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GNU GENERAL PUBLIC LICENSE
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"flake-parts": {
"inputs": {
"nixpkgs-lib": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1772408722,
"narHash": "sha256-rHuJtdcOjK7rAHpHphUb1iCvgkU3GpfvicLMwwnfMT0=",
"owner": "hercules-ci",
"repo": "flake-parts",
"rev": "f20dc5d9b8027381c474144ecabc9034d6a839a3",
"type": "github"
},
"original": {
"owner": "hercules-ci",
"repo": "flake-parts",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1772542754,
"narHash": "sha256-WGV2hy+VIeQsYXpsLjdr4GvHv5eECMISX1zKLTedhdg=",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "8c809a146a140c5c8806f13399592dbcb1bb5dc4",
"type": "github"
},
"original": {
"owner": "NixOS",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"flake-parts": "flake-parts",
"nixpkgs": "nixpkgs"
}
}
},
"root": "root",
"version": 7
}

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{
inputs = {
nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
flake-parts.url = "github:hercules-ci/flake-parts";
flake-parts.inputs.nixpkgs-lib.follows = "nixpkgs";
};
outputs =
inputs@{ flake-parts, ... }:
flake-parts.lib.mkFlake { inherit inputs; } {
systems = [
"x86_64-linux"
"aarch64-linux"
];
perSystem =
{ pkgs, ... }:
let
in
{
devShells.default = pkgs.mkShell {
buildInputs = with pkgs; [
cargo
rustc
rust-analyzer
clippy
];
env = {};
};
};
flake = {
};
};
}

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use std::{
os::fd::{AsRawFd, OwnedFd},
rc::Rc,
};
use wl_proxy::{
object::ObjectCoreApi,
protocols::wayland::{wl_buffer::WlBuffer, wl_shm::WlShmFormat, wl_shm_pool::WlShmPool},
};
/// A simple ShmPool implementation backed by a growing memfd
pub struct SimpleBufferPool {
fd: Rc<OwnedFd>,
map: memmap2::MmapMut,
pool: Rc<WlShmPool>,
size: i32,
}
impl SimpleBufferPool {
pub fn new(
globals: &Rc<crate::globals::Globals>,
width: i32,
height: i32,
) -> eyre::Result<SimpleBufferPool> {
let size = width * height * 4;
let fd: OwnedFd = uapi::memfd_create(c"wl-backdrop", uapi::c::MFD_ALLOW_SEALING)?.into();
uapi::fcntl_add_seals(fd.as_raw_fd(), uapi::c::F_SEAL_SHRINK)?;
uapi::ftruncate(fd.as_raw_fd(), size as i64)?;
let fd = Rc::new(fd);
let pool = globals.wl_shm.new_send_create_pool(&fd, size);
pool.set_forward_to_client(false);
let map = unsafe { memmap2::MmapOptions::default().map_mut(&fd) }?;
Ok(SimpleBufferPool {
fd,
map,
pool,
size,
})
}
pub fn buffer(
&mut self,
width: i32,
height: i32,
) -> eyre::Result<(Rc<WlBuffer>, &mut memmap2::MmapMut)> {
let size = width * height * 4;
if size > self.size {
uapi::ftruncate(self.fd.as_raw_fd(), size as i64)?;
self.pool.send_resize(size);
unsafe {
self.map
.remap(size as usize, memmap2::RemapOptions::new().may_move(true))?
};
self.size = size;
}
let buf =
self.pool
.new_send_create_buffer(0, width, height, width * 4, WlShmFormat::ARGB8888);
buf.set_forward_to_client(false);
Ok((buf, &mut self.map))
}
}

