smithay/examples/winit.rs

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#[macro_use]
extern crate glium;
extern crate rand;
#[macro_use]
extern crate slog;
extern crate slog_async;
extern crate slog_term;
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#[macro_use(define_roles)]
extern crate smithay;
extern crate wayland_server;
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mod helpers;
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use glium::Surface;
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use helpers::{init_shell, GliumDrawer, MyWindowMap};
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use slog::{Drain, Logger};
use smithay::backend::graphics::egl::EGLGraphicsBackend;
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use smithay::backend::input::{self, Event, InputBackend, InputHandler, KeyboardKeyEvent, PointerButtonEvent,
PointerMotionAbsoluteEvent};
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use smithay::backend::winit;
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use smithay::compositor::{SubsurfaceRole, TraversalAction};
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use smithay::compositor::roles::Role;
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use smithay::seat::{KeyboardHandle, PointerHandle, Seat};
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use smithay::shm::init_shm_global;
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use std::cell::RefCell;
use std::rc::Rc;
use wayland_server::protocol::wl_pointer;
struct WinitInputHandler {
log: Logger,
pointer: PointerHandle,
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keyboard: KeyboardHandle,
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window_map: Rc<RefCell<MyWindowMap>>,
pointer_location: (f64, f64),
serial: u32,
}
impl WinitInputHandler {
fn next_serial(&mut self) -> u32 {
self.serial += 1;
self.serial
}
}
impl InputHandler<winit::WinitInputBackend> for WinitInputHandler {
fn on_seat_created(&mut self, _: &input::Seat) {
/* never happens with winit */
}
fn on_seat_destroyed(&mut self, _: &input::Seat) {
/* never happens with winit */
}
fn on_seat_changed(&mut self, _: &input::Seat) {
/* never happens with winit */
}
fn on_keyboard_key(&mut self, _: &input::Seat, evt: winit::WinitKeyboardInputEvent) {
let keycode = evt.key_code() - 8;
let state = evt.state();
debug!(self.log, "key"; "keycode" => keycode, "state" => format!("{:?}", state));
let serial = self.next_serial();
self.keyboard.input(keycode, state, serial, |_, _| true);
}
fn on_pointer_move(&mut self, _: &input::Seat, _: input::UnusedEvent) {
/* never happens with winit */
}
fn on_pointer_move_absolute(&mut self, _: &input::Seat, evt: winit::WinitMouseMovedEvent) {
// on winit, mouse events are already in pixel coordinates
let (x, y) = evt.position();
self.pointer_location = (x, y);
let serial = self.next_serial();
let under = self.window_map.borrow().get_surface_under((x, y));
self.pointer.motion(
under.as_ref().map(|&(ref s, (x, y))| (s, x, y)),
serial,
evt.time(),
);
}
fn on_pointer_button(&mut self, _: &input::Seat, evt: winit::WinitMouseInputEvent) {
let serial = self.next_serial();
let button = match evt.button() {
input::MouseButton::Left => 0x110,
input::MouseButton::Right => 0x111,
input::MouseButton::Middle => 0x112,
input::MouseButton::Other(b) => b as u32,
};
let state = match evt.state() {
input::MouseButtonState::Pressed => {
// change the keyboard focus
let under = self.window_map
.borrow_mut()
.get_surface_and_bring_to_top(self.pointer_location);
self.keyboard
.set_focus(under.as_ref().map(|&(ref s, _)| s), serial);
wl_pointer::ButtonState::Pressed
}
input::MouseButtonState::Released => wl_pointer::ButtonState::Released,
};
self.pointer.button(button, state, serial, evt.time());
}
fn on_pointer_axis(&mut self, _: &input::Seat, _: winit::WinitMouseWheelEvent) {
/* not done in this example */
}
fn on_touch_down(&mut self, _: &input::Seat, _: winit::WinitTouchStartedEvent) {
/* not done in this example */
}
fn on_touch_motion(&mut self, _: &input::Seat, _: winit::WinitTouchMovedEvent) {
/* not done in this example */
}
fn on_touch_up(&mut self, _: &input::Seat, _: winit::WinitTouchEndedEvent) {
/* not done in this example */
}
fn on_touch_cancel(&mut self, _: &input::Seat, _: winit::WinitTouchCancelledEvent) {
/* not done in this example */
}
fn on_touch_frame(&mut self, _: &input::Seat, _: input::UnusedEvent) {
/* never happens with winit */
}
fn on_input_config_changed(&mut self, _: &mut ()) {
/* never happens with winit */
}
}
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fn main() {
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// A logger facility, here we use the terminal for this example
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let log = Logger::root(
slog_async::Async::default(slog_term::term_full().fuse()).fuse(),
o!(),
);
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// Initialize a simple backend for testing
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let (renderer, mut input) = winit::init(log.clone()).unwrap();
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let (mut display, mut event_loop) = wayland_server::create_display();
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/*
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* Initialize the globals
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*/
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init_shm_global(&mut event_loop, vec![], log.clone());
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let (compositor_token, _shell_state_token, window_map) = init_shell(&mut event_loop, log.clone());
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let (seat_token, _) = Seat::new(&mut event_loop, "winit".into(), log.clone());
let pointer = event_loop.state().get_mut(&seat_token).add_pointer();
let keyboard = event_loop
.state()
.get_mut(&seat_token)
.add_keyboard("", "fr", "oss", None, 1000, 500)
.expect("Failed to initialize the keyboard");
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/*
* Initialize glium
*/
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let drawer = GliumDrawer::from(renderer);
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input.set_handler(WinitInputHandler {
log: log.clone(),
pointer,
keyboard,
window_map: window_map.clone(),
pointer_location: (0.0, 0.0),
serial: 0,
});
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/*
* Add a listening socket:
*/
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let name = display.add_socket_auto().unwrap().into_string().unwrap();
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println!("Listening on socket: {}", name);
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loop {
input.dispatch_new_events().unwrap();
let mut frame = drawer.draw();
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frame.clear(None, Some((0.8, 0.8, 0.9, 1.0)), false, None, None);
// redraw the frame, in a simple but inneficient way
{
let screen_dimensions = drawer.get_framebuffer_dimensions();
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window_map
.borrow()
.with_windows_from_bottom_to_top(|toplevel_surface, initial_place| {
if let Some(wl_surface) = toplevel_surface.get_surface() {
// this surface is a root of a subsurface tree that needs to be drawn
compositor_token
.with_surface_tree_upward(
wl_surface,
initial_place,
|_surface, attributes, role, &(mut x, mut y)| {
if let Some((ref contents, (w, h))) = attributes.user_data.buffer {
// there is actually something to draw !
if let Ok(subdata) = Role::<SubsurfaceRole>::data(role) {
x += subdata.x;
y += subdata.y;
}
drawer.render(
&mut frame,
contents,
(w, h),
(x, y),
screen_dimensions,
);
TraversalAction::DoChildren((x, y))
} else {
// we are not display, so our children are neither
TraversalAction::SkipChildren
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}
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},
)
.unwrap();
}
});
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}
frame.finish().unwrap();
event_loop.dispatch(Some(16)).unwrap();
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display.flush_clients();
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window_map.borrow_mut().refresh();
}
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}