self.client.state.root.stacked_above_layers.clone();
+        popup.xdg.set_popup_stack(&stack);
+        let user = Rc::new(Popup {
+            parent: slf.clone(),
+            popup: popup.clone(),
+            stack,
+            stack_link: Default::default(),
+        });
+        popup.parent.set(Some(user.clone()));
+        self.popups.set(popup.id, user);
         Ok(())
     }
 
-    fn ack_configure(&self, req: AckConfigure, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+    fn ack_configure(&self, _req: AckConfigure, _slf: &Rc<Self>) -> Result<(), Self::Error> {
-        self.acked_serial.set(Some(req.serial));
         Ok(())
     }
 
     fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
+        if self.popups.is_not_empty() {
+            return Err(ZwlrLayerSurfaceV1Error::HasPopups);
+        }
         self.destroy_node();
         self.client.remove_obj(self)?;
         self.surface.unset_ext();
@@ -237,18 +317,77 @@ impl ZwlrLayerSurfaceV1RequestHandler for ZwlrLayerSurfaceV1 {
         }
         let mut pending = self.pending();
         pending.layer = Some(req.layer);
-        pending.any = true;
+        Ok(())
+    }
+
+    fn set_exclusive_edge(
+        &self,
+        req: SetExclusiveEdge,
+        _slf: &Rc<Self>,
+    ) -> Result<(), Self::Error> {
+        if req.edge & !(LEFT | RIGHT | TOP | BOTTOM) != 0 {
+            return Err(ZwlrLayerSurfaceV1Error::UnknownAnchor(req.edge));
+        }
+        if req.edge.count_ones() > 1 {
+            return Err(ZwlrLayerSurfaceV1Error::TooManyExclusiveEdges);
+        }
+        let mut pending = self.pending();
+        if req.edge == 0 {
+            pending.exclusive_edge = None;
+        } else {
+            pending.exclusive_edge = Some(req.edge);
+        }
         Ok(())
     }
 }
 
 impl ZwlrLayerSurfaceV1 {
-    fn pre_commit(&self, pending: &mut PendingState) -> Result<(), ZwlrLayerSurfaceV1Error> {
+    pub fn exclusive_size(&self) -> ExclusiveSize {
-        let Some(global) = self.output.get() else {
+        self.exclusive_size.get()
-            return Ok(());
+    }
+
+    fn update_exclusive_size(&self) {
+        let exclusive_edge = {
+            if let Some(ee) = self.exclusive_edge.get() {
+                Some(ee)
+            } else {
+                let anchor = self.anchor.get();
+                let edges = anchor.count_ones();
+                if edges == 1 {
+                    Some(anchor)
+                } else if edges == 3 {
+                    match (!anchor) & (TOP | BOTTOM | LEFT | RIGHT) {
+                        TOP => Some(BOTTOM),
+                        BOTTOM => Some(TOP),
+                        LEFT => Some(RIGHT),
+                        RIGHT => Some(LEFT),
+                        _ => None,
+                    }
+                } else {
+                    None
+                }
+            }
         };
+        let mut exclusive_size = ExclusiveSize::default();
+        if let (ExclusiveZone::Acquire(s), Some(edge)) = (self.exclusive_zone.get(), exclusive_edge)
+        {
+            match edge {
+                TOP => exclusive_size.top = s,
+                RIGHT => exclusive_size.right = s,
+                BOTTOM => exclusive_size.bottom = s,
+                LEFT => exclusive_size.left = s,
+                _ => {}
+            }
+        }
+        if self.exclusive_size.replace(exclusive_size) != exclusive_size {
+            if let Some(output) = self.output.node.get() {
+                output.update_exclusive_zones();
+            }
+        }
+    }
+
+    fn pre_commit(&self, pending: &mut PendingState) -> Result<(), ZwlrLayerSurfaceV1Error> {
         let pending = pending.layer_surface.get_or_insert_default_ext();
-        let mut send_configure = mem::replace(&mut pending.any, false);
         if let Some(size) = pending.size.take() {
             self.size.set(size);
         }
@@ -267,84 +406,152 @@ impl ZwlrLayerSurfaceV1 {
         if let Some(layer) = pending.layer.take() {
             self.layer.set(layer);
         }
-        {
+        if let Some(edge) = pending.exclusive_edge.take() {
-            let (mut width, mut height) = self.size.get();
+            self.exclusive_edge.set(Some(edge));
-            let anchor = self.anchor.get();
+        }
-            if width == 0 {
+        let anchor = self.anchor.get();
-                if !anchor.contains(LEFT | RIGHT) {
+        let (width, height) = self.size.get();
-                    return Err(ZwlrLayerSurfaceV1Error::WidthZero);
+        if width == 0 && !anchor.contains(LEFT | RIGHT) {
-                }
+            return Err(ZwlrLayerSurfaceV1Error::WidthZero);
-                send_configure = true;
+        }
-                width = global.position().width();
+        if height == 0 && !anchor.contains(TOP | BOTTOM) {
+            return Err(ZwlrLayerSurfaceV1Error::HeightZero);
+        }
+        if let Some(ee) = self.exclusive_edge.get() {
+            if !self.anchor.get().contains(ee) {
+                return Err(ZwlrLayerSurfaceV1Error::ExclusiveEdgeNotAnchored);
             }
-            if height == 0 {
-                if !anchor.contains(TOP | BOTTOM) {
-                    return Err(ZwlrLayerSurfaceV1Error::HeightZero);
-                }
-                send_configure = true;
-                height = global.position().height();
-            }
-            self.size.set((width, height));
-        }
-        if self.acked_serial.is_none() {
-            send_configure = true;
-        }
-        if send_configure {
-            let (width, height) = self.size.get();
-            let serial = self.requested_serial.fetch_add(1) + 1;
-            self.send_configure(serial, width as _, height as _);
         }
+        self.configure();
         Ok(())
     }
 
