PolytreeDE/polytreewm
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Code Issues 4 Releases Activity

Implement Xbase in Rust

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This commit is contained in:
Alex Kotov 2022-09-09 18:21:36 +04:00
parent ff9dabe3cd
commit f6ee65063c
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
1 changed files with 42 additions and 0 deletions
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42
rust-polytreewm/src/xbase.rs
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@ -1,18 +1,26 @@
use crate::geom;
use std::os::raw::*;
use std::ptr::null;
use x11::xlib::{self, Display};
pub type ErrorHandler =
unsafe extern "C" fn(*mut Display, *mut xlib::XErrorEvent) -> c_int;
pub struct Xbase {
program_title: String,
x_display: *mut Display,
x_screen: c_int,
x_root: c_ulong,
screen_sizes: geom::Sizes,
x_error: Option<ErrorHandler>,
}
impl Xbase {
pub fn new(
program_title: String,
x_error_handler: ErrorHandler,
) -> Result<Self, Box<dyn std::error::Error>> {
unsafe {
if xlib::XSupportsLocale() == 0 {
@ -27,12 +35,46 @@ impl Xbase {
let x_screen = xlib::XDefaultScreen(x_display);
let x_root = xlib::XRootWindow(x_display, x_screen);
let screen_sizes = geom::Sizes::new(
xlib::XDisplayWidth(x_display, x_screen),
xlib::XDisplayHeight(x_display, x_screen),
);
let x_error = xlib::XSetErrorHandler(Some(x_error_wm_check));
// TODO: XSetErrorHandler
xlib::XSelectInput(
x_display,
xlib::XDefaultRootWindow(x_display),
xlib::SubstructureRedirectMask,
);
xlib::XSync(x_display, xlib::False);
xlib::XSetErrorHandler(Some(x_error_handler));
// TODO: XSetErrorHandler
xlib::XSync(x_display, xlib::False);
Ok(Self {
program_title,
x_display,
x_screen,
x_root,
screen_sizes,
x_error,
})
}
}
}
impl Drop for Xbase {
fn drop(&mut self) {
unsafe { xlib::XCloseDisplay(self.x_display) };
}
}
unsafe extern "C" fn x_error_wm_check(
_display: *mut Display,
_x_error_event: *mut xlib::XErrorEvent,
) -> c_int {
panic!("another window manager is already running");
}