Add WindowExtUnix trait

Cargo.toml

@@ -20,7 +20,7 @@ default-target = "x86_64-unknown-linux-gnu"
 targets = ["i686-pc-windows-msvc", "x86_64-pc-windows-msvc", "i686-unknown-linux-gnu", "x86_64-unknown-linux-gnu", "x86_64-apple-darwin", "wasm32-unknown-unknown"]
 
 [features]
-default = ["x11", "wayland"]
+default = ["x11"]
 web-sys = ["web_sys", "wasm-bindgen", "instant/wasm-bindgen"]
 stdweb = ["std_web", "instant/stdweb"]
 x11 = ["x11-dl", "mio", "mio-misc", "percent-encoding", "parking_lot"]
@@ -95,6 +95,14 @@ mio-misc = { version = "1.0", optional = true }
 x11-dl = { version = "2.18.5", optional = true }
 percent-encoding = { version = "2.0", optional = true }
 parking_lot = { version = "0.11.0", optional = true }
+# gtk
+cairo-rs = "0.9"
+gio = "0.9"
+glib = "0.10"
+gtk = "0.9"
+gdk = "0.13"
+gdk-pixbuf = "0.9"
+image = "0.23"
 
 [target.'cfg(target_arch = "wasm32")'.dependencies.web_sys]
 package = "web-sys"

src/platform/unix.rs

@@ -5,3 +5,26 @@
     target_os = "netbsd",
     target_os = "openbsd"
 ))]
+
+use crate::window::Window;
+
+/// Additional methods on `Window` that are specific to Unix.
+pub trait WindowExtUnix {
+    /// Returns the `ApplicatonWindow` from gtk crate that is used by this window.
+    ///
+    /// Returns `None` if the window doesn't use xlib (if it uses wayland for example).
+    fn gtk_window(&self) -> &gtk::ApplicationWindow;
+
+    /// Not to display window icon in the task bar.
+    fn skip_taskbar(&self);
+}
+
+impl WindowExtUnix for Window {
+    fn gtk_window(&self) -> &gtk::ApplicationWindow {
+        &self.window.window
+    }
+
+    fn skip_taskbar(&self) {
+        self.window.skip_taskbar()
+    }
+}

src/platform_impl/linux/window.rs

@@ -559,6 +559,15 @@ impl Window {
     pub fn raw_window_handle(&self) -> raw_window_handle::RawWindowHandle {
         todo!()
     }
+
+    pub fn skip_taskbar(&self) {
+        if let Err(e) = self
+            .window_requests_tx
+            .send((self.window_id, WindowRequest::SkipTaskbar))
+        {
+            log::warn!("Fail to send skip taskbar request: {}", e);
+        }
+    }
 }
 
 // We need GtkWindow to initialize WebView, so we have to keep it in the field.