-    pub fn output_position(&self) -> Rect {
+    fn configure(&self) {
-        self.output_pos.get()
+        let Some(node) = self.output.node() else {
-    }
-
-    pub fn position(&self) -> Rect {
-        self.pos.get()
-    }
-
-    pub fn compute_position(&self) {
-        let Some(global) = self.output.get() else {
             return;
         };
-        let (width, height) = self.size.get();
+        let (mut width, mut height) = self.size.get();
+        let (mt, mr, mb, ml) = self.margin.get();
+        let (mut available_width, mut available_height) = match self.exclusive_zone.get() {
+            ExclusiveZone::MoveSelf => node.non_exclusive_rect.get().size(),
+            _ => node.global.pos.get().size(),
+        };
+        let anchor = self.anchor.get();
+        if anchor.contains(LEFT) {
+            available_width -= ml;
+        }
+        if anchor.contains(RIGHT) {
+            available_width -= mr;
+        }
+        if anchor.contains(TOP) {
+            available_height -= mt;
+        }
+        if anchor.contains(BOTTOM) {
+            available_height -= mb;
+        }
+        if width == 0 {
+            width = available_width;
+        }
+        width = width.min(available_width).max(1);
+        if height == 0 {
+            height = available_height;
+        }
+        height = height.min(available_height).max(1);
+        let serial = self.requested_serial.fetch_add(1) + 1;
+        if self.last_configure.replace((width, height)) != (width, height) {
+            self.send_configure(serial, width as _, height as _);
+        }
+    }
+
+    pub fn output_extents(&self) -> Rect {
+        self.output_extents.get()
+    }
+
+    fn compute_position(&self) {
+        let Some(output) = self.output.node() else {
+            return;
+        };
+        let extents = self.surface.extents.get();
+        let (width, height) = extents.size();
         let mut anchor = self.anchor.get();
         if anchor == 0 {
             anchor = LEFT | RIGHT | TOP | BOTTOM;
         }
-        let opos = global.pos.get();
+        let (mt, mr, mb, ml) = self.margin.get();
+        let opos = output.global.pos.get();
+        let rect = match self.exclusive_zone.get() {
+            ExclusiveZone::MoveSelf => output.non_exclusive_rect.get(),
+            _ => opos,
+        };
+        let (owidth, oheight) = rect.size();
         let mut x1 = 0;
         let mut y1 = 0;
-        if anchor.contains(LEFT) {
+        if anchor.contains(LEFT | RIGHT) {
-            if anchor.contains(RIGHT) {
+            x1 = (owidth - width - ml - mr) / 2;
-                x1 += (opos.width() - width) / 2;
+        } else if anchor.contains(LEFT) {
-            }
+            x1 = ml;
         } else if anchor.contains(RIGHT) {
-            x1 += opos.width() - width;
+            x1 = owidth - width - mr;
         }
-        if anchor.contains(TOP) {
+        if anchor.contains(TOP | BOTTOM) {
-            if anchor.contains(BOTTOM) {
+            y1 = (oheight - height - mt - mb) / 2;
-                y1 += (opos.height() - height) / 2;
+        } else if anchor.contains(TOP) {
-            }
+            y1 = mt;
         } else if anchor.contains(BOTTOM) {
-            y1 += opos.height() - height;
+            y1 = oheight - height - mb;
+        }
+        let a_rect = Rect::new_sized(x1 + rect.x1(), y1 + rect.y1(), width, height).unwrap();
+        let o_rect = a_rect.move_(-opos.x1(), -opos.y1());
+        self.output_extents.set(o_rect);
+        let a_rect_old = self.pos.replace(a_rect);
+        let abs_x = a_rect.x1() - extents.x1();
+        let abs_y = a_rect.y1() - extents.y1();
+        self.surface.set_absolute_position(abs_x, abs_y);
+        if a_rect_old != a_rect {
+            for popup in self.popups.lock().values() {
+                popup.popup.update_absolute_position();
+            }
         }
-        let o_rect = Rect::new_sized(x1, y1, width, height).unwrap();
-        let a_rect = o_rect.move_(opos.x1(), opos.y1());
-        self.output_pos.set(o_rect);
-        self.pos.set(a_rect);
-        self.surface.set_absolute_position(a_rect.x1(), a_rect.y1());
         self.client.state.tree_changed();
     }
 
+    pub fn output_resized(&self) {
+        self.configure();
+        self.compute_position();
+    }
+
+    pub fn exclusive_zones_changed(&self) {
+        if self.exclusive_zone.get() != ExclusiveZone::MoveSelf {
+            return;
+        }
+        self.output_resized();
+    }
+
     pub fn destroy_node(&self) {
         self.link.set(None);
         self.mapped.set(false);
         self.surface.destroy_node();
         self.seat_state.destroy_node(self);
         self.client.state.tree_changed();
+        self.last_configure.take();
+        if self.exclusive_size.take().is_not_empty() {
+            if let Some(node) = self.output.node() {
+                node.update_exclusive_zones();
+            }
+        }
+        for popup in self.popups.lock().drain_values() {
+            popup.popup.destroy_node();
+        }
+    }
+
+    pub fn set_visible(&self, visible: bool) {
+        self.surface.set_visible(visible);
+        if !visible {
+            for popup in self.popups.lock().drain_values() {
+                popup.popup.set_visible(false);
+                popup.popup.destroy_node();
+            }
+        }
     }
 }
 
@@ -367,17 +574,17 @@ impl SurfaceExt for ZwlrLayerSurfaceV1 {
             if !buffer_is_some {
                 self.destroy_node();
             } else {
-                let pos = self.pos.get();
+                if self.surface.extents.get().size() != self.pos.get().size() {
-                let (width, height) = self.size.get();
-                if width != pos.width() || height != pos.height() {
                     self.compute_position();
                 }
+                self.update_exclusive_size();
             }
         } else if buffer_is_some {
             let layer = &output.layers[self.layer.get() as usize];
             self.link.set(Some(layer.add_last(self.clone())));
             self.mapped.set(true);
             self.compute_position();
+            self.update_exclusive_size();
         }
         if self.mapped.get() != was_mapped {
             output.update_visible();
@@ -444,7 +651,8 @@ impl Node for ZwlrLayerSurfaceV1 {
         tree: &mut Vec<FoundNode>,
         _usecase: FindTreeUsecase,
     ) -> FindTreeResult {
-        self.surface.find_tree_at_(x, y, tree)
+        let (dx, dy) = self.surface.extents.get().position();
+        self.surface.find_tree_at_(x + dx, y + dy, tree)
     }
 
     fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32, _bounds: Option<&Rect>) {
@@ -452,6 +660,49 @@ impl Node for ZwlrLayerSurfaceV1 {
     }
 }
 
