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
82
83
84
85
86
87

use crate::client::Client;
use crate::ifs::wl_surface::WlSurface;
use crate::leaks::Tracker;
use crate::object::Version;
use crate::wire::WpViewportId;
use crate::wire::wp_viewport::*;
use jay_proc::Object;
use std::rc::Rc;
use thiserror::Error;

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

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

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

impl WpViewportRequestHandler for WpViewport {
    type Error = WpViewportError;

    fn destroy(&self, _req: Destroy, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        let pending = &mut *self.surface.pending.borrow_mut();
        pending.src_rect = Some(None);
        pending.dst_size = Some(None);
        self.surface.viewporter.take();
        self.client.remove_obj(self);
        Ok(())
    }

    fn set_source(&self, req: SetSource, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        let rect = if req.x == -1 && req.y == -1 && req.width == -1 && req.height == -1 {
            None
        } else {
            let invalid = req.x < 0 || req.y < 0 || req.width <= 0 || req.height <= 0;
            if invalid {
                return Err(WpViewportError::InvalidSourceRect);
            }
            Some([req.x, req.y, req.width, req.height])
        };
        self.surface.pending.borrow_mut().src_rect = Some(rect);
        Ok(())
    }

    fn set_destination(&self, req: SetDestination, _slf: &Rc<Self>) -> Result<(), Self::Error> {
        let size = if req.width == -1 && req.height == -1 {
            None
        } else if req.width <= 0 || req.height <= 0 {
            return Err(WpViewportError::InvalidDestRect);
        } else {
            Some((req.width, req.height))
        };
        self.surface.pending.borrow_mut().dst_size = Some(size);
        Ok(())
    }
}

#[derive(Debug, Error)]
pub enum WpViewportError {
    #[error("The surface already has a viewport")]
    ViewportExists,
    #[error("Rectangle is empty or outside the first quadrant")]
    InvalidSourceRect,
    #[error("Rectangle is empty")]
    InvalidDestRect,
}