Add CEF runtime to Linux builds (#494)

2026-07-05 12:31:47 +02:00 · 2026-07-03 14:22:47 -07:00
parent 1206d5889d
commit cc05fec59d
21 changed files with 1410 additions and 210 deletions
@@ -0,0 +1,151 @@
+use std::sync::{Arc, Mutex};
+use std::time::Duration;
+
+use log::{debug, warn};
+use tauri::{AppHandle, Emitter, Runtime};
+
+pub const INITIAL_APPEARANCE_GLOBAL: &str = "__YAAK_INITIAL_APPEARANCE__";
+pub const INITIAL_APPEARANCE_SOURCE_GLOBAL: &str = "__YAAK_INITIAL_APPEARANCE_SOURCE__";
+pub const SYSTEM_APPEARANCE_CHANGE_EVENT: &str = "system_appearance_change";
+
+const SYSTEM_APPEARANCE_POLL_INTERVAL: Duration = Duration::from_secs(1);
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum Appearance {
+    Dark,
+    Light,
+}
+
+impl Appearance {
+    pub fn as_str(self) -> &'static str {
+        match self {
+            Self::Dark => "dark",
+            Self::Light => "light",
+        }
+    }
+}
+
+#[derive(Clone, Copy, Debug, Eq, PartialEq)]
+pub enum InitialAppearanceSource {
+    Settings,
+    LinuxSystem,
+}
+
+impl InitialAppearanceSource {
+    fn as_str(self) -> &'static str {
+        match self {
+            Self::Settings => "settings",
+            Self::LinuxSystem => "linux-system",
+        }
+    }
+}
+
+#[derive(Clone)]
+pub struct SystemAppearanceState {
+    last_appearance: Arc<Mutex<Option<Appearance>>>,
+}
+
+pub fn initialization_script(appearance: Appearance, source: InitialAppearanceSource) -> String {
+    let appearance = appearance.as_str();
+    let source = source.as_str();
+    format!(
+        "window.{INITIAL_APPEARANCE_GLOBAL} = {appearance:?};\
+        window.{INITIAL_APPEARANCE_SOURCE_GLOBAL} = {source:?};"
+    )
+}
+
+#[cfg(target_os = "linux")]
+pub fn system_appearance() -> Option<Appearance> {
+    if let Some(appearance) = gsettings_system_appearance() {
+        return Some(appearance);
+    }
+
+    match dark_light::detect() {
+        Ok(dark_light::Mode::Dark) => Some(Appearance::Dark),
+        Ok(dark_light::Mode::Light) => Some(Appearance::Light),
+        Ok(dark_light::Mode::Unspecified) => None,
+        Err(err) => {
+            debug!("Failed to detect Linux system appearance: {err:?}");
+            None
+        }
+    }
+}
+
+#[cfg(not(target_os = "linux"))]
+pub fn system_appearance() -> Option<Appearance> {
+    None
+}
+
+#[cfg(target_os = "linux")]
+pub fn watch<R: Runtime>(app_handle: AppHandle<R>) -> Option<SystemAppearanceState> {
+    let last_appearance = system_appearance();
+    if last_appearance.is_none() {
+        debug!("Linux system appearance detection unavailable");
+        return None;
+    }
+
+    let state = SystemAppearanceState { last_appearance: Arc::new(Mutex::new(last_appearance)) };
+    let thread_state = state.clone();
+    let _ = std::thread::spawn(move || {
+        loop {
+            std::thread::sleep(SYSTEM_APPEARANCE_POLL_INTERVAL);
+            emit_change(&app_handle, &thread_state);
+        }
+    });
+
+    Some(state)
+}
+
+#[cfg(not(target_os = "linux"))]
+pub fn watch<R: Runtime>(_app_handle: AppHandle<R>) -> Option<SystemAppearanceState> {
+    None
+}
+
+#[cfg(target_os = "linux")]
+pub fn emit_change<R: Runtime>(app_handle: &AppHandle<R>, state: &SystemAppearanceState) {
+    let appearance = system_appearance();
+    let mut last_appearance =
+        state.last_appearance.lock().expect("system appearance lock poisoned");
+    if appearance == *last_appearance {
+        return;
+    }
+
+    *last_appearance = appearance;
+    if let Some(appearance) = appearance {
+        let appearance = appearance.as_str();
+        debug!("System appearance changed to {appearance}");
+        if let Err(err) = app_handle.emit(SYSTEM_APPEARANCE_CHANGE_EVENT, appearance) {
+            warn!("Failed to emit system appearance change: {err:?}");
+        }
+    }
+}
+
+#[cfg(target_os = "linux")]
+fn gsettings_system_appearance() -> Option<Appearance> {
+    let color_scheme = std::process::Command::new("gsettings")
+        .args(["get", "org.gnome.desktop.interface", "color-scheme"])
+        .output()
+        .ok()
+        .and_then(|output| String::from_utf8(output.stdout).ok())
+        .unwrap_or_default();
+
+    if color_scheme.contains("prefer-dark") {
+        return Some(Appearance::Dark);
+    }
+    if color_scheme.contains("prefer-light") {
+        return Some(Appearance::Light);
+    }
+
+    let gtk_theme = std::process::Command::new("gsettings")
+        .args(["get", "org.gnome.desktop.interface", "gtk-theme"])
+        .output()
+        .ok()
+        .and_then(|output| String::from_utf8(output.stdout).ok())
+        .unwrap_or_default();
+
+    if gtk_theme.to_lowercase().contains("dark") {
+        return Some(Appearance::Dark);
+    }
+
+    (!gtk_theme.trim().is_empty()).then_some(Appearance::Light)
+}