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, Buffer};
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use slog::{Drain, Logger};
use smithay::backend::graphics::egl::EGLGraphicsBackend;
use smithay::backend::graphics::egl::wayland::{EGLWaylandExtensions, Format};
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use smithay::backend::input::{self, Event, InputBackend, InputHandler, KeyboardKeyEvent, PointerAxisEvent,
PointerButtonEvent, PointerMotionAbsoluteEvent};
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use smithay::backend::winit;
use smithay::wayland::compositor::{SubsurfaceRole, TraversalAction};
use smithay::wayland::compositor::roles::Role;
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use smithay::wayland::output::{Mode, Output, PhysicalProperties};
use smithay::wayland::seat::{KeyboardHandle, PointerHandle, Seat};
use smithay::wayland::shm::init_shm_global;
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use std::cell::RefCell;
use std::rc::Rc;
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use wayland_server::protocol::{wl_output, wl_pointer};
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struct WinitInputHandler {
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log: Logger,
pointer: PointerHandle,
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keyboard: KeyboardHandle,
window_map: Rc<RefCell<MyWindowMap>>,
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pointer_location: (f64, f64),
serial: u32,
}
impl WinitInputHandler {
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fn next_serial(&mut self) -> u32 {
self.serial += 1;
self.serial
}
}
impl InputHandler<winit::WinitInputBackend> for WinitInputHandler {
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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();
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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, evt: winit::WinitMouseWheelEvent) {
let axis = match evt.axis() {
input::Axis::Vertical => wayland_server::protocol::wl_pointer::Axis::VerticalScroll,
input::Axis::Horizontal => wayland_server::protocol::wl_pointer::Axis::HorizontalScroll,
};
self.pointer.axis(axis, evt.amount(), evt.time());
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}
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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let egl_display = Rc::new(RefCell::new(
if let Ok(egl_display) = renderer.bind_wl_display(&display) {
info!(log, "EGL hardware-acceleration enabled");
Some(egl_display)
} else {
None
}
));
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let (w, h) = renderer.get_framebuffer_dimensions();
let drawer = GliumDrawer::from(renderer);
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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(), egl_display);
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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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let (output_token, _output_global) = Output::new(
&mut event_loop,
"Winit".into(),
PhysicalProperties {
width: 0,
height: 0,
subpixel: wl_output::Subpixel::Unknown,
maker: "Smithay".into(),
model: "Winit".into(),
},
log.clone(),
);
event_loop
.state()
.get_mut(&output_token)
.change_current_state(
Some(Mode {
width: w as i32,
height: h as i32,
refresh: 60_000,
}),
None,
None,
);
event_loop
.state()
.get_mut(&output_token)
.set_preferred(Mode {
width: w as i32,
height: h as i32,
refresh: 60_000,
});
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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, Some(1.0), None);
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// 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)| {
// there is actually something to draw !
if attributes.user_data.texture.is_none() {
let mut remove = false;
match attributes.user_data.buffer {
Some(Buffer::Egl { ref images }) => {
match images.format {
Format::RGB | Format::RGBA => {
attributes.user_data.texture = drawer.texture_from_egl(&images);
},
_ => {
// we don't handle the more complex formats here.
attributes.user_data.texture = None;
remove = true;
},
};
},
Some(Buffer::Shm { ref data, ref size }) => {
attributes.user_data.texture = Some(drawer.texture_from_mem(data, *size));
},
_ => {},
}
if remove {
attributes.user_data.buffer = None;
}
}
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if let Some(ref texture) = attributes.user_data.texture {
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if let Ok(subdata) = Role::<SubsurfaceRole>::data(role) {
x += subdata.x;
y += subdata.y;
}
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drawer.render_texture(
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&mut frame,
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texture,
match *attributes.user_data.buffer.as_ref().unwrap() {
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Buffer::Egl { ref images } => images.y_inverted,
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Buffer::Shm { .. } => false,
},
match *attributes.user_data.buffer.as_ref().unwrap() {
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Buffer::Egl { ref images } => (images.width, images.height),
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Buffer::Shm { ref size, .. } => *size,
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},
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(x, y),
screen_dimensions,
glium::Blend {
color: glium::BlendingFunction::Addition {
source: glium::LinearBlendingFactor::One,
destination: glium::LinearBlendingFactor::OneMinusSourceAlpha,
},
alpha: glium::BlendingFunction::Addition {
source: glium::LinearBlendingFactor::One,
destination: glium::LinearBlendingFactor::OneMinusSourceAlpha,
},
..Default::default()
}
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);
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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}