mirror of
https://github.com/bevyengine/bevy
synced 2024-12-22 19:13:08 +00:00
336 lines
14 KiB
Rust
336 lines
14 KiB
Rust
mod converters;
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mod winit_config;
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mod winit_windows;
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use bevy_input::{
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keyboard::KeyboardInput,
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mouse::{MouseButtonInput, MouseMotion, MouseScrollUnit, MouseWheel},
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touch::TouchInput,
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};
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pub use winit_config::*;
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pub use winit_windows::*;
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use bevy_app::{prelude::*, AppExit};
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use bevy_ecs::{IntoThreadLocalSystem, Resources, World};
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use bevy_math::Vec2;
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use bevy_utils::tracing::trace;
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use bevy_window::{
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CreateWindow, CursorMoved, ReceivedCharacter, Window, WindowCloseRequested, WindowCreated,
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WindowResized, Windows,
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};
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use winit::{
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event::{self, DeviceEvent, Event, WindowEvent},
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event_loop::{ControlFlow, EventLoop, EventLoopWindowTarget},
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};
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#[derive(Default)]
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pub struct WinitPlugin;
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#[derive(Debug)]
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pub struct EventLoopProxyPtr(pub usize);
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impl Plugin for WinitPlugin {
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fn build(&self, app: &mut AppBuilder) {
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app
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// TODO: It would be great to provide a raw winit WindowEvent here, but the lifetime on it is
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// stopping us. there are plans to remove the lifetime: https://github.com/rust-windowing/winit/pull/1456
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// .add_event::<winit::event::WindowEvent>()
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.init_resource::<WinitWindows>()
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.set_runner(winit_runner)
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.add_system(change_window.thread_local_system());
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}
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}
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fn change_window(_: &mut World, resources: &mut Resources) {
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let winit_windows = resources.get::<WinitWindows>().unwrap();
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let mut windows = resources.get_mut::<Windows>().unwrap();
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for bevy_window in windows.iter_mut() {
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let id = bevy_window.id();
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for command in bevy_window.drain_commands() {
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match command {
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bevy_window::WindowCommand::SetWindowMode {
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mode,
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resolution: (width, height),
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} => {
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let window = winit_windows.get_window(id).unwrap();
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match mode {
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bevy_window::WindowMode::BorderlessFullscreen => {
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window.set_fullscreen(Some(winit::window::Fullscreen::Borderless(None)))
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}
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bevy_window::WindowMode::Fullscreen { use_size } => window.set_fullscreen(
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Some(winit::window::Fullscreen::Exclusive(match use_size {
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true => get_fitting_videomode(
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&window.current_monitor().unwrap(),
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width,
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height,
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),
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false => get_best_videomode(&window.current_monitor().unwrap()),
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})),
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),
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bevy_window::WindowMode::Windowed => window.set_fullscreen(None),
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}
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}
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bevy_window::WindowCommand::SetTitle { title } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_title(&title);
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}
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bevy_window::WindowCommand::SetResolution { width, height } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_inner_size(winit::dpi::PhysicalSize::new(width, height));
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}
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bevy_window::WindowCommand::SetVsync { .. } => (),
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bevy_window::WindowCommand::SetResizable { resizable } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_resizable(resizable);
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}
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bevy_window::WindowCommand::SetDecorations { decorations } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_decorations(decorations);
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}
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bevy_window::WindowCommand::SetCursorLockMode { locked } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_cursor_grab(locked).unwrap();
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}
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bevy_window::WindowCommand::SetCursorVisibility { visible } => {
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let window = winit_windows.get_window(id).unwrap();
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window.set_cursor_visible(visible);
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}
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}
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}
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}
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}
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fn run<F>(event_loop: EventLoop<()>, event_handler: F) -> !
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where
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F: 'static + FnMut(Event<'_, ()>, &EventLoopWindowTarget<()>, &mut ControlFlow),
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{
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event_loop.run(event_handler)
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}
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// TODO: It may be worth moving this cfg into a procedural macro so that it can be referenced by
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// a single name instead of being copied around.
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// https://gist.github.com/jakerr/231dee4a138f7a5f25148ea8f39b382e seems to work.
