Add theme and theme_changes functions to system

Cargo.toml

@@ -54,7 +54,7 @@ tokio = ["iced_futures/tokio"]
 # Enables `smol` as the `executor::Default` on native platforms
 smol = ["iced_futures/smol"]
 # Enables querying system information
-system = ["iced_winit/system"]
+sysinfo = ["iced_winit/sysinfo"]
 # Enables broken "sRGB linear" blending to reproduce color management of the Web
 web-colors = ["iced_renderer/web-colors"]
 # Enables pixel snapping for crisp edges by default (can cause jitter!)

core/src/window/event.rs

@@ -1,4 +1,3 @@
-use crate::theme;
 use crate::time::Instant;
 use crate::{Point, Size};
 
@@ -72,7 +71,4 @@ pub enum Event {
     ///
     /// - **Wayland:** Not implemented.
     FilesHoveredLeft,
-
-    /// The theme mode of the window has changed.
-    ThemeModeChanged(theme::Mode),
 }

examples/events/src/main.rs

@@ -37,7 +37,7 @@ impl Events {
             }
             Message::EventOccurred(event) => {
                 if let Event::Window(window::Event::CloseRequested) = event {
-                    window::get_latest().and_then(window::close)
+                    window::latest().and_then(window::close)
                 } else {
                     Task::none()
                 }
@@ -47,7 +47,7 @@ impl Events {
 
                 Task::none()
             }
-            Message::Exit => window::get_latest().and_then(window::close),
+            Message::Exit => window::latest().and_then(window::close),
         }
     }
 

examples/exit/src/main.rs

@@ -20,7 +20,7 @@ enum Message {
 impl Exit {
     fn update(&mut self, message: Message) -> Task<Message> {
         match message {
-            Message::Confirm => window::get_latest().and_then(window::close),
+            Message::Confirm => window::latest().and_then(window::close),
             Message::Exit => {
                 self.show_confirm = true;
 

examples/multi_window/src/main.rs

@@ -66,7 +66,7 @@ impl Example {
                     return Task::none();
                 };
 
-                window::get_position(*last_window)
+                window::position(*last_window)
                     .then(|last_position| {
                         let position = last_position.map_or(
                             window::Position::Default,

examples/screenshot/src/main.rs

@@ -49,7 +49,7 @@ impl Example {
     fn update(&mut self, message: Message) -> Task<Message> {
         match message {
             Message::Screenshot => {
-                return window::get_latest()
+                return window::latest()
                     .and_then(window::screenshot)
                     .map(Message::Screenshotted);
             }

examples/system_information/Cargo.toml

@@ -7,6 +7,6 @@ publish = false
 
 [dependencies]
 iced.workspace = true
-iced.features = ["system"]
+iced.features = ["sysinfo"]
 
 bytesize = "1.1"

examples/system_information/src/main.rs

@@ -1,5 +1,6 @@
+use iced::system;
 use iced::widget::{button, center, column, text};
-use iced::{Element, Task, system};
+use iced::{Element, Task};
 
 pub fn main() -> iced::Result {
     iced::application(Example::new, Example::update, Example::view).run()
@@ -26,7 +27,7 @@ impl Example {
     fn new() -> (Self, Task<Message>) {
         (
             Self::Loading,
-            system::fetch_information().map(Message::InformationReceived),
+            system::information().map(Message::InformationReceived),
         )
     }
 

examples/todos/src/main.rs

@@ -151,7 +151,7 @@ impl Todos {
                             widget::focus_next()
                         }
                     }
-                    Message::ToggleFullscreen(mode) => window::get_latest()
+                    Message::ToggleFullscreen(mode) => window::latest()
                         .and_then(move |window| window::set_mode(window, mode)),
                     Message::Loaded(_) => Command::none(),
                 };

futures/src/event.rs

@@ -37,6 +37,7 @@ where
             event: Event::Window(window::Event::RedrawRequested(_)),
             ..
         }
+        | subscription::Event::SystemThemeChanged(_)
         | subscription::Event::PlatformSpecific(_) => None,
         subscription::Event::Interaction {
             window,
@@ -66,7 +67,8 @@ where
             event,
             status,
         } => f(event, status, window),
-        subscription::Event::PlatformSpecific(_) => None,
+        subscription::Event::SystemThemeChanged(_)
+        | subscription::Event::PlatformSpecific(_) => None,
     })
 }
 

futures/src/subscription.rs

@@ -4,6 +4,7 @@ mod tracker;
 pub use tracker::Tracker;
 
 use crate::core::event;
+use crate::core::theme;
 use crate::core::window;
 use crate::futures::Stream;
 use crate::{BoxStream, MaybeSend};
@@ -27,6 +28,9 @@ pub enum Event {
         status: event::Status,
     },
 
