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use core_foundation::base::{CFRelease, CFRetain, CFTypeID};
use foreign_types::ForeignType;
/// Possible source states of an event source.
#[repr(C)]
#[derive(Clone, Copy, Debug)]
pub enum CGEventSourceStateID {
Private = -1,
CombinedSessionState = 0,
HIDSystemState = 1,
}
foreign_type! {
#[doc(hidden)]
pub unsafe type CGEventSource {
type CType = ::sys::CGEventSource;
fn drop = |p| CFRelease(p as *mut _);
fn clone = |p| CFRetain(p as *const _) as *mut _;
}
}
impl CGEventSource {
pub fn type_id() -> CFTypeID {
unsafe {
CGEventSourceGetTypeID()
}
}
pub fn new(state_id: CGEventSourceStateID) -> Result<Self, ()> {
unsafe {
let event_source_ref = CGEventSourceCreate(state_id);
if !event_source_ref.is_null() {
Ok(Self::from_ptr(event_source_ref))
} else {
Err(())
}
}
}
}
#[link(name = "CoreGraphics", kind = "framework")]
extern {
/// Return the type identifier for the opaque type `CGEventSourceRef'.
fn CGEventSourceGetTypeID() -> CFTypeID;
/// Return a Quartz event source created with a specified source state.
fn CGEventSourceCreate(stateID: CGEventSourceStateID) -> ::sys::CGEventSourceRef;
}