+impl XdgPopupParent for Popup {
+    fn position(&self) -> Rect {
+        self.parent.pos.get()
+    }
+
+    fn remove_popup(&self) {
+        self.parent.popups.remove(&self.popup.id);
+    }
+
+    fn output(&self) -> Rc<OutputNode> {
+        self.parent.surface.output.get()
+    }
+
+    fn has_workspace_link(&self) -> bool {
+        false
+    }
+
+    fn post_commit(&self) {
+        let mut dl = self.stack_link.borrow_mut();
+        let output = self.output();
+        let surface = &self.popup.xdg.surface;
+        let state = &surface.client.state;
+        if surface.buffer.is_some() {
+            if dl.is_none() {
+                if self.parent.surface.visible.get() {
+                    self.popup.xdg.set_output(&output);
+                    *dl = Some(self.stack.add_last(self.popup.clone()));
+                    state.tree_changed();
+                    self.popup.set_visible(self.parent.surface.visible.get());
+                } else {
+                    self.popup.destroy_node();
+                }
+            }
+        } else {
+            if dl.take().is_some() {
+                drop(dl);
+                self.popup.set_visible(false);
+                self.popup.destroy_node();
+            }
+        }
+    }
+}
+
 object_base! {
     self = ZwlrLayerSurfaceV1;
     version = self.shell.version;
@@ -482,10 +733,22 @@ pub enum ZwlrLayerSurfaceV1Error {
     UnknownLayer(u32),
     #[error("Surface size must not be larger than 65535x65535")]
     ExcessiveSize,
+    #[error("Margin must not be larger than 65535")]
+    ExcessiveMargin,
     #[error("Unknown anchor {0}")]
     UnknownAnchor(u32),
     #[error("Unknown keyboard interactivity {0}")]
     UnknownKi(u32),
+    #[error("Surface is not anchored at exclusive edge")]
+    ExclusiveEdgeNotAnchored,
+    #[error("Request must contain exactly one edge")]
+    TooManyExclusiveEdges,
+    #[error("Exclusive zone not be larger than 65535")]
+    ExcessiveExclusive,
+    #[error("Popup already has a parent")]
+    PopupHasParent,
+    #[error("Surface still has popups")]
+    HasPopups,
 }
 efrom!(ZwlrLayerSurfaceV1Error, WlSurfaceError);
 efrom!(ZwlrLayerSurfaceV1Error, ClientError);

src/ifs/zwlr_layer_shell_v1.rs

@@ -107,7 +107,7 @@ impl Global for ZwlrLayerShellV1Global {
     }
 
     fn version(&self) -> u32 {
-        4
+        5
     }
 
     fn required_caps(&self) -> ClientCaps {

src/ifs/zwp_linux_buffer_params_v1.rs

@@ -5,7 +5,7 @@ use {
         ifs::{wl_buffer::WlBuffer, zwp_linux_dmabuf_v1::ZwpLinuxDmabufV1},
         leaks::Tracker,
         object::Object,
-        utils::errorfmt::ErrorFmt,
+        utils::{errorfmt::ErrorFmt, hash_map_ext::HashMapExt},
         video::dmabuf::{DmaBuf, DmaBufPlane, PlaneVec, MAX_PLANES},
         wire::{zwp_linux_buffer_params_v1::*, WlBufferId, ZwpLinuxBufferParamsV1Id},
     },
@@ -90,7 +90,7 @@ impl ZwpLinuxBufferParamsV1 {
             modifier,
             planes: PlaneVec::new(),
         };
-        let mut planes: Vec<_> = self.planes.borrow_mut().drain().map(|v| v.1).collect();
+        let mut planes: Vec<_> = self.planes.borrow_mut().drain_values().collect();
         planes.sort_by_key(|a| a.plane_idx);
         for (i, p) in planes.into_iter().enumerate() {
             if p.plane_idx as usize != i {

src/it/test_transport.rs

@@ -15,6 +15,7 @@ use {
             bitfield::Bitfield,
             buffd::{BufFdIn, BufFdOut, MsgFormatter, MsgParser, OutBuffer, OutBufferSwapchain},
             copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
             stack::Stack,
             vec_ext::VecExt,
         },
@@ -105,7 +106,7 @@ impl TestTransport {
     pub fn kill(&self) {
         self.outgoing.take();
         self.incoming.take();
-        for (_, object) in self.objects.lock().drain() {
+        for object in self.objects.lock().drain_values() {
             object.on_remove(self);
         }
     }

src/leaks.rs

@@ -43,6 +43,7 @@ mod leaks {
         crate::{
             client::ClientId,
             utils::{
+                hash_map_ext::HashMapExt,
                 ptr_ext::{MutPtrExt, PtrExt},
                 windows::WindowsExt,
             },
@@ -157,7 +158,7 @@ mod leaks {
             if map.is_empty() {
                 log::info!("No leaks");
             }
-            for (_, mut objs) in map.drain() {
+            for mut objs in map.drain_values() {
                 if objs.len() == 0 {
                     continue;
                 }

src/pipewire/pw_con.rs

@@ -23,6 +23,7 @@ use {
             clonecell::CloneCell,
             copyhashmap::CopyHashMap,
             errorfmt::ErrorFmt,
+            hash_map_ext::HashMapExt,
             numcell::NumCell,
             oserror::OsError,
             xrd::xrd,
@@ -122,7 +123,7 @@ impl PwCon {
     }
 
     pub fn kill(&self) {
-        for (_, obj) in self.objects.lock().drain() {
+        for obj in self.objects.lock().drain_values() {
             obj.break_loops();
         }
         self.io.shutdown();

src/portal/ptl_display.rs

@@ -8,7 +8,7 @@ use {
         },
         utils::{
             bitflags::BitflagsExt, clonecell::CloneCell, copyhashmap::CopyHashMap,
-            errorfmt::ErrorFmt, oserror::OsError,
+            errorfmt::ErrorFmt, hash_map_ext::HashMapExt, oserror::OsError,
         },
         video::drm::Drm,
         wire::{
@@ -191,7 +191,7 @@ impl UsrJayRenderCtxOwner for PortalDisplay {
 impl UsrConOwner for PortalDisplay {
     fn killed(&self) {
         log::info!("Removing display {}", self.id);
-        for (_, sc) in self.screencasts.lock().drain() {
+        for sc in self.screencasts.lock().drain_values() {
             sc.kill();
         }
         self.windows.clear();

src/portal/ptl_screencast.rs

@@ -21,6 +21,7 @@ use {
         utils::{
             clonecell::{CloneCell, UnsafeCellCloneSafe},
             copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
         },
         video::dmabuf::{DmaBuf, PlaneVec},
         wire::jay_screencast::Ready,
@@ -267,7 +268,7 @@ impl ScreencastSession {
             ScreencastPhase::Terminated => {}
             ScreencastPhase::Selecting(s) => {
                 s.core.reply.err("Session has been terminated");
-                for (_, gui) in s.guis.lock().drain() {
+                for gui in s.guis.lock().drain_values() {
                     gui.kill(false);
                 }
             }

src/portal/ptl_screencast/screencast_gui.rs

@@ -13,7 +13,7 @@ use {
             },
         },
         theme::Color,
-        utils::copyhashmap::CopyHashMap,
+        utils::{copyhashmap::CopyHashMap, hash_map_ext::HashMapExt},
         wl_usr::usr_ifs::{
             usr_jay_select_toplevel::UsrJaySelectToplevelOwner,
             usr_jay_select_workspace::UsrJaySelectWorkspaceOwner, usr_jay_toplevel::UsrJayToplevel,
@@ -53,7 +53,7 @@ enum ButtonRole {
 
