Merge pull request #60 from nicokoch/master

Add `Device::send_event` and `RawDevice::send_event`.

examples/blink_keyboard_leds.rs

@@ -0,0 +1,31 @@
+use evdev::{EventType, InputEvent, LedType};
+
+mod _pick_device;
+
+fn main() {
+    let mut d = _pick_device::pick_device();
+    println!("{}", d);
+    println!("Blinking the Keyboard LEDS...");
+    for i in 0..5 {
+        let on = i % 2 != 0;
+        d.send_events(&[
+            InputEvent::new(
+                EventType::LED,
+                LedType::LED_CAPSL.0,
+                if on { i32::MAX } else { 0 },
+            ),
+            InputEvent::new(
+                EventType::LED,
+                LedType::LED_NUML.0,
+                if on { i32::MAX } else { 0 },
+            ),
+            InputEvent::new(
+                EventType::LED,
+                LedType::LED_SCROLLL.0,
+                if on { i32::MAX } else { 0 },
+            ),
+        ])
+        .unwrap();
+        std::thread::sleep(std::time::Duration::from_secs(1));
+    }
+}

src/raw_stream.rs

@@ -1,4 +1,5 @@
 use std::fs::{File, OpenOptions};
+use std::io::Write;
 use std::mem::MaybeUninit;
 use std::os::unix::io::{AsRawFd, RawFd};
 use std::path::Path;
@@ -610,6 +611,17 @@ impl RawDevice {
         }
         Ok(())
     }
+
+    /// Send an event to the device.
+    ///
+    /// Events that are typically sent to devices are
+    /// [EventType::LED] (turn device LEDs on and off),
+    /// [EventType::SOUND] (play a sound on the device)
+    /// and [EventType::FORCEFEEDBACK] (play force feedback effects on the device, i.e. rumble).
+    pub fn send_events(&mut self, events: &[InputEvent]) -> io::Result<()> {
+        let bytes = unsafe { crate::cast_to_bytes(events) };
+        self.file.write_all(bytes)
+    }
 }
 
 impl AsRawFd for RawDevice {

src/sync_stream.rs

@@ -342,6 +342,16 @@ impl Device {
     pub fn ungrab(&mut self) -> io::Result<()> {
         self.raw.ungrab()
     }
+
+    /// Send an event to the device.
+    ///
+    /// Events that are typically sent to devices are
+    /// [EventType::LED] (turn device LEDs on and off),
+    /// [EventType::SOUND] (play a sound on the device)
+    /// and [EventType::FORCEFEEDBACK] (play force feedback effects on the device, i.e. rumble).
+    pub fn send_events(&mut self, events: &[InputEvent]) -> io::Result<()> {
+        self.raw.send_events(events)
+    }
 }
 
 impl AsRawFd for Device {