jay-compositor 1.15.0

The Jay compositor
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
79
80
81

use crate::client::Client;
use crate::ifs::wl_surface::WlSurface;
use crate::leaks::Tracker;
use crate::object::Version;
use crate::wire::WpCommitTimerV1Id;
use crate::wire::wp_commit_timer_v1::Destroy;
use crate::wire::wp_commit_timer_v1::SetTimestamp;
use crate::wire::wp_commit_timer_v1::WpCommitTimerV1RequestHandler;
use jay_proc::Object;
use std::rc::Rc;
use thiserror::Error;

#[derive(Object)]
pub struct WpCommitTimerV1 {
    id: WpCommitTimerV1Id,
    client: Rc<Client>,
    surface: Rc<WlSurface>,
    pub tracker: Tracker<Self>,
    version: Version,
}

impl WpCommitTimerV1 {
    pub fn new(id: WpCommitTimerV1Id, version: Version, surface: &Rc<WlSurface>) -> Self {
        Self {
            id,
            client: surface.client.clone(),
            surface: surface.clone(),
            tracker: Default::default(),
            version,
        }
    }

    pub fn install(self: &Rc<Self>) -> Result<(), WpCommitTimerV1Error> {
        if self.surface.commit_timer.is_some() {
            return Err(WpCommitTimerV1Error::Exists);
        }
        self.surface.commit_timer.set(Some(self.clone()));
        Ok(())
    }
}

impl WpCommitTimerV1RequestHandler for WpCommitTimerV1 {
    type Error = WpCommitTimerV1Error;

    fn set_timestamp(&self, req: SetTimestamp, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        if req.tv_nsec >= 1_000_000_000 {
            return Err(WpCommitTimerV1Error::InvalidNsec);
        }
        let nsec = req
            .tv_sec
            .checked_mul(1_000_000_000)
            .and_then(|n| n.checked_add(req.tv_nsec as u64));
        let Some(nsec) = nsec else {
            return Err(WpCommitTimerV1Error::Overflow);
        };
        let pending = &mut *self.surface.pending.borrow_mut();
        if pending.commit_time.is_some() {
            return Err(WpCommitTimerV1Error::TimestampExists);
        }
        pending.commit_time = Some(nsec);
        Ok(())
    }

    fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        self.surface.commit_timer.take();
        self.client.remove_obj(self);
        Ok(())
    }
}

#[derive(Debug, Error)]
pub enum WpCommitTimerV1Error {
    #[error("The surface already has a commit timer extension attached")]
    Exists,
    #[error("The tv_nsec is larger than 999_999_999")]
    InvalidNsec,
    #[error("The timestamp overflowed")]
    Overflow,
    #[error("The commit already has a timestamp")]
    TimestampExists,
}