+    /// The system theme has changed.
+    SystemThemeChanged(theme::Mode),
+
     /// A platform specific event.
     PlatformSpecific(PlatformSpecific),
 }
@@ -422,7 +426,8 @@ where
     }
 }
 
-pub(crate) fn filter_map<I, F, T>(id: I, f: F) -> Subscription<T>
+/// Creatges a [`Subscription`] from a hashable id and a filter function.
+pub fn filter_map<I, F, T>(id: I, f: F) -> Subscription<T>
 where
     I: Hash + 'static,
     F: Fn(Event) -> Option<T> + MaybeSend + 'static,

graphics/src/compositor.rs

@@ -59,7 +59,7 @@ pub trait Compositor: Sized {
     );
 
     /// Returns [`Information`] used by this [`Compositor`].
-    fn fetch_information(&self) -> Information;
+    fn information(&self) -> Information;
 
     /// Loads a font from its bytes.
     fn load_font(&mut self, font: Cow<'static, [u8]>) {
@@ -178,7 +178,7 @@ impl Compositor for () {
 
     fn load_font(&mut self, _font: Cow<'static, [u8]>) {}
 
-    fn fetch_information(&self) -> Information {
+    fn information(&self) -> Information {
         Information {
             adapter: String::from("Null Renderer"),
             backend: String::from("Null"),

renderer/src/fallback.rs

@@ -313,8 +313,8 @@ where
         delegate!(self, compositor, compositor.load_font(font));
     }
 
-    fn fetch_information(&self) -> compositor::Information {
+    fn information(&self) -> compositor::Information {
-        delegate!(self, compositor, compositor.fetch_information())
+        delegate!(self, compositor, compositor.information())
     }
 
     fn present(

runtime/src/lib.rs

@@ -25,7 +25,6 @@ pub use iced_futures as futures;
 pub use task::Task;
 pub use user_interface::UserInterface;
 
-use crate::core::theme;
 use crate::core::widget;
 use crate::futures::futures::channel::oneshot;
 
@@ -57,9 +56,6 @@ pub enum Action<T> {
     /// Run a system action.
     System(system::Action),
 
-    /// Change the default system theme mode of all windows.
-    ChangeTheme(theme::Mode),
-
     /// Recreate all user interfaces and redraw all windows.
     Reload,
 
@@ -86,7 +82,6 @@ impl<T> Action<T> {
             Action::Clipboard(action) => Err(Action::Clipboard(action)),
             Action::Window(action) => Err(Action::Window(action)),
             Action::System(action) => Err(Action::System(action)),
-            Action::ChangeTheme(mode) => Err(Action::ChangeTheme(mode)),
             Action::Reload => Err(Action::Reload),
             Action::Exit => Err(Action::Exit),
         }
@@ -111,9 +106,6 @@ where
             }
             Action::Window(_) => write!(f, "Action::Window"),
             Action::System(action) => write!(f, "Action::System({action:?})"),
-            Action::ChangeTheme(mode) => {
-                write!(f, "Action::ChangeTheme({mode:?})")
-            }
             Action::Reload => write!(f, "Action::Reload"),
             Action::Exit => write!(f, "Action::Exit"),
         }

runtime/src/system.rs

@@ -1,11 +1,20 @@
 //! Access the native system.
+use crate::core::theme;
 use crate::futures::futures::channel::oneshot;
+use crate::futures::subscription::{self, Subscription};
+use crate::task::{self, Task};
 
 /// An operation to be performed on the system.
 #[derive(Debug)]
 pub enum Action {
-    /// Query system information and produce `T` with the result.
+    /// Send available system information.
-    QueryInformation(oneshot::Sender<Information>),
+    GetInformation(oneshot::Sender<Information>),
+
+    /// Send the current system theme mode.
+    GetTheme(oneshot::Sender<theme::Mode>),
+
+    /// Notify to the runtime that the system theme has changed.
+    NotifyTheme(theme::Mode),
 }
 