 impl SelectionGui {
     pub fn kill(&self, upwards: bool) {
-        for (_, surface) in self.surfaces.lock().drain() {
+        for surface in self.surfaces.lock().drain_values() {
             surface.overlay.data.kill(false);
         }
         if let ScreencastPhase::Selecting(s) = self.screencast_session.phase.get() {
@@ -159,7 +159,7 @@ impl ButtonOwner for StaticButton {
                     ScreencastPhase::Selecting(selecting) => selecting,
                     _ => return,
                 };
-                for (_, gui) in selecting.guis.lock().drain() {
+                for gui in selecting.guis.lock().drain_values() {
                     gui.kill(false);
                 }
                 let dpy = &self.surface.output.dpy;

src/portal/ptr_gui.rs

@@ -13,7 +13,7 @@ use {
         theme::Color,
         utils::{
             asyncevent::AsyncEvent, clonecell::CloneCell, copyhashmap::CopyHashMap,
-            errorfmt::ErrorFmt, rc_eq::rc_eq,
+            errorfmt::ErrorFmt, hash_map_ext::HashMapExt, rc_eq::rc_eq,
         },
         video::gbm::{GbmBo, GBM_BO_USE_RENDERING},
         wire::{
@@ -671,7 +671,7 @@ impl WindowData {
             owner.kill(upwards);
         }
         self.render_task.take();
-        for (_, pb) in self.pending_bufs.lock().drain() {
+        for pb in self.pending_bufs.lock().drain_values() {
             pb.params.con.remove_obj(pb.params.deref());
         }
         for buf in self.bufs.borrow_mut().drain(..) {
@@ -689,7 +689,7 @@ impl WindowData {
 
     pub fn allocate_buffers(self: &Rc<Self>) {
         {
-            for (_, buf) in self.pending_bufs.lock().drain() {
+            for buf in self.pending_bufs.lock().drain_values() {
                 buf.params.con.remove_obj(buf.params.deref());
             }
         }

src/rect.rs

@@ -86,6 +86,11 @@ impl Rect {
         Self::new(x1, y1, x1 + width, y1 + height)
     }
 
+    #[track_caller]
+    pub fn new_sized_unchecked(x1: i32, y1: i32, width: i32, height: i32) -> Self {
+        Self::new_sized(x1, y1, width, height).unwrap()
+    }
+
     pub fn union(&self, other: Self) -> Self {
         Self {
             raw: RectRaw {

src/renderer.rs

@@ -103,12 +103,8 @@ impl Renderer<'_> {
         macro_rules! render_layer {
             ($layer:expr) => {
                 for ls in $layer.iter() {
-                    let pos = ls.position();
+                    let pos = ls.output_extents();
-                    self.render_layer_surface(
+                    self.render_layer_surface(ls.deref(), x + pos.x1(), y + pos.y1());
-                        ls.deref(),
-                        x + pos.x1() - opos.x1(),
-                        y + pos.y1() - opos.y1(),
-                    );
                     self.base.ops.push(GfxApiOpt::Sync);
                 }
             };
@@ -124,10 +120,14 @@ impl Renderer<'_> {
         } else {
             render_layer!(output.layers[0]);
             render_layer!(output.layers[1]);
+            let non_exclusive_rect = output.non_exclusive_rect_rel.get();
+            let (x, y) = non_exclusive_rect.translate_inv(x, y);
             {
                 let c = theme.colors.bar_background.get();
                 self.base.fill_boxes2(
-                    slice::from_ref(&Rect::new_sized(0, 0, opos.width(), th).unwrap()),
+                    slice::from_ref(
+                        &Rect::new_sized(0, 0, non_exclusive_rect.width(), th).unwrap(),
+                    ),
                     &c,
                     x,
                     y,
@@ -189,18 +189,24 @@ impl Renderer<'_> {
                 self.render_workspace(&ws, x, y + th + 1);
             }
         }
-        for stacked in self.state.root.stacked.iter() {
+        macro_rules! render_stacked {
-            if stacked.node_visible() {
+            ($stack:expr) => {
-                self.base.ops.push(GfxApiOpt::Sync);
+                for stacked in $stack.iter() {
-                let pos = stacked.node_absolute_position();
+                    if stacked.node_visible() {
-                if pos.intersects(&opos) {
+                        self.base.ops.push(GfxApiOpt::Sync);
-                    let (x, y) = opos.translate(pos.x1(), pos.y1());
+                        let pos = stacked.node_absolute_position();
-                    stacked.node_render(self, x, y, None);
+                        if pos.intersects(&opos) {
+                            let (x, y) = opos.translate(pos.x1(), pos.y1());
+                            stacked.node_render(self, x, y, None);
+                        }
+                    }
                 }
-            }
+            };
         }
+        render_stacked!(self.state.root.stacked);
         render_layer!(output.layers[2]);
         render_layer!(output.layers[3]);
+        render_stacked!(self.state.root.stacked_above_layers);
         if let Some(ws) = output.workspace.get() {
             if ws.render_highlight.get() > 0 {
                 let color = self.state.theme.colors.highlight.get();
@@ -539,8 +545,7 @@ impl Renderer<'_> {
     }
 
     pub fn render_layer_surface(&mut self, surface: &ZwlrLayerSurfaceV1, x: i32, y: i32) {
-        let body = surface.position().at_point(x, y);
+        let (dx, dy) = surface.surface.extents.get().position();
-        let body = self.base.scale_rect(body);
+        self.render_surface(&surface.surface, x - dx, y - dy, None);
-        self.render_surface(&surface.surface, x, y, Some(&body));
     }
 }

src/security_context_acceptor.rs

@@ -3,7 +3,7 @@ use {
         async_engine::SpawnedFuture,
         client::ClientCaps,
         state::State,
-        utils::{copyhashmap::CopyHashMap, errorfmt::ErrorFmt},
+        utils::{copyhashmap::CopyHashMap, errorfmt::ErrorFmt, hash_map_ext::HashMapExt},
     },
     std::{
         cell::Cell,
@@ -36,7 +36,7 @@ struct Acceptor {
 
 impl SecurityContextAcceptors {
     pub fn clear(&self) {
-        for (_, acceptor) in self.acceptors.lock().drain() {
+        for acceptor in self.acceptors.lock().drain_values() {
             acceptor.kill();
         }
     }

