fullscreen fix?

src/backends/traits.rs

@@ -21,6 +21,11 @@ pub trait WindowServerBackend {
     fn focus_window(&self, window: Self::Window);
     fn unfocus_window(&self, window: Self::Window);
     fn raise_window(&self, window: Self::Window);
+    fn set_window_fullscreen_state(
+        &self,
+        window: Self::Window,
+        fullscreen: bool,
+    );
     fn hide_window(&self, window: Self::Window);
     fn kill_window(&self, window: Self::Window);
     fn get_parent_window(&self, window: Self::Window) -> Option<Self::Window>;

src/backends/xlib/mod.rs

@@ -818,9 +818,10 @@ impl XLib {
     }
 
     unsafe fn init_as_wm(&self) {
-        let mut window_attributes =
+        let mut window_attributes = unsafe {
             std::mem::MaybeUninit::<xlib::XSetWindowAttributes>::zeroed()
-                .assume_init();
+                .assume_init()
+        };
 
         window_attributes.event_mask = xlib::SubstructureRedirectMask
             | xlib::StructureNotifyMask
@@ -829,6 +830,7 @@ impl XLib {
             | xlib::PointerMotionMask
             | xlib::ButtonPressMask;
 
+        unsafe {
             xlib::XChangeWindowAttributes(
                 self.connection.dpy(),
                 self.connection.root(),
@@ -844,6 +846,7 @@ impl XLib {
 
             xlib::XSetErrorHandler(Some(xlib_error_handler));
             xlib::XSync(self.dpy(), 0);
+        }
 
         self.ewmh_atoms.set_supported_atoms(self.connection.clone());
         self.connection.delete_property(
@@ -1723,6 +1726,30 @@ impl WindowServerBackend for XLib {
             },
         }
     }
+
+    fn set_window_fullscreen_state(
+        &self,
+        window: Self::Window,
+        fullscreen: bool,
+    ) {
+        if fullscreen {
+            self.connection.change_property_long(
+                window,
+                self.ewmh_atoms[EWMHAtom::NetWmState],
+                XA_WINDOW,
+                PropMode::Replace,
+                &[self.ewmh_atoms[EWMHAtom::NetWmStateFullscreen] as _],
+            );
+        } else {
+            self.connection.change_property_long(
+                window,
+                self.ewmh_atoms[EWMHAtom::NetWmState],
+                XA_WINDOW,
+                PropMode::Replace,
+                &[0 as _],
+            );
+        }
+    }
 }
 
 impl TryFrom<EWMHAtom> for WindowType {
@@ -1748,7 +1775,7 @@ unsafe extern "C" fn xlib_error_handler(
     _dpy: *mut x11::xlib::Display,
     ee: *mut x11::xlib::XErrorEvent,
 ) -> std::os::raw::c_int {
-    let err_event = ee.as_ref().unwrap();
+    let err_event = unsafe { ee.as_ref().unwrap() };
     let err = XlibError::from(err_event.error_code);
 
     match err {

src/lib.rs

@@ -1,3 +1,5 @@
+#![deny(unsafe_op_in_unsafe_fn)]
+
 pub mod backends;
 pub mod clients;
 pub mod state;

src/state.rs

@@ -203,16 +203,6 @@ where
             },
         ));
 
-        // self.add_keybind(KeyBinding::new(
-        //     KeyBind::new(VirtualKeyCode::Print),
-        //     |wm, _| wm.spawn("screenshot.sh", &[]),
-        // ));
-
-        // self.add_keybind(KeyBinding::new(
-        //     KeyBind::new(VirtualKeyCode::Print).with_mod(ModifierKey::Shift),
-        //     |wm, _| wm.spawn("screenshot.sh", &["-edit"]),
-        // ));
-
         self.add_keybind(KeyBinding::new(
             KeyBind::new(VirtualKeyCode::M).with_mod(self.config.mod_key),
             |wm, _| wm.handle_switch_stack(),
@@ -488,6 +478,11 @@ where
                                     Some(self.clients.get_border())
                                 },
                             );
+
+                            self.backend.set_window_fullscreen_state(
+                                client.window,
+                                client.is_fullscreen(),
+                            );
                         };
 
                         self.arrange_clients();