use crate::{px, size, Bounds, DisplayId, Pixels, PlatformDisplay};use anyhow::Result;use cocoa::{    appkit::NSScreen,    base::{id, nil},    foundation::{NSDictionary, NSString},};use core_foundation::uuid::{CFUUIDGetUUIDBytes, CFUUIDRef};use core_graphics::display::{CGDirectDisplayID, CGDisplayBounds, CGGetActiveDisplayList};use objc::{msg_send, sel, sel_impl};use uuid::Uuid; #[derive(Debug)]pub(crate) struct MacDisplay(pub(crate) CGDirectDisplayID); unsafe impl Send for MacDisplay {} impl MacDisplay {    /// Get the screen with the given [`DisplayId`].    pub fn find_by_id(id: DisplayId) -> Option<Self> {        Self::all().find(|screen| screen.id() == id)    }     /// Get the primary screen - the one with the menu bar, and whose bottom left    /// corner is at the origin of the AppKit coordinate system.    pub fn primary() -> Self {        // Instead of iterating through all active systems displays via `all()` we use the first        // NSScreen and gets its CGDirectDisplayID, because we can't be sure that `CGGetActiveDisplayList`        // will always return a list of active displays (machine might be sleeping).        //        // The following is what Chromium does too:        //        // https://chromium.googlesource.com/chromium/src/+/66.0.3359.158/ui/display/mac/screen_mac.mm#56        unsafe {            let screens = NSScreen::screens(nil);            let screen = cocoa::foundation::NSArray::objectAtIndex(screens, 0);            let device_description = NSScreen::deviceDescription(screen);            let screen_number_key: id = NSString::alloc(nil).init_str("NSScreenNumber");            let screen_number = device_description.objectForKey_(screen_number_key);            let screen_number: CGDirectDisplayID = msg_send![screen_number, unsignedIntegerValue];            Self(screen_number)        }    }     /// Obtains an iterator over all currently active system displays.    pub fn all() -> impl Iterator<Item = Self> {        unsafe {            // We're assuming there aren't more than 32 displays connected to the system.            let mut displays = Vec::with_capacity(32);            let mut display_count = 0;            let result = CGGetActiveDisplayList(                displays.capacity() as u32,                displays.as_mut_ptr(),                &mut display_count,            );             if result == 0 {                displays.set_len(display_count as usize);                displays.into_iter().map(MacDisplay)            } else {                panic!("Failed to get active display list. Result: {result}");            }        }    }} #[link(name = "ApplicationServices", kind = "framework")]extern "C" {    fn CGDisplayCreateUUIDFromDisplayID(display: CGDirectDisplayID) -> CFUUIDRef;} impl PlatformDisplay for MacDisplay {    fn id(&self) -> DisplayId {        DisplayId(self.0)    }     fn uuid(&self) -> Result<Uuid> {        let cfuuid = unsafe { CGDisplayCreateUUIDFromDisplayID(self.0 as CGDirectDisplayID) };        anyhow::ensure!(            !cfuuid.is_null(),            "AppKit returned a null from CGDisplayCreateUUIDFromDisplayID"        );         let bytes = unsafe { CFUUIDGetUUIDBytes(cfuuid) };        Ok(Uuid::from_bytes([            bytes.byte0,            bytes.byte1,            bytes.byte2,            bytes.byte3,            bytes.byte4,            bytes.byte5,            bytes.byte6,            bytes.byte7,            bytes.byte8,            bytes.byte9,            bytes.byte10,            bytes.byte11,            bytes.byte12,            bytes.byte13,            bytes.byte14,            bytes.byte15,        ]))    }     fn bounds(&self) -> Bounds<Pixels> {        unsafe {            // CGDisplayBounds is in "global display" coordinates, where 0 is            // the top left of the primary display.            let bounds = CGDisplayBounds(self.0);             Bounds {                origin: Default::default(),                size: size(px(bounds.size.width as f32), px(bounds.size.height as f32)),            }        }    }}