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use ashpd::desktop::{
remote_desktop::{DeviceType, RemoteDesktop},
PersistMode,
};
use calloop::generic::Generic;
use once_cell::sync::Lazy;
use reis::{ei, PendingRequestResult};
use std::{collections::HashMap, io, os::unix::net::UnixStream};
use xkbcommon::xkb;
static INTERFACES: Lazy<HashMap<&'static str, u32>> = Lazy::new(|| {
let mut m = HashMap::new();
m.insert("ei_callback", 1);
m.insert("ei_connection", 1);
m.insert("ei_seat", 1);
m.insert("ei_device", 1);
m.insert("ei_pingpong", 1);
m.insert("ei_keyboard", 1);
m
});
#[derive(Debug, Default)]
struct SeatData {
name: Option<String>,
capabilities: HashMap<String, u64>,
}
#[derive(Default)]
struct DeviceData {
name: Option<String>,
device_type: Option<ei::device::DeviceType>,
interfaces: HashMap<String, reis::Object>,
}
impl DeviceData {
fn interface<T: reis::Interface>(&self) -> Option<T> {
self.interfaces.get(T::NAME)?.clone().downcast()
}
}
struct State {
// XXX best way to handle data associated with object?
seats: HashMap<ei::Seat, SeatData>,
// XXX association with seat?
devices: HashMap<ei::Device, DeviceData>,
running: bool,
sequence: u32,
last_serial: u32,
keymap: Option<xkb::Keymap>,
}
impl State {
fn handle_listener_readable(
&mut self,
context: &mut ei::Context,
) -> io::Result<calloop::PostAction> {
if let Err(_) = context.read() {
return Ok(calloop::PostAction::Remove);
}
while let Some(result) = context.pending_event() {
let request = match result {
PendingRequestResult::Request(request) => request,
PendingRequestResult::ParseError(msg) => {
todo!()
}
PendingRequestResult::InvalidObject(object_id) => {
// TODO
continue;
}
};
match request {
ei::Event::Handshake(handshake, request) => match request {
ei::handshake::Event::HandshakeVersion { version: _ } => {
handshake.handshake_version(1);
handshake.name("type-text-example");
handshake.context_type(ei::handshake::ContextType::Sender);
for (interface, version) in INTERFACES.iter() {
handshake.interface_version(interface, *version);
}
handshake.finish();
}
ei::handshake::Event::InterfaceVersion {
name: _,
version: _,
} => {}
ei::handshake::Event::Connection {
connection: _,
serial,
} => {
self.last_serial = serial;
}
_ => {}
},
ei::Event::Connection(connection, request) => match request {
ei::connection::Event::Seat { seat } => {
self.seats.insert(seat, Default::default());
}
ei::connection::Event::Ping { ping } => {
ping.done(0);
}
_ => {}
},
ei::Event::Seat(seat, request) => {
let data = self.seats.get_mut(&seat).unwrap();
match request {
ei::seat::Event::Name { name } => {
data.name = Some(name);
}
ei::seat::Event::Capability { mask, interface } => {
data.capabilities.insert(interface, mask);
}
ei::seat::Event::Done => {
seat.bind(*data.capabilities.get("ei_keyboard").unwrap());
// XXX
}
ei::seat::Event::Device { device } => {
self.devices.insert(device, Default::default());
}
_ => {}
}
}
ei::Event::Device(device, request) => {
let data = self.devices.get_mut(&device).unwrap();
match request {
ei::device::Event::Name { name } => {
data.name = Some(name);
}
ei::device::Event::DeviceType { device_type } => {
data.device_type = Some(device_type);
}
ei::device::Event::Interface { object } => {
data.interfaces
.insert(object.interface().to_string(), object);
}
ei::device::Event::Done => {
if let Some(keyboard) = data.interface::<ei::Keyboard>() {
device.start_emulating(self.sequence, self.last_serial);
self.sequence += 1;
let keymap = self.keymap.as_ref().unwrap();
let all_keycodes =
keymap.min_keycode().raw()..keymap.max_keycode().raw();
let shift_keycode = all_keycodes
.clone()
.find(|i| {
keymap
.key_get_syms_by_level(xkb::Keycode::new(*i), 0, 0)
.contains(&xkb::Keysym::Shift_L)
})
.unwrap();
let s = "Hello world!";
for c in s.chars() {
let keysym = xkb::Keysym::from_char(c);
let mut keycode = None;
let mut shift = false;
'outer: for i in all_keycodes.clone() {
for j in 0..=1 {
let syms = keymap.key_get_syms_by_level(
xkb::Keycode::new(i),
0,
j,
);
if syms.contains(&keysym) {
keycode = Some(i);
shift = j == 1;
break 'outer;
}
}
}
let keycode = keycode.unwrap();
if shift {
keyboard
.key(shift_keycode - 8, ei::keyboard::KeyState::Press);
}
keyboard.key(keycode - 8, ei::keyboard::KeyState::Press);
keyboard.key(keycode - 8, ei::keyboard::KeyState::Released);
if shift {
keyboard.key(
shift_keycode - 8,
ei::keyboard::KeyState::Released,
);
}
}
device.frame(self.last_serial, 1); // XXX time
device.stop_emulating(self.last_serial);
//self.running = false;
}
}
ei::device::Event::Resumed { serial } => {
self.last_serial = serial;
}
_ => {}
}
}
ei::Event::Keyboard(keyboard, request) => {
match request {
ei::keyboard::Event::Keymap {
keymap_type,
size,
keymap,
} => {
// XXX format
// flags?
// handle multiple keyboard?
let context = xkb::Context::new(0);
self.keymap = Some(
unsafe {
xkb::Keymap::new_from_fd(
&context,
keymap,
size as _,
xkb::KEYMAP_FORMAT_TEXT_V1,
0,
)
}
.unwrap()
.unwrap(),
);
}
_ => {}
}
}
_ => {}
}
}
context.flush();
Ok(calloop::PostAction::Continue)
}
}
async fn open_connection() -> ei::Context {
if let Some(context) = ei::Context::connect_to_env().unwrap() {
context
} else {
eprintln!("Unable to find ei socket. Trying xdg desktop portal.");
let remote_desktop = RemoteDesktop::new().await.unwrap();
let session = remote_desktop.create_session().await.unwrap();
remote_desktop
.select_devices(
&session,
DeviceType::Keyboard.into(),
None,
PersistMode::DoNot,
)
.await
.unwrap();
remote_desktop
.start(&session, &ashpd::WindowIdentifier::default())
.await
.unwrap();
let fd = remote_desktop.connect_to_eis(&session).await.unwrap();
let stream = UnixStream::from(fd);
ei::Context::new(stream).unwrap()
}
}
fn main() {
let mut event_loop = calloop::EventLoop::try_new().unwrap();
let handle = event_loop.handle();
let context = futures_executor::block_on(open_connection());
// XXX wait for server version?
let handshake = context.handshake();
context.flush();
let context_source = Generic::new(context, calloop::Interest::READ, calloop::Mode::Level);
handle
.insert_source(context_source, |_event, context, state: &mut State| {
state.handle_listener_readable(unsafe { context.get_mut() })
})
.unwrap();
let mut state = State {
seats: HashMap::new(),
devices: HashMap::new(),
running: true,
last_serial: u32::MAX,
sequence: 0,
keymap: None,
};
while state.running {
event_loop.dispatch(None, &mut state).unwrap();
}
}