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edition = "2024"
|
||||
|
||||
[dependencies]
|
||||
libc = "0.2.177"
|
||||
memfile = "0.3.2"
|
||||
shared_memory = "0.12.4"
|
||||
wayland-client = "0.31"
|
||||
wayland-protocols = { version = "0.32.9", features = ["client"] }
|
||||
+313
@@ -0,0 +1,313 @@
|
||||
#![feature(more_qualified_paths)]
|
||||
use std::time::Duration;
|
||||
use std::{ffi::CString, thread::sleep};
|
||||
use std::os::fd::BorrowedFd;
|
||||
|
||||
use wayland_client::{
|
||||
Connection, Dispatch, EventQueue, Proxy, backend::ObjectId, delegate_noop, protocol::{
|
||||
wl_buffer::{self, WlBuffer},
|
||||
wl_compositor::{self, WlCompositor},
|
||||
wl_registry, wl_shell,
|
||||
wl_shm::{self, Format, WlShm},
|
||||
wl_shm_pool::{self, WlShmPool},
|
||||
wl_surface::{self, Event, WlSurface},
|
||||
}
|
||||
};
|
||||
|
||||
use libc::{O_CREAT, O_RDWR, PROT_READ, PROT_WRITE, S_IROTH, S_IRWXU, ftruncate, mmap, shm_open};
|
||||
|
||||
use wayland_protocols::xdg::{
|
||||
self,
|
||||
shell::client::{
|
||||
xdg_surface::{self, XdgSurface},
|
||||
xdg_toplevel::XdgToplevel,
|
||||
xdg_wm_base::{self, XdgWmBase},
|
||||
},
|
||||
};
|
||||
|
||||
const WIDTH: i32 = 960;
|
||||
const HEIGHT: i32 = 540;
|
||||
|
||||
#[derive(Debug)]
|
||||
struct State {
|
||||
exit: bool,
|
||||
ready: bool,
|
||||
compositor: Option<WlCompositor>,
|
||||
surface: Option<WlSurface>,
|
||||
shm: Option<WlShm>,
|
||||
formats: Vec<Format>,
|
||||
buffer: Option<WlBuffer>,
|
||||
wm_base: Option<XdgWmBase>,
|
||||
xdg_surface: Option<XdgSurface>,
|
||||
toplevel_surface: Option<XdgToplevel>,
|
||||
pool: Option<WlShmPool>,
|
||||
}
|
||||
|
||||
impl Dispatch<wl_registry::WlRegistry, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &wl_registry::WlRegistry,
|
||||
event: <wl_registry::WlRegistry as wayland_client::Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
// Iterate over the globals given by the registry.
|
||||
// Use the details from the global (name & version) to bind the proxy to the state
|
||||
// variable, specifying which global is beiong bound in the turbofish of proxy.bind()
|
||||
if let wl_registry::Event::Global {
|
||||
name,
|
||||
interface,
|
||||
version,
|
||||
} = event
|
||||
{
|
||||
match interface.as_str() {
|
||||
"wl_compositor" => {
|
||||
let compositor = proxy
|
||||
.bind::<wl_compositor::WlCompositor, _, _>(name, version, qhandle, *data);
|
||||
let surface = compositor.create_surface(qhandle, *data);
|
||||
state.compositor = Some(compositor);
|
||||
state.surface = Some(surface);
|
||||
}
|
||||
"wl_shm" => {
|
||||
let shm = proxy.bind::<wl_shm::WlShm, _, _>(name, version, qhandle, *data);
|
||||
state.shm = Some(shm);
|
||||
}
|
||||
"xdg_wm_base" => {
|
||||
let wm_base =
|
||||
proxy.bind::<xdg_wm_base::XdgWmBase, _, _>(name, version, qhandle, *data);
|
||||
state.wm_base = Some(wm_base);
|
||||
}
|
||||
_ => {
|
||||
// do nothing
|
||||
}
|
||||
};
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<WlShm, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &WlShm,
|
||||
event: <WlShm as wayland_client::Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
if let <WlShm as Proxy>::Event::Format { format } = event {
|
||||
if let None = state.pool {
|
||||
state.formats.push(
|
||||
format
|
||||
.into_result()
|
||||
.expect("Couldn't understand format, or it was unknown"),
|
||||
);
|
||||
// Any wayland client must support Xrgb8888 and Argb8888
|
||||
let channels: i32 = if state.formats.contains(&Format::Xrgb8888) {
|
||||
4
|
||||
} else {
|
||||
4
|
||||
}; // we know that the supported formats are only the two above, so we can safely assume that any format which is not Xrgb8888 is Argb8888, requiring 4 channels.
