1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
//! A lightweight X11 window manager, inspired by dwm.
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 config;
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
self.unfocus();
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()
}
}
|
