gtk4/subclass/
flow_box_child.rs

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1// Take a look at the license at the top of the repository in the LICENSE file.
2
3// rustdoc-stripper-ignore-next
4//! Traits intended for subclassing [`FlowBoxChild`](crate::FlowBoxChild).
5
6use glib::translate::*;
7
8use crate::{ffi, prelude::*, subclass::prelude::*, FlowBoxChild};
9
10pub trait FlowBoxChildImpl: FlowBoxChildImplExt + WidgetImpl {
11    fn activate(&self) {
12        self.parent_activate()
13    }
14}
15
16mod sealed {
17    pub trait Sealed {}
18    impl<T: super::FlowBoxChildImplExt> Sealed for T {}
19}
20
21pub trait FlowBoxChildImplExt: sealed::Sealed + ObjectSubclass {
22    fn parent_activate(&self) {
23        unsafe {
24            let data = Self::type_data();
25            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkFlowBoxChildClass;
26            if let Some(f) = (*parent_class).activate {
27                f(self
28                    .obj()
29                    .unsafe_cast_ref::<FlowBoxChild>()
30                    .to_glib_none()
31                    .0)
32            }
33        }
34    }
35}
36
37impl<T: FlowBoxChildImpl> FlowBoxChildImplExt for T {}
38
39unsafe impl<T: FlowBoxChildImpl> IsSubclassable<T> for FlowBoxChild {
40    fn class_init(class: &mut glib::Class<Self>) {
41        Self::parent_class_init::<T>(class);
42
43        let klass = class.as_mut();
44        klass.activate = Some(child_activate::<T>);
45    }
46}
47
48unsafe extern "C" fn child_activate<T: FlowBoxChildImpl>(ptr: *mut ffi::GtkFlowBoxChild) {
49    let instance = &*(ptr as *mut T::Instance);
50    let imp = instance.imp();
51
52    imp.activate()
53}
gtk4/subclass/flow_box_child.rs

gtk4/subclass/
flow_box_child.rs
