feat: WindowExtUnix trait (#192)

* Add WindowExtUnix

* Add change file

.changes/unix.md

@@ -0,0 +1,6 @@
+---
+"wry": minor
+---
+
+Add platform module and WindowExtUnix trait on Linux
+

src/application/event_loop.rs

@@ -324,6 +324,7 @@ impl<T: 'static> EventLoop<T> {
               window.set_urgency_hint(true)
             }
           }
+          WindowRequest::SkipTaskbar => window.set_skip_taskbar_hint(true),
         }
       }
 

src/application/mod.rs

@@ -15,6 +15,8 @@ mod icon;
 #[cfg(target_os = "linux")]
 pub mod monitor;
 #[cfg(target_os = "linux")]
+pub mod platform;
+#[cfg(target_os = "linux")]
 pub mod window;
 
 #[cfg(not(target_os = "linux"))]

src/application/platform.rs

@@ -0,0 +1,22 @@
+// Copyright 2019-2021 Tauri Programme within The Commons Conservancy
+// SPDX-License-Identifier: Apache-2.0
+// SPDX-License-Identifier: MIT
+
+pub mod unix {
+  use crate::application::window::{Window, WindowRequest};
+
+  pub trait WindowExtUnix {
+    fn skip_taskbar(&self);
+  }
+
+  impl WindowExtUnix for Window {
+    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);
+      }
+    }
+  }
+}

src/application/window.rs

@@ -307,7 +307,7 @@ pub struct Window {
   /// Gtk application window.
   pub(crate) window: gtk::ApplicationWindow,
   /// Window requests sender
-  window_requests_tx: Sender<(WindowId, WindowRequest)>,
+  pub(crate) window_requests_tx: Sender<(WindowId, WindowRequest)>,
   scale_factor: f64,
   position: (AtomicI32, AtomicI32),
   size: (AtomicI32, AtomicI32),
@@ -725,6 +725,7 @@ pub(crate) enum WindowRequest {
   AlwaysOnTop(bool),
   WindowIcon(Option<Icon>),
   UserAttention(Option<UserAttentionType>),
+  SkipTaskbar,
 }
 
 pub(crate) fn hit_test(window: &gdk::Window, cx: f64, cy: f64) -> WindowEdge {