gtk4/subclass/
button.rs

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 [`Button`].
5
6use glib::translate::*;
7
8use crate::{ffi, prelude::*, subclass::prelude::*, Actionable, Button};
9
10pub trait ButtonImpl: WidgetImpl + ObjectSubclass<Type: IsA<Button> + IsA<Actionable>> {
11    fn activate(&self) {
12        self.parent_activate()
13    }
14
15    fn clicked(&self) {
16        self.parent_clicked()
17    }
18}
19
20pub trait ButtonImplExt: ButtonImpl {
21    fn parent_activate(&self) {
22        unsafe {
23            let data = Self::type_data();
24            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkButtonClass;
25            if let Some(f) = (*parent_class).activate {
26                f(self.obj().unsafe_cast_ref::<Button>().to_glib_none().0)
27            }
28        }
29    }
30
31    fn parent_clicked(&self) {
32        unsafe {
33            let data = Self::type_data();
34            let parent_class = data.as_ref().parent_class() as *mut ffi::GtkButtonClass;
35            if let Some(f) = (*parent_class).clicked {
36                f(self.obj().unsafe_cast_ref::<Button>().to_glib_none().0)
37            }
38        }
39    }
40}
41impl<T: ButtonImpl> ButtonImplExt for T {}
42
43unsafe impl<T: ButtonImpl> IsSubclassable<T> for Button {
44    fn class_init(class: &mut glib::Class<Self>) {
45        Self::parent_class_init::<T>(class);
46
47        let klass = class.as_mut();
48        klass.activate = Some(button_activate::<T>);
49        klass.clicked = Some(button_clicked::<T>);
50    }
51}
52
53unsafe extern "C" fn button_activate<T: ButtonImpl>(ptr: *mut ffi::GtkButton) {
54    let instance = &*(ptr as *mut T::Instance);
55    let imp = instance.imp();
56
57    imp.activate()
58}
59
60unsafe extern "C" fn button_clicked<T: ButtonImpl>(ptr: *mut ffi::GtkButton) {
61    let instance = &*(ptr as *mut T::Instance);
62    let imp = instance.imp();
63
64    imp.clicked()
65}
gtk4/subclass/button.rs

gtk4/subclass/
button.rs
