mirror of
https://github.com/italicsjenga/winit-sonoma-fix.git
synced 2024-12-27 15:41:31 +11:00
488 lines
21 KiB
Rust
488 lines
21 KiB
Rust
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use cocoa::{self, appkit, foundation};
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use cocoa::appkit::{NSApplication, NSEvent, NSView, NSWindow};
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use events::{self, ElementState, Event, MouseButton, TouchPhase, WindowEvent};
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use super::window::Window;
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use std;
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pub struct EventsLoop {
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pub windows: std::sync::Mutex<Vec<std::sync::Arc<Window>>>,
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pub pending_events: std::sync::Mutex<std::collections::VecDeque<Event>>,
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modifiers: std::sync::Mutex<Modifiers>,
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interrupted: std::sync::atomic::AtomicBool,
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/// The user's event callback given via either the `poll_events` or `run_forever` method. This
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/// will only be `Some` for the duration of whichever of these methods has been called and will
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/// always be `None` otherwise.
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pub callback: std::sync::Mutex<Option<Box<FnMut(Event)>>>
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}
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struct Modifiers {
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shift_pressed: bool,
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ctrl_pressed: bool,
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win_pressed: bool,
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alt_pressed: bool,
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}
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impl EventsLoop {
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pub fn new() -> Self {
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let modifiers = Modifiers {
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shift_pressed: false,
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ctrl_pressed: false,
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win_pressed: false,
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alt_pressed: false,
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};
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EventsLoop {
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windows: std::sync::Mutex::new(Vec::new()),
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pending_events: std::sync::Mutex::new(std::collections::VecDeque::new()),
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modifiers: std::sync::Mutex::new(modifiers),
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interrupted: std::sync::atomic::AtomicBool::new(false),
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callback: std::sync::Mutex::new(None),
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}
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}
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pub fn poll_events<F>(&self, callback: F)
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where F: FnMut(Event),
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{
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unsafe {
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self.store_callback(callback);
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}
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// Loop as long as we have pending events to return.
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loop {
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// First, yield all pending events.
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while let Some(event) = self.pending_events.lock().unwrap().pop_front() {
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if let Ok(mut callback) = self.callback.lock() {
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callback.as_mut().unwrap()(event);
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}
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}
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unsafe {
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let pool = foundation::NSAutoreleasePool::new(cocoa::base::nil);
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// Poll for the next event, returning `nil` if there are none.
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let ns_event = appkit::NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
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appkit::NSAnyEventMask.bits() | appkit::NSEventMaskPressure.bits(),
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foundation::NSDate::distantPast(cocoa::base::nil),
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foundation::NSDefaultRunLoopMode,
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cocoa::base::YES);
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let event = self.ns_event_to_event(ns_event);
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let _: () = msg_send![pool, release];
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match event {
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// Call the user's callback.
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Some(event) => if let Ok(mut callback) = self.callback.lock() {
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callback.as_mut().unwrap()(event);
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},
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None => break,
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}
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}
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}
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// Drop the callback to enforce our guarantee that it will never live longer than the
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// duration of this method.
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self.callback.lock().unwrap().take();
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}
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pub fn run_forever<F>(&self, callback: F)
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where F: FnMut(Event)
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{
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self.interrupted.store(false, std::sync::atomic::Ordering::Relaxed);
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unsafe {
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self.store_callback(callback);
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}
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loop {
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// First, yield all pending events.
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while let Some(event) = self.pending_events.lock().unwrap().pop_front() {
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if let Ok(mut callback) = self.callback.lock() {
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callback.as_mut().unwrap()(event);
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}
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}
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unsafe {
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let pool = foundation::NSAutoreleasePool::new(cocoa::base::nil);
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// Wait for the next event. Note that this function blocks during resize.
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let ns_event = appkit::NSApp().nextEventMatchingMask_untilDate_inMode_dequeue_(
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appkit::NSAnyEventMask.bits() | appkit::NSEventMaskPressure.bits(),
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foundation::NSDate::distantFuture(cocoa::base::nil),
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foundation::NSDefaultRunLoopMode,
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cocoa::base::YES);
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// FIXME: we should check explicitly for `Awakened` events in `ns_event_to_event`
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// and not just assume that an `Awakened` event occurred every time `None` is
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// returned. Also, `Awakened` should be a variant of `Event`, not `WindowEvent`, so
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// for now we do this hack with a fake ID.
