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Add version of listen which doesn't run new CFRunLoop #76

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12c2ff6
Add version of listen which doesn't run new CFRunLoop
serhii-tokariev84 Jan 29, 2022
e86e07b
Add use for cacao crate
serhii-tokariev84 Jan 29, 2022
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58 changes: 57 additions & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -228,7 +228,10 @@ mod macos;
#[cfg(target_os = "macos")]
pub use crate::macos::Keyboard;
#[cfg(target_os = "macos")]
use crate::macos::{display_size as _display_size, listen as _listen, simulate as _simulate};
use crate::macos::{
display_size as _display_size, listen as _listen, listen_non_blocking as _listen_non_blocking,
simulate as _simulate,
};

#[cfg(target_os = "linux")]
mod linux;
Expand Down Expand Up @@ -272,6 +275,59 @@ where
_listen(callback)
}

/// Listening to global events. Caveat: On MacOS, you require the listen
/// loop needs to be the primary app (no fork before) and need to have accessibility
/// settings enabled.
///
/// ```no_run
/// use rdev::{listen_non_blocking, Event};
/// use cacao::{
/// macos::{
/// menu::{Menu, MenuItem},
/// window::Window,
/// App, AppDelegate,
/// },
/// notification_center::Dispatcher,
/// view::View,
/// };
///
/// #[derive(Default)]
/// pub struct BaseApp {
/// pub window: Window,
/// }
///
/// fn callback(event: Event) {
/// println!("My callback {:?}", event);
/// match event.name{
/// Some(string) => println!("User wrote {:?}", string),
/// None => ()
/// }
/// }
///
/// impl AppDelegate for BaseApp {
/// fn did_finish_launching(&self) {
/// self.window.set_title("RDev");
/// self.window.show();
///
/// // This will not block
/// if let Err(error) = listen(callback) {
/// println!("Error: {:?}", error)
/// }
/// }
///
/// fn should_terminate_after_last_window_closed(&self) -> bool {
/// false
/// }
/// }
/// ```
#[cfg(target_os = "macos")]
pub fn listen_non_blocking<T>(callback: T) -> Result<(), ListenError>
where
T: FnMut(Event) + 'static,
{
_listen_non_blocking(callback)
}

/// Sending some events
///
/// ```no_run
Expand Down
33 changes: 33 additions & 0 deletions src/macos/listen.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -61,3 +61,36 @@ where
}
Ok(())
}


#[link(name = "Cocoa", kind = "framework")]
pub fn listen_non_blocking<T>(callback: T) -> Result<(), ListenError>
where
T: FnMut(Event) + 'static,
{
unsafe {
GLOBAL_CALLBACK = Some(Box::new(callback));
let _pool = NSAutoreleasePool::new(nil);
let tap = CGEventTapCreate(
CGEventTapLocation::HID, // HID, Session, AnnotatedSession,
kCGHeadInsertEventTap,
CGEventTapOption::ListenOnly,
kCGEventMaskForAllEvents,
raw_callback,
nil,
);
if tap.is_null() {
return Err(ListenError::EventTapError);
}
let _loop = CFMachPortCreateRunLoopSource(nil, tap, 0);
if _loop.is_null() {
return Err(ListenError::LoopSourceError);
}

let current_loop = CFRunLoopGetCurrent();
CFRunLoopAddSource(current_loop, _loop, kCFRunLoopCommonModes);

CGEventTapEnable(tap, true);
}
Ok(())
}
1 change: 1 addition & 0 deletions src/macos/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -12,4 +12,5 @@ pub use crate::macos::display::display_size;
pub use crate::macos::grab::grab;
pub use crate::macos::keyboard::Keyboard;
pub use crate::macos::listen::listen;
pub use crate::macos::listen::listen_non_blocking;
pub use crate::macos::simulate::simulate;