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use std::{cell::RefCell, rc::Rc};
use wl_proxy::{
object::ObjectCoreApi,
protocols::wayland::{wl_buffer::WlBuffer, wl_subsurface::WlSubsurface, wl_surface::WlSurface},
};
use crate::{buffer::SimpleBufferPool, globals::Globals, util::Bounds};
pub struct Deco {
bounds: RefCell<Bounds>,
top_size: i32,
border_size: i32,
wl_surface: Rc<WlSurface>,
subsurface: Rc<WlSubsurface>,
pool: RefCell<SimpleBufferPool>,
globals: Rc<Globals>,
}
impl Deco {
pub fn new(host_surface: &Rc<WlSurface>, globals: &Rc<Globals>) -> Deco {
let wl_surface = globals.wl_compositor.new_send_create_surface();
wl_surface.set_forward_to_client(false);
let subsurface = globals
.wl_subcompositor
.new_send_get_subsurface(&wl_surface, host_surface);
subsurface.set_forward_to_client(false);
subsurface.send_place_below(&host_surface);
let pool = SimpleBufferPool::new(globals, 1, 1).unwrap();
Deco {
bounds: RefCell::new(Bounds {
x: 0,
y: 0,
width: 10,
height: 10,
}),
top_size: 24,
border_size: 8,
wl_surface,
subsurface,
pool: RefCell::new(pool),
globals: globals.clone(),
}
}
pub fn handle_window_geometry(
&self,
x: i32,
y: i32,
width: i32,
height: i32,
) -> eyre::Result<(i32, i32, i32, i32)> {
self.bounds.replace(Bounds {
x,
y,
width,
height,
});
self.draw()?;
let width = width + self.border_size * 2;
let height = height + self.top_size + self.border_size;
Ok((x - self.border_size, y - self.top_size, width, height))
}
pub fn transform_configure(&self, width: i32, height: i32) -> (i32, i32) {
(
width - self.border_size * 2,
height - self.top_size - self.border_size,
)
}
fn draw(&self) -> eyre::Result<Rc<WlBuffer>> {
let bounds = self.bounds.borrow();
let width = bounds.width + 2 * self.border_size;
let height = bounds.height + self.top_size + self.border_size;
log::info!("{:?} -> {}x{}", bounds, width, height);
let mut pool = self.pool.borrow_mut();
let (buf, map) = pool.buffer(width, height)?;
for y in 0..height {
for x in 0..width * 4 {
map[(y * (width * 4) + x) as usize] = 0xaf;
}
}
self.wl_surface.send_attach(Some(&buf), 0, 0);
self.wl_surface.send_damage_buffer(0, 0, width, height);
let input_region = self.globals.wl_compositor.new_send_create_region();
input_region.set_forward_to_client(false);
self.wl_surface.send_set_input_region(Some(&input_region));
self.subsurface
.send_set_position(bounds.x - self.border_size, bounds.y - self.top_size);
self.wl_surface.send_commit();
// let _ = self.globals.wl_display.new_send_sync();
Ok(buf)
}
}