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let event = self.ns_event_to_event(ns_event)
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.unwrap_or(Event::WindowEvent {
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window_id: ::WindowId(super::WindowId(0)),
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event: WindowEvent::Awakened,
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});
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if let Ok(mut callback) = self.callback.lock() {
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callback.as_mut().unwrap()(event);
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}
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let _: () = msg_send![pool, release];
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}
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if self.interrupted.load(std::sync::atomic::Ordering::Relaxed) {
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break;
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}
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}
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// Drop the callback to enforce our guarantee that it will never live longer than the
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// duration of this method.
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self.callback.lock().unwrap().take();
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}
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pub fn interrupt(&self) {
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self.interrupted.store(true, std::sync::atomic::Ordering::Relaxed);
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// TODO: We should also signal to "awaken" the cocoa event loop here.
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}
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// Here we store user's `callback` behind the `EventsLoop`'s mutex so that it may be safely
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// shared between each of the window delegates.
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//
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// In order to store the `callback` within the `Eventsloop` as a trait object, we must
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// `Box` the callback. Normally this would require that `F: 'static`, however we know that
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// the callback cannot live longer than the lifetime of this method. Thus, we use `unsafe`
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// to work around this requirement and enforce this guarantee ourselves.
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//
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// This should *only* be called at the beginning of `poll_events` and `run_forever`, both of
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// which *must* drop the callback at the end of their scope.
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unsafe fn store_callback<F>(&self, callback: F)
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where F: FnMut(Event)
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{
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let boxed: Box<F> = Box::new(callback);
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let boxed: Box<FnMut(Event)> = std::mem::transmute(boxed as Box<FnMut(Event)>);
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*self.callback.lock().unwrap() = Some(boxed);
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}
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// Convert some given `NSEvent` into a winit `Event`.
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unsafe fn ns_event_to_event(&self, ns_event: cocoa::base::id) -> Option<Event> {
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if ns_event == cocoa::base::nil {
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return None;
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}
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let event_type = ns_event.eventType();
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let window_id = super::window::get_window_id(ns_event.window());
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let windows = self.windows.lock().unwrap();
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let maybe_window = windows.iter().find(|window| window_id == window.id());
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let window = match maybe_window {
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Some(window) => window,
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None => return None,
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};
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// FIXME: Document this. Why do we do this?
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match event_type {
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appkit::NSKeyDown => (),
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_ => appkit::NSApp().sendEvent_(ns_event),
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}
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let into_event = |window_event| Event::WindowEvent {
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window_id: ::WindowId(window_id),
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event: window_event,
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};
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match event_type {
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appkit::NSKeyDown => {
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let mut events = std::collections::VecDeque::new();
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let received_c_str = foundation::NSString::UTF8String(ns_event.characters());
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let received_str = std::ffi::CStr::from_ptr(received_c_str);
