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|
use Event as GlutinEvent;
use std::collections::{HashMap, VecDeque, HashSet};
use std::sync::{Arc, Mutex};
use libc::c_void;
use wayland_client::{EventIterator, Proxy, ProxyId};
use wayland_client::wayland::get_display;
use wayland_client::wayland::compositor::{WlCompositor, WlSurface};
use wayland_client::wayland::output::WlOutput;
use wayland_client::wayland::seat::{WlSeat, WlPointer};
use wayland_client::wayland::shell::WlShell;
use wayland_client::wayland::shm::WlShm;
use wayland_client::wayland::subcompositor::WlSubcompositor;
use super::wayland_kbd::MappedKeyboard;
use super::wayland_window::DecoratedSurface;
lazy_static! {
pub static ref WAYLAND_CONTEXT: Option<WaylandContext> = {
WaylandContext::init()
};
}
wayland_env!(InnerEnv,
compositor: WlCompositor,
seat: WlSeat,
shell: WlShell,
shm: WlShm,
subcompositor: WlSubcompositor
);
pub struct WaylandFocuses {
pub pointer: Option<WlPointer>,
pub pointer_on: Option<ProxyId>,
pub pointer_at: Option<(f64, f64)>,
pub keyboard: Option<MappedKeyboard>,
pub keyboard_on: Option<ProxyId>
}
pub struct WaylandContext {
inner: InnerEnv,
iterator: Mutex<EventIterator>,
monitors: Vec<WlOutput>,
queues: Mutex<HashMap<ProxyId, Arc<Mutex<VecDeque<GlutinEvent>>>>>,
known_surfaces: Mutex<HashSet<ProxyId>>,
focuses: Mutex<WaylandFocuses>
}
impl WaylandContext {
fn init() -> Option<WaylandContext> {
let display = match get_display() {
Some(display) => display,
None => return None
};
let (mut inner_env, iterator) = InnerEnv::init(display);
let monitors = inner_env.globals.iter()
.flat_map(|&(id, _, _)| inner_env.rebind_id::<WlOutput>(id))
.map(|(monitor, _)| monitor)
.collect();
inner_env.display.sync_roundtrip().unwrap();
Some(WaylandContext {
inner: inner_env,
iterator: Mutex::new(iterator),
monitors: monitors,
queues: Mutex::new(HashMap::new()),
known_surfaces: Mutex::new(HashSet::new()),
focuses: Mutex::new(WaylandFocuses {
pointer: None,
pointer_on: None,
pointer_at: None,
keyboard: None,
keyboard_on: None
})
})
}
pub fn new_surface(&self) -> Option<(WlSurface, Arc<Mutex<VecDeque<GlutinEvent>>>)> {
self.inner.compositor.as_ref().map(|c| {
let s = c.0.create_surface();
let id = s.id();
let queue = {
let mut q = VecDeque::new();
q.push_back(GlutinEvent::Refresh);
Arc::new(Mutex::new(q))
};
self.queues.lock().unwrap().insert(id, queue.clone());
self.known_surfaces.lock().unwrap().insert(id);
(s, queue)
})
}
pub fn dropped_surface(&self, id: ProxyId) {
self.queues.lock().unwrap().remove(&id);
self.known_surfaces.lock().unwrap().remove(&id);
}
pub fn decorated_from(&self, surface: &WlSurface, width: i32, height: i32) -> Option<DecoratedSurface> {
let inner = &self.inner;
match (&inner.compositor, &inner.subcompositor, &inner.shm, &inner.shell) {
(&Some(ref compositor), &Some(ref subcompositor), &Some(ref shm), &Some(ref shell)) => {
DecoratedSurface::new(
surface, width, height,
&compositor.0, &subcompositor.0, &shm.0, &shell.0,
self.inner.rebind::<WlSeat>().map(|(seat, _)| seat)
).ok()
}
_ => None
}
}
pub fn display_ptr(&self) -> *const c_void {
self.inner.display.ptr() as *const _
}
pub fn dispatch_events(&self) {
self.inner.display.dispatch_pending().unwrap();
let mut iterator = self.iterator.lock().unwrap();
let mut focuses = self.focuses.lock().unwrap();
let known_surfaces = self.known_surfaces.lock().unwrap();
let queues = self.queues.lock().unwrap();
// first, keyboard events
let kdb_evts = super::keyboard::translate_kbd_events(&mut *focuses, &known_surfaces);
for (evt, id) in kdb_evts {
if let Some(q) = queues.get(&id) {
q.lock().unwrap().push_back(evt);
}
}
// then, the rest
for evt in &mut *iterator {
if let Some((evt, id)) = super::events::translate_event(
evt, &mut *focuses, &known_surfaces,
self.inner.seat.as_ref().map(|s| &s.0))
{
if let Some(q) = queues.get(&id) {
q.lock().unwrap().push_back(evt);
}
}
}
}
pub fn flush_events(&self) -> ::std::io::Result<i32> {
self.inner.display.flush()
}
pub fn read_events(&self) -> ::std::io::Result<Option<i32>> {
let guard = match self.inner.display.prepare_read() {
Some(g) => g,
None => return Ok(None)
};
return guard.read_events().map(|i| Some(i));
}
}
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