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#![allow(clippy::collapsible_else_if)]
use std::io;
use std::os::fd::{AsRawFd, FromRawFd, IntoRawFd};
use std::os::unix::net::UnixStream;
use std::process::{Command, Stdio};
use super::*;
use crate::event_loop;
use crate::utils::read_to_vec;
pub struct MangoInfoProvider {
mmsg_sock: UnixStream,
mmsg_buf: Vec<u8>,
all_monitors: Vec<MangoMonitor>,
}
#[derive(serde::Deserialize, Debug, Clone)]
struct MangoTag {
index: u32,
is_active: bool,
is_urgent: bool,
client_count: u32,
}
#[derive(serde::Deserialize, Debug, Clone)]
struct MangoMonitor {
name: String,
active: bool,
tags: Vec<MangoTag>,
layout_symbol: String,
}
#[derive(serde::Deserialize, Debug)]
struct MangoIpc {
monitors: Vec<MangoMonitor>,
}
impl MangoInfoProvider {
pub fn new() -> Option<Self> {
let child = Command::new("/usr/bin/mmsg")
.arg("watch")
.arg("all-monitors")
.stdout(Stdio::piped())
.spawn().ok()?;
let stdout = child.stdout.expect("couldn't get stdout");
let sock = unsafe { UnixStream::from_raw_fd(stdout.into_raw_fd()) };
sock.set_nonblocking(true).ok()?;
Some(Self {
mmsg_sock: sock,
mmsg_buf: Vec::new(),
all_monitors: Vec::new(),
})
}
fn next_event(&mut self) -> io::Result<MangoIpc> {
loop {
if let Some(i) = memchr::memchr(b'\n', &self.mmsg_buf) {
let event = String::from_utf8_lossy(&self.mmsg_buf[..i]).into_owned();
self.mmsg_buf.drain(..=i);
return Ok(serde_json::from_str(&event)?);
}
if read_to_vec(&self.mmsg_sock, &mut self.mmsg_buf)? == 0 {
return Err(io::Error::new(
io::ErrorKind::BrokenPipe,
"mmsg child process disconnected",
));
}
}
}
}
impl WmInfoProvider for MangoInfoProvider {
fn register(&self, ev: &mut EventLoop) {
ev.register_with_fd(self.mmsg_sock.as_raw_fd(), |ctx| {
loop {
let mango = ctx.state.shared_state.get_mango().unwrap();
let mut layout_updated = false;
match mango.next_event() {
Ok(event) => {
if let Some(i) = event.monitors.iter().position(|m| m.active) {
if mango.all_monitors.get(i).map(|m| &m.layout_symbol) != event.monitors.get(i).map(|m| &m.layout_symbol) {
layout_updated = true;
}
}
mango.all_monitors = event.monitors;
}
Err(e) if e.kind() == io::ErrorKind::WouldBlock => break,
Err(e) => {
ctx.state.set_error(ctx.conn, "mango", e);
return Ok(event_loop::Action::Unregister);
}
}
ctx.state.tags_updated(ctx.conn, None);
if layout_updated {
ctx.state.layout_name_updated(ctx.conn, None);
}
}
Ok(event_loop::Action::Keep)
});
}
fn get_tags(&self, output: &Output) -> Vec<Tag> {
self.all_monitors
.iter()
.find(|c| c.name == output.name)
.map_or_default(
|monitor| {
monitor
.tags
.iter()
.enumerate()
.map(|(i, mango_tag)| Tag {
id: mango_tag.index,
name: (i + 1).to_string(),
is_focused: mango_tag.is_active,
is_active: mango_tag.client_count > 0,
is_urgent: mango_tag.is_urgent,
})
.collect()
},
)
}
// TODO
fn get_layout_name(&self, output: &Output) -> Option<String> {
// self.layout_symbol.clone()
self.all_monitors
.iter()
.find(|c| c.name == output.name)
.map_or_else(
|| {
eprintln!("Couldn't find layout_name for monitor {}", output.name);
None
},
|monitor| {
Some(monitor.layout_symbol.clone())
})
}
fn get_mode_name(&self, _: &Output) -> Option<String> {
None
}
fn click_on_tag(
&mut self,
conn: &mut Connection<State>,
_output: &Output,
_seat: WlSeat,
tag_id: Option<u32>,
_btn: PointerBtn,
) {
if let Some(id) = tag_id {
let _ = Command::new("/usr/bin/mmsg")
.arg("dispatch")
.arg(format!("view,{}", id))
.stdout(Stdio::piped())
.spawn();
}
}
}
|