src/state.rs

@@ -68,8 +68,8 @@ use {
         utils::{
             activation_token::ActivationToken, asyncevent::AsyncEvent, bindings::Bindings,
             clonecell::CloneCell, copyhashmap::CopyHashMap, errorfmt::ErrorFmt, fdcloser::FdCloser,
-            linkedlist::LinkedList, numcell::NumCell, queue::AsyncQueue, refcounted::RefCounted,
+            hash_map_ext::HashMapExt, linkedlist::LinkedList, numcell::NumCell, queue::AsyncQueue,
-            run_toplevel::RunToplevel,
+            refcounted::RefCounted, run_toplevel::RunToplevel,
         },
         video::{
             dmabuf::DmaBufIds,
@@ -743,11 +743,11 @@ impl State {
         self.xwayland.queue.clear();
         self.idle.inhibitors.clear();
         self.idle.change.clear();
-        for (_, drm_dev) in self.drm_devs.lock().drain() {
+        for drm_dev in self.drm_devs.lock().drain_values() {
             drm_dev.handler.take();
             drm_dev.connectors.clear();
         }
-        for (_, connector) in self.connectors.lock().drain() {
+        for connector in self.connectors.lock().drain_values() {
             connector.handler.take();
             connector.async_event.clear();
         }
@@ -769,7 +769,7 @@ impl State {
         self.toplevel_lists.clear();
         self.security_context_acceptors.clear();
         self.slow_clients.clear();
-        for (_, h) in self.input_device_handlers.borrow_mut().drain() {
+        for h in self.input_device_handlers.borrow_mut().drain_values() {
             h.async_event.clear();
         }
         self.backend_events.clear();

src/tasks/connector.rs

@@ -5,7 +5,7 @@ use {
         ifs::wl_output::{OutputId, PersistentOutputState, WlOutputGlobal},
         state::{ConnectorData, OutputData, State},
         tree::{move_ws_to_output, OutputNode, OutputRenderData, WsMoveConfig},
-        utils::{asyncevent::AsyncEvent, clonecell::CloneCell},
+        utils::{asyncevent::AsyncEvent, clonecell::CloneCell, hash_map_ext::HashMapExt},
     },
     std::{
         cell::{Cell, RefCell},
@@ -147,6 +147,10 @@ impl ConnectorHandler {
             seat_state: Default::default(),
             global: global.clone(),
             layers: Default::default(),
+            exclusive_zones: Default::default(),
+            workspace_rect: Default::default(),
+            non_exclusive_rect: Default::default(),
+            non_exclusive_rect_rel: Default::default(),
             render_data: RefCell::new(OutputRenderData {
                 active_workspace: None,
                 underline: Default::default(),
@@ -169,6 +173,7 @@ impl ConnectorHandler {
             hardware_cursor_needs_render: Cell::new(false),
             screencopies: Default::default(),
         });
+        on.update_rects();
         self.state
             .add_output_scale(on.global.persistent.scale.get());
         let output_data = Rc::new(OutputData {
@@ -244,14 +249,14 @@ impl ConnectorHandler {
             config.connector_disconnected(self.id);
         }
         global.clear();
-        for (_, jo) in on.jay_outputs.lock().drain() {
+        for jo in on.jay_outputs.lock().drain_values() {
             jo.send_destroyed();
         }
         let screencasts: Vec<_> = on.screencasts.lock().values().cloned().collect();
         for sc in screencasts {
             sc.do_destroy();
         }
-        for (_, sc) in on.screencopies.lock().drain() {
+        for sc in on.screencopies.lock().drain_values() {
             sc.send_failed();
         }
         global.destroyed.set(true);
@@ -310,7 +315,7 @@ impl ConnectorHandler {
             }
         };
         let withdraw = || {
-            for (_, con) in output_data.lease_connectors.lock().drain() {
+            for con in output_data.lease_connectors.lock().drain_values() {
                 con.send_withdrawn();
                 if !con.device.destroyed.get() {
                     con.device.send_done();

src/tree/container.rs

@@ -23,6 +23,7 @@ use {
             clonecell::CloneCell,
             double_click_state::DoubleClickState,
             errorfmt::ErrorFmt,
+            hash_map_ext::HashMapExt,
             linkedlist::{LinkedList, LinkedNode, NodeRef},
             numcell::NumCell,
             rc_eq::rc_eq,
@@ -1613,7 +1614,7 @@ impl ToplevelNodeBase for ContainerNode {
     fn tl_destroy_impl(&self) {
         mem::take(self.cursors.borrow_mut().deref_mut());
         let mut cn = self.child_nodes.borrow_mut();
-        for (_, n) in cn.drain() {
+        for n in cn.drain_values() {
             n.node.tl_destroy();
         }
     }

src/tree/display.rs

@@ -20,7 +20,8 @@ pub struct DisplayNode {
     pub id: NodeId,
     pub extents: Cell<Rect>,
     pub outputs: CopyHashMap<ConnectorId, Rc<OutputNode>>,
-    pub stacked: LinkedList<Rc<dyn StackedNode>>,
+    pub stacked: Rc<LinkedList<Rc<dyn StackedNode>>>,
+    pub stacked_above_layers: Rc<LinkedList<Rc<dyn StackedNode>>>,
     pub seat_state: NodeSeatState,
 }
 
@@ -31,6 +32,7 @@ impl DisplayNode {
             extents: Default::default(),
             outputs: Default::default(),
             stacked: Default::default(),
+            stacked_above_layers: Default::default(),
             seat_state: Default::default(),
         }
     }

src/tree/output.rs

@@ -18,8 +18,8 @@ use {
             },
             wl_surface::{
                 ext_session_lock_surface_v1::ExtSessionLockSurfaceV1,
-                zwlr_layer_surface_v1::ZwlrLayerSurfaceV1, SurfaceSendPreferredScaleVisitor,
+                zwlr_layer_surface_v1::{ExclusiveSize, ZwlrLayerSurfaceV1},
-                SurfaceSendPreferredTransformVisitor,
+                SurfaceSendPreferredScaleVisitor, SurfaceSendPreferredTransformVisitor,
             },
             zwlr_layer_shell_v1::{BACKGROUND, BOTTOM, OVERLAY, TOP},
             zwlr_screencopy_frame_v1::ZwlrScreencopyFrameV1,
@@ -32,11 +32,12 @@ use {
         time::Time,
         tree::{
             walker::NodeVisitor, Direction, FindTreeResult, FindTreeUsecase, FoundNode, Node,
-            NodeId, WorkspaceNode,
+            NodeId, StackedNode, WorkspaceNode,
         },
         utils::{
             clonecell::CloneCell, copyhashmap::CopyHashMap, errorfmt::ErrorFmt,
-            linkedlist::LinkedList, scroller::Scroller, transform_ext::TransformExt,
+            hash_map_ext::HashMapExt, linkedlist::LinkedList, scroller::Scroller,
+            transform_ext::TransformExt,
         },
         wire::{JayOutputId, JayScreencastId, ZwlrScreencopyFrameV1Id},
     },
@@ -46,7 +47,7 @@ use {
     std::{
         cell::{Cell, RefCell},
         fmt::{Debug, Formatter},
-        ops::{Deref, Sub},
+        ops::Deref,
         rc::Rc,
     },
 };
@@ -60,6 +61,10 @@ pub struct OutputNode {
     pub workspace: CloneCell<Option<Rc<WorkspaceNode>>>,
     pub seat_state: NodeSeatState,
     pub layers: [LinkedList<Rc<ZwlrLayerSurfaceV1>>; 4],
+    pub exclusive_zones: Cell<ExclusiveSize>,
+    pub workspace_rect: Cell<Rect>,
+    pub non_exclusive_rect: Cell<Rect>,
+    pub non_exclusive_rect_rel: Cell<Rect>,
     pub render_data: RefCell<OutputRenderData>,
     pub state: Rc<State>,
     pub is_dummy: bool,
@@ -93,6 +98,26 @@ pub async fn output_render_data(state: Rc<State>) {
 }
 
