Autohide notification when mouse not over

src/notification_popover.rs

@@ -4,6 +4,7 @@ use gtk4::{
     prelude::*,
     subclass::prelude::*,
 };
+use std::cell::RefCell;
 
 use crate::deref_cell::DerefCell;
 use crate::notification_widget::NotificationWidget;
@@ -13,6 +14,7 @@ use crate::notifications::{Notification, NotificationId, Notifications};
 pub struct NotificationPopoverInner {
     notification_widget: DerefCell<NotificationWidget>,
     notifications: DerefCell<Notifications>,
+    source: RefCell<Option<glib::SourceId>>,
 }
 
 #[glib::object_subclass]
@@ -24,24 +26,33 @@ impl ObjectSubclass for NotificationPopoverInner {
 
 impl ObjectImpl for NotificationPopoverInner {
     fn constructed(&self, obj: &NotificationPopover) {
-        obj.add_controller(&cascade! {
-            gtk4::GestureClick::new();
-            ..connect_released(clone!(@weak obj => move |_, n_press, _, _| {
-                if n_press != 1 {
-                    return;
-                }
-                if let Some(id) = obj.id() {
-                    obj.inner().notifications.invoke_action(id, "default");
-                }
-                obj.popdown();
-            }));
-        });
-
         cascade! {
             obj;
             ..set_autohide(false);
             ..set_has_arrow(false);
             ..set_offset(0, 12);
+            ..add_controller(&cascade! {
+                gtk4::GestureClick::new();
+                ..connect_released(clone!(@weak obj => move |_, n_press, _, _| {
+                    if n_press != 1 {
+                        return;
+                    }
+                    if let Some(id) = obj.id() {
+                        obj.inner().notifications.invoke_action(id, "default");
+                    }
+                    obj.popdown();
+                    obj.stop_timer();
+                }));
+            });
+            ..add_controller(&cascade! {
+                gtk4::EventControllerMotion::new();
+                ..connect_enter(clone!(@weak obj => move |_, _, _| {
+                    obj.stop_timer();
+                }));
+                ..connect_leave(clone!(@weak obj => move |_| {
+                    obj.start_timer();
+                }));
+            });
         };
     }
 }
@@ -72,6 +83,7 @@ impl NotificationPopover {
         notifications.connect_notification_closed(clone!(@weak obj => move |id| {
             if obj.id() == Some(id) {
                 obj.popdown();
+                obj.stop_timer();
             }
         }));
 
@@ -91,5 +103,24 @@ impl NotificationPopover {
             .notification_widget
             .set_notification(notification);
         self.popup();
+        self.start_timer();
+    }
+
+    fn stop_timer(&self) {
+        if let Some(source) = self.inner().source.borrow_mut().take() {
+            glib::source_remove(source);
+        }
+    }
+
+    fn start_timer(&self) {
+        self.stop_timer();
+        let source = glib::timeout_add_seconds_local(
+            1,
+            clone!(@weak self as self_ => @default-return Continue(false), move || {
+                self_.popdown();
+                Continue(false)
+            }),
+        );
+        *self.inner().source.borrow_mut() = Some(source);
     }
 }