49 lines
2.0 KiB
Rust
49 lines
2.0 KiB
Rust
|
//! P5-46 — System power management (call continuity).
|
||
|
|
//!
|
||
|
|
//! Prevents the system from sleeping / turning off the display while a voice or
|
||
|
|
//! video call is active, then releases the request when the call ends. The web
|
||
|
|
//! client calls `set_call_active(true|false)` from `useTauriCallPower` as the
|
||
|
|
//! call-embed atom transitions.
|
||
|
|
//!
|
||
|
|
//! Windows: `SetThreadExecutionState`. The request is per-thread and persists
|
||
|
|
//! until cleared, so we run every set/clear on the **main thread** (via
|
||
|
|
//! `run_on_main_thread`) to guarantee the clear cancels the matching set even
|
||
|
|
//! though Tauri commands otherwise run on a pool thread.
|
||
|
|
//!
|
||
|
|
//! Other platforms are a no-op for now (macOS would use `IOPMAssertionCreate`,
|
||
|
|
//! Linux `org.freedesktop.ScreenSaver`/`login1` inhibit) — tracked as a future
|
||
|
|
//! extension; the command stays cross-platform so the web side is unconditional.
|
||
|
|
|
||
|
|
use tauri::AppHandle;
|
||
|
|
|
||
|
|
#[tauri::command]
|
||
|
|
pub fn set_call_active(app: AppHandle, active: bool) {
|
||
|
|
#[cfg(target_os = "windows")]
|
||
|
|
{
|
||
|
|
let _ = app.run_on_main_thread(move || {
|
||
|
|
use windows::Win32::System::Power::{
|
||
|
|
SetThreadExecutionState, ES_CONTINUOUS, ES_DISPLAY_REQUIRED, ES_SYSTEM_REQUIRED,
|
||
|
|
};
|
||
|
|
let flags = if active {
|
||
|
|
ES_CONTINUOUS | ES_SYSTEM_REQUIRED | ES_DISPLAY_REQUIRED
|
||
|
|
} else {
|
||
|
|
// Clearing to ES_CONTINUOUS alone releases the sleep/display
|
||
|
|
// requirement while leaving no lingering per-thread state.
|
||
|
|
ES_CONTINUOUS
|
||
|
|
};
|
||
|
|
// Safety: FFI call with no pointers; returns the previous state,
|
||
|
|
// which we don't need.
|
||
|
|
unsafe {
|
||
|
|
SetThreadExecutionState(flags);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(not(target_os = "windows"))]
|
||
|
|
{
|
||
|
|
// No-op on non-Windows platforms (see module docs). Bind the args so the
|
||
|
|
// signature stays identical cross-platform and no unused warnings fire.
|
||
|
|
let _ = (&app, active);
|
||
|
|
}
|
||
|
|
}
|