49 lines
1.1 KiB
Rust
49 lines
1.1 KiB
Rust
|
// This code is a port of the libxkbcommon "interactive-evdev.c" example
|
||
|
|
// https://github.com/xkbcommon/libxkbcommon/blob/master/tools/interactive-evdev.c
|
||
|
|
|
||
|
|
use scopeguard::ScopeGuard;
|
||
|
|
|
||
|
|
use super::ffi::{XKB_CONTEXT_NO_FLAGS, xkb_context, xkb_context_new, xkb_context_unref};
|
||
|
|
use thiserror::Error;
|
||
|
|
use anyhow::Result;
|
||
|
|
|
||
|
|
pub struct Context {
|
||
|
|
context: *mut xkb_context,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Context {
|
||
|
|
pub fn new() -> Result<Context> {
|
||
|
|
let raw_context = unsafe { xkb_context_new(XKB_CONTEXT_NO_FLAGS) };
|
||
|
|
let context = scopeguard::guard(raw_context, |raw_context| {
|
||
|
|
unsafe {
|
||
|
|
xkb_context_unref(raw_context);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
if raw_context.is_null() {
|
||
|
|
return Err(ContextError::FailedCreation().into());
|
||
|
|
}
|
||
|
|
|
||
|
|
Ok(Self {
|
||
|
|
context: ScopeGuard::into_inner(context),
|
||
|
|
})
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn get_handle(&self) -> *mut xkb_context {
|
||
|
|
self.context
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
impl Drop for Context {
|
||
|
|
fn drop(&mut self) {
|
||
|
|
unsafe {
|
||
|
|
xkb_context_unref(self.context);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
#[derive(Error, Debug)]
|
||
|
|
pub enum ContextError {
|
||
|
|
#[error("could not create xkb context")]
|
||
|
|
FailedCreation(),
|
||
|
|
}
|