Window::set_minimized (#985) (#990)

* Expose set_minimized. Implement for macOS (#985)

* Implement set_minimized for Wayland (#985)

Co-Authored-By: Victor Berger <vberger@users.noreply.github.com>

* Implement set_minimized for Windows (#985)

* Remove debug logs (#985)

* Implement Window::set_minimized for X11

* Remove extra param from set_window_flags call

* Cargo fmt

* Add example of usage

* Update changelog

* Update feature matrix

* Cargo fmt

* Update example to remove unnecessary event var

* Stop setting window styles when minimizing (#985)

* Add stub for WASM (#985)

Co-authored-by: Victor Berger <vberger@users.noreply.github.com>
Co-authored-by: Murarth <murarth@gmail.com>
Co-authored-by: Freya Gentz <zegentzy@protonmail.com>
Co-authored-by: Osspial <osspial@gmail.com>

src/platform_impl/linux/mod.rs

@@ -367,6 +367,14 @@ impl Window {
         }
     }
 
+    #[inline]
+    pub fn set_minimized(&self, minimized: bool) {
+        match self {
+            &Window::X(ref w) => w.set_minimized(minimized),
+            &Window::Wayland(ref w) => w.set_minimized(minimized),
+        }
+    }
+
     #[inline]
     pub fn fullscreen(&self) -> Option<Fullscreen> {
         match self {

src/platform_impl/linux/wayland/window.rs

@@ -259,6 +259,13 @@ impl Window {
         *(self.need_frame_refresh.lock().unwrap()) = true;
     }
 
+    pub fn set_minimized(&self, minimized: bool) {
+        // An app cannot un-minimize itself on Wayland
+        if minimized {
+            self.frame.lock().unwrap().set_minimized();
+        }
+    }
+
     pub fn set_maximized(&self, maximized: bool) {
         if maximized {
             self.frame.lock().unwrap().set_maximized();

src/platform_impl/linux/x11/window.rs

@@ -749,6 +749,35 @@ impl UnownedWindow {
         self.xconn.primary_monitor()
     }
 
+    fn set_minimized_inner(&self, minimized: bool) -> util::Flusher<'_> {
+        unsafe {
+            if minimized {
+                let screen = (self.xconn.xlib.XDefaultScreen)(self.xconn.display);
+
+                (self.xconn.xlib.XIconifyWindow)(self.xconn.display, self.xwindow, screen);
+
+                util::Flusher::new(&self.xconn)
+            } else {
+                let atom = self.xconn.get_atom_unchecked(b"_NET_ACTIVE_WINDOW\0");
+
+                self.xconn.send_client_msg(
+                    self.xwindow,
+                    self.root,
+                    atom,
+                    Some(ffi::SubstructureRedirectMask | ffi::SubstructureNotifyMask),
+                    [1, ffi::CurrentTime as c_long, 0, 0, 0],
+                )
+            }
+        }
+    }
+
+    #[inline]
+    pub fn set_minimized(&self, minimized: bool) {
+        self.set_minimized_inner(minimized)
+            .flush()
+            .expect("Failed to change window minimization");
+    }
+
     fn set_maximized_inner(&self, maximized: bool) -> util::Flusher<'_> {
         let horz_atom = unsafe {
             self.xconn