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for received_char in std::str::from_utf8(received_str.to_bytes()).unwrap().chars() {
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let window_event = WindowEvent::ReceivedCharacter(received_char);
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events.push_back(into_event(window_event));
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}
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let vkey = to_virtual_key_code(NSEvent::keyCode(ns_event));
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let state = ElementState::Pressed;
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let code = NSEvent::keyCode(ns_event) as u8;
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let window_event = WindowEvent::KeyboardInput(state, code, vkey);
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events.push_back(into_event(window_event));
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let event = events.pop_front();
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self.pending_events.lock().unwrap().extend(events.into_iter());
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event
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},
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appkit::NSKeyUp => {
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let vkey = to_virtual_key_code(NSEvent::keyCode(ns_event));
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let state = ElementState::Released;
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let code = NSEvent::keyCode(ns_event) as u8;
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let window_event = WindowEvent::KeyboardInput(state, code, vkey);
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Some(into_event(window_event))
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},
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appkit::NSFlagsChanged => {
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let mut modifiers = self.modifiers.lock().unwrap();
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unsafe fn modifier_event(event: cocoa::base::id,
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keymask: appkit::NSEventModifierFlags,
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key: events::VirtualKeyCode,
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key_pressed: bool) -> Option<WindowEvent>
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{
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if !key_pressed && NSEvent::modifierFlags(event).contains(keymask) {
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let state = ElementState::Pressed;
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let code = NSEvent::keyCode(event) as u8;
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let window_event = WindowEvent::KeyboardInput(state, code, Some(key));
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Some(window_event)
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} else if key_pressed && !NSEvent::modifierFlags(event).contains(keymask) {
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let state = ElementState::Released;
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let code = NSEvent::keyCode(event) as u8;
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let window_event = WindowEvent::KeyboardInput(state, code, Some(key));
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Some(window_event)
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} else {
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None
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}
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}
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let mut events = std::collections::VecDeque::new();
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if let Some(window_event) = modifier_event(ns_event,
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appkit::NSShiftKeyMask,
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events::VirtualKeyCode::LShift,
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modifiers.shift_pressed)
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{
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modifiers.shift_pressed = !modifiers.shift_pressed;
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events.push_back(into_event(window_event));
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}
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if let Some(window_event) = modifier_event(ns_event,
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appkit::NSControlKeyMask,
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events::VirtualKeyCode::LControl,
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modifiers.ctrl_pressed)
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{
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modifiers.ctrl_pressed = !modifiers.ctrl_pressed;
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events.push_back(into_event(window_event));
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}
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if let Some(window_event) = modifier_event(ns_event,
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appkit::NSCommandKeyMask,
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events::VirtualKeyCode::LWin,
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modifiers.win_pressed)
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{
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modifiers.win_pressed = !modifiers.win_pressed;
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events.push_back(into_event(window_event));
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}
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if let Some(window_event) = modifier_event(ns_event,
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appkit::NSAlternateKeyMask,