 impl OutputNode {
+    pub fn update_exclusive_zones(self: &Rc<Self>) {
+        let mut exclusive = ExclusiveSize::default();
+        for layer in &self.layers {
+            for surface in layer.iter() {
+                exclusive = exclusive.max(&surface.exclusive_size());
+            }
+        }
+        if self.exclusive_zones.replace(exclusive) != exclusive {
+            self.update_rects();
+            for layer in &self.layers {
+                for surface in layer.iter() {
+                    surface.exclusive_zones_changed();
+                }
+            }
+            if let Some(c) = self.workspace.get() {
+                c.change_extents(&self.workspace_rect.get());
+            }
+        }
+    }
+
     pub fn add_screencast(&self, sc: &Rc<JayScreencast>) {
         self.screencasts.set((sc.client.id, sc.id), sc.clone());
         self.screencast_changed();
@@ -140,7 +165,7 @@ impl OutputNode {
             return;
         }
         let now = Time::now().unwrap();
-        for (_, capture) in self.screencopies.lock().drain() {
+        for capture in self.screencopies.lock().drain_values() {
             let wl_buffer = match capture.buffer.take() {
                 Some(b) => b,
                 _ => {
@@ -221,9 +246,9 @@ impl OutputNode {
     }
 
     pub fn on_spaces_changed(self: &Rc<Self>) {
-        self.schedule_update_render_data();
+        self.update_rects();
         if let Some(c) = self.workspace.get() {
-            c.change_extents(&self.workspace_rect());
+            c.change_extents(&self.workspace_rect.get());
         }
     }
 
@@ -280,7 +305,7 @@ impl OutputNode {
             texture_height = (th as f64 * scale).round() as _;
         }
         let active_id = self.workspace.get().map(|w| w.id);
-        let output_width = self.global.pos.get().width();
+        let output_width = self.non_exclusive_rect.get().width();
         rd.underline = Rect::new_sized(0, th, output_width, 1).unwrap();
         for ws in self.workspaces.iter() {
             let old_tex = ws.title_texture.take();
@@ -429,7 +454,7 @@ impl OutputNode {
         if let Some(fs) = ws.fullscreen.get() {
             fs.tl_change_extents(&self.global.pos.get());
         }
-        ws.change_extents(&self.workspace_rect());
+        ws.change_extents(&self.workspace_rect.get());
         for seat in seats {
             ws.clone().node_do_focus(&seat, Direction::Unspecified);
         }
@@ -477,16 +502,29 @@ impl OutputNode {
         ws
     }
 
-    fn workspace_rect(&self) -> Rect {
+    pub fn update_rects(self: &Rc<Self>) {
         let rect = self.global.pos.get();
         let th = self.state.theme.sizes.title_height.get();
-        Rect::new_sized(
+        let exclusive = self.exclusive_zones.get();
-            rect.x1(),
+        let y1 = rect.y1() + exclusive.top;
-            rect.y1() + th + 1,
+        let x2 = rect.x2() - exclusive.right;
-            rect.width(),
+        let y2 = rect.y2() - exclusive.bottom;
-            rect.height().sub(th + 1).max(0),
+        let x1 = rect.x1() + exclusive.left;
-        )
+        let width = (x2 - x1).max(0);
-        .unwrap()
+        let height = (y2 - y1).max(0);
+        self.non_exclusive_rect
+            .set(Rect::new_sized_unchecked(x1, y1, width, height));
+        self.non_exclusive_rect_rel.set(Rect::new_sized_unchecked(
+            exclusive.left,
+            exclusive.top,
+            width,
+            height,
+        ));
+        let y1 = y1 + th + 1;
+        let height = (y2 - y1).max(0);
+        self.workspace_rect
+            .set(Rect::new_sized_unchecked(x1, y1, width, height));
+        self.schedule_update_render_data();
     }
 
     pub fn set_position(self: &Rc<Self>, x: i32, y: i32) {
@@ -545,7 +583,7 @@ impl OutputNode {
         self.global.persistent.pos.set((rect.x1(), rect.y1()));
         self.global.pos.set(*rect);
         self.state.root.update_extents();
-        self.schedule_update_render_data();
+        self.update_rects();
         if let Some(ls) = self.lock_surface.get() {
             ls.change_extents(*rect);
         }
@@ -553,11 +591,11 @@ impl OutputNode {
             if let Some(fs) = c.fullscreen.get() {
                 fs.tl_change_extents(rect);
             }
-            c.change_extents(&self.workspace_rect());
+            c.change_extents(&self.workspace_rect.get());
         }
         for layer in &self.layers {
             for surface in layer.iter() {
-                surface.compute_position();
+                surface.output_resized();
             }
         }
         self.global.send_mode();
@@ -567,6 +605,46 @@ impl OutputNode {
         self.state.tree_changed();
     }
 