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#[cfg(any(
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target_os = "windows",
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target_os = "macos",
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target_os = "linux",
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target_os = "dragonfly",
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target_os = "freebsd",
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target_os = "netbsd",
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target_os = "openbsd"
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))]
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fn run_return<F>(event_loop: &mut EventLoop<()>, event_handler: F)
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where
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F: FnMut(Event<'_, ()>, &EventLoopWindowTarget<()>, &mut ControlFlow),
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{
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use winit::platform::desktop::EventLoopExtDesktop;
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event_loop.run_return(event_handler)
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}
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#[cfg(not(any(
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target_os = "windows",
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target_os = "macos",
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target_os = "linux",
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target_os = "dragonfly",
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target_os = "freebsd",
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target_os = "netbsd",
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target_os = "openbsd"
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)))]
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fn run_return<F>(_event_loop: &mut EventLoop<()>, _event_handler: F)
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where
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F: FnMut(Event<'_, ()>, &EventLoopWindowTarget<()>, &mut ControlFlow),
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{
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panic!("Run return is not supported on this platform!")
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}
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pub fn winit_runner(mut app: App) {
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let mut event_loop = EventLoop::new();
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let mut create_window_event_reader = EventReader::<CreateWindow>::default();
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let mut app_exit_event_reader = EventReader::<AppExit>::default();
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app.resources
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.insert_thread_local(EventLoopProxyPtr(
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Box::into_raw(Box::new(event_loop.create_proxy())) as usize,
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));
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handle_create_window_events(
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&mut app.resources,
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&event_loop,
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&mut create_window_event_reader,
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);
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app.initialize();
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trace!("Entering winit event loop");
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let should_return_from_run = app
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.resources
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.get::<WinitConfig>()
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.map_or(false, |config| config.return_from_run);
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let event_handler = move |event: Event<()>,
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event_loop: &EventLoopWindowTarget<()>,
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control_flow: &mut ControlFlow| {
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*control_flow = if cfg!(feature = "metal-auto-capture") {
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ControlFlow::Exit
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} else {
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ControlFlow::Poll
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};
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if let Some(app_exit_events) = app.resources.get_mut::<Events<AppExit>>() {
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if app_exit_event_reader.latest(&app_exit_events).is_some() {
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*control_flow = ControlFlow::Exit;
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}
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}
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match event {
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event::Event::WindowEvent {
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event: WindowEvent::Resized(size),
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window_id: winit_window_id,
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..
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} => {
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let winit_windows = app.resources.get_mut::<WinitWindows>().unwrap();
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let mut windows = app.resources.get_mut::<Windows>().unwrap();
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let window_id = winit_windows.get_window_id(winit_window_id).unwrap();
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let window = windows.get_mut(window_id).unwrap();
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window.update_resolution_from_backend(size.width, size.height);
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let mut resize_events = app.resources.get_mut::<Events<WindowResized>>().unwrap();
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resize_events.send(WindowResized {
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id: window_id,
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height: window.height() as usize,
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width: window.width() as usize,
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});
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}
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event::Event::WindowEvent {
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event,
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window_id: winit_window_id,
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..
