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Add 'WindowEvent::Occluded(bool)'

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This commits and an event to track window occlusion state,
which could help optimize rendering downstream.
This commit is contained in:
trimental 2022-07-06 18:46:25 +00:00 • committed by GitHub
parent 4b10993970
commit e289f30e5d
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 39 additions and 3 deletions
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21
src/platform_impl/macos/window_delegate.rs
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@ -5,7 +5,7 @@ use std::{
};
use cocoa::{
appkit::{self, NSApplicationPresentationOptions, NSView, NSWindow},
appkit::{self, NSApplicationPresentationOptions, NSView, NSWindow, NSWindowOcclusionState},
base::{id, nil},
foundation::NSUInteger,
};
@ -220,6 +220,10 @@ static WINDOW_DELEGATE_CLASS: Lazy<WindowDelegateClass> = Lazy::new(|| unsafe {
sel!(windowDidFailToEnterFullScreen:),
window_did_fail_to_enter_fullscreen as extern "C" fn(&Object, Sel, id),
);
decl.add_method(
sel!(windowDidChangeOcclusionState:),
window_did_change_occlusion_state as extern "C" fn(&Object, Sel, id),
);
decl.add_ivar::<*mut c_void>("winitState");
WindowDelegateClass(decl.register())
@ -554,3 +558,18 @@ extern "C" fn window_did_fail_to_enter_fullscreen(this: &Object, _: Sel, _: id)
}
});
}
// Invoked when the occlusion state of the window changes
extern "C" fn window_did_change_occlusion_state(this: &Object, _: Sel, _: id) {
trace_scope!("windowDidChangeOcclusionState:");
unsafe {
with_state(this, |state| {
state.emit_event(WindowEvent::Occluded(
!state
.ns_window
.occlusionState()
.contains(NSWindowOcclusionState::NSWindowOcclusionStateVisible),
))
});
}
}