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use std::{mem, rc::Rc};
use wl_proxy::{
object::{ConcreteObject, Object, ObjectCoreApi, ObjectUtils},
protocols::ObjectInterface,
};
pub use wl_proxy::protocols::{
cursor_shape_v1::wp_cursor_shape_manager_v1::WpCursorShapeManagerV1,
fractional_scale_v1::wp_fractional_scale_manager_v1::WpFractionalScaleManagerV1,
viewporter::wp_viewporter::WpViewporter,
wayland::{
wl_callback::{WlCallback, WlCallbackHandler},
wl_compositor::WlCompositor,
wl_display::WlDisplay,
wl_display::WlDisplayHandler,
wl_registry::{WlRegistry, WlRegistryHandler},
wl_shm::WlShm,
wl_subcompositor::WlSubcompositor,
},
xdg_shell::xdg_wm_base::XdgWmBase,
};
pub struct Globals {
pub wl_display: Rc<WlDisplay>,
pub wl_compositor: Rc<WlCompositor>,
pub wl_shm: Rc<WlShm>,
pub wl_subcompositor: Rc<WlSubcompositor>,
pub wp_viewporter: Rc<WpViewporter>,
pub wp_cursor_shape_manager_v1: Option<Rc<WpCursorShapeManagerV1>>,
pub wp_fractional_scale_manager_v1: Option<Rc<WpFractionalScaleManagerV1>>,
pub xdg_wm_base: Rc<XdgWmBase>,
}
struct ProxyWlRegistry {
wl_display: Rc<WlDisplay>,
}
impl WlRegistryHandler for ProxyWlRegistry {
fn handle_global(
&mut self,
slf: &Rc<WlRegistry>,
name: u32,
interface: ObjectInterface,
version: u32,
) {
let display = &mut *self.wl_display.get_handler_mut::<ClientWlDisplay>();
macro_rules! bind {
($field:ident, $ty:ty, $min:expr) => {{
let proxy = slf.state().create_object::<$ty>(version.min($min));
proxy.set_forward_to_client(false);
slf.send_bind(name, proxy.clone());
display.$field = Some(proxy);
}};
}
match interface {
WlCompositor::INTERFACE => bind!(wl_compositor, WlCompositor, 6),
WlShm::INTERFACE => bind!(wl_shm, WlShm, 2),
WlSubcompositor::INTERFACE => bind!(wl_subcompositor, WlSubcompositor, 1),
WpViewporter::INTERFACE => bind!(wp_viewporter, WpViewporter, 1),
WpCursorShapeManagerV1::INTERFACE => {
bind!(wp_cursor_shape_manager_v1, WpCursorShapeManagerV1, 1)
}
WpFractionalScaleManagerV1::INTERFACE => {
bind!(
wp_fractional_scale_manager_v1,
WpFractionalScaleManagerV1,
1
)
}
XdgWmBase::INTERFACE => bind!(xdg_wm_base, XdgWmBase, 7),
_ => {}
}
}
}
/// Handler used for the initial, proxy-created wl_callback.
struct ProxyFirstSyncHandler {
wl_display: Rc<WlDisplay>,
wl_registry: Rc<WlRegistry>,
}
impl WlCallbackHandler for ProxyFirstSyncHandler {
fn handle_done(&mut self, slf: &Rc<WlCallback>, _callback_data: u32) {
slf.unset_handler();
let display = &mut *self.wl_display.get_handler_mut::<ClientWlDisplay>();
macro_rules! expect {
($field:ident) => {
let $field = match display.$field.clone() {
Some(f) => f,
_ => {
eprintln!("Server does not support {}", stringify!($field));
std::process::exit(1);
}
};
};
}
expect!(wl_compositor);
expect!(wl_shm);
expect!(wl_subcompositor);
expect!(wp_viewporter);
expect!(xdg_wm_base);
// xdg_wm_base.set_handler(ProxyXdgWmBase);
let globals = Rc::new(Globals {
wl_display: self.wl_display.clone(),
wl_compositor,
wl_shm,
wl_subcompositor,
wp_viewporter,
wp_cursor_shape_manager_v1: display.wp_cursor_shape_manager_v1.clone(),
wp_fractional_scale_manager_v1: display.wp_fractional_scale_manager_v1.clone(),
xdg_wm_base,
});
for wl_registry in mem::take(&mut display.client_registries_without_handlers) {
wl_registry.set_handler(crate::ClientWlRegistry::new(&globals));
}
display.globals = Some(globals);
}
}
#[derive(Default)]
pub struct ClientWlDisplay {
/// The proxy-created wl_registry object.
registry: Option<Rc<WlRegistry>>,
/// The wl_registry objects created by the client before our initial roundtrip has
/// completed and we don't yet have a Globals object needed to set the handler.
client_registries_without_handlers: Vec<Rc<WlRegistry>>,
/// The globals object created after our initial roundtrip.
globals: Option<Rc<Globals>>,
wl_compositor: Option<Rc<WlCompositor>>,
wl_shm: Option<Rc<WlShm>>,
wl_subcompositor: Option<Rc<WlSubcompositor>>,
wp_viewporter: Option<Rc<WpViewporter>>,
wp_cursor_shape_manager_v1: Option<Rc<WpCursorShapeManagerV1>>,
xdg_wm_base: Option<Rc<XdgWmBase>>,
wp_fractional_scale_manager_v1: Option<Rc<WpFractionalScaleManagerV1>>,
}
impl ClientWlDisplay {
pub fn new() -> Self {
Default::default()
}
}
impl WlDisplayHandler for ClientWlDisplay {
fn handle_get_registry(&mut self, slf: &Rc<WlDisplay>, registry: &Rc<WlRegistry>) {
if self.registry.is_none() {
let wl_registry = slf.new_send_get_registry();
wl_registry.set_handler(ProxyWlRegistry {
wl_display: slf.clone(),
});
let sync = slf.new_send_sync();
sync.set_handler(ProxyFirstSyncHandler {
wl_display: slf.clone(),
wl_registry: wl_registry.clone(),
});
self.registry = Some(wl_registry);
}
slf.send_get_registry(registry);
if let Some(globals) = &self.globals {
registry.set_handler(crate::ClientWlRegistry::new(globals));
} else {
self.client_registries_without_handlers
.push(registry.clone());
}
}
}

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use std::{process::Command, rc::Rc};
use wl_proxy::{
baseline::Baseline,
object::{ConcreteObject, Object, ObjectCoreApi, ObjectRcUtils},
protocols::{
wayland::wl_registry::{WlRegistry, WlRegistryHandler},
xdg_shell::xdg_wm_base::XdgWmBase,
},
simple::{SimpleCommandExt, SimpleProxy},
};
use crate::globals::Globals;
mod buffer;
mod deco;
mod globals;
mod util;
mod xdg;
struct ClientWlRegistry {
globals: Rc<Globals>,
}
impl ClientWlRegistry {
fn new(globals: &Rc<Globals>) -> Self {
Self {
globals: globals.clone(),
}
}
}
impl WlRegistryHandler for ClientWlRegistry {
fn handle_bind(&mut self, slf: &Rc<WlRegistry>, name: u32, id: Rc<dyn Object>) {
match id.interface() {
XdgWmBase::INTERFACE => id
.downcast::<XdgWmBase>()
.set_handler(xdg::ClientXdgWmBase {
globals: self.globals.clone(),
}),
_ => {}
}
slf.send_bind(name, id);
}
}
fn main() -> eyre::Result<()> {
env_logger::builder().parse_default_env().init();
let server = SimpleProxy::new(Baseline::V2)?;
Command::new("gtk4-demo")
.with_wayland_display(server.display())
.spawn_and_forward_exit_code()?;
Err(server.run(|| globals::ClientWlDisplay::new()).into())
}