|
||||
// FIX: 3 channels won't work, even with Xrgb8888 for some reason
|
||||
// TODO: Update for more channels
|
||||
|
||||
let size: i32 = (WIDTH * HEIGHT * channels * 2).try_into().unwrap();
|
||||
let name = CString::new("/wolf_renderer_buffer").expect("CString::new() failed"); // CString::new can only fail if a null byte is in the string. This string should never cause errors
|
||||
|
||||
let shm_fd = unsafe {
|
||||
// SAFETY: We know that that at least a few megabytes of memory
|
||||
// should be able to be allocated for the virtual buffer.
|
||||
// Data races should not be possible as the compositor will
|
||||
// not modify the buffer. (Non owners do not have write
|
||||
// permissions)
|
||||
|
||||
let fildes = shm_open(name.as_ptr(), O_RDWR | O_CREAT, S_IRWXU | S_IROTH);
|
||||
if fildes <= 0 {
|
||||
panic!("Could not open SHM object. Error code: N/A") // TODO: implement errno reading
|
||||
};
|
||||
ftruncate(fildes, size.into());
|
||||
BorrowedFd::borrow_raw(fildes)
|
||||
};
|
||||
|
||||
let shm_pool = proxy.create_pool(shm_fd, size.try_into().unwrap(), qhandle, *data);
|
||||
// TODO: Move drawing logic to event loop (double flush)
|
||||
state.pool = Some(shm_pool);
|
||||
};
|
||||
} else {
|
||||
unimplemented!()
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<WlBuffer, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &WlBuffer,
|
||||
event: <WlBuffer as Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<XdgWmBase, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &XdgWmBase,
|
||||
event: <XdgWmBase as Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
if let xdg_wm_base::Event::Ping { serial } = event {
|
||||
state.wm_base.as_ref().unwrap().pong(serial); // Ok to unwrap as a ping won't be recieved until
|
||||
// all the globals are bound (including xdg_wm_base)
|
||||
// TODO: figure out as_ref
|
||||
} else {
|
||||
unreachable!();
|
||||
};
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<XdgSurface, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &XdgSurface,
|
||||
event: <XdgSurface as Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
if let <XdgSurface as Proxy>::Event::Configure { serial } = event {
|
||||
proxy.ack_configure(serial);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<XdgToplevel, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &XdgToplevel,
|
||||
event: <XdgToplevel as Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
if let <XdgToplevel as Proxy>::Event::Configure {
|
||||
width,
|
||||
height,
|
||||
states,
|
||||
} = event
|
||||
{
|
||||
// state.xdg_surface.unwrap().ack_configure(serial);
|
||||
// FIX: Figure out what serial I need for ack_configure with a toplevel
|
||||
// xdg_surface
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Dispatch<WlSurface, ()> for State {
|
||||
fn event(
|
||||
state: &mut Self,
|
||||
proxy: &WlSurface,
|
||||
event: <WlSurface as Proxy>::Event,
|
||||
data: &(),
|
||||
conn: &Connection,
|
||||
qhandle: &wayland_client::QueueHandle<Self>,
