input 0.2.0

libinput bindings for rust
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78

//! Device event types

use super::EventTrait;
use {AsRaw, FromRaw};
use ffi;

/// Common functions all Device-Events implement.
pub trait DeviceEventTrait: AsRaw<ffi::libinput_event_device_notify> {
    /// Convert into a general `DeviceEvent` again
    fn into_device_event(self) -> DeviceEvent
        where Self: Sized
    {
        unsafe { DeviceEvent::from_raw(self.as_raw_mut()) }
    }
}

impl<T: AsRaw<ffi::libinput_event_device_notify>> DeviceEventTrait for T {}

/// A device related `Event`
#[derive(Debug, PartialEq, Eq, Hash)]
pub enum DeviceEvent {
    /// Signals that a device has been added to the context.
    Added(DeviceAddedEvent),
    /// Signals that a device has been removed.
    Removed(DeviceRemovedEvent),
}

impl EventTrait for DeviceEvent {
    #[doc(hidden)]
    fn as_raw_event(&self) -> *mut ffi::libinput_event {
        match *self {
            DeviceEvent::Added(ref event) => event.as_raw_event(),
            DeviceEvent::Removed(ref event) => event.as_raw_event(),
        }
    }
}

impl FromRaw<ffi::libinput_event_device_notify> for DeviceEvent {
    unsafe fn from_raw(event: *mut ffi::libinput_event_device_notify) -> Self {
        let base = ffi::libinput_event_device_notify_get_base_event(event);
        match ffi::libinput_event_get_type(base) {
            ffi::libinput_event_type::LIBINPUT_EVENT_DEVICE_ADDED => {
                DeviceEvent::Added(DeviceAddedEvent::from_raw(event))
            }
            ffi::libinput_event_type::LIBINPUT_EVENT_DEVICE_REMOVED => {
                DeviceEvent::Removed(DeviceRemovedEvent::from_raw(event))
            }
            _ => unreachable!(),
        }
    }
}

impl AsRaw<ffi::libinput_event_device_notify> for DeviceEvent {
    fn as_raw(&self) -> *const ffi::libinput_event_device_notify {
        match *self {
            DeviceEvent::Added(ref event) => event.as_raw(),
            DeviceEvent::Removed(ref event) => event.as_raw(),
        }
    }
}

ffi_event_struct!(
/// Signals that a device has been added to the context.
///
/// The device will not be read until the next time the user calls
/// `Libinput::dispatch` and data is available.
///
/// This allows setting up initial device configuration before any events are created.
struct DeviceAddedEvent, ffi::libinput_event_device_notify, ffi::libinput_event_device_notify_get_base_event);
ffi_event_struct!(
/// Signals that a device has been added to the context.
///
/// The device will not be read until the next time the user calls
/// `Libinput::dispatch` and data is available.
///
/// This allows setting up initial device configuration before any events are
/// created.
struct DeviceRemovedEvent, ffi::libinput_event_device_notify, ffi::libinput_event_device_notify_get_base_event);