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use wayland_client::{
protocol::{wl_buffer, wl_buffer, wl_compositor, wl_registry, wl_shm, wl_shm_pool},
Connection, ConnectionHandle, Dispatch, QueueHandle, WEnum,
};
// use wayland_protocols::unstable::xdg_output::v1::client::zxdg_output_manager_v1 as xdg_output_manager;
// use wayland_protocols::wlr::unstable::layer_shell::v1::client::zwlr_layer_shell_v1 as wlr_layer_shell;
use wayland_protocols::xdg_shell::client::xdg_wm_base;
use anyhow::Result;
use std::{
collections::HashMap,
os::unix::prelude::{AsRawFd, RawFd},
};
// use std::os::unix::io::AsRawFd;
// use std::sync::atomic::{AtomicU32, Ordering};
// use std::sync::Arc;
fn main() -> Result<()> {
let conn = Connection::connect_to_env()?;
let display = conn.handle().display();
let mut event_queue = conn.new_event_queue();
let qh = event_queue.handle();
let mut state = BarState::default();
display.get_registry(&mut conn.handle(), &qh, ())?;
conn.roundtrip()?;
event_queue.dispatch_pending(&mut state)?;
state.assert_init();
let mut b = Buffer::create(
&mut conn.handle(),
&qh,
state.wl_shm.as_ref().unwrap(),
400,
400,
)?;
for p in &*b.data {
*p = 100;
}
loop {
event_queue.blocking_dispatch(&mut state)?;
}
}
#[derive(Debug, Default)]
struct BarState {
wl_shm: Option<wl_shm::WlShm>,
wl_compositor: Option<wl_compositor::WlCompositor>,
xdg_wm_base: Option<xdg_wm_base::XdgWmBase>,
}
impl BarState {
fn assert_init(&self) {
assert!(
self.wl_shm.is_some() && self.wl_compositor.is_some() && self.xdg_wm_base.is_some()
);
}
}
impl Dispatch<wl_registry::WlRegistry> for BarState {
type UserData = ();
fn event(
&mut self,
registry: &wl_registry::WlRegistry,
event: wl_registry::Event,
_: &Self::UserData,
conn: &mut ConnectionHandle,
qh: &QueueHandle<BarState>,
) {
match event {
wl_registry::Event::Global {
name,
interface,
version,
} => match interface.as_str() {
"wl_shm" => {
self.wl_shm = Some(registry.bind(conn, name, version, qh, ()).unwrap());
}
"wl_compositor" => {
self.wl_compositor = Some(registry.bind(conn, name, version, qh, ()).unwrap());
}
"xdg_wm_base" => {
self.xdg_wm_base = Some(registry.bind(conn, name, version, qh, ()).unwrap());
}
_ => (),
},
wl_registry::Event::GlobalRemove { name } => {
eprintln!("Removed: {name}");
}
_ => (),
}
}
}
impl Dispatch<wl_shm::WlShm> for BarState {
type UserData = ();
fn event(
&mut self,
_: &wl_shm::WlShm,
_: wl_shm::Event,
_: &Self::UserData,
_: &mut ConnectionHandle,
_: &QueueHandle<Self>,
) {
}
}
impl Dispatch<wl_compositor::WlCompositor> for BarState {
type UserData = ();
fn event(
&mut self,
_: &wl_compositor::WlCompositor,
_: wl_compositor::Event,
_: &Self::UserData,
_: &mut ConnectionHandle,
_: &QueueHandle<Self>,
) {
}
}
impl Dispatch<xdg_wm_base::XdgWmBase> for BarState {
type UserData = ();
fn event(
&mut self,
xdg_wm_base: &xdg_wm_base::XdgWmBase,
e: xdg_wm_base::Event,
_: &Self::UserData,
conn: &mut ConnectionHandle,
_: &QueueHandle<Self>,
) {
if let xdg_wm_base::Event::Ping { serial } = e {
xdg_wm_base.pong(conn, serial);
}
}
}
impl Dispatch<wl_shm_pool::WlShmPool> for BarState {
type UserData = ();
fn event(
&mut self,
_: &wl_shm_pool::WlShmPool,
_: wl_shm_pool::Event,
_: &Self::UserData,
_: &mut ConnectionHandle,
_: &QueueHandle<Self>,
) {
}
}
impl Dispatch<wl_buffer::WlBuffer> for BarState {
type UserData = ();
fn event(
&mut self,
_: &wl_buffer::WlBuffer,
e: wl_buffer::Event,
_: &Self::UserData,
_: &mut ConnectionHandle,
_: &QueueHandle<Self>,
) {
if let wl_buffer::Event::Release = e {
todo!()
}
}
}
#[derive(Debug)]
struct Buffer {
width: u32,
height: u32,
data: memmap::MmapMut,
wl_buffer: wl_buffer::WlBuffer,
}
impl Buffer {
fn create(
conn: &mut ConnectionHandle,
qh: &QueueHandle<BarState>,
shm: &wl_shm::WlShm,
width: u32,
height: u32,
) -> Result<Self> {
let stride = width * 4;
let size = height * stride;
let (data, fd) = alloc_shm("buffer", size as u64)?;
let pool = shm.create_pool(conn, fd.as_raw_fd(), size as i32, qh, ())?;
let wl_buffer = pool.create_buffer(
conn,
0,
width as i32,
height as i32,
stride as i32,
wl_shm::Format::Argb8888,
qh,
(),
)?;
pool.destroy(conn);
Ok(Self {
width,
height,
data,
wl_buffer,
})
}
}
fn alloc_shm(name: &str, size: u64) -> Result<(memmap::MmapMut, impl AsRawFd)> {
let file = memfd::MemfdOptions::new().create(name)?;
file.as_file().set_len(size)?;
let mmap = unsafe { memmap::MmapMut::map_mut(file.as_file())? };
Ok((mmap, file))
}
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