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#[derive(Default, Debug, Clone)]
pub struct Bounds {
pub x: i32,
pub y: i32,
pub width: i32,
pub height: i32,
}

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use std::rc::Rc;
use wl_proxy::protocols::{
wayland::{wl_output::WlOutput, wl_surface::WlSurface},
xdg_shell::{
xdg_popup::XdgPopup,
xdg_positioner::XdgPositioner,
xdg_surface::{XdgSurface, XdgSurfaceHandler},
xdg_toplevel::{XdgToplevel, XdgToplevelHandler, XdgToplevelState},
xdg_wm_base::{XdgWmBase, XdgWmBaseHandler},
},
};
use crate::{deco::Deco, globals::Globals};
pub struct ClientXdgWmBase {
pub globals: Rc<Globals>,
}
impl XdgWmBaseHandler for ClientXdgWmBase {
fn handle_get_xdg_surface(
&mut self,
slf: &Rc<XdgWmBase>,
id: &Rc<XdgSurface>,
surface: &Rc<WlSurface>,
) {
id.set_handler(ClientXdgSurface {
deco: Rc::new(Deco::new(surface, &self.globals)),
});
slf.send_get_xdg_surface(id, surface);
}
}
struct ClientXdgSurface {
deco: Rc<Deco>,
}
impl XdgSurfaceHandler for ClientXdgSurface {
fn handle_get_toplevel(&mut self, slf: &Rc<XdgSurface>, id: &Rc<XdgToplevel>) {
id.set_handler(ClientXdgToplevel::new(&self.deco));
slf.send_get_toplevel(id);
}
fn handle_get_popup(
&mut self,
slf: &Rc<XdgSurface>,
id: &Rc<XdgPopup>,
parent: Option<&Rc<XdgSurface>>,
positioner: &Rc<XdgPositioner>,
) {
// if let Some(parent) = parent {
// let handler = parent.get_handler_ref::<ClientXdgSurface>();
// self.deco.subsurface.send_place_below(&handler.wl_surface);
// } welp sad
slf.send_get_popup(id, parent, positioner);
}
fn handle_set_window_geometry(
&mut self,
slf: &Rc<XdgSurface>,
x: i32,
y: i32,
width: i32,
height: i32,
) {
let (x, y, width, height) = self
.deco
.handle_window_geometry(x, y, width, height)
.unwrap();
slf.send_set_window_geometry(x, y, width, height);
}
fn handle_ack_configure(&mut self, slf: &Rc<XdgSurface>, serial: u32) {
slf.send_ack_configure(serial);
}
fn handle_configure(&mut self, slf: &Rc<XdgSurface>, serial: u32) {
slf.send_configure(serial);
}
}
struct ClientXdgToplevel {
deco: Rc<Deco>,
}
impl ClientXdgToplevel {
fn new(deco: &Rc<Deco>) -> ClientXdgToplevel {
ClientXdgToplevel { deco: deco.clone() }
}
}
impl XdgToplevelHandler for ClientXdgToplevel {
fn handle_set_title(&mut self, slf: &Rc<XdgToplevel>, title: &str) {
slf.send_set_title(title);
}
fn handle_set_max_size(&mut self, slf: &Rc<XdgToplevel>, width: i32, height: i32) {
slf.send_set_max_size(width, height);
}
fn handle_set_min_size(&mut self, slf: &Rc<XdgToplevel>, width: i32, height: i32) {
slf.send_set_min_size(width, height);
}
fn handle_set_maximized(&mut self, slf: &Rc<XdgToplevel>) {
slf.send_set_maximized();
}
fn handle_unset_maximized(&mut self, slf: &Rc<XdgToplevel>) {
slf.send_unset_maximized();
}
fn handle_set_fullscreen(&mut self, slf: &Rc<XdgToplevel>, output: Option<&Rc<WlOutput>>) {
slf.send_set_fullscreen(output);
}
fn handle_unset_fullscreen(&mut self, slf: &Rc<XdgToplevel>) {
slf.send_unset_fullscreen();
}
fn handle_configure(&mut self, slf: &Rc<XdgToplevel>, width: i32, height: i32, _states: &[u8]) {
let states = (1u64 << 32 | XdgToplevelState::TILED_TOP.0 as u64).to_ne_bytes();
let (width, height) = self.deco.transform_configure(width, height);
slf.send_configure(width, height, &states[..]);
}
fn handle_configure_bounds(&mut self, slf: &Rc<XdgToplevel>, width: i32, height: i32) {
slf.send_configure_bounds(width, height);
}
}