leyoda/winit
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Remove lifetime from the Event

Browse source 
Lifetimes don't work nicely when dealing with multithreaded environments
in the current design of the existing winit's event handling model, so
remove it in favor of `InnerSizeWriter` fences passed to client, so they
could try to update the size.

Fixes #1387.
This commit is contained in:
Kirill Chibisov 2023-07-31 00:39:01 +04:00 • committed by GitHub
parent 2b2dd6b65d
commit 9ac3259a79
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
31 changed files with 252 additions and 429 deletions
Download patch file Download diff file Expand all files Collapse all files

34
src/platform_impl/linux/x11/event_processor.rs
View file

@ -4,7 +4,7 @@ use std::{
os::raw::{c_char, c_int, c_long, c_ulong},
rc::Rc,
slice,
sync::Arc,
sync::{Arc, Mutex},
};
use x11rb::protocol::xproto::{self, ConnectionExt as _};
@ -16,7 +16,6 @@ use super::{
WindowId, XExtension,
};
use crate::platform_impl::platform::x11::ime::{ImeEvent, ImeEventReceiver, ImeRequest};
use crate::{
dpi::{PhysicalPosition, PhysicalSize},
event::{DeviceEvent, ElementState, Event, Ime, RawKeyEvent, TouchPhase, WindowEvent},
@ -24,6 +23,10 @@ use crate::{
keyboard::ModifiersState,
platform_impl::platform::common::{keymap, xkb_state::KbdState},
};
use crate::{
event::InnerSizeWriter,
platform_impl::platform::x11::ime::{ImeEvent, ImeEventReceiver, ImeRequest},
};
/// The X11 documentation states: "Keycodes lie in the inclusive range `[8, 255]`".
const KEYCODE_OFFSET: u8 = 8;
@ -126,7 +129,7 @@ impl<T: 'static> EventProcessor<T> {
pub(super) fn process_event<F>(&mut self, xev: &mut ffi::XEvent, mut callback: F)
where
F: FnMut(Event<'_, T>),
F: FnMut(Event<T>),
{
let wt = get_xtarget(&self.target);
let atoms = wt.x_connection().atoms();
@ -437,19 +440,25 @@ impl<T: 'static> EventProcessor<T> {
);
let old_inner_size = PhysicalSize::new(width, height);
let mut new_inner_size = PhysicalSize::new(new_width, new_height);
let new_inner_size = PhysicalSize::new(new_width, new_height);
// Unlock shared state to prevent deadlock in callback below
drop(shared_state_lock);
let inner_size = Arc::new(Mutex::new(new_inner_size));
callback(Event::WindowEvent {
window_id,
event: WindowEvent::ScaleFactorChanged {
scale_factor: new_scale_factor,
new_inner_size: &mut new_inner_size,
inner_size_writer: InnerSizeWriter::new(Arc::downgrade(
&inner_size,
)),
},
});
let new_inner_size = *inner_size.lock().unwrap();
drop(inner_size);
if new_inner_size != old_inner_size {
window.request_inner_size_physical(
new_inner_size.width,
@ -1308,17 +1317,22 @@ impl<T: 'static> EventProcessor<T> {
let window_id = crate::window::WindowId(*window_id);
let old_inner_size = PhysicalSize::new(width, height);
let mut new_inner_size =
PhysicalSize::new(new_width, new_height);
let inner_size = Arc::new(Mutex::new(
PhysicalSize::new(new_width, new_height),
));
callback(Event::WindowEvent {
window_id,
event: WindowEvent::ScaleFactorChanged {
scale_factor: new_monitor.scale_factor,
new_inner_size: &mut new_inner_size,
inner_size_writer: InnerSizeWriter::new(
Arc::downgrade(&inner_size),
),
},
});
let new_inner_size = *inner_size.lock().unwrap();
drop(inner_size);
if new_inner_size != old_inner_size {
let (new_width, new_height) = new_inner_size.into();
window.request_inner_size_physical(
@ -1400,7 +1414,7 @@ impl<T: 'static> EventProcessor<T> {
kb_state: &mut KbdState,
callback: &mut F,
) where
F: FnMut(Event<'_, T>),
F: FnMut(Event<T>),
{
let device_id = mkdid(util::VIRTUAL_CORE_KEYBOARD.into());