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|
use atoms::InternedAtoms;
use clients::ClientState;
use colours::Colours;
use cursors::Cursors;
use error::*;
use keys::KeyboardInfo;
use xcb::{
x::{self, ChangeWindowAttributes, PropertyNotifyEvent, Window},
Connection, Event, Extension,
};
mod atoms;
mod clients;
mod colours;
mod cursors;
mod error;
mod focus;
mod keys;
fn main() -> Result<()> {
cleanup_process_children();
let (conn, screen_num) =
Connection::connect_with_extensions(None, &[], &[Extension::Xinerama])?;
let mut wm = WM::new(&conn, screen_num)?;
wm.event_loop()?;
Ok(())
}
/// The window manager's state
struct WM<'a> {
/// The open connection to an X server
conn: &'a Connection,
/// The 'screen' number on the X server
/// Note this isn't what you think it is on multi-monitor setups
screen_num: i32,
/// The root window
root: Window,
/// WM client state
clients: ClientState,
/// Cached colours,
colours: Colours,
/// Cached cursors
cursors: Cursors,
/// Cached atoms
atoms: InternedAtoms,
/// Cached keyboard layout information
keyboard_state: KeyboardInfo,
}
impl WM<'_> {
/// Prepare the window manager to run on the given connection and screen number.
/// This will fail if another WM is running.
fn new(conn: &'_ Connection, screen_num: i32) -> Result<WM<'_>> {
// Fetch root window
let setup = conn.get_setup();
let screen = setup
.roots()
.nth(screen_num as usize)
.ok_or(Error::NoSuchScreen)?;
// Check no other WM is running
conn.check_request(conn.send_request_checked(&ChangeWindowAttributes {
window: screen.root(),
value_list: &[
x::Cw::BackPixel(screen.white_pixel()),
x::Cw::EventMask(x::EventMask::SUBSTRUCTURE_REDIRECT),
],
}))
.map_err(|_| Error::OtherWMRunning)?;
Ok(WM {
colours: Colours::new_with(conn, screen.default_colormap())?,
atoms: InternedAtoms::new_with(conn)?,
cursors: Cursors::new_with(conn)?,
keyboard_state: KeyboardInfo::new_with(conn)?,
clients: Default::default(),
conn,
screen_num,
root: screen.root(),
})
}
/// Set the correct properties on the root window
fn setup_root(&mut self) -> Result<()> {
// TODO: Set EHWM properties on root window
self.conn
.check_request(self.conn.send_request_checked(&ChangeWindowAttributes {
window: self.root,
value_list: &[
x::Cw::EventMask(
x::EventMask::SUBSTRUCTURE_REDIRECT
| x::EventMask::SUBSTRUCTURE_NOTIFY
| x::EventMask::BUTTON_PRESS
| x::EventMask::ENTER_WINDOW
| x::EventMask::FOCUS_CHANGE
| x::EventMask::STRUCTURE_NOTIFY
| x::EventMask::PROPERTY_CHANGE,
),
x::Cw::Cursor(self.cursors.normal),
],
}))?;
self.grab_keys()?;
// TODO: reset focus
Ok(())
}
fn event_loop(&mut self) -> Result<()> {
// Perform setup
self.update_geometry()?;
self.setup_root()?;
loop {
match self.conn.wait_for_event()? {
// See keys.rs
Event::X(x::Event::KeyPress(e)) => self.handle_key_press(e)?,
Event::X(x::Event::MappingNotify(e)) => self.handle_mapping_notify(e)?,
// See clients.rs
Event::X(x::Event::ConfigureRequest(e)) => self.handle_configure_request(e)?,
Event::X(x::Event::ConfigureNotify(e)) => self.handle_configure_notify(e)?,
Event::X(x::Event::DestroyNotify(e)) => self.handle_destroy_notify(e)?,
Event::X(x::Event::MapRequest(e)) => self.handle_map_request(e)?,
Event::X(x::Event::UnmapNotify(e)) => self.handle_unmap_notify(e)?,
// See focus.rs
Event::X(x::Event::EnterNotify(e)) => self.handle_enter_notify(e)?,
Event::X(x::Event::FocusIn(e)) => self.handle_focus_in(e)?,
// See below
Event::X(x::Event::PropertyNotify(e)) => self.handle_property_notify(e)?,
_ => {}
};
}
}
/// Handle a property notify event, by doing *todo*
fn handle_property_notify(&self, _e: PropertyNotifyEvent) -> Result<()> {
println!("TODO: handle_property_notify");
Ok(())
}
}
/// Cleanup this process' children and set some flags.
/// This is necessary when used with `startx`
fn cleanup_process_children() {
// TODO: dont transform children into zombies when they terminate
// TODO: cleanup zombies
}
impl<'a> std::fmt::Debug for WM<'a> {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.debug_struct("WM")
.field("screen_num", &self.screen_num)
.field("root", &self.root)
.field("clients", &self.clients)
.field("atoms", &self.atoms)
.finish()
}
}
|