 /// Contains information about the system (e.g. system name, processor, memory, graphics adapter).
@@ -37,3 +46,29 @@ pub struct Information {
     /// Model information for the active graphics adapter
     pub graphics_adapter: String,
 }
+
+/// Returns available system information.
+pub fn information() -> Task<Information> {
+    task::oneshot(|channel| {
+        crate::Action::System(Action::GetInformation(channel))
+    })
+}
+
+/// Returns the current system theme.
+pub fn theme() -> Task<theme::Mode> {
+    task::oneshot(|sender| crate::Action::System(Action::GetTheme(sender)))
+}
+
+/// Subscribes to system theme changes.
+pub fn theme_changes() -> Subscription<theme::Mode> {
+    #[derive(Hash)]
+    struct ThemeChanges;
+
+    subscription::filter_map(ThemeChanges, |event| {
+        let subscription::Event::SystemThemeChanged(mode) = event else {
+            return None;
+        };
+
+        Some(mode)
+    })
+}

runtime/src/window.rs

@@ -266,12 +266,12 @@ pub fn close<T>(id: Id) -> Task<T> {
 }
 
 /// Gets the window [`Id`] of the oldest window.
-pub fn get_oldest() -> Task<Option<Id>> {
+pub fn oldest() -> Task<Option<Id>> {
     task::oneshot(|channel| crate::Action::Window(Action::GetOldest(channel)))
 }
 
 /// Gets the window [`Id`] of the latest window.
-pub fn get_latest() -> Task<Option<Id>> {
+pub fn latest() -> Task<Option<Id>> {
     task::oneshot(|channel| crate::Action::Window(Action::GetLatest(channel)))
 }
 
@@ -315,14 +315,14 @@ pub fn set_resize_increments<T>(id: Id, increments: Option<Size>) -> Task<T> {
 }
 
 /// Get the window's size in logical dimensions.
-pub fn get_size(id: Id) -> Task<Size> {
+pub fn size(id: Id) -> Task<Size> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetSize(id, channel))
     })
 }
 
 /// Gets the maximized state of the window with the given [`Id`].
-pub fn get_maximized(id: Id) -> Task<bool> {
+pub fn is_maximized(id: Id) -> Task<bool> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetMaximized(id, channel))
     })
@@ -334,7 +334,7 @@ pub fn maximize<T>(id: Id, maximized: bool) -> Task<T> {
 }
 
 /// Gets the minimized state of the window with the given [`Id`].
-pub fn get_minimized(id: Id) -> Task<Option<bool>> {
+pub fn is_minimized(id: Id) -> Task<Option<bool>> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetMinimized(id, channel))
     })
@@ -346,14 +346,14 @@ pub fn minimize<T>(id: Id, minimized: bool) -> Task<T> {
 }
 
 /// Gets the position in logical coordinates of the window with the given [`Id`].
-pub fn get_position(id: Id) -> Task<Option<Point>> {
+pub fn position(id: Id) -> Task<Option<Point>> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetPosition(id, channel))
     })
 }
 
 /// Gets the scale factor of the window with the given [`Id`].
-pub fn get_scale_factor(id: Id) -> Task<f32> {
+pub fn scale_factor(id: Id) -> Task<f32> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetScaleFactor(id, channel))
     })
@@ -365,7 +365,7 @@ pub fn move_to<T>(id: Id, position: Point) -> Task<T> {
 }
 
 /// Gets the current [`Mode`] of the window.
-pub fn get_mode(id: Id) -> Task<Mode> {
+pub fn mode(id: Id) -> Task<Mode> {
     task::oneshot(move |channel| {
         crate::Action::Window(Action::GetMode(id, channel))
     })
@@ -426,7 +426,7 @@ pub fn show_system_menu<T>(id: Id) -> Task<T> {
 