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} => match event {
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WindowEvent::CloseRequested => {
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let mut window_close_requested_events = app
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.resources
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.get_mut::<Events<WindowCloseRequested>>()
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.unwrap();
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let winit_windows = app.resources.get_mut::<WinitWindows>().unwrap();
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let window_id = winit_windows.get_window_id(winit_window_id).unwrap();
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window_close_requested_events.send(WindowCloseRequested { id: window_id });
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}
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WindowEvent::KeyboardInput { ref input, .. } => {
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let mut keyboard_input_events =
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app.resources.get_mut::<Events<KeyboardInput>>().unwrap();
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keyboard_input_events.send(converters::convert_keyboard_input(input));
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}
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WindowEvent::CursorMoved { position, .. } => {
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let mut cursor_moved_events =
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app.resources.get_mut::<Events<CursorMoved>>().unwrap();
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let winit_windows = app.resources.get_mut::<WinitWindows>().unwrap();
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let window_id = winit_windows.get_window_id(winit_window_id).unwrap();
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let window = winit_windows.get_window(window_id).unwrap();
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let inner_size = window.inner_size();
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// move origin to bottom left
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let y_position = inner_size.height as f32 - position.y as f32;
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cursor_moved_events.send(CursorMoved {
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id: window_id,
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position: Vec2::new(position.x as f32, y_position as f32),
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});
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}
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WindowEvent::MouseInput { state, button, .. } => {
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let mut mouse_button_input_events =
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app.resources.get_mut::<Events<MouseButtonInput>>().unwrap();
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mouse_button_input_events.send(MouseButtonInput {
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button: converters::convert_mouse_button(button),
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state: converters::convert_element_state(state),
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});
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}
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WindowEvent::MouseWheel { delta, .. } => match delta {
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event::MouseScrollDelta::LineDelta(x, y) => {
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let mut mouse_wheel_input_events =
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app.resources.get_mut::<Events<MouseWheel>>().unwrap();
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mouse_wheel_input_events.send(MouseWheel {
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unit: MouseScrollUnit::Line,
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x,
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y,
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});
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}
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event::MouseScrollDelta::PixelDelta(p) => {
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let mut mouse_wheel_input_events =
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app.resources.get_mut::<Events<MouseWheel>>().unwrap();
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mouse_wheel_input_events.send(MouseWheel {
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unit: MouseScrollUnit::Pixel,
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x: p.x as f32,
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y: p.y as f32,
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});
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}
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},
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WindowEvent::Touch(mut touch) => {
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let mut touch_input_events =
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app.resources.get_mut::<Events<TouchInput>>().unwrap();
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let windows = app.resources.get_mut::<Windows>().unwrap();
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// FIXME?: On Android window start is top while on PC/Linux/OSX on bottom
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if cfg!(target_os = "android") {
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let window_height = windows.get_primary().unwrap().height();
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touch.location.y = window_height as f64 - touch.location.y;
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}
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touch_input_events.send(converters::convert_touch_input(touch));
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}
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WindowEvent::ReceivedCharacter(c) => {
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let mut char_input_events = app
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.resources
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.get_mut::<Events<ReceivedCharacter>>()
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.unwrap();
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let winit_windows = app.resources.get_mut::<WinitWindows>().unwrap();
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let window_id = winit_windows.get_window_id(winit_window_id).unwrap();
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char_input_events.send(ReceivedCharacter {
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id: window_id,
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char: c,
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})
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}
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_ => {}
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},
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event::Event::DeviceEvent { ref event, .. } => {
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if let DeviceEvent::MouseMotion { delta } = event {
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let mut mouse_motion_events =
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app.resources.get_mut::<Events<MouseMotion>>().unwrap();
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mouse_motion_events.send(MouseMotion {
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delta: Vec2::new(delta.0 as f32, delta.1 as f32),
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});
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}
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}
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event::Event::MainEventsCleared => {
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handle_create_window_events(
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&mut app.resources,
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event_loop,
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&mut create_window_event_reader,
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);
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app.update();
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}
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_ => (),
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}
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};
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if should_return_from_run {
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run_return(&mut event_loop, event_handler);
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} else {
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run(event_loop, event_handler);
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}
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}
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fn handle_create_window_events(
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resources: &mut Resources,
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event_loop: &EventLoopWindowTarget<()>,
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create_window_event_reader: &mut EventReader<CreateWindow>,
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) {
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let mut winit_windows = resources.get_mut::<WinitWindows>().unwrap();
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let mut windows = resources.get_mut::<Windows>().unwrap();
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let create_window_events = resources.get::<Events<CreateWindow>>().unwrap();
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let mut window_created_events = resources.get_mut::<Events<WindowCreated>>().unwrap();
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for create_window_event in create_window_event_reader.iter(&create_window_events) {
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let window = Window::new(create_window_event.id, &create_window_event.descriptor);
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winit_windows.create_window(event_loop, &window);
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let window_id = window.id();
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windows.add(window);
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window_created_events.send(WindowCreated { id: window_id });
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}
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}
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