gtk/subclass/
plug.rs

1// Take a look at the license at the top of the repository in the LICENSE file.
2
3use glib::object::IsA;
4use glib::subclass::prelude::*;
5
6use glib::object::Cast;
7use glib::translate::*;
8
9use super::window::WindowImpl;
10use crate::{Plug, ffi};
11
12pub trait PlugImpl: WindowImpl + ObjectSubclass<Type: IsA<Plug>> {
13    fn embedded(&self) {
14        self.parent_embedded()
15    }
16}
17
18pub trait PlugImplExt: PlugImpl {
19    fn parent_embedded(&self) {
20        unsafe {
21            let data = Self::type_data();
22            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkPlugClass;
23            if let Some(f) = (*parent_class).embedded {
24                f(self.obj().unsafe_cast_ref::<Plug>().to_glib_none().0)
25            }
26        }
27    }
28}
29
30impl<T: PlugImpl> PlugImplExt for T {}
31
32unsafe impl<T: PlugImpl> IsSubclassable<T> for Plug {
33    fn class_init(class: &mut ::glib::Class<Self>) {
34        Self::parent_class_init::<T>(class);
35
36        if !crate::rt::is_initialized() {
37            panic!("GTK has to be initialized first");
38        }
39
40        let klass = class.as_mut();
41        klass.embedded = Some(plug_embedded::<T>);
42    }
43}
44
45unsafe extern "C" fn plug_embedded<T: PlugImpl>(ptr: *mut ffi::GtkPlug) {
46    unsafe {
47        let instance = &*(ptr as *mut T::Instance);
48        let imp = instance.imp();
49
50        imp.embedded()
51    }
52}
gtk/subclass/plug.rs

gtk/subclass/
plug.rs
