Add suspension

src/main.rs

@@ -1,8 +1,10 @@
+use std::sync::{Arc, Mutex};
 use rdev::{simulate, Event, EventType, SimulateError};
 use std::process::exit;
 
 const SPACE_KEY: rdev::Key = rdev::Key::Space;
 const ESCAPE_KEY: rdev::Key = rdev::Key::Escape;
+const SUSPEND_KEY: rdev::Key = rdev::Key::SemiColon;
 
 fn send(event_type: EventType) {
 	match simulate(&event_type) {
@@ -14,18 +16,36 @@ fn send(event_type: EventType) {
 }
 
 fn main() {
-	let callback = |event: Event| {
+    let suspended = Arc::new(Mutex::new(false));
+    let suspended_clone = Arc::clone(&suspended);
+
+    let callback = move |event: Event| {
         let mut matched: bool = false;
         match event.event_type {
-			EventType::KeyPress(SPACE_KEY) => {
+            EventType::KeyPress(key) if key == SPACE_KEY => {
+           		let suspended = suspended.lock().unwrap();
+                if *suspended {
+					return Some(event);
+				} else {
 					send(EventType::ButtonPress(rdev::Button::Left));
                 	matched = true;
+				}
             },
-			EventType::KeyRelease(SPACE_KEY) => {
+            EventType::KeyRelease(key) if key == SPACE_KEY => {
+          		let suspended = suspended.lock().unwrap();
+                if *suspended {
+					return Some(event);
+				} else {
 					send(EventType::ButtonRelease(rdev::Button::Left));
                 	matched = true;
+				}
             },
-			EventType::KeyPress(ESCAPE_KEY) => exit(0),
+            EventType::KeyPress(key) if key == SUSPEND_KEY => {
+                let mut suspended = suspended_clone.lock().unwrap();
+                *suspended = !*suspended;
+                println!("Suspend: {}", *suspended);
+            }
+            EventType::KeyPress(key) if key == ESCAPE_KEY => exit(0),
             _ => ()
         }
         if !matched {
@@ -35,7 +55,7 @@ fn main() {
         }
     };
 
-	println!("Escape: Quit program\nSpace: Left mouse click");
+    println!("Escape: Quit program\nSemi colon (;): Suspend\nSpace: Left mouse click");
 
     if let Err(error) = rdev::grab(callback) {
         eprintln!("Error: {:?}", error);