device_query_revamped 2.2.1

A basic library for querying keyboard and mouse state on-demand without a window.
Documentation 
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//! Devices events listeners.

mod callback;
mod event_loop;
mod utils;

pub use self::callback::*;
use self::event_loop::*;

use MouseButton;
use {DeviceQuery, Keycode};
use {DeviceState, MousePosition};

/// All the supported devices events.
pub trait DeviceEvents: DeviceQuery {
    /// Register an on key down event callback.
    fn on_key_down<Callback: Fn(&Keycode) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback>;
    /// Register an on key up event callback.
    fn on_key_up<Callback: Fn(&Keycode) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback>;

    /// Register an on mouse move event callback.
    fn on_mouse_move<Callback: Fn(&MousePosition) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback>;
    /// Register an on mouse button down event callback.
    fn on_mouse_down<Callback: Fn(&MouseButton) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback>;
    /// Register an on mouse button up event callback.
    fn on_mouse_up<Callback: Fn(&MouseButton) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback>;
}

impl DeviceEvents for DeviceState {
    fn on_key_down<Callback: Fn(&Keycode) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback> {
        EVENT_LOOP
            .lock()
            .expect("Couldn't lock EVENT_LOOP")
            .on_key_down(callback)
    }

    fn on_key_up<Callback: Fn(&Keycode) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback> {
        EVENT_LOOP
            .lock()
            .expect("Couldn't lock EVENT_LOOP")
            .on_key_up(callback)
    }

    fn on_mouse_move<Callback: Fn(&MousePosition) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback> {
        EVENT_LOOP
            .lock()
            .expect("Couldn't lock EVENT_LOOP")
            .on_mouse_move(callback)
    }

    fn on_mouse_down<Callback: Fn(&MouseButton) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback> {
        EVENT_LOOP
            .lock()
            .expect("Couldn't lock EVENT_LOOP")
            .on_mouse_down(callback)
    }

    fn on_mouse_up<Callback: Fn(&MouseButton) + Sync + Send + 'static>(
        &self,
        callback: Callback,
    ) -> CallbackGuard<Callback> {
        EVENT_LOOP
            .lock()
            .expect("Couldn't lock EVENT_LOOP")
            .on_mouse_up(callback)
    }
}