Add app id setting for linux

Author: tarkah

winit/src/settings.rs

@@ -7,13 +7,18 @@ mod platform;
 #[path = "settings/macos.rs"]
 mod platform;
 
+#[cfg(target_os = "linux")]
+#[path = "settings/linux.rs"]
+mod platform;
+
 #[cfg(target_arch = "wasm32")]
 #[path = "settings/wasm.rs"]
 mod platform;
 
 #[cfg(not(any(
     target_os = "windows",
     target_os = "macos",
+    target_os = "linux",
     target_arch = "wasm32"
 )))]
 #[path = "settings/other.rs"]
@@ -150,7 +155,6 @@ impl Window {
         }
 
         #[cfg(any(
-            target_os = "linux",
             target_os = "dragonfly",
             target_os = "freebsd",
             target_os = "netbsd",
@@ -192,6 +196,28 @@ impl Window {
                 );
         }
 
+        #[cfg(target_os = "linux")]
+        {
+            #[cfg(feature = "x11")]
+            {
+                use winit::platform::x11::WindowBuilderExtX11;
+
+                window_builder = window_builder.with_name(
+                    &self.platform_specific.application_id,
+                    &self.platform_specific.application_id,
+                );
+            }
+            #[cfg(feature = "wayland")]
+            {
+                use winit::platform::wayland::WindowBuilderExtWayland;
+
+                window_builder = window_builder.with_name(
+                    &self.platform_specific.application_id,
+                    &self.platform_specific.application_id,
+                );
+            }
+        }
+
         window_builder
     }
 }

winit/src/settings/linux.rs

@@ -0,0 +1,11 @@
+//! Platform specific settings for Linux.
+
+/// The platform specific window settings of an application.
+#[derive(Debug, Clone, PartialEq, Eq, Default)]
+pub struct PlatformSpecific {
+    /// Sets the application id of the window.
+    ///
+    /// As a best practice, it is suggested to select an application id that match
+    /// the basename of the application’s .desktop file.
+    pub application_id: String,
+}