Graphite/desktop/src/cef.rs

82 lines
2.2 KiB
Rust

use crate::{CustomEvent, FrameBuffer};
use std::{
sync::{Arc, Mutex, mpsc::Receiver},
time::Instant,
};
mod context;
mod dirs;
mod input;
mod internal;
mod scheme_handler;
pub(crate) use context::{Context, InitError, Initialized, Setup, SetupError};
use winit::event_loop::EventLoopProxy;
pub(crate) trait CefEventHandler: Clone {
fn window_size(&self) -> WindowSize;
fn draw(&self, frame_buffer: FrameBuffer);
/// Scheudule the main event loop to run the cef event loop after the timeout
/// [`_cef_browser_process_handler_t::on_schedule_message_pump_work`] for more documentation.
fn schedule_cef_message_loop_work(&self, scheduled_time: Instant);
}
#[derive(Clone, Copy)]
pub(crate) struct WindowSize {
pub(crate) width: usize,
pub(crate) height: usize,
}
impl WindowSize {
pub(crate) fn new(width: usize, height: usize) -> Self {
Self { width, height }
}
}
#[derive(Clone)]
pub(crate) struct CefHandler {
window_size_receiver: Arc<Mutex<WindowSizeReceiver>>,
event_loop_proxy: EventLoopProxy<CustomEvent>,
}
struct WindowSizeReceiver {
receiver: Receiver<WindowSize>,
window_size: WindowSize,
}
impl WindowSizeReceiver {
fn new(window_size_receiver: Receiver<WindowSize>) -> Self {
Self {
window_size: WindowSize { width: 1, height: 1 },
receiver: window_size_receiver,
}
}
}
impl CefHandler {
pub(crate) fn new(window_size_receiver: Receiver<WindowSize>, event_loop_proxy: EventLoopProxy<CustomEvent>) -> Self {
Self {
window_size_receiver: Arc::new(Mutex::new(WindowSizeReceiver::new(window_size_receiver))),
event_loop_proxy,
}
}
}
impl CefEventHandler for CefHandler {
fn window_size(&self) -> WindowSize {
let Ok(mut guard) = self.window_size_receiver.lock() else {
tracing::error!("Failed to lock window_size_receiver");
return WindowSize::new(1, 1);
};
let WindowSizeReceiver { receiver, window_size } = &mut *guard;
for new_window_size in receiver.try_iter() {
*window_size = new_window_size;
}
*window_size
}
fn draw(&self, frame_buffer: FrameBuffer) {
let _ = self.event_loop_proxy.send_event(CustomEvent::UiUpdate(frame_buffer));
}
fn schedule_cef_message_loop_work(&self, scheduled_time: std::time::Instant) {
let _ = self.event_loop_proxy.send_event(CustomEvent::ScheduleBrowserWork(scheduled_time));
}
}