 /// Gets an identifier unique to the window, provided by the underlying windowing system. This is
 /// not to be confused with [`Id`].
-pub fn get_raw_id<Message>(id: Id) -> Task<u64> {
+pub fn raw_id<Message>(id: Id) -> Task<u64> {
     task::oneshot(|channel| {
         crate::Action::Window(Action::GetRawId(id, channel))
     })

src/lib.rs

@@ -587,11 +587,12 @@ pub mod mouse {
     };
 }
 
-#[cfg(feature = "system")]
 pub mod system {
     //! Retrieve system information.
-    pub use crate::runtime::system::Information;
+    pub use crate::runtime::system::{theme, theme_changes};
-    pub use crate::shell::system::*;
+
+    #[cfg(feature = "sysinfo")]
+    pub use crate::runtime::system::{Information, information};
 }
 
 pub mod overlay {

tiny_skia/src/window/compositor.rs

@@ -100,7 +100,7 @@ impl crate::graphics::Compositor for Compositor {
         surface.layer_stack.clear();
     }
 
-    fn fetch_information(&self) -> Information {
+    fn information(&self) -> Information {
         Information {
             adapter: String::from("CPU"),
             backend: String::from("tiny-skia"),

wgpu/src/window/compositor.rs

@@ -332,7 +332,7 @@ impl graphics::Compositor for Compositor {
         );
     }
 
-    fn fetch_information(&self) -> compositor::Information {
+    fn information(&self) -> compositor::Information {
         let information = self.adapter.get_info();
 
         compositor::Information {

winit/Cargo.toml

@@ -16,7 +16,7 @@ workspace = true
 [features]
 default = ["x11", "wayland", "wayland-dlopen", "wayland-csd-adwaita"]
 debug = ["iced_debug/enable"]
-system = ["sysinfo"]
+sysinfo = ["dep:sysinfo"]
 program = []
 x11 = ["winit/x11"]
 wayland = ["winit/wayland"]

winit/src/conversion.rs

@@ -319,9 +319,6 @@ pub fn window_event(
 
             Some(Event::Window(window::Event::Moved(Point::new(x, y))))
         }
-        WindowEvent::ThemeChanged(theme) => Some(Event::Window(
-            window::Event::ThemeModeChanged(theme_mode(theme)),
-        )),
         _ => None,
     }
 }

winit/src/lib.rs

@@ -29,9 +29,6 @@ pub use winit;
 pub mod clipboard;
 pub mod conversion;
 
-#[cfg(feature = "system")]
-pub mod system;
-
 mod error;
 mod proxy;
 mod window;
@@ -53,6 +50,7 @@ use crate::futures::futures::{Future, StreamExt};
 use crate::futures::subscription;
 use crate::futures::{Executor, Runtime};
 use crate::graphics::{Compositor, compositor};
+use crate::runtime::system;
 use crate::runtime::user_interface::{self, UserInterface};
 use crate::runtime::{Action, Task};
 
@@ -126,6 +124,7 @@ where
 
     let (event_sender, event_receiver) = mpsc::unbounded();
     let (control_sender, control_receiver) = mpsc::unbounded();
+    let (system_theme_sender, system_theme_receiver) = oneshot::channel();
 
     let instance = Box::pin(run_instance::<P>(
         program,
@@ -136,6 +135,7 @@ where
         is_daemon,
         graphics_settings,
         settings.fonts,
+        system_theme_receiver,
     ));
 
     let context = task::Context::from_waker(task::noop_waker_ref());
@@ -147,6 +147,7 @@ where
         sender: mpsc::UnboundedSender<Event<Action<Message>>>,
         receiver: mpsc::UnboundedReceiver<Control>,
         error: Option<Error>,
+        system_theme: Option<oneshot::Sender<theme::Mode>>,
 
         #[cfg(target_arch = "wasm32")]
         canvas: Option<web_sys::HtmlCanvasElement>,
@@ -159,6 +160,7 @@ where
         sender: event_sender,
         receiver: control_receiver,
         error: None,
+        system_theme: Some(system_theme_sender),
 
         #[cfg(target_arch = "wasm32")]
         canvas: None,
@@ -172,10 +174,15 @@ where
         Message: std::fmt::Debug,
         F: Future<Output = ()>,
     {
-        fn resumed(
+        fn resumed(&mut self, event_loop: &winit::event_loop::ActiveEventLoop) {
-            &mut self,
+            if let Some(sender) = self.system_theme.take() {
-            _event_loop: &winit::event_loop::ActiveEventLoop,
+                let _ = sender.send(
-        ) {
+                    event_loop
+                        .system_theme()
+                        .map(conversion::theme_mode)
+                        .unwrap_or_default(),
+                );
+            }
         }
 
         fn new_events(
@@ -498,6 +505,7 @@ async fn run_instance<P>(
     is_daemon: bool,
     graphics_settings: graphics::Settings,
     default_fonts: Vec<Cow<'static, [u8]>>,
+    mut _system_theme: oneshot::Receiver<theme::Mode>,
 ) where
     P: Program + 'static,
     P::Theme: theme::Base,
@@ -518,7 +526,7 @@ async fn run_instance<P>(
     let mut clipboard = Clipboard::unconnected();
 