+    fn find_stacked_at(
+        &self,
+        stack: &LinkedList<Rc<dyn StackedNode>>,
+        x: i32,
+        y: i32,
+        tree: &mut Vec<FoundNode>,
+        usecase: FindTreeUsecase,
+    ) -> FindTreeResult {
+        if stack.is_empty() {
+            return FindTreeResult::Other;
+        }
+        let (x_abs, y_abs) = self.global.pos.get().translate_inv(x, y);
+        for stacked in stack.rev_iter() {
+            let ext = stacked.node_absolute_position();
+            if !stacked.node_visible() {
+                continue;
+            }
+            if stacked.stacked_absolute_position_constrains_input() && !ext.contains(x_abs, y_abs) {
+                // TODO: make constrain always true
+                continue;
+            }
+            let (x, y) = ext.translate(x_abs, y_abs);
+            let idx = tree.len();
+            tree.push(FoundNode {
+                node: stacked.deref().clone().stacked_into_node(),
+                x,
+                y,
+            });
+            match stacked.node_find_tree_at(x, y, tree, usecase) {
+                FindTreeResult::AcceptsInput => {
+                    return FindTreeResult::AcceptsInput;
+                }
+                FindTreeResult::Other => {
+                    tree.truncate(idx);
+                }
+            }
+        }
+        FindTreeResult::Other
+    }
+
     pub fn find_layer_surface_at(
         &self,
         x: i32,
@@ -581,7 +659,7 @@ impl OutputNode {
         let len = tree.len();
         for layer in layers.iter().copied() {
             for surface in self.layers[layer as usize].rev_iter() {
-                let pos = surface.output_position();
+                let pos = surface.output_extents();
                 if pos.contains(x, y) {
                     let (x, y) = pos.translate(x, y);
                     if surface.node_find_tree_at(x, y, tree, usecase)
@@ -633,7 +711,7 @@ impl OutputNode {
         macro_rules! set_layer_visible {
             ($layer:expr, $visible:expr) => {
                 for ls in $layer.iter() {
-                    ls.surface.set_visible($visible);
+                    ls.set_visible($visible);
                 }
             };
         }
@@ -641,7 +719,7 @@ impl OutputNode {
         if let Some(ws) = self.workspace.get() {
             have_fullscreen = ws.fullscreen.is_some();
         }
-        let lower_visible = visible && have_fullscreen;
+        let lower_visible = visible && !have_fullscreen;
         set_layer_visible!(self.layers[0], lower_visible);
         set_layer_visible!(self.layers[1], lower_visible);
         if let Some(ws) = self.workspace.get() {
@@ -656,6 +734,7 @@ impl OutputNode {
             Some(p) => p,
             _ => return,
         };
+        let (x, y) = self.non_exclusive_rect_rel.get().translate(x, y);
         if y >= self.state.theme.sizes.title_height.get() {
             return;
         }
@@ -794,6 +873,13 @@ impl Node for OutputNode {
                 }
             }
         }
+        {
+            let res =
+                self.find_stacked_at(&self.state.root.stacked_above_layers, x, y, tree, usecase);
+            if res.accepts_input() {
+                return res;
+            }
+        }
         {
             let res = self.find_layer_surface_at(x, y, &[OVERLAY, TOP], tree, usecase);
             if res.accepts_input() {
@@ -801,33 +887,9 @@ impl Node for OutputNode {
             }
         }
         {
-            let (x_abs, y_abs) = self.global.pos.get().translate_inv(x, y);
+            let res = self.find_stacked_at(&self.state.root.stacked, x, y, tree, usecase);
-            for stacked in self.state.root.stacked.rev_iter() {
+            if res.accepts_input() {
-                let ext = stacked.node_absolute_position();
+                return res;
-                if !stacked.node_visible() {
-                    continue;
-                }
-                if stacked.stacked_absolute_position_constrains_input()
-                    && !ext.contains(x_abs, y_abs)
-                {
-                    // TODO: make constrain always true
-                    continue;
-                }
-                let (x, y) = ext.translate(x_abs, y_abs);
-                let idx = tree.len();
-                tree.push(FoundNode {
-                    node: stacked.deref().clone().stacked_into_node(),
-                    x,
-                    y,
-                });
-                match stacked.node_find_tree_at(x, y, tree, usecase) {
-                    FindTreeResult::AcceptsInput => {
-                        return FindTreeResult::AcceptsInput;
-                    }
-                    FindTreeResult::Other => {
-                        tree.truncate(idx);
-                    }
-                }
             }
         }
         let mut fullscreen = None;
@@ -842,21 +904,33 @@ impl Node for OutputNode {
             });
             fs.tl_as_node().node_find_tree_at(x, y, tree, usecase)
         } else {
-            if y >= bar_height {
+            let mut search_layers = true;
-                y -= bar_height;
+            let non_exclusive_rect = self.non_exclusive_rect_rel.get();
-                let len = tree.len();
+            if non_exclusive_rect.contains(x, y) {
-                if let Some(ws) = self.workspace.get() {
+                let (x, y) = non_exclusive_rect.translate(x, y);
-                    tree.push(FoundNode {
+                if y < bar_height {
-                        node: ws.clone(),
+                    search_layers = false;
-                        x,
+                } else {
-                        y,
+                    if let Some(ws) = self.workspace.get() {
-                    });
+                        let y = y - bar_height;
-                    ws.node_find_tree_at(x, y, tree, usecase);
+                        let len = tree.len();
-                }
+                        tree.push(FoundNode {
-                if tree.len() == len {
+                            node: ws.clone(),
-                    self.find_layer_surface_at(x, y, &[BOTTOM, BACKGROUND], tree, usecase);
+                            x,
+                            y,
+                        });
+                        match ws.node_find_tree_at(x, y, tree, usecase) {
+                            FindTreeResult::AcceptsInput => search_layers = false,
+                            FindTreeResult::Other => {
+                                tree.truncate(len);
+                            }
+                        }
+                    }
                 }
             }
+            if search_layers {
+                self.find_layer_surface_at(x, y, &[BOTTOM, BACKGROUND], tree, usecase);
+            }
             FindTreeResult::AcceptsInput
         }
     }

src/tree/toplevel.rs

@@ -15,6 +15,7 @@ use {
         utils::{
             clonecell::CloneCell,
             copyhashmap::CopyHashMap,
+            hash_map_ext::HashMapExt,
             numcell::NumCell,
             smallmap::SmallMap,
             threshold_counter::ThresholdCounter,
@@ -289,16 +290,16 @@ impl ToplevelData {
     }
 
     pub fn destroy_node(&self, node: &dyn Node) {
-        for (_, jay_tl) in self.jay_toplevels.lock().drain() {
+        for jay_tl in self.jay_toplevels.lock().drain_values() {
             jay_tl.destroy();
         }
-        for (_, screencast) in self.jay_screencasts.lock().drain() {
+        for screencast in self.jay_screencasts.lock().drain_values() {
             screencast.do_destroy();
         }
         self.identifier.set(toplevel_identifier());
         {
             let mut handles = self.handles.lock();
-            for (_, handle) in handles.drain() {
+            for handle in handles.drain_values() {
                 handle.send_closed();
             }
         }

src/tree/workspace.rs

@@ -264,9 +264,9 @@ impl Node for WorkspaceNode {
                 x,
                 y,
             });
-            n.node_find_tree_at(x, y, tree, usecase);
+            return n.node_find_tree_at(x, y, tree, usecase);
         }
-        FindTreeResult::AcceptsInput
+        FindTreeResult::Other
     }
 
     fn node_render(&self, renderer: &mut Renderer, x: i32, y: i32, _bounds: Option<&Rect>) {

