maverick_os 0.1.1

Maverick OS
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#[cfg(target_os = "ios")]
use objc2::MainThreadMarker;
#[cfg(target_os = "ios")]
use objc2_ui_kit::UIApplication;
#[cfg(target_os = "ios")]
use std::sync::Once;
#[cfg(target_os = "ios")]
use objc2::rc::Retained;

#[cfg(target_os = "ios")]
static mut INSETS: [f32; 4] = [0.0; 4];
#[cfg(target_os = "ios")]
static INIT: Once = Once::new();

pub struct SafeAreaInsets;

impl SafeAreaInsets {
    #[cfg(target_os = "ios")]
    pub fn get() -> (f32, f32, f32, f32) {
        unsafe {
            INIT.call_once(|| {
                let mtm = MainThreadMarker::new().expect("must be on the main thread");
                let window: Retained<UIApplication> = UIApplication::sharedApplication(mtm);
    
                if let Some(key_window) = window.keyWindow() {
                    let insets = key_window.safeAreaInsets();
    
                    INSETS[0] = insets.top as f32;
    
                    INSETS[1] = insets.bottom as f32;
    
                    INSETS[2] = insets.left as f32;
    
                    INSETS[3] = insets.right as f32;
                }
            });
    
            (INSETS[0], INSETS[1], INSETS[2], INSETS[3])
        } 
    }

    #[cfg(not(target_os = "ios"))]
    pub fn get() -> (f32, f32, f32, f32) {
        (0.0, 0.0, 0.0, 0.0)
    }
}