|
||||
) {
|
||||
}
|
||||
}
|
||||
delegate_noop!(State: wl_shm_pool::WlShmPool);
|
||||
delegate_noop!(State: wl_compositor::WlCompositor);
|
||||
|
||||
fn main() {
|
||||
let Ok(conn) = Connection::connect_to_env() else {
|
||||
panic!("Couldn't connect to Wayland environment");
|
||||
};
|
||||
|
||||
let mut state = State {
|
||||
exit: false,
|
||||
ready: false,
|
||||
compositor: None,
|
||||
surface: None,
|
||||
shm: None,
|
||||
formats: vec![],
|
||||
buffer: None,
|
||||
wm_base: None,
|
||||
xdg_surface: None,
|
||||
toplevel_surface: None,
|
||||
pool: None,
|
||||
};
|
||||
|
||||
let mut event_queue: EventQueue<State> = conn.new_event_queue();
|
||||
|
||||
let display = conn.display();
|
||||
let qh = &event_queue.handle();
|
||||
|
||||
display.get_registry(&qh, ());
|
||||
while !state.exit {
|
||||
event_queue.roundtrip(&mut state).unwrap();
|
||||
event_queue.flush().expect("hopefully flushed"); // TODO: expect
|
||||
// Assign roles to the surface as required, then attach the buffer, damage and commit
|
||||
if let None = &state.toplevel_surface {
|
||||
if let (Some(base), Some(surface), Some(buffer)) =
|
||||
(&state.wm_base, &state.surface, &state.buffer)
|
||||
{
|
||||
// Buffer is required because it is to be attached to the surface.
|
||||
let xdg_surface = base.get_xdg_surface(surface, qh, ()); // HACK: udata =/ ()
|
||||
let toplevel_surface = xdg_surface.get_toplevel(qh, ()); // HACK: udata =/ ()
|
||||
|
||||
state.xdg_surface = Some(xdg_surface);
|
||||
state.toplevel_surface = Some(toplevel_surface);
|
||||
|
||||
surface.attach(Some(buffer), 0, 0);
|
||||
surface.damage(0, 0, WIDTH, HEIGHT);
|
||||
surface.commit();
|
||||
};
|
||||
}
|
||||
state.ready = if let (Some(_), Some(_), Some(_), Some(_), Some(_)) = (
|
||||
&state.compositor,
|
||||
&state.surface,
|
||||
&state.shm,
|
||||
&state.buffer,
|
||||
&state.wm_base,
|
||||
) {
|
||||
true
|
||||
} else {
|
||||
false
|
||||
};
|
||||
|
||||
if let Some(shm_pool) = &state.pool {
|
||||
let channels: i32 = if state.formats.contains(&Format::Xrgb8888) {
|
||||
4
|
||||
} else {
|
||||
4
|
||||
}; // we know that the supported formats are only the two above, so we can safely assume that any format which is not Xrgb8888 is Argb8888, requiring 4 channels.
|
||||
// FIX: 3 channels won't work, even with Xrgb8888 for some reason
|
||||
// TODO: Update for more channels
|
||||
|
||||
let size: i32 = (WIDTH * HEIGHT * channels * 2).try_into().unwrap();
|
||||
let buffer = shm_pool.create_buffer(
|
||||
0,
|
||||
WIDTH.try_into().unwrap(),
|
||||
HEIGHT.try_into().unwrap(),
|
||||
(WIDTH * channels).try_into().unwrap(),
|
||||
if state.formats.contains(&Format::Xrgb8888) {
|
||||
Format::Xrgb8888
|
||||
} else {
|
||||
Format::Argb8888
|
||||
},
|
||||
qh,
|
||||
(),
|
||||
);
|
||||
state.buffer = Some(buffer.clone());
|
||||
}
|
||||
|
||||
if state.ready {
|
||||
dbg!("ready");
|
||||
sleep(Duration::from_secs(2));
|
||||
return;
|
||||
};
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user