event_loop: add is_x11 and is_wayland on EventLoop

src/changelog/unreleased.md

@@ -12,6 +12,7 @@ on how to add them:
 ### Added
 
 - Add `Window::turbo()`, implemented on X11, Wayland, and Web.
+- Add traits `EventLoopExtWayland` and `EventLoopExtX11`, providing methods `is_wayland` and `is_x11` on `EventLoop`.
 - On X11, add `Window::some_rare_api`.
 - On X11, add `Window::even_more_rare_api`.
 - On Wayland, add `Window::common_api`.

src/platform/wayland.rs

@@ -13,7 +13,7 @@
 //! * `wayland-csd-adwaita` (default).
 //! * `wayland-csd-adwaita-crossfont`.
 //! * `wayland-csd-adwaita-notitle`.
-use crate::event_loop::{ActiveEventLoop, EventLoopBuilder};
+use crate::event_loop::{ActiveEventLoop, EventLoop, EventLoopBuilder};
 use crate::monitor::MonitorHandle;
 use crate::window::{Window, WindowAttributes};
 
@@ -32,6 +32,19 @@ impl ActiveEventLoopExtWayland for ActiveEventLoop {
  }
 }
 
+/// Additional methods on [`EventLoop`] that are specific to Wayland.
+pub trait EventLoopExtWayland {
+ /// True if the [`EventLoop`] uses Wayland.
+ fn is_wayland(&self) -> bool;
+}
+
+impl<T: 'static> EventLoopExtWayland for EventLoop<T> {
+ #[inline]
+ fn is_wayland(&self) -> bool {
+ self.event_loop.is_wayland()
+ }
+}
+
 /// Additional methods on [`EventLoopBuilder`] that are specific to Wayland.
 pub trait EventLoopBuilderExtWayland {
  /// Force using Wayland.

src/platform/x11.rs

@@ -2,7 +2,7 @@
 #[cfg(feature = "serde")]
 use serde::{Deserialize, Serialize};
 
-use crate::event_loop::{ActiveEventLoop, EventLoopBuilder};
+use crate::event_loop::{ActiveEventLoop, EventLoop, EventLoopBuilder};
 use crate::monitor::MonitorHandle;
 use crate::window::{Window, WindowAttributes};
 
@@ -99,6 +99,19 @@ impl ActiveEventLoopExtX11 for ActiveEventLoop {
  }
 }
 
+/// Additional methods on [`EventLoop`] that are specific to X11.
+pub trait EventLoopExtX11 {
+ /// True if the [`EventLoop`] uses X11.
+ fn is_x11(&self) -> bool;
+}
+
+impl<T: 'static> EventLoopExtX11 for EventLoop<T> {
+ #[inline]
+ fn is_x11(&self) -> bool {
+ !self.event_loop.is_wayland()
+ }
+}
+
 /// Additional methods on [`EventLoopBuilder`] that are specific to X11.
 pub trait EventLoopBuilderExtX11 {
  /// Force using X11.

src/platform_impl/linux/mod.rs

@@ -784,6 +784,16 @@ impl<T: 'static> EventLoop<T> {
  Ok(EventLoop::X(x11::EventLoop::new(xconn)))
  }
 
+ #[inline]
+ pub fn is_wayland(&self) -> bool {
+ match *self {
+ #[cfg(wayland_platform)]
+ EventLoop::Wayland(_) => true,
+ #[cfg(x11_platform)]
+ _ => false,
+ }
+ }
+
  pub fn create_proxy(&self) -> EventLoopProxy<T> {
  x11_or_wayland!(match self; EventLoop(evlp) => evlp.create_proxy(); as EventLoopProxy)
  }