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// Take a look at the license at the top of the repository in the LICENSE file.

use crate::WaylandDisplay;
#[cfg(any(feature = "wayland_crate", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "wayland_crate")))]
use glib::translate::ToGlibPtr;
#[cfg(any(all(feature = "v4_4", feature = "egl"), feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(all(feature = "v4_4", feature = "egl"))))]
use khronos_egl as egl;

#[cfg(any(feature = "wayland_crate", feature = "dox"))]
#[cfg_attr(feature = "dox", doc(cfg(feature = "wayland_crate")))]
use wayland_client::{
    protocol::wl_compositor::WlCompositor,
    sys::client::{wl_display, wl_proxy},
    Proxy,
};

impl WaylandDisplay {
    /// Retrieves the EGL display connection object for the given GDK display.
    ///
    /// # Returns
    ///
    /// the EGL display
    #[cfg(any(all(feature = "v4_4", feature = "egl"), feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(all(feature = "v4_4", feature = "egl"))))]
    #[doc(alias = "gdk_wayland_display_get_egl_display")]
    #[doc(alias = "get_egl_display")]
    pub fn egl_display(&self) -> Option<egl::Display> {
        unsafe {
            let ptr = ffi::gdk_wayland_display_get_egl_display(self.to_glib_none().0);
            if ptr.is_null() {
                None
            } else {
                Some(egl::Display::from_ptr(ptr))
            }
        }
    }

    /// Returns the Wayland `wl_compositor` of a [`gdk::Display`][crate::gdk::Display].
    ///
    /// # Returns
    ///
    /// a Wayland `wl_compositor`
    #[doc(alias = "gdk_wayland_display_get_wl_compositor")]
    #[doc(alias = "get_wl_compositor")]
    #[cfg(any(feature = "wayland_crate", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "wayland_crate")))]
    pub fn wl_compositor(&self) -> WlCompositor {
        unsafe {
            let ptr = ffi::gdk_wayland_display_get_wl_compositor(self.to_glib_none().0);
            Proxy::from_c_ptr(ptr as *mut wl_proxy).into()
        }
    }

    /// Returns the Wayland `wl_display` of a [`gdk::Display`][crate::gdk::Display].
    ///
    /// # Returns
    ///
    /// a Wayland `wl_display`
    #[doc(alias = "gdk_wayland_display_get_wl_display")]
    #[doc(alias = "get_wl_display")]
    #[cfg(any(feature = "wayland_crate", feature = "dox"))]
    #[cfg_attr(feature = "dox", doc(cfg(feature = "wayland_crate")))]
    pub fn wl_display(&self) -> wayland_client::Display {
        unsafe {
            let ptr = ffi::gdk_wayland_display_get_wl_display(self.to_glib_none().0);
            wayland_client::Display::from_external_display(ptr as *mut wl_display)
        }
    }
}