winit/platform_impl/linux/x11/ime/
inner.rs

1use std::collections::HashMap;
2use std::mem;
3use std::sync::Arc;
4
5use super::{ffi, XConnection, XError};
6
7use super::context::ImeContext;
8use super::input_method::{InputMethod, PotentialInputMethods};
9use crate::platform_impl::platform::x11::ime::ImeEventSender;
10
11pub(crate) unsafe fn close_im(xconn: &Arc<XConnection>, im: ffi::XIM) -> Result<(), XError> {
12    unsafe { (xconn.xlib.XCloseIM)(im) };
13    xconn.check_errors()
14}
15
16pub(crate) unsafe fn destroy_ic(xconn: &Arc<XConnection>, ic: ffi::XIC) -> Result<(), XError> {
17    unsafe { (xconn.xlib.XDestroyIC)(ic) };
18    xconn.check_errors()
19}
20
21pub(crate) struct ImeInner {
22    pub xconn: Arc<XConnection>,
23    pub im: Option<InputMethod>,
24    pub potential_input_methods: PotentialInputMethods,
25    pub contexts: HashMap<ffi::Window, Option<ImeContext>>,
26    // WARNING: this is initially zeroed!
27    pub destroy_callback: ffi::XIMCallback,
28    pub event_sender: ImeEventSender,
29    // Indicates whether or not the input method was destroyed on the server end
30    // (i.e. if ibus/fcitx/etc. was terminated/restarted)
31    pub is_destroyed: bool,
32    pub is_fallback: bool,
33}
34
35impl ImeInner {
36    pub(crate) fn new(
37        xconn: Arc<XConnection>,
38        potential_input_methods: PotentialInputMethods,
39        event_sender: ImeEventSender,
40    ) -> Self {
41        ImeInner {
42            xconn,
43            im: None,
44            potential_input_methods,
45            contexts: HashMap::new(),
46            destroy_callback: unsafe { mem::zeroed() },
47            event_sender,
48            is_destroyed: false,
49            is_fallback: false,
50        }
51    }
52
53    pub unsafe fn close_im_if_necessary(&self) -> Result<bool, XError> {
54        match self.im.as_ref() {
55            Some(im) if !self.is_destroyed => unsafe { close_im(&self.xconn, im.im).map(|_| true) },
56            _ => Ok(false),
57        }
58    }
59
60    pub unsafe fn destroy_ic_if_necessary(&self, ic: ffi::XIC) -> Result<bool, XError> {
61        if !self.is_destroyed {
62            unsafe { destroy_ic(&self.xconn, ic) }.map(|_| true)
63        } else {
64            Ok(false)
65        }
66    }
67
68    pub unsafe fn destroy_all_contexts_if_necessary(&self) -> Result<bool, XError> {
69        for context in self.contexts.values().flatten() {
70            unsafe { self.destroy_ic_if_necessary(context.ic)? };
71        }
72        Ok(!self.is_destroyed)
73    }
74}
winit/platform_impl/linux/x11/ime/inner.rs

winit/platform_impl/linux/x11/ime/
inner.rs
