Add Window::is_minimized

Co-authored-by: Kirill Chibisov <contact@kchibisov.com>
Co-authored-by: Markus Siglreithmaier <m.siglreith@gmail.com>

src/platform_impl/linux/mod.rs

@@ -464,6 +464,11 @@ impl Window {
         x11_or_wayland!(match self; Window(w) => w.set_minimized(minimized))
     }
 
+    #[inline]
+    pub fn is_minimized(&self) -> Option<bool> {
+        x11_or_wayland!(match self; Window(w) => w.is_minimized())
+    }
+
     #[inline]
     pub(crate) fn fullscreen(&self) -> Option<Fullscreen> {
         x11_or_wayland!(match self; Window(w) => w.fullscreen())

src/platform_impl/linux/wayland/window/mod.rs

@@ -483,6 +483,11 @@ impl Window {
         self.decorated.load(Ordering::Relaxed)
     }
 
+    #[inline]
+    pub fn is_minimized(&self) -> Option<bool> {
+        None
+    }
+
     #[inline]
     pub fn set_minimized(&self, minimized: bool) {
         // You can't unminimize the window on Wayland.

src/platform_impl/linux/x11/window.rs

@@ -802,6 +802,20 @@ impl UnownedWindow {
         self.xconn.primary_monitor()
     }
 
+    #[inline]
+    pub fn is_minimized(&self) -> Option<bool> {
+        let state_atom = unsafe { self.xconn.get_atom_unchecked(b"_NET_WM_STATE\0") };
+        let state = self
+            .xconn
+            .get_property(self.xwindow, state_atom, ffi::XA_ATOM);
+        let hidden_atom = unsafe { self.xconn.get_atom_unchecked(b"_NET_WM_STATE_HIDDEN\0") };
+
+        Some(match state {
+            Ok(atoms) => atoms.iter().any(|atom: &ffi::Atom| *atom == hidden_atom),
+            _ => false,
+        })
+    }
+
     fn set_minimized_inner(&self, minimized: bool) -> util::Flusher<'_> {
         unsafe {
             if minimized {