     #[cfg(all(feature = "linux-theme-detection", target_os = "linux"))]
-    let system_theme = {
+    let mut system_theme = {
         let to_mode = |color_scheme| match color_scheme {
             mundy::ColorScheme::NoPreference => theme::Mode::None,
             mundy::ColorScheme::Light => theme::Mode::Light,
@@ -528,7 +536,9 @@ async fn run_instance<P>(
         runtime.run(
             mundy::Preferences::stream(mundy::Interest::ColorScheme)
                 .map(move |preferences| {
-                    Action::ChangeTheme(to_mode(preferences.color_scheme))
+                    Action::System(system::Action::NotifyTheme(to_mode(
+                        preferences.color_scheme,
+                    )))
                 })
                 .boxed(),
         );
@@ -542,7 +552,10 @@ async fn run_instance<P>(
     };
 
     #[cfg(not(all(feature = "linux-theme-detection", target_os = "linux")))]
-    let system_theme = theme::Mode::None;
+    let mut system_theme =
+        _system_theme.try_recv().ok().flatten().unwrap_or_default();
+
+    log::info!("System theme: {system_theme:?}");
 
     loop {
         // Empty the queue if possible
@@ -728,6 +741,7 @@ async fn run_instance<P>(
                         run_action(
                             action,
                             &program,
+                            &mut runtime,
                             &mut compositor,
                             &mut events,
                             &mut messages,
@@ -737,6 +751,7 @@ async fn run_instance<P>(
                             &mut window_manager,
                             &mut ui_caches,
                             &mut is_window_opening,
+                            &mut system_theme,
                         );
                         actions += 1;
                     }
@@ -895,11 +910,24 @@ async fn run_instance<P>(
                             continue;
                         };
 
-                        if matches!(
+                        match window_event {
-                            window_event,
+                            winit::event::WindowEvent::Resized(_) => {
-                            winit::event::WindowEvent::Resized(_)
+                                window.raw.request_redraw();
-                        ) {
+                            }
-                            window.raw.request_redraw();
+                            winit::event::WindowEvent::ThemeChanged(theme) => {
+                                let mode = conversion::theme_mode(theme);
+
+                                if mode != system_theme {
+                                    system_theme = mode;
+
+                                    runtime.broadcast(
+                                        subscription::Event::SystemThemeChanged(
+                                            mode,
+                                        ),
+                                    );
+                                }
+                            }
+                            _ => {}
                         }
 
                         if matches!(
@@ -912,6 +940,7 @@ async fn run_instance<P>(
                                     id,
                                 )),
                                 &program,
+                                &mut runtime,
                                 &mut compositor,
                                 &mut events,
                                 &mut messages,
@@ -921,6 +950,7 @@ async fn run_instance<P>(
                                 &mut window_manager,
                                 &mut ui_caches,
                                 &mut is_window_opening,
+                                &mut system_theme,
                             );
                         } else {
                             window.state.update(
@@ -1132,6 +1162,7 @@ fn update<P: Program, E: Executor>(
 fn run_action<'a, P, C>(
     action: Action<P::Message>,
     program: &'a program::Instance<P>,
+    runtime: &mut Runtime<P::Executor, Proxy<P::Message>, Action<P::Message>>,
     compositor: &mut Option<C>,
     events: &mut Vec<(window::Id, core::Event)>,
     messages: &mut Vec<P::Message>,
@@ -1144,13 +1175,13 @@ fn run_action<'a, P, C>(
     window_manager: &mut WindowManager<P, C>,
     ui_caches: &mut FxHashMap<window::Id, user_interface::Cache>,
     is_window_opening: &mut bool,
+    system_theme: &mut theme::Mode,
 ) where
     P: Program,
     C: Compositor<Renderer = P::Renderer> + 'static,
     P::Theme: theme::Base,
 {
     use crate::runtime::clipboard;
-    use crate::runtime::system;
     use crate::runtime::window;
 
     match action {
@@ -1458,21 +1489,44 @@ fn run_action<'a, P, C>(
             }
         },
         Action::System(action) => match action {
-            system::Action::QueryInformation(_channel) => {
+            system::Action::GetInformation(_channel) => {
-                #[cfg(feature = "system")]
+                #[cfg(feature = "sysinfo")]
                 {
                     if let Some(compositor) = compositor {
-                        let graphics_info = compositor.fetch_information();
+                        let graphics_info = compositor.information();
 
