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// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files.git)
// DO NOT EDIT

use crate::DrawContext;
use glib::object::ObjectType as ObjectType_;
use glib::signal::connect_raw;
use glib::signal::SignalHandlerId;
use glib::translate::*;
use std::boxed::Box as Box_;
use std::fmt;
use std::mem::transmute;

glib::wrapper! {
    /// [`VulkanContext`][crate::VulkanContext] is an object representing the platform-specific
    /// Vulkan draw context.
    ///
    /// [`VulkanContext`][crate::VulkanContext]s are created for a surface using
    /// [``SurfaceExt::create_vulkan_context()``][crate::prelude::`SurfaceExt::create_vulkan_context()`], and the context will match
    /// the the characteristics of the surface.
    ///
    /// Support for [`VulkanContext`][crate::VulkanContext] is platform-specific and context creation
    /// can fail, returning [`None`] context.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`DrawContextExt`][trait@crate::prelude::DrawContextExt], [`DrawContextExtManual`][trait@crate::prelude::DrawContextExtManual]
    #[doc(alias = "GdkVulkanContext")]
    pub struct VulkanContext(Object<ffi::GdkVulkanContext>) @extends DrawContext;

    match fn {
        type_ => || ffi::gdk_vulkan_context_get_type(),
    }
}

impl VulkanContext {
    /// Emitted when the images managed by this context have changed.
    ///
    /// Usually this means that the swapchain had to be recreated,
    /// for example in response to a change of the surface size.
    #[doc(alias = "images-updated")]
    pub fn connect_images_updated<F: Fn(&Self) + 'static>(&self, f: F) -> SignalHandlerId {
        unsafe extern "C" fn images_updated_trampoline<F: Fn(&VulkanContext) + 'static>(
            this: *mut ffi::GdkVulkanContext,
            f: glib::ffi::gpointer,
        ) {
            let f: &F = &*(f as *const F);
            f(&from_glib_borrow(this))
        }
        unsafe {
            let f: Box_<F> = Box_::new(f);
            connect_raw(
                self.as_ptr() as *mut _,
                b"images-updated\0".as_ptr() as *const _,
                Some(transmute::<_, unsafe extern "C" fn()>(
                    images_updated_trampoline::<F> as *const (),
                )),
                Box_::into_raw(f),
            )
        }
    }
}

impl fmt::Display for VulkanContext {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("VulkanContext")
    }
}