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events::VirtualKeyCode::LAlt,
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modifiers.alt_pressed)
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{
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modifiers.alt_pressed = !modifiers.alt_pressed;
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events.push_back(into_event(window_event));
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}
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let event = events.pop_front();
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self.pending_events.lock().unwrap().extend(events.into_iter());
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event
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},
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appkit::NSLeftMouseDown => { Some(into_event(WindowEvent::MouseInput(ElementState::Pressed, MouseButton::Left))) },
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appkit::NSLeftMouseUp => { Some(into_event(WindowEvent::MouseInput(ElementState::Released, MouseButton::Left))) },
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appkit::NSRightMouseDown => { Some(into_event(WindowEvent::MouseInput(ElementState::Pressed, MouseButton::Right))) },
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appkit::NSRightMouseUp => { Some(into_event(WindowEvent::MouseInput(ElementState::Released, MouseButton::Right))) },
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appkit::NSOtherMouseDown => { Some(into_event(WindowEvent::MouseInput(ElementState::Pressed, MouseButton::Middle))) },
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appkit::NSOtherMouseUp => { Some(into_event(WindowEvent::MouseInput(ElementState::Released, MouseButton::Middle))) },
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appkit::NSMouseEntered => { Some(into_event(WindowEvent::MouseEntered)) },
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appkit::NSMouseExited => { Some(into_event(WindowEvent::MouseLeft)) },
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appkit::NSMouseMoved |
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appkit::NSLeftMouseDragged |
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appkit::NSOtherMouseDragged |
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appkit::NSRightMouseDragged => {
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let window_point = ns_event.locationInWindow();
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let ns_window: cocoa::base::id = msg_send![ns_event, window];
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let view_point = if ns_window == cocoa::base::nil {
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let ns_size = foundation::NSSize::new(0.0, 0.0);
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let ns_rect = foundation::NSRect::new(window_point, ns_size);
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let window_rect = window.window.convertRectFromScreen_(ns_rect);
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window.view.convertPoint_fromView_(window_rect.origin, cocoa::base::nil)
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} else {
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window.view.convertPoint_fromView_(window_point, cocoa::base::nil)
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};
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let view_rect = NSView::frame(*window.view);
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let scale_factor = window.hidpi_factor();
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let x = (scale_factor * view_point.x as f32) as i32;
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let y = (scale_factor * (view_rect.size.height - view_point.y) as f32) as i32;
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let window_event = WindowEvent::MouseMoved(x, y);
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Some(into_event(window_event))
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},
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appkit::NSScrollWheel => {
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use events::MouseScrollDelta::{LineDelta, PixelDelta};
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let scale_factor = window.hidpi_factor();
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let delta = if ns_event.hasPreciseScrollingDeltas() == cocoa::base::YES {
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PixelDelta(scale_factor * ns_event.scrollingDeltaX() as f32,
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scale_factor * ns_event.scrollingDeltaY() as f32)
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} else {
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LineDelta(scale_factor * ns_event.scrollingDeltaX() as f32,
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scale_factor * ns_event.scrollingDeltaY() as f32)
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};
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let phase = match ns_event.phase() {
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appkit::NSEventPhaseMayBegin | appkit::NSEventPhaseBegan => TouchPhase::Started,
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appkit::NSEventPhaseEnded => TouchPhase::Ended,
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_ => TouchPhase::Moved,
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};
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let window_event = WindowEvent::MouseWheel(delta, phase);
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Some(into_event(window_event))
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},
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appkit::NSEventTypePressure => {
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let pressure = ns_event.pressure();
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let stage = ns_event.stage();