                         let _ = std::thread::spawn(move || {
-                            let information =
+                            let information = system_information(graphics_info);
-                                crate::system::information(graphics_info);
 
                             let _ = _channel.send(information);
                         });
                     }
                 }
             }
+            system::Action::GetTheme(channel) => {
+                let _ = channel.send(*system_theme);
+            }
+            system::Action::NotifyTheme(mode) => {
+                if mode != *system_theme {
+                    *system_theme = mode;
+
+                    runtime.broadcast(subscription::Event::SystemThemeChanged(
+                        mode,
+                    ));
+                }
+
+                let Some(theme) = conversion::window_theme(mode) else {
+                    return;
+                };
+
+                for (_id, window) in window_manager.iter_mut() {
+                    window.state.update(
+                        program,
+                        &window.raw,
+                        &winit::event::WindowEvent::ThemeChanged(theme),
+                    );
+                }
+            }
         },
         Action::Widget(operation) => {
             let mut current_operation = Some(operation);
@@ -1501,27 +1555,6 @@ fn run_action<'a, P, C>(
                 let _ = channel.send(Ok(()));
             }
         }
-        Action::ChangeTheme(mode) => {
-            let Some(theme) = conversion::window_theme(mode) else {
-                return;
-            };
-
-            for (id, window) in window_manager.iter_mut() {
-                window.raw.set_theme(Some(theme));
-                window.state.update(
-                    program,
-                    &window.raw,
-                    &winit::event::WindowEvent::ThemeChanged(theme),
-                );
-
-                events.push((
-                    id,
-                    core::Event::Window(core::window::Event::ThemeModeChanged(
-                        mode,
-                    )),
-                ));
-            }
-        }
         Action::Reload => {
             for (id, window) in window_manager.iter_mut() {
                 let Some(ui) = interfaces.remove(&id) else {
@@ -1602,3 +1635,37 @@ pub fn user_force_quit(
         _ => false,
     }
 }
+
+#[cfg(feature = "sysinfo")]
+fn system_information(
+    graphics: compositor::Information,
+) -> system::Information {
+    use sysinfo::{Process, System};
+
+    let mut system = System::new_all();
+    system.refresh_all();
+
+    let cpu_brand = system
+        .cpus()
+        .first()
+        .map(|cpu| cpu.brand().to_string())
+        .unwrap_or_default();
+
+    let memory_used = sysinfo::get_current_pid()
+        .and_then(|pid| system.process(pid).ok_or("Process not found"))
+        .map(Process::memory)
+        .ok();
+
+    system::Information {
+        system_name: System::name(),
+        system_kernel: System::kernel_version(),
+        system_version: System::long_os_version(),
+        system_short_version: System::os_version(),
+        cpu_brand,
+        cpu_cores: system.physical_core_count(),
+        memory_total: system.total_memory(),
+        memory_used,
+        graphics_adapter: graphics.adapter,
+        graphics_backend: graphics.backend,
+    }
+}

winit/src/system.rs

@@ -3,13 +3,6 @@ use crate::graphics::compositor;
 use crate::runtime::system::{Action, Information};
 use crate::runtime::{self, Task};
 
-/// Query for available system information.
-pub fn fetch_information() -> Task<Information> {
-    runtime::task::oneshot(|channel| {
-        runtime::Action::System(Action::QueryInformation(channel))
-    })
-}
-
 pub(crate) fn information(
     graphics_info: compositor::Information,
 ) -> Information {

winit/src/window/state.rs

@@ -53,11 +53,6 @@ where
         window: &Window,
         system_theme: theme::Mode,
     ) -> Self {
-        let system_theme = window
-            .theme()
-            .map(conversion::theme_mode)
-            .unwrap_or(system_theme);
-
         let title = program.title(window_id);
         let scale_factor = program.scale_factor(window_id);
         let theme = program.theme(window_id);