src/utils.rs

@@ -16,6 +16,7 @@ pub mod double_click_state;
 pub mod errorfmt;
 pub mod fdcloser;
 pub mod gfx_api_ext;
+pub mod hash_map_ext;
 pub mod hex;
 pub mod line_logger;
 pub mod linkedlist;

src/utils/hash_map_ext.rs

@@ -0,0 +1,15 @@
+use std::collections::HashMap;
+
+pub trait HashMapExt {
+    type V;
+
+    fn drain_values(&mut self) -> impl Iterator<Item = Self::V>;
+}
+
+impl<K, V, S> HashMapExt for HashMap<K, V, S> {
+    type V = V;
+
+    fn drain_values(&mut self) -> impl Iterator<Item = Self::V> {
+        self.drain().map(|(_, v)| v)
+    }
+}

src/video/drm/sync_obj.rs

@@ -5,6 +5,7 @@ use {
             clonecell::{CloneCell, UnsafeCellCloneSafe},
             copyhashmap::CopyHashMap,
             errorfmt::ErrorFmt,
+            hash_map_ext::HashMapExt,
             linkedlist::{LinkedList, LinkedNode},
             oserror::OsError,
         },
@@ -230,7 +231,7 @@ impl Drop for SyncObjCtx {
     fn drop(&mut self) {
         self.inner.links.clear();
         let mut map = self.inner.handles.lock();
-        for (_, handle) in map.drain() {
+        for handle in map.drain_values() {
             destroy(&self.inner.drm, handle);
         }
     }

src/video/drm/wait_for_sync_obj.rs

@@ -4,7 +4,7 @@ use {
         io_uring::IoUring,
         utils::{
             asyncevent::AsyncEvent, buf::Buf, clonecell::CloneCell, copyhashmap::CopyHashMap,
-            numcell::NumCell, oserror::OsError, stack::Stack,
+            hash_map_ext::HashMapExt, numcell::NumCell, oserror::OsError, stack::Stack,
         },
         video::drm::{
             sync_obj::{SyncObj, SyncObjCtx, SyncObjPoint},
@@ -89,7 +89,7 @@ impl WaitForSyncObj {
 
     pub fn set_ctx(&self, ctx: Option<Rc<SyncObjCtx>>) {
         self.inner.ctx.set(ctx);
-        let busy_waiters: Vec<_> = self.inner.busy.lock().drain().map(|(_, w)| w).collect();
+        let busy_waiters: Vec<_> = self.inner.busy.lock().drain_values().collect();
         for waiter in busy_waiters {
             let res = self.submit_job(
                 waiter.job.id,

src/wheel.rs

@@ -4,8 +4,8 @@ use {
         io_uring::{IoUring, IoUringError},
         time::{Time, TimeError},
         utils::{
-            buf::TypedBuf, copyhashmap::CopyHashMap, errorfmt::ErrorFmt, numcell::NumCell,
+            buf::TypedBuf, copyhashmap::CopyHashMap, errorfmt::ErrorFmt, hash_map_ext::HashMapExt,
-            oserror::OsError, stack::Stack,
+            numcell::NumCell, oserror::OsError, stack::Stack,
         },
     },
     std::{
@@ -204,7 +204,7 @@ impl WheelData {
         self.destroyed.set(true);
         self.dispatcher.set(None);
         self.cached_futures.take();
-        for (_, dispatcher) in self.dispatchers.lock().drain() {
+        for dispatcher in self.dispatchers.lock().drain_values() {
             dispatcher.complete(Err(WheelError::Destroyed));
         }
     }

src/wl_usr.rs

@@ -17,6 +17,7 @@ use {
             clonecell::CloneCell,
             copyhashmap::CopyHashMap,
             errorfmt::ErrorFmt,
+            hash_map_ext::HashMapExt,
             oserror::OsError,
             vec_ext::VecExt,
         },
@@ -159,7 +160,7 @@ impl UsrCon {
 
     pub fn kill(&self) {
         self.dead.set(true);
-        for (_, obj) in self.objects.lock().drain() {
+        for obj in self.objects.lock().drain_values() {
             if let Some(obj) = obj {
                 obj.break_loops();
             }

src/xwayland/xwm.rs

@@ -27,8 +27,8 @@ use {
         tree::{Node, ToplevelNode},
         utils::{
             bitflags::BitflagsExt, buf::Buf, cell_ext::CellExt, clonecell::CloneCell,
-            copyhashmap::CopyHashMap, errorfmt::ErrorFmt, linkedlist::LinkedList, numcell::NumCell,
+            copyhashmap::CopyHashMap, errorfmt::ErrorFmt, hash_map_ext::HashMapExt,
-            oserror::OsError, rc_eq::rc_eq,
+            linkedlist::LinkedList, numcell::NumCell, oserror::OsError, rc_eq::rc_eq,
         },
         wire::WlSurfaceId,
         wire_xcon::{
@@ -171,7 +171,7 @@ struct SelectionData<T: XIpc> {
 
 impl<T: XIpc> SelectionData<T> {
     fn destroy(&self) {
-        for (_, offer) in self.offers.lock().drain() {
+        for offer in self.offers.lock().drain_values() {
             destroy_data_offer::<T>(&offer.offer);
         }
         self.active_offer.take();
@@ -179,7 +179,7 @@ impl<T: XIpc> SelectionData<T> {
     }
 
     fn destroy_sources(&self) {
-        for (_, source) in self.sources.lock().drain() {
+        for source in self.sources.lock().drain_values() {
             destroy_data_source::<T>(&source);
         }
     }
@@ -207,7 +207,7 @@ impl Drop for XwmShared {
     fn drop(&mut self) {
         self.data.destroy();
         self.primary_selection.destroy();
-        for (_, device) in self.devices.lock().drain() {
+        for device in self.devices.lock().drain_values() {
             destroy_data_device::<XClipboardIpc>(&device);
             destroy_data_device::<XPrimarySelectionIpc>(&device);
             device.seat.unset_x_data_device(device.id);
@@ -260,7 +260,7 @@ enum Initiator {
 
 impl Drop for Wm {
     fn drop(&mut self) {
-        for (_, window) in self.windows.drain() {
+        for window in self.windows.drain_values() {
             if let Some(window) = window.window.take() {
                 window.break_loops();
             }
@@ -1985,7 +1985,7 @@ impl Wm {
         }
         {
             let mut children = data.children.lock();
-            for (_, child) in children.drain() {
+            for child in children.drain_values() {
                 child.parent.set(None);
             }
         }

wire/zwlr_layer_surface_v1.txt

@@ -38,6 +38,10 @@ request set_layer (since = 2) {
     layer: u32,
 }
 
+request set_exclusive_edge (since = 5) {
+    edge: u32,
+}
+
 # events
 
 event configure {