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let window_event = WindowEvent::TouchpadPressure(pressure, stage);
|
||
|
|
Some(into_event(window_event))
|
||
|
|
},
|
||
|
|
_ => None,
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
fn to_virtual_key_code(code: u16) -> Option<events::VirtualKeyCode> {
|
||
|
|
Some(match code {
|
||
|
|
0x00 => events::VirtualKeyCode::A,
|
||
|
|
0x01 => events::VirtualKeyCode::S,
|
||
|
|
0x02 => events::VirtualKeyCode::D,
|
||
|
|
0x03 => events::VirtualKeyCode::F,
|
||
|
|
0x04 => events::VirtualKeyCode::H,
|
||
|
|
0x05 => events::VirtualKeyCode::G,
|
||
|
|
0x06 => events::VirtualKeyCode::Z,
|
||
|
|
0x07 => events::VirtualKeyCode::X,
|
||
|
|
0x08 => events::VirtualKeyCode::C,
|
||
|
|
0x09 => events::VirtualKeyCode::V,
|
||
|
|
//0x0a => World 1,
|
||
|
|
0x0b => events::VirtualKeyCode::B,
|
||
|
|
0x0c => events::VirtualKeyCode::Q,
|
||
|
|
0x0d => events::VirtualKeyCode::W,
|
||
|
|
0x0e => events::VirtualKeyCode::E,
|
||
|
|
0x0f => events::VirtualKeyCode::R,
|
||
|
|
0x10 => events::VirtualKeyCode::Y,
|
||
|
|
0x11 => events::VirtualKeyCode::T,
|
||
|
|
0x12 => events::VirtualKeyCode::Key1,
|
||
|
|
0x13 => events::VirtualKeyCode::Key2,
|
||
|
|
0x14 => events::VirtualKeyCode::Key3,
|
||
|
|
0x15 => events::VirtualKeyCode::Key4,
|
||
|
|
0x16 => events::VirtualKeyCode::Key6,
|
||
|
|
0x17 => events::VirtualKeyCode::Key5,
|
||
|
|
0x18 => events::VirtualKeyCode::Equals,
|
||
|
|
0x19 => events::VirtualKeyCode::Key9,
|
||
|
|
0x1a => events::VirtualKeyCode::Key7,
|
||
|
|
0x1b => events::VirtualKeyCode::Minus,
|
||
|
|
0x1c => events::VirtualKeyCode::Key8,
|
||
|
|
0x1d => events::VirtualKeyCode::Key0,
|
||
|
|
0x1e => events::VirtualKeyCode::RBracket,
|
||
|
|
0x1f => events::VirtualKeyCode::O,
|
||
|
|
0x20 => events::VirtualKeyCode::U,
|
||
|
|
0x21 => events::VirtualKeyCode::LBracket,
|
||
|
|
0x22 => events::VirtualKeyCode::I,
|
||
|
|
0x23 => events::VirtualKeyCode::P,
|
||
|
|
0x24 => events::VirtualKeyCode::Return,
|
||
|
|
0x25 => events::VirtualKeyCode::L,
|
||
|
|
0x26 => events::VirtualKeyCode::J,
|
||
|
|
0x27 => events::VirtualKeyCode::Apostrophe,
|
||
|
|
0x28 => events::VirtualKeyCode::K,
|
||
|
|
0x29 => events::VirtualKeyCode::Semicolon,
|
||
|
|
0x2a => events::VirtualKeyCode::Backslash,
|
||
|
|
0x2b => events::VirtualKeyCode::Comma,
|
||
|
|
0x2c => events::VirtualKeyCode::Slash,
|
||
|
|
0x2d => events::VirtualKeyCode::N,
|
||
|
|
0x2e => events::VirtualKeyCode::M,
|
||
|
|
0x2f => events::VirtualKeyCode::Period,
|
||
|
|
0x30 => events::VirtualKeyCode::Tab,
|
||
|
|
0x31 => events::VirtualKeyCode::Space,
|
||
|
|
0x32 => events::VirtualKeyCode::Grave,
|
||
|
|
0x33 => events::VirtualKeyCode::Back,
|
||
|
|
//0x34 => unkown,
|
||
|
|
0x35 => events::VirtualKeyCode::Escape,
|
||
|
|
0x36 => events::VirtualKeyCode::RWin,
|
||
|
|
0x37 => events::VirtualKeyCode::LWin,
|
||
|
|
0x38 => events::VirtualKeyCode::LShift,
|
||
|
|
//0x39 => Caps lock,
|
||
|
|
//0x3a => Left alt,
|
||
|
|
0x3b => events::VirtualKeyCode::LControl,
|
||
|
|
0x3c => events::VirtualKeyCode::RShift,
|
||
|
|
//0x3d => Right alt,
|
||
|
|
0x3e => events::VirtualKeyCode::RControl,
|
||
|
|
//0x3f => Fn key,
|
||
|
|
//0x40 => F17 Key,
|
||
|
|
0x41 => events::VirtualKeyCode::Decimal,
|
||
|
|
//0x42 -> unkown,
|
||
|
|
0x43 => events::VirtualKeyCode::Multiply,
|
||
|
|
//0x44 => unkown,
|
||
|
|
0x45 => events::VirtualKeyCode::Add,
|
||
|
|
//0x46 => unkown,
|
||
|
|
0x47 => events::VirtualKeyCode::Numlock,
|
||
|
|
//0x48 => KeypadClear,
|
||
|
|
0x49 => events::VirtualKeyCode::VolumeUp,
|
||
|
|
0x4a => events::VirtualKeyCode::VolumeDown,
|
||
|
|
0x4b => events::VirtualKeyCode::Divide,
|
||
|
|
0x4c => events::VirtualKeyCode::NumpadEnter,
|
||
|
|
//0x4d => unkown,
|
||
|
|
0x4e => events::VirtualKeyCode::Subtract,
|
||
|
|
//0x4f => F18 key,
|
||
|
|
//0x50 => F19 Key,
|
||
|
|
0x51 => events::VirtualKeyCode::NumpadEquals,
|
||
|
|
0x52 => events::VirtualKeyCode::Numpad0,
|
||
|
|
0x53 => events::VirtualKeyCode::Numpad1,
|
||
|
|
0x54 => events::VirtualKeyCode::Numpad2,
|
||
|
|
0x55 => events::VirtualKeyCode::Numpad3,
|
||
|
|
0x56 => events::VirtualKeyCode::Numpad4,
|
||
|
|
0x57 => events::VirtualKeyCode::Numpad5,
|
||
|
|
0x58 => events::VirtualKeyCode::Numpad6,
|
||
|
|
0x59 => events::VirtualKeyCode::Numpad7,
|
||
|
|
//0x5a => F20 Key,
|
||
|
|
0x5b => events::VirtualKeyCode::Numpad8,
|
||
|
|
0x5c => events::VirtualKeyCode::Numpad9,
|
||
|
|
//0x5d => unkown,
|
||
|
|
//0x5e => unkown,
|
||
|
|
//0x5f => unkown,
|
||
|
|
0x60 => events::VirtualKeyCode::F5,
|
||
|
|
0x61 => events::VirtualKeyCode::F6,
|
||
|
|
0x62 => events::VirtualKeyCode::F7,
|
||
|
|
0x63 => events::VirtualKeyCode::F3,
|
||
|
|
0x64 => events::VirtualKeyCode::F8,
|
||
|
|
0x65 => events::VirtualKeyCode::F9,
|
||
|
|
//0x66 => unkown,
|
||
|
|
0x67 => events::VirtualKeyCode::F11,
|
||
|
|
//0x68 => unkown,
|
||
|
|
0x69 => events::VirtualKeyCode::F13,
|
||
|
|
//0x6a => F16 Key,
|
||
|
|
0x6b => events::VirtualKeyCode::F14,
|
||
|
|
//0x6c => unkown,
|
||
|
|
0x6d => events::VirtualKeyCode::F10,
|
||
|
|
//0x6e => unkown,
|
||
|
|
0x6f => events::VirtualKeyCode::F12,
|
||
|
|
//0x70 => unkown,
|
||
|
|
0x71 => events::VirtualKeyCode::F15,
|
||
|
|
0x72 => events::VirtualKeyCode::Insert,
|
||
|
|
0x73 => events::VirtualKeyCode::Home,
|
||
|
|
0x74 => events::VirtualKeyCode::PageUp,
|
||
|
|
0x75 => events::VirtualKeyCode::Delete,
|
||
|
|
0x76 => events::VirtualKeyCode::F4,
|
||
|
|
0x77 => events::VirtualKeyCode::End,
|
||
|
|
0x78 => events::VirtualKeyCode::F2,
|
||
|
|
0x79 => events::VirtualKeyCode::PageDown,
|
||
|
|
0x7a => events::VirtualKeyCode::F1,
|
||
|
|
0x7b => events::VirtualKeyCode::Left,
|
||
|
|
0x7c => events::VirtualKeyCode::Right,
|
||
|
|
0x7d => events::VirtualKeyCode::Down,
|
||
|
|
0x7e => events::VirtualKeyCode::Up,
|
||
|
|
//0x7f => unkown,
|
||
|
|
|
||
|
|
_ => return None,
|
||
|
|
})
|
||
|
|
}
|