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extern crate libc;
extern crate x11;
pub mod safe_x11;
pub mod command;
pub mod dotwm;
pub mod event;
use dotwm::DotWM;
use command::{exec_cmd,collect_zombies};
use event::{Event,next_event};
use safe_x11::grab_key;
use std::ops::Deref;
use std::process;
use std::collections::HashMap;
use x11::xlib;
use x11::xlib::GrabModeAsync;
use x11::xlib::XEvent;
use x11::keysym;
/// Defines a callback to call no certains events.
pub type ExecFn = fn(&mut DotWM, XEvent, &[String]) -> bool;
/// Map for keys => functions
pub type BindingHash = HashMap<(u32, u32), (ExecFn, Vec<String>)>;
fn exec_func(wm: &mut DotWM, bindings: &mut BindingHash, key: u32, modifiers: u32, ev: xlib::XEvent) {
if let Some(&(func, ref args)) = bindings.get(&(key, modifiers)) {
let v = args.clone();
func(wm, ev, &v);
}
}
fn exec(_: &mut DotWM, _: xlib::XEvent, args: &[String]) -> bool {
if let Some(program) = args.first() {
let mut prog_args = vec![];
for arg in args[1..].iter() {
prog_args.push(arg);
}
exec_cmd(program, prog_args.deref()).unwrap();
}
true
}
fn move_win(wm: &mut DotWM, _: xlib::XEvent, args: &[String]) -> bool {
let x = args[0].parse::<i32>().unwrap();
let y = args[1].parse::<i32>().unwrap();
if let Some(ref win) = wm.current_window() {
win.move_offset(x, y);
};
true
}
fn resize_win(wm: &mut DotWM, _: xlib::XEvent, args: &[String]) -> bool {
let w = args[0].parse::<i32>().unwrap();
let h = args[1].parse::<i32>().unwrap();
if let Some(ref win) = wm.current_window() {
win.resize(w, h);
};
true
}
fn focus_next(wm: &mut DotWM, _: xlib::XEvent, _: &[String]) -> bool {
wm.focus_next();
true
}
fn quit_dotwm(_: &mut DotWM, _: xlib::XEvent, _: &[String]) -> bool {
process::exit(0);
}
/// Add a binding to the WM.
///
/// # Example
///
/// ```
/// fn quit_dotwm(_: &mut DotWM, _: xlib::XEvent, _: &[String]) -> bool {
/// process::exit(0);
/// }
///
/// // ...
///
/// add_binding(keysym::XK_Return, xlib::Mod4Mask, exec,
/// &["xterm"]);
/// ```
fn add_binding(wm: &mut DotWM, bindings: &mut BindingHash,
key: u32, modifiers: u32, func: ExecFn, args: &[&str]) {
grab_key(wm.display, key, modifiers, true, GrabModeAsync, GrabModeAsync);
let mut v = vec![];
for arg in args {
v.push(arg.to_string());
}
bindings.insert((key, modifiers), (func, v));
}
fn main() {
println!("Creating dotwm");
let mut dotwm = DotWM::new();
let mut bindings: BindingHash = HashMap::new();
add_binding(&mut dotwm,&mut bindings, keysym::XK_Return, xlib::Mod4Mask, exec,
&["xterm"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_p, xlib::Mod4Mask, exec,
&["dmenu_run"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_Tab, xlib::Mod4Mask, focus_next, &[]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_h, xlib::Mod4Mask, move_win, &["-10", "0"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_j, xlib::Mod4Mask, move_win, &["0", "10"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_k, xlib::Mod4Mask, move_win, &["0", "-10"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_l, xlib::Mod4Mask, move_win, &["10", "0"]);
// Resize
add_binding(&mut dotwm,&mut bindings, keysym::XK_h, xlib::Mod4Mask | xlib::ControlMask,
resize_win, &["-10", "0"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_j, xlib::Mod4Mask | xlib::ControlMask,
resize_win, &["0", "10"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_k, xlib::Mod4Mask | xlib::ControlMask,
resize_win, &["0", "-10"]);
add_binding(&mut dotwm,&mut bindings, keysym::XK_l, xlib::Mod4Mask | xlib::ControlMask,
resize_win, &["10", "0"]);
add_binding(&mut dotwm, &mut bindings, keysym::XK_q, xlib::Mod4Mask | xlib::ShiftMask, quit_dotwm, &[]);
// Main loop
loop {
let event = next_event(dotwm.display);
println!("Event {:?}", event);
match event {
Event::Key(mut e, true) => {
let keysym = unsafe { xlib::XLookupKeysym(&mut e, 0) as u32 };
let mask = e.state;
exec_func(&mut dotwm, &mut bindings, keysym, mask, xlib::XEvent::from(e));
},
Event::Map(e) => {
// If the window has override_redirect setted to true, this should not
// be handled by the wm.
let map_event = xlib::XMapEvent::from(e);
if map_event.override_redirect == 0 {
println!("Adding window");
dotwm.add_window(map_event.window);
} else {
println!("Map event 0 :(");
}
}
Event::Unmap(e) => {
dotwm.remove_window(e.window);
},
Event::Enter(e) => {
if let Some(idx) = dotwm.find_window(e.window) {
dotwm.change_focus_of(idx);
}
},
_ => (),
}
collect_zombies();
}
}
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