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|
use std::collections::HashSet;
use std::sync::mpsc::{channel, Receiver, Sender};
use std::sync::{Arc, Mutex};
use std::thread;
use crate::io::{Window, WindowSignal};
use crate::logs::{elog, LogLevel};
use pixels::{Error, Pixels, SurfaceTexture};
use winit::dpi::LogicalSize;
use winit::event::{Event, WindowEvent};
use winit::event_loop::EventLoopBuilder;
use winit::keyboard::{KeyCode, PhysicalKey};
use winit::platform::wayland::EventLoopBuilderExtWayland;
use winit::window::WindowBuilder;
use winit_input_helper::WinitInputHelper;
const WIDTH: u32 = 160;
const HEIGHT: u32 = 144;
pub type Keys = Arc<Mutex<HashSet<KeyCode>>>;
pub struct DesktopWindow {
fb_send: Sender<Box<[u32; 160 * 144]>>,
signal_recv: Receiver<WindowSignal>,
pub keys: Keys,
}
impl DesktopWindow {
pub fn new(title: impl Into<String>) -> Result<Self, Error> {
let title: String = title.into();
let (fb_send, fb_recv) = channel();
let (signal_send, signal_recv) = channel();
let keys = Arc::new(Mutex::new(HashSet::new()));
let key_eventloop = keys.clone();
thread::spawn(move || {
let keys = key_eventloop;
let event_loop = EventLoopBuilder::new()
.with_any_thread(true)
.build()
.unwrap();
let mut input = WinitInputHelper::new();
let window = Arc::new({
let size = LogicalSize::new((WIDTH * 4) as f64, (HEIGHT * 4) as f64);
WindowBuilder::new()
.with_title(title)
.with_inner_size(size)
.with_min_inner_size(size)
.build(&event_loop)
.unwrap()
});
let mut pixels = {
let window_size = window.inner_size();
let surface_texture =
SurfaceTexture::new(window_size.width, window_size.height, window.clone());
Pixels::new(WIDTH, HEIGHT, surface_texture).unwrap()
};
let mut fb = Box::new([0; 160 * 144]);
event_loop
.run(|event, elwt| {
if let Event::WindowEvent {
event: WindowEvent::RedrawRequested,
..
} = event
{
loop {
if let Ok(new_fb) = fb_recv.try_recv() {
fb = new_fb;
} else {
break;
}
}
draw(pixels.frame_mut(), &fb);
if let Err(err) = pixels.render() {
elog(LogLevel::Error, format!("Error during render: {}", err));
return;
}
}
if let Event::WindowEvent {
window_id: _,
event:
WindowEvent::KeyboardInput {
device_id: _,
event: ref keyboard_event,
is_synthetic: _,
},
} = event
{
if let Ok(mut keys) = keys.lock() {
if let PhysicalKey::Code(keycode) = keyboard_event.physical_key {
if keyboard_event.state.is_pressed() {
(*keys).insert(keycode);
} else {
(*keys).remove(&keycode);
}
}
}
}
if input.update(&event) {
if input.close_requested() {
elwt.exit();
if let Err(err) = signal_send.send(WindowSignal::Exit) {
elog(
LogLevel::Error,
format!("window signal send failed with error {}", err),
);
}
return;
}
if let Some(size) = input.window_resized() {
if let Err(err) = pixels.resize_surface(size.width, size.height) {
elog(LogLevel::Error, format!("Error during resize: {}", err));
return;
}
}
window.request_redraw();
}
})
.unwrap();
});
Ok(Self {
fb_send,
signal_recv,
keys,
})
}
}
impl Window for DesktopWindow {
fn update(&mut self, fb: Box<[u32; 160 * 144]>) -> Option<WindowSignal> {
if let Err(err) = self.fb_send.send(fb) {
elog(
LogLevel::Error,
format!("Framebuffer channel send failed with error: {}", err),
);
}
if let Ok(signal) = self.signal_recv.try_recv() {
Some(signal)
} else {
None
}
}
}
fn draw(frame: &mut [u8], fb: &[u32; 160 * 144]) {
for (i, pixel) in frame.chunks_exact_mut(4).enumerate() {
pixel.copy_from_slice(&((fb[i] << 8) | 0xff).to_